Merge inbound to mozilla-central. a=merge
authorBrindusan Cristian <cbrindusan@mozilla.com>
Wed, 25 Apr 2018 00:50:59 +0300
changeset 471490 6eeb97ca94f40189d5aa552da9e0b0b11bfa0441
parent 471382 cfe09d016e770c3dbb0c65aa7536db0fa5d79bbf (current diff)
parent 471489 31dd07dd000efefc62ae97317ac336aec085ef79 (diff)
child 471548 290da68a04a4fb67a28ca690a9b185a7fed8a3a2
child 471570 d3c93907c3edfd9aedcf0187cae127fcc1498803
push id1728
push userjlund@mozilla.com
push dateMon, 18 Jun 2018 21:12:27 +0000
treeherdermozilla-release@c296fde26f5f [default view] [failures only]
perfherder[talos] [build metrics] [platform microbench] (compared to previous push)
reviewersmerge
milestone61.0a1
first release with
nightly linux32
6eeb97ca94f4 / 61.0a1 / 20180424220100 / files
nightly linux64
6eeb97ca94f4 / 61.0a1 / 20180424220100 / files
nightly mac
6eeb97ca94f4 / 61.0a1 / 20180424220100 / files
nightly win32
6eeb97ca94f4 / 61.0a1 / 20180424220100 / files
nightly win64
6eeb97ca94f4 / 61.0a1 / 20180424220100 / files
last release without
nightly linux32
nightly linux64
nightly mac
nightly win32
nightly win64
releases
nightly linux32
nightly linux64
nightly mac
nightly win32
nightly win64
Merge inbound to mozilla-central. a=merge
dom/media/test/mochitest.ini
dom/media/test/test_streams_element_capture_createObjectURL.html
mobile/android/app/mobile.js
mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/ContentDelegateTest.kt
mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/NavigationDelegateTest.kt
mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/ProgressDelegateTest.kt
mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/util/Callbacks.kt
testing/marionette/components/marionette.js
testing/mozbase/mozprofile/mozprofile/profile.py
testing/web-platform/meta/MANIFEST.json
testing/web-platform/meta/css/css-transitions/transition-001.html.ini
testing/web-platform/meta/css/css-transitions/transition-timing-function-001.html.ini
testing/web-platform/meta/eventsource/dedicated-worker/eventsource-close2.htm.ini
testing/web-platform/tests/tools/certs/cakey.pem
toolkit/components/extensions/test/mochitest/file_same_site_cookies_webextension.sjs
toolkit/components/extensions/test/mochitest/test_same_site_cookies_webextension.html
toolkit/locales/en-US/chrome/mozapps/extensions/update.properties
toolkit/locales/jar.mn
toolkit/mozapps/extensions/content/update.css
toolkit/mozapps/extensions/content/update.html
toolkit/mozapps/extensions/content/update.js
toolkit/mozapps/extensions/internal/AddonTestUtils.jsm
toolkit/mozapps/extensions/internal/XPIDatabase.jsm
toolkit/mozapps/extensions/internal/XPIProvider.jsm
toolkit/mozapps/extensions/jar.mn
--- a/accessible/generic/Accessible.cpp
+++ b/accessible/generic/Accessible.cpp
@@ -65,16 +65,17 @@
 #include "nsIObserverService.h"
 #include "nsIServiceManager.h"
 #include "nsWhitespaceTokenizer.h"
 #include "nsAttrName.h"
 
 #include "mozilla/Assertions.h"
 #include "mozilla/BasicEvents.h"
 #include "mozilla/ErrorResult.h"
+#include "mozilla/EventStateManager.h"
 #include "mozilla/EventStates.h"
 #include "mozilla/FloatingPoint.h"
 #include "mozilla/MouseEvents.h"
 #include "mozilla/Unused.h"
 #include "mozilla/Preferences.h"
 #include "mozilla/dom/CanvasRenderingContext2D.h"
 #include "mozilla/dom/Element.h"
 #include "mozilla/dom/HTMLCanvasElement.h"
@@ -753,20 +754,22 @@ Accessible::TakeFocus()
       nsIFrame* widgetFrame = widgetElm->GetPrimaryFrame();
       if (widgetFrame && widgetFrame->IsFocusable()) {
         focusContent = widgetElm;
         widget->SetCurrentItem(this);
       }
     }
   }
 
-  nsCOMPtr<nsIDOMElement> element(do_QueryInterface(focusContent));
   nsFocusManager* fm = nsFocusManager::GetFocusManager();
-  if (fm)
+  if (fm) {
+    AutoHandlingUserInputStatePusher inputStatePusher(true, nullptr, focusContent->OwnerDoc());
+    nsCOMPtr<nsIDOMElement> element(do_QueryInterface(focusContent));
     fm->SetFocus(element, 0);
+  }
 }
 
 void
 Accessible::XULElmName(DocAccessible* aDocument,
                        nsIContent* aElm, nsString& aName)
 {
   /**
    * 3 main cases for XUL Controls to be labeled
--- a/accessible/generic/DocAccessible.cpp
+++ b/accessible/generic/DocAccessible.cpp
@@ -35,16 +35,17 @@
 #include "nsViewManager.h"
 #include "nsIScrollableFrame.h"
 #include "nsUnicharUtils.h"
 #include "nsIURI.h"
 #include "nsIWebNavigation.h"
 #include "nsFocusManager.h"
 #include "mozilla/ArrayUtils.h"
 #include "mozilla/Assertions.h"
+#include "mozilla/EventStateManager.h"
 #include "mozilla/EventStates.h"
 #include "mozilla/HTMLEditor.h"
 #include "mozilla/TextEditor.h"
 #include "mozilla/dom/TabChild.h"
 #include "mozilla/dom/DocumentType.h"
 #include "mozilla/dom/Element.h"
 #include "mozilla/dom/MutationEventBinding.h"
 
@@ -320,16 +321,17 @@ DocAccessible::FocusedChild()
 }
 
 void
 DocAccessible::TakeFocus()
 {
   // Focus the document.
   nsFocusManager* fm = nsFocusManager::GetFocusManager();
   nsCOMPtr<nsIDOMElement> newFocus;
+  AutoHandlingUserInputStatePusher inputStatePusher(true, nullptr, mDocumentNode);
   fm->MoveFocus(mDocumentNode->GetWindow(), nullptr,
                 nsFocusManager::MOVEFOCUS_ROOT, 0, getter_AddRefs(newFocus));
 }
 
 // HyperTextAccessible method
 already_AddRefed<TextEditor>
 DocAccessible::GetEditor() const
 {
--- a/accessible/tests/mochitest/jsat/test_content_text.html
+++ b/accessible/tests/mochitest/jsat/test_content_text.html
@@ -158,17 +158,20 @@
            new ExpectedAnnouncement("editing"),
            new ExpectedEditState({
             editing: true,
             multiline: false,
             atStart: true,
             atEnd: true
            },
            { focused: "input[type=text]" }),
-           new ExpectedTextSelectionChanged(0, 0)],
+           new ExpectedTextSelectionChanged(0, 0,
+             // Bug 1455749: Fix granularity control in text entries.
+             { android_todo: true }
+           )],
           [ContentMessages.simpleMovePrevious,
            new ExpectedCursorChange(
             [ "So we don't get dessert?", {string: "label"} ]),
            new ExpectedAnnouncement("navigating"),
            new ExpectedEditState({
             editing: false,
             multiline: false,
             atStart: true,
--- a/browser/app/profile/firefox.js
+++ b/browser/app/profile/firefox.js
@@ -1268,21 +1268,17 @@ pref("prompts.tab_modal.enabled", true);
 pref("browser.newtab.preload", true);
 
 // Indicates if about:newtab shows content (enabled) or just blank
 pref("browser.newtabpage.enabled", true);
 
 // Activity Stream prefs that control to which page to redirect
 pref("browser.newtabpage.activity-stream.prerender", true);
 #ifndef RELEASE_OR_BETA
-#ifdef MOZILLA_OFFICIAL
 pref("browser.newtabpage.activity-stream.debug", false);
-#else
-pref("browser.newtabpage.activity-stream.debug", true);
-#endif
 #endif
 
 pref("browser.library.activity-stream.enabled", true);
 
 // Enable the DOM fullscreen API.
 pref("full-screen-api.enabled", true);
 
 // Startup Crash Tracking
--- a/browser/components/extensions/test/browser/browser-common.ini
+++ b/browser/components/extensions/test/browser/browser-common.ini
@@ -192,17 +192,17 @@ skip-if = os == 'mac' # Save as PDF not 
 [browser_ext_tabs_cookieStoreId.js]
 [browser_ext_tabs_update.js]
 [browser_ext_tabs_zoom.js]
 [browser_ext_tabs_update_url.js]
 [browser_ext_themes_icons.js]
 [browser_ext_themes_validation.js]
 [browser_ext_url_overrides_newtab.js]
 [browser_ext_user_events.js]
-skip-if = debug
+skip-if = debug || os == "linux" #Bug 1381305
 [browser_ext_webRequest.js]
 [browser_ext_webNavigation_frameId0.js]
 [browser_ext_webNavigation_getFrames.js]
 [browser_ext_webNavigation_onCreatedNavigationTarget.js]
 [browser_ext_webNavigation_onCreatedNavigationTarget_contextmenu.js]
 [browser_ext_webNavigation_onCreatedNavigationTarget_named_window.js]
 [browser_ext_webNavigation_onCreatedNavigationTarget_subframe_window_open.js]
 [browser_ext_webNavigation_onCreatedNavigationTarget_window_open.js]
--- a/browser/components/newtab/tests/xpcshell/test_AboutNewTabService.js
+++ b/browser/components/newtab/tests/xpcshell/test_AboutNewTabService.js
@@ -8,17 +8,16 @@ ChromeUtils.import("resource://gre/modul
 ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
 ChromeUtils.import("resource://gre/modules/Preferences.jsm");
 ChromeUtils.import("resource://gre/modules/AppConstants.jsm");
 XPCOMUtils.defineLazyServiceGetter(this, "aboutNewTabService",
                                    "@mozilla.org/browser/aboutnewtab-service;1",
                                    "nsIAboutNewTabService");
 
 const IS_RELEASE_OR_BETA = AppConstants.RELEASE_OR_BETA;
-const MOZILLA_OFFICIAL = AppConstants.MOZILLA_OFFICIAL;
 
 const ACTIVITY_STREAM_PRERENDER_URL = "resource://activity-stream/prerendered/en-US/activity-stream-prerendered.html";
 const ACTIVITY_STREAM_PRERENDER_DEBUG_URL = "resource://activity-stream/prerendered/static/activity-stream-prerendered-debug.html";
 const ACTIVITY_STREAM_URL = "resource://activity-stream/prerendered/en-US/activity-stream.html";
 const ACTIVITY_STREAM_DEBUG_URL = "resource://activity-stream/prerendered/static/activity-stream-debug.html";
 
 const DOWNLOADS_URL = "chrome://browser/content/downloads/contentAreaDownloadsView.xul";
 const ACTIVITY_STREAM_PRERENDER_PREF = "browser.newtabpage.activity-stream.prerender";
@@ -130,26 +129,16 @@ add_task(async function test_default_url
   cleanup();
 });
 
 add_task(function test_locale() {
   Assert.equal(aboutNewTabService.activityStreamLocale, "en-US",
     "The locale for testing should be en-US");
 });
 
-add_task(async function test_debug_mode() {
-  if (!IS_RELEASE_OR_BETA && !MOZILLA_OFFICIAL) { // Check if local build
-    Assert.equal(aboutNewTabService.activityStreamDebug, true,
-      "Debug mode is set for builds that are not official");
-  } else {
-    Assert.equal(aboutNewTabService.activityStreamDebug, false,
-      "Debug mode is not set for any other builds");
-  }
-});
-
 /**
  * Tests reponse to updates to prefs
  */
 add_task(async function test_updates() {
   /*
    * Simulates a "cold-boot" situation, with some pref already set before testing a series
    * of changes.
    */
@@ -201,19 +190,16 @@ function setBoolPrefAndWaitForChange(pre
     }, "newtab-url-changed");
 
     Services.prefs.setBoolPref(pref, value);
   });
 }
 
 
 function setupASPrerendered() {
-  // Don't run in debug mode regardless of build type
-  Services.prefs.setBoolPref(ACTIVITY_STREAM_DEBUG_PREF, false);
-
   if (Services.prefs.getBoolPref(ACTIVITY_STREAM_PRERENDER_PREF)) {
     return Promise.resolve();
   }
 
   let notificationPromise = nextChangeNotificationPromise("about:newtab");
   Services.prefs.setBoolPref(ACTIVITY_STREAM_PRERENDER_PREF, true);
   return notificationPromise;
 }
--- a/browser/components/resistfingerprinting/test/mochitest/test_reduce_time_precision.html
+++ b/browser/components/resistfingerprinting/test/mochitest/test_reduce_time_precision.html
@@ -170,16 +170,26 @@ https://trac.torproject.org/projects/tor
     if (resistFingerprinting) {
       expectedPrecision = expectedPrecision < 100 ? 100 : expectedPrecision;
     }
 
     // Loop through each timeStampCode, evaluate it,
     // and check if it is rounded
     for (let timeStampCode of timeStampCodesDOM) {
       let timeStamp = eval(timeStampCode);
+
+      // Audio Contexts increment in intervals of (minimum) 5.4ms, so we don't
+      // clamp/jitter if the timer precision is les than that.
+      // (Technically on MBPs they increment in intervals of 2.6 but this is
+      // non-standard and will eventually be changed. We don't cover this situation
+      // because we don't really support arbitrary Timer Precision, especially in
+      // the 2.6 - 5.4ms interval.)
+      if (timeStampCode.includes("audioContext") && expectedPrecision < 5.4)
+        continue;
+
       ok(isRounded(timeStamp, expectedPrecision),
         "pref: " + prefname + " - '" +
          "'" + timeStampCode +
          "' should be rounded to nearest " +
          expectedPrecision + " ms; saw " +
          timeStamp);
     }
   }
--- a/browser/modules/webrtcUI.jsm
+++ b/browser/modules/webrtcUI.jsm
@@ -665,17 +665,17 @@ function prompt(aBrowser, aRequest) {
           let constraints = { video: { mediaSource: type, deviceId: {exact: deviceId } } };
           chromeWin.navigator.mediaDevices.getUserMedia(constraints).then(stream => {
             if (video.deviceId != deviceId) {
               // The user has selected a different device or closed the panel
               // before getUserMedia finished.
               stream.getTracks().forEach(t => t.stop());
               return;
             }
-            video.src = chromeWin.URL.createObjectURL(stream);
+            video.srcObject = stream;
             video.stream = stream;
             doc.getElementById("webRTC-preview").hidden = false;
             video.onloadedmetadata = function(e) {
               video.play();
             };
           });
         };
         menupopup.addEventListener("command", menupopup._commandEventListener);
--- a/devtools/client/debugger/new/test/mochitest/browser.ini
+++ b/devtools/client/debugger/new/test/mochitest/browser.ini
@@ -145,17 +145,17 @@ support-files =
 [browser_dbg-asm.js]
 [browser_dbg-async-stepping.js]
 [browser_dbg-babel-breakpoint-console.js]
 skip-if = (os == "win" && ccov) # Bug 1453549
 [browser_dbg-babel-scopes.js]
 skip-if = ccov # Bug 1441545
 [browser_dbg-babel-stepping.js]
 [browser_dbg-babel-preview.js]
-skip-if = (os == "win" && ccov) # Bug 1448523
+skip-if = (os == "win" && ccov) || (os == "win" && !debug) # Bug 1448523, Bug 1448450
 [browser_dbg-breaking.js]
 [browser_dbg-breaking-from-console.js]
 [browser_dbg-breakpoints.js]
 [browser_dbg-breakpoints-reloading.js]
 [browser_dbg-breakpoints-cond.js]
 [browser_dbg-browser-content-toolbox.js]
 skip-if = !e10s # This test is only valid in e10s
 [browser_dbg-call-stack.js]
--- a/devtools/client/sourceeditor/README
+++ b/devtools/client/sourceeditor/README
@@ -1,16 +1,16 @@
 This is the CodeMirror editor packaged for the Mozilla Project. CodeMirror
 is a JavaScript component that provides a code editor in the browser. When
 a mode is available for the language you are coding in, it will color your
 code, and optionally help with indentation.
 
 # Upgrade
 
-Currently used version is 5.36.0. To upgrade: download a new version of
+Currently used version is 5.37.0. To upgrade: download a new version of
 CodeMirror from the project's page [1] and replace all JavaScript and
 CSS files inside the codemirror directory [2].
 
 Then to recreate codemirror.bundle.js:
  > cd devtools/client/sourceeditor
  > npm install
  > webpack
 
--- a/devtools/client/sourceeditor/codemirror/addon/fold/xml-fold.js
+++ b/devtools/client/sourceeditor/codemirror/addon/fold/xml-fold.js
@@ -132,22 +132,24 @@
         };
       }
     }
   }
 
   CodeMirror.registerHelper("fold", "xml", function(cm, start) {
     var iter = new Iter(cm, start.line, 0);
     for (;;) {
-      var openTag = toNextTag(iter), end;
-      if (!openTag || !(end = toTagEnd(iter)) || iter.line != start.line) return;
+      var openTag = toNextTag(iter)
+      if (!openTag || iter.line != start.line) return
+      var end = toTagEnd(iter)
+      if (!end) return
       if (!openTag[1] && end != "selfClose") {
         var startPos = Pos(iter.line, iter.ch);
         var endPos = findMatchingClose(iter, openTag[2]);
-        return endPos && {from: startPos, to: endPos.from};
+        return endPos && cmp(endPos.from, startPos) > 0 ? {from: startPos, to: endPos.from} : null
       }
     }
   });
   CodeMirror.findMatchingTag = function(cm, pos, range) {
     var iter = new Iter(cm, pos.line, pos.ch, range);
     if (iter.text.indexOf(">") == -1 && iter.text.indexOf("<") == -1) return;
     var end = toTagEnd(iter), to = end && Pos(iter.line, iter.ch);
     var start = end && toTagStart(iter);
--- a/devtools/client/sourceeditor/codemirror/addon/search/match-highlighter.js
+++ b/devtools/client/sourceeditor/codemirror/addon/search/match-highlighter.js
@@ -85,17 +85,17 @@
     clearTimeout(state.timeout);
     state.timeout = setTimeout(function() {highlightMatches(cm);}, state.options.delay);
   }
 
   function addOverlay(cm, query, hasBoundary, style) {
     var state = cm.state.matchHighlighter;
     cm.addOverlay(state.overlay = makeOverlay(query, hasBoundary, style));
     if (state.options.annotateScrollbar && cm.showMatchesOnScrollbar) {
-      var searchFor = hasBoundary ? new RegExp("\\b" + query.replace(/[\\\[+*?(){|^$]/g, "\\$&") + "\\b") : query;
+      var searchFor = hasBoundary ? new RegExp("\\b" + query.replace(/[\\\[.+*?(){|^$]/g, "\\$&") + "\\b") : query;
       state.matchesonscroll = cm.showMatchesOnScrollbar(searchFor, false,
         {className: "CodeMirror-selection-highlight-scrollbar"});
     }
   }
 
   function removeOverlay(cm) {
     var state = cm.state.matchHighlighter;
     if (state.overlay) {
--- a/devtools/client/sourceeditor/codemirror/codemirror.bundle.js
+++ b/devtools/client/sourceeditor/codemirror/codemirror.bundle.js
@@ -1,22282 +1,1 @@
-var CodeMirror =
-/******/ (function(modules) { // webpackBootstrap
-/******/ 	// The module cache
-/******/ 	var installedModules = {};
-
-/******/ 	// The require function
-/******/ 	function __webpack_require__(moduleId) {
-
-/******/ 		// Check if module is in cache
-/******/ 		if(installedModules[moduleId])
-/******/ 			return installedModules[moduleId].exports;
-
-/******/ 		// Create a new module (and put it into the cache)
-/******/ 		var module = installedModules[moduleId] = {
-/******/ 			exports: {},
-/******/ 			id: moduleId,
-/******/ 			loaded: false
-/******/ 		};
-
-/******/ 		// Execute the module function
-/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
-
-/******/ 		// Flag the module as loaded
-/******/ 		module.loaded = true;
-
-/******/ 		// Return the exports of the module
-/******/ 		return module.exports;
-/******/ 	}
-
-
-/******/ 	// expose the modules object (__webpack_modules__)
-/******/ 	__webpack_require__.m = modules;
-
-/******/ 	// expose the module cache
-/******/ 	__webpack_require__.c = installedModules;
-
-/******/ 	// __webpack_public_path__
-/******/ 	__webpack_require__.p = "";
-
-/******/ 	// Load entry module and return exports
-/******/ 	return __webpack_require__(0);
-/******/ })
-/************************************************************************/
-/******/ ([
-/* 0 */
-/***/ (function(module, exports, __webpack_require__) {
-
-	__webpack_require__(1);
-	__webpack_require__(3);
-	__webpack_require__(4);
-	__webpack_require__(5);
-	__webpack_require__(6);
-	__webpack_require__(7);
-	__webpack_require__(8);
-	__webpack_require__(9);
-	__webpack_require__(10);
-	__webpack_require__(11);
-	__webpack_require__(12);
-	__webpack_require__(13);
-	__webpack_require__(14);
-	__webpack_require__(15);
-	__webpack_require__(16);
-	__webpack_require__(17);
-	__webpack_require__(18);
-	__webpack_require__(19);
-	__webpack_require__(20);
-	__webpack_require__(21);
-	__webpack_require__(22);
-	__webpack_require__(23);
-	__webpack_require__(24);
-	__webpack_require__(25);
-	__webpack_require__(26);
-	module.exports = __webpack_require__(2);
-
-
-/***/ }),
-/* 1 */
-/***/ (function(module, exports, __webpack_require__) {
-
-	// CodeMirror, copyright (c) by Marijn Haverbeke and others
-	// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-	// Open simple dialogs on top of an editor. Relies on dialog.css.
-
-	(function(mod) {
-	  if (true) // CommonJS
-	    mod(__webpack_require__(2));
-	  else if (typeof define == "function" && define.amd) // AMD
-	    define(["../../lib/codemirror"], mod);
-	  else // Plain browser env
-	    mod(CodeMirror);
-	})(function(CodeMirror) {
-	  function dialogDiv(cm, template, bottom) {
-	    var wrap = cm.getWrapperElement();
-	    var dialog;
-	    dialog = wrap.appendChild(document.createElement("div"));
-	    if (bottom)
-	      dialog.className = "CodeMirror-dialog CodeMirror-dialog-bottom";
-	    else
-	      dialog.className = "CodeMirror-dialog CodeMirror-dialog-top";
-
-	    if (typeof template == "string") {
-	      dialog.innerHTML = template;
-	    } else { // Assuming it's a detached DOM element.
-	      dialog.appendChild(template);
-	    }
-	    return dialog;
-	  }
-
-	  function closeNotification(cm, newVal) {
-	    if (cm.state.currentNotificationClose)
-	      cm.state.currentNotificationClose();
-	    cm.state.currentNotificationClose = newVal;
-	  }
-
-	  CodeMirror.defineExtension("openDialog", function(template, callback, options) {
-	    if (!options) options = {};
-
-	    closeNotification(this, null);
-
-	    var dialog = dialogDiv(this, template, options.bottom);
-	    var closed = false, me = this;
-	    function close(newVal) {
-	      if (typeof newVal == 'string') {
-	        inp.value = newVal;
-	      } else {
-	        if (closed) return;
-	        closed = true;
-	        dialog.parentNode.removeChild(dialog);
-	        me.focus();
-
-	        if (options.onClose) options.onClose(dialog);
-	      }
-	    }
-
-	    var inp = dialog.getElementsByTagName("input")[0], button;
-	    if (inp) {
-	      inp.focus();
-
-	      if (options.value) {
-	        inp.value = options.value;
-	        if (options.selectValueOnOpen !== false) {
-	          inp.select();
-	        }
-	      }
-
-	      if (options.onInput)
-	        CodeMirror.on(inp, "input", function(e) { options.onInput(e, inp.value, close);});
-	      if (options.onKeyUp)
-	        CodeMirror.on(inp, "keyup", function(e) {options.onKeyUp(e, inp.value, close);});
-
-	      CodeMirror.on(inp, "keydown", function(e) {
-	        if (options && options.onKeyDown && options.onKeyDown(e, inp.value, close)) { return; }
-	        if (e.keyCode == 27 || (options.closeOnEnter !== false && e.keyCode == 13)) {
-	          inp.blur();
-	          CodeMirror.e_stop(e);
-	          close();
-	        }
-	        if (e.keyCode == 13) callback(inp.value, e);
-	      });
-
-	      if (options.closeOnBlur !== false) CodeMirror.on(inp, "blur", close);
-	    } else if (button = dialog.getElementsByTagName("button")[0]) {
-	      CodeMirror.on(button, "click", function() {
-	        close();
-	        me.focus();
-	      });
-
-	      if (options.closeOnBlur !== false) CodeMirror.on(button, "blur", close);
-
-	      button.focus();
-	    }
-	    return close;
-	  });
-
-	  CodeMirror.defineExtension("openConfirm", function(template, callbacks, options) {
-	    closeNotification(this, null);
-	    var dialog = dialogDiv(this, template, options && options.bottom);
-	    var buttons = dialog.getElementsByTagName("button");
-	    var closed = false, me = this, blurring = 1;
-	    function close() {
-	      if (closed) return;
-	      closed = true;
-	      dialog.parentNode.removeChild(dialog);
-	      me.focus();
-	    }
-	    buttons[0].focus();
-	    for (var i = 0; i < buttons.length; ++i) {
-	      var b = buttons[i];
-	      (function(callback) {
-	        CodeMirror.on(b, "click", function(e) {
-	          CodeMirror.e_preventDefault(e);
-	          close();
-	          if (callback) callback(me);
-	        });
-	      })(callbacks[i]);
-	      CodeMirror.on(b, "blur", function() {
-	        --blurring;
-	        setTimeout(function() { if (blurring <= 0) close(); }, 200);
-	      });
-	      CodeMirror.on(b, "focus", function() { ++blurring; });
-	    }
-	  });
-
-	  /*
-	   * openNotification
-	   * Opens a notification, that can be closed with an optional timer
-	   * (default 5000ms timer) and always closes on click.
-	   *
-	   * If a notification is opened while another is opened, it will close the
-	   * currently opened one and open the new one immediately.
-	   */
-	  CodeMirror.defineExtension("openNotification", function(template, options) {
-	    closeNotification(this, close);
-	    var dialog = dialogDiv(this, template, options && options.bottom);
-	    var closed = false, doneTimer;
-	    var duration = options && typeof options.duration !== "undefined" ? options.duration : 5000;
-
-	    function close() {
-	      if (closed) return;
-	      closed = true;
-	      clearTimeout(doneTimer);
-	      dialog.parentNode.removeChild(dialog);
-	    }
-
-	    CodeMirror.on(dialog, 'click', function(e) {
-	      CodeMirror.e_preventDefault(e);
-	      close();
-	    });
-
-	    if (duration)
-	      doneTimer = setTimeout(close, duration);
-
-	    return close;
-	  });
-	});
-
-
-/***/ }),
-/* 2 */
-/***/ (function(module, exports, __webpack_require__) {
-
-	// CodeMirror, copyright (c) by Marijn Haverbeke and others
-	// Distributed under an MIT license: http://codemirror.net/LICENSE
-
-	// This is CodeMirror (http://codemirror.net), a code editor
-	// implemented in JavaScript on top of the browser's DOM.
-	//
-	// You can find some technical background for some of the code below
-	// at http://marijnhaverbeke.nl/blog/#cm-internals .
-
-	(function (global, factory) {
-	   true ? module.exports = factory() :
-	  typeof define === 'function' && define.amd ? define(factory) :
-	  (global.CodeMirror = factory());
-	}(this, (function () { 'use strict';
-
-	// Kludges for bugs and behavior differences that can't be feature
-	// detected are enabled based on userAgent etc sniffing.
-	var userAgent = navigator.userAgent
-	var platform = navigator.platform
-
-	var gecko = /gecko\/\d/i.test(userAgent)
-	var ie_upto10 = /MSIE \d/.test(userAgent)
-	var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(userAgent)
-	var edge = /Edge\/(\d+)/.exec(userAgent)
-	var ie = ie_upto10 || ie_11up || edge
-	var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : +(edge || ie_11up)[1])
-	var webkit = !edge && /WebKit\//.test(userAgent)
-	var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(userAgent)
-	var chrome = !edge && /Chrome\//.test(userAgent)
-	var presto = /Opera\//.test(userAgent)
-	var safari = /Apple Computer/.test(navigator.vendor)
-	var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(userAgent)
-	var phantom = /PhantomJS/.test(userAgent)
-
-	var ios = !edge && /AppleWebKit/.test(userAgent) && /Mobile\/\w+/.test(userAgent)
-	var android = /Android/.test(userAgent)
-	// This is woefully incomplete. Suggestions for alternative methods welcome.
-	var mobile = ios || android || /webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(userAgent)
-	var mac = ios || /Mac/.test(platform)
-	var chromeOS = /\bCrOS\b/.test(userAgent)
-	var windows = /win/i.test(platform)
-
-	var presto_version = presto && userAgent.match(/Version\/(\d*\.\d*)/)
-	if (presto_version) { presto_version = Number(presto_version[1]) }
-	if (presto_version && presto_version >= 15) { presto = false; webkit = true }
-	// Some browsers use the wrong event properties to signal cmd/ctrl on OS X
-	var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11))
-	var captureRightClick = gecko || (ie && ie_version >= 9)
-
-	function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*") }
-
-	var rmClass = function(node, cls) {
-	  var current = node.className
-	  var match = classTest(cls).exec(current)
-	  if (match) {
-	    var after = current.slice(match.index + match[0].length)
-	    node.className = current.slice(0, match.index) + (after ? match[1] + after : "")
-	  }
-	}
-
-	function removeChildren(e) {
-	  for (var count = e.childNodes.length; count > 0; --count)
-	    { e.removeChild(e.firstChild) }
-	  return e
-	}
-
-	function removeChildrenAndAdd(parent, e) {
-	  return removeChildren(parent).appendChild(e)
-	}
-
-	function elt(tag, content, className, style) {
-	  var e = document.createElement(tag)
-	  if (className) { e.className = className }
-	  if (style) { e.style.cssText = style }
-	  if (typeof content == "string") { e.appendChild(document.createTextNode(content)) }
-	  else if (content) { for (var i = 0; i < content.length; ++i) { e.appendChild(content[i]) } }
-	  return e
-	}
-	// wrapper for elt, which removes the elt from the accessibility tree
-	function eltP(tag, content, className, style) {
-	  var e = elt(tag, content, className, style)
-	  e.setAttribute("role", "presentation")
-	  return e
-	}
-
-	var range
-	if (document.createRange) { range = function(node, start, end, endNode) {
-	  var r = document.createRange()
-	  r.setEnd(endNode || node, end)
-	  r.setStart(node, start)
-	  return r
-	} }
-	else { range = function(node, start, end) {
-	  var r = document.body.createTextRange()
-	  try { r.moveToElementText(node.parentNode) }
-	  catch(e) { return r }
-	  r.collapse(true)
-	  r.moveEnd("character", end)
-	  r.moveStart("character", start)
-	  return r
-	} }
-
-	function contains(parent, child) {
-	  if (child.nodeType == 3) // Android browser always returns false when child is a textnode
-	    { child = child.parentNode }
-	  if (parent.contains)
-	    { return parent.contains(child) }
-	  do {
-	    if (child.nodeType == 11) { child = child.host }
-	    if (child == parent) { return true }
-	  } while (child = child.parentNode)
-	}
-
-	function activeElt() {
-	  // IE and Edge may throw an "Unspecified Error" when accessing document.activeElement.
-	  // IE < 10 will throw when accessed while the page is loading or in an iframe.
-	  // IE > 9 and Edge will throw when accessed in an iframe if document.body is unavailable.
-	  var activeElement
-	  try {
-	    activeElement = document.activeElement
-	  } catch(e) {
-	    activeElement = document.body || null
-	  }
-	  while (activeElement && activeElement.shadowRoot && activeElement.shadowRoot.activeElement)
-	    { activeElement = activeElement.shadowRoot.activeElement }
-	  return activeElement
-	}
-
-	function addClass(node, cls) {
-	  var current = node.className
-	  if (!classTest(cls).test(current)) { node.className += (current ? " " : "") + cls }
-	}
-	function joinClasses(a, b) {
-	  var as = a.split(" ")
-	  for (var i = 0; i < as.length; i++)
-	    { if (as[i] && !classTest(as[i]).test(b)) { b += " " + as[i] } }
-	  return b
-	}
-
-	var selectInput = function(node) { node.select() }
-	if (ios) // Mobile Safari apparently has a bug where select() is broken.
-	  { selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length } }
-	else if (ie) // Suppress mysterious IE10 errors
-	  { selectInput = function(node) { try { node.select() } catch(_e) {} } }
-
-	function bind(f) {
-	  var args = Array.prototype.slice.call(arguments, 1)
-	  return function(){return f.apply(null, args)}
-	}
-
-	function copyObj(obj, target, overwrite) {
-	  if (!target) { target = {} }
-	  for (var prop in obj)
-	    { if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop)))
-	      { target[prop] = obj[prop] } }
-	  return target
-	}
-
-	// Counts the column offset in a string, taking tabs into account.
-	// Used mostly to find indentation.
-	function countColumn(string, end, tabSize, startIndex, startValue) {
-	  if (end == null) {
-	    end = string.search(/[^\s\u00a0]/)
-	    if (end == -1) { end = string.length }
-	  }
-	  for (var i = startIndex || 0, n = startValue || 0;;) {
-	    var nextTab = string.indexOf("\t", i)
-	    if (nextTab < 0 || nextTab >= end)
-	      { return n + (end - i) }
-	    n += nextTab - i
-	    n += tabSize - (n % tabSize)
-	    i = nextTab + 1
-	  }
-	}
-
-	var Delayed = function() {this.id = null};
-	Delayed.prototype.set = function (ms, f) {
-	  clearTimeout(this.id)
-	  this.id = setTimeout(f, ms)
-	};
-
-	function indexOf(array, elt) {
-	  for (var i = 0; i < array.length; ++i)
-	    { if (array[i] == elt) { return i } }
-	  return -1
-	}
-
-	// Number of pixels added to scroller and sizer to hide scrollbar
-	var scrollerGap = 30
-
-	// Returned or thrown by various protocols to signal 'I'm not
-	// handling this'.
-	var Pass = {toString: function(){return "CodeMirror.Pass"}}
-
-	// Reused option objects for setSelection & friends
-	var sel_dontScroll = {scroll: false};
-	var sel_mouse = {origin: "*mouse"};
-	var sel_move = {origin: "+move"};
-	// The inverse of countColumn -- find the offset that corresponds to
-	// a particular column.
-	function findColumn(string, goal, tabSize) {
-	  for (var pos = 0, col = 0;;) {
-	    var nextTab = string.indexOf("\t", pos)
-	    if (nextTab == -1) { nextTab = string.length }
-	    var skipped = nextTab - pos
-	    if (nextTab == string.length || col + skipped >= goal)
-	      { return pos + Math.min(skipped, goal - col) }
-	    col += nextTab - pos
-	    col += tabSize - (col % tabSize)
-	    pos = nextTab + 1
-	    if (col >= goal) { return pos }
-	  }
-	}
-
-	var spaceStrs = [""]
-	function spaceStr(n) {
-	  while (spaceStrs.length <= n)
-	    { spaceStrs.push(lst(spaceStrs) + " ") }
-	  return spaceStrs[n]
-	}
-
-	function lst(arr) { return arr[arr.length-1] }
-
-	function map(array, f) {
-	  var out = []
-	  for (var i = 0; i < array.length; i++) { out[i] = f(array[i], i) }
-	  return out
-	}
-
-	function insertSorted(array, value, score) {
-	  var pos = 0, priority = score(value)
-	  while (pos < array.length && score(array[pos]) <= priority) { pos++ }
-	  array.splice(pos, 0, value)
-	}
-
-	function nothing() {}
-
-	function createObj(base, props) {
-	  var inst
-	  if (Object.create) {
-	    inst = Object.create(base)
-	  } else {
-	    nothing.prototype = base
-	    inst = new nothing()
-	  }
-	  if (props) { copyObj(props, inst) }
-	  return inst
-	}
-
-	var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/
-	function isWordCharBasic(ch) {
-	  return /\w/.test(ch) || ch > "\x80" &&
-	    (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch))
-	}
-	function isWordChar(ch, helper) {
-	  if (!helper) { return isWordCharBasic(ch) }
-	  if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) { return true }
-	  return helper.test(ch)
-	}
-
-	function isEmpty(obj) {
-	  for (var n in obj) { if (obj.hasOwnProperty(n) && obj[n]) { return false } }
-	  return true
-	}
-
-	// Extending unicode characters. A series of a non-extending char +
-	// any number of extending chars is treated as a single unit as far
-	// as editing and measuring is concerned. This is not fully correct,
-	// since some scripts/fonts/browsers also treat other configurations
-	// of code points as a group.
-	var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/
-	function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch) }
-
-	// Returns a number from the range [`0`; `str.length`] unless `pos` is outside that range.
-	function skipExtendingChars(str, pos, dir) {
-	  while ((dir < 0 ? pos > 0 : pos < str.length) && isExtendingChar(str.charAt(pos))) { pos += dir }
-	  return pos
-	}
-
-	// Returns the value from the range [`from`; `to`] that satisfies
-	// `pred` and is closest to `from`. Assumes that at least `to`
-	// satisfies `pred`. Supports `from` being greater than `to`.
-	function findFirst(pred, from, to) {
-	  // At any point we are certain `to` satisfies `pred`, don't know
-	  // whether `from` does.
-	  var dir = from > to ? -1 : 1
-	  for (;;) {
-	    if (from == to) { return from }
-	    var midF = (from + to) / 2, mid = dir < 0 ? Math.ceil(midF) : Math.floor(midF)
-	    if (mid == from) { return pred(mid) ? from : to }
-	    if (pred(mid)) { to = mid }
-	    else { from = mid + dir }
-	  }
-	}
-
-	// The display handles the DOM integration, both for input reading
-	// and content drawing. It holds references to DOM nodes and
-	// display-related state.
-
-	function Display(place, doc, input) {
-	  var d = this
-	  this.input = input
-
-	  // Covers bottom-right square when both scrollbars are present.
-	  d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler")
-	  d.scrollbarFiller.setAttribute("cm-not-content", "true")
-	  // Covers bottom of gutter when coverGutterNextToScrollbar is on
-	  // and h scrollbar is present.
-	  d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler")
-	  d.gutterFiller.setAttribute("cm-not-content", "true")
-	  // Will contain the actual code, positioned to cover the viewport.
-	  d.lineDiv = eltP("div", null, "CodeMirror-code")
-	  // Elements are added to these to represent selection and cursors.
-	  d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1")
-	  d.cursorDiv = elt("div", null, "CodeMirror-cursors")
-	  // A visibility: hidden element used to find the size of things.
-	  d.measure = elt("div", null, "CodeMirror-measure")
-	  // When lines outside of the viewport are measured, they are drawn in this.
-	  d.lineMeasure = elt("div", null, "CodeMirror-measure")
-	  // Wraps everything that needs to exist inside the vertically-padded coordinate system
-	  d.lineSpace = eltP("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
-	                    null, "position: relative; outline: none")
-	  var lines = eltP("div", [d.lineSpace], "CodeMirror-lines")
-	  // Moved around its parent to cover visible view.
-	  d.mover = elt("div", [lines], null, "position: relative")
-	  // Set to the height of the document, allowing scrolling.
-	  d.sizer = elt("div", [d.mover], "CodeMirror-sizer")
-	  d.sizerWidth = null
-	  // Behavior of elts with overflow: auto and padding is
-	  // inconsistent across browsers. This is used to ensure the
-	  // scrollable area is big enough.
-	  d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;")
-	  // Will contain the gutters, if any.
-	  d.gutters = elt("div", null, "CodeMirror-gutters")
-	  d.lineGutter = null
-	  // Actual scrollable element.
-	  d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll")
-	  d.scroller.setAttribute("tabIndex", "-1")
-	  // The element in which the editor lives.
-	  d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror")
-
-	  // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
-	  if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0 }
-	  if (!webkit && !(gecko && mobile)) { d.scroller.draggable = true }
-
-	  if (place) {
-	    if (place.appendChild) { place.appendChild(d.wrapper) }
-	    else { place(d.wrapper) }
-	  }
-
-	  // Current rendered range (may be bigger than the view window).
-	  d.viewFrom = d.viewTo = doc.first
-	  d.reportedViewFrom = d.reportedViewTo = doc.first
-	  // Information about the rendered lines.
-	  d.view = []
-	  d.renderedView = null
-	  // Holds info about a single rendered line when it was rendered
-	  // for measurement, while not in view.
-	  d.externalMeasured = null
-	  // Empty space (in pixels) above the view
-	  d.viewOffset = 0
-	  d.lastWrapHeight = d.lastWrapWidth = 0
-	  d.updateLineNumbers = null
-
-	  d.nativeBarWidth = d.barHeight = d.barWidth = 0
-	  d.scrollbarsClipped = false
-
-	  // Used to only resize the line number gutter when necessary (when
-	  // the amount of lines crosses a boundary that makes its width change)
-	  d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null
-	  // Set to true when a non-horizontal-scrolling line widget is
-	  // added. As an optimization, line widget aligning is skipped when
-	  // this is false.
-	  d.alignWidgets = false
-
-	  d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null
-
-	  // Tracks the maximum line length so that the horizontal scrollbar
-	  // can be kept static when scrolling.
-	  d.maxLine = null
-	  d.maxLineLength = 0
-	  d.maxLineChanged = false
-
-	  // Used for measuring wheel scrolling granularity
-	  d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null
-
-	  // True when shift is held down.
-	  d.shift = false
-
-	  // Used to track whether anything happened since the context menu
-	  // was opened.
-	  d.selForContextMenu = null
-
-	  d.activeTouch = null
-
-	  input.init(d)
-	}
-
-	// Find the line object corresponding to the given line number.
-	function getLine(doc, n) {
-	  n -= doc.first
-	  if (n < 0 || n >= doc.size) { throw new Error("There is no line " + (n + doc.first) + " in the document.") }
-	  var chunk = doc
-	  while (!chunk.lines) {
-	    for (var i = 0;; ++i) {
-	      var child = chunk.children[i], sz = child.chunkSize()
-	      if (n < sz) { chunk = child; break }
-	      n -= sz
-	    }
-	  }
-	  return chunk.lines[n]
-	}
-
-	// Get the part of a document between two positions, as an array of
-	// strings.
-	function getBetween(doc, start, end) {
-	  var out = [], n = start.line
-	  doc.iter(start.line, end.line + 1, function (line) {
-	    var text = line.text
-	    if (n == end.line) { text = text.slice(0, end.ch) }
-	    if (n == start.line) { text = text.slice(start.ch) }
-	    out.push(text)
-	    ++n
-	  })
-	  return out
-	}
-	// Get the lines between from and to, as array of strings.
-	function getLines(doc, from, to) {
-	  var out = []
-	  doc.iter(from, to, function (line) { out.push(line.text) }) // iter aborts when callback returns truthy value
-	  return out
-	}
-
-	// Update the height of a line, propagating the height change
-	// upwards to parent nodes.
-	function updateLineHeight(line, height) {
-	  var diff = height - line.height
-	  if (diff) { for (var n = line; n; n = n.parent) { n.height += diff } }
-	}
-
-	// Given a line object, find its line number by walking up through
-	// its parent links.
-	function lineNo(line) {
-	  if (line.parent == null) { return null }
-	  var cur = line.parent, no = indexOf(cur.lines, line)
-	  for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
-	    for (var i = 0;; ++i) {
-	      if (chunk.children[i] == cur) { break }
-	      no += chunk.children[i].chunkSize()
-	    }
-	  }
-	  return no + cur.first
-	}
-
-	// Find the line at the given vertical position, using the height
-	// information in the document tree.
-	function lineAtHeight(chunk, h) {
-	  var n = chunk.first
-	  outer: do {
-	    for (var i$1 = 0; i$1 < chunk.children.length; ++i$1) {
-	      var child = chunk.children[i$1], ch = child.height
-	      if (h < ch) { chunk = child; continue outer }
-	      h -= ch
-	      n += child.chunkSize()
-	    }
-	    return n
-	  } while (!chunk.lines)
-	  var i = 0
-	  for (; i < chunk.lines.length; ++i) {
-	    var line = chunk.lines[i], lh = line.height
-	    if (h < lh) { break }
-	    h -= lh
-	  }
-	  return n + i
-	}
-
-	function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size}
-
-	function lineNumberFor(options, i) {
-	  return String(options.lineNumberFormatter(i + options.firstLineNumber))
-	}
-
-	// A Pos instance represents a position within the text.
-	function Pos(line, ch, sticky) {
-	  if ( sticky === void 0 ) sticky = null;
-
-	  if (!(this instanceof Pos)) { return new Pos(line, ch, sticky) }
-	  this.line = line
-	  this.ch = ch
-	  this.sticky = sticky
-	}
-
-	// Compare two positions, return 0 if they are the same, a negative
-	// number when a is less, and a positive number otherwise.
-	function cmp(a, b) { return a.line - b.line || a.ch - b.ch }
-
-	function equalCursorPos(a, b) { return a.sticky == b.sticky && cmp(a, b) == 0 }
-
-	function copyPos(x) {return Pos(x.line, x.ch)}
-	function maxPos(a, b) { return cmp(a, b) < 0 ? b : a }
-	function minPos(a, b) { return cmp(a, b) < 0 ? a : b }
-
-	// Most of the external API clips given positions to make sure they
-	// actually exist within the document.
-	function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1))}
-	function clipPos(doc, pos) {
-	  if (pos.line < doc.first) { return Pos(doc.first, 0) }
-	  var last = doc.first + doc.size - 1
-	  if (pos.line > last) { return Pos(last, getLine(doc, last).text.length) }
-	  return clipToLen(pos, getLine(doc, pos.line).text.length)
-	}
-	function clipToLen(pos, linelen) {
-	  var ch = pos.ch
-	  if (ch == null || ch > linelen) { return Pos(pos.line, linelen) }
-	  else if (ch < 0) { return Pos(pos.line, 0) }
-	  else { return pos }
-	}
-	function clipPosArray(doc, array) {
-	  var out = []
-	  for (var i = 0; i < array.length; i++) { out[i] = clipPos(doc, array[i]) }
-	  return out
-	}
-
-	// Optimize some code when these features are not used.
-	var sawReadOnlySpans = false;
-	var sawCollapsedSpans = false;
-	function seeReadOnlySpans() {
-	  sawReadOnlySpans = true
-	}
-
-	function seeCollapsedSpans() {
-	  sawCollapsedSpans = true
-	}
-
-	// TEXTMARKER SPANS
-
-	function MarkedSpan(marker, from, to) {
-	  this.marker = marker
-	  this.from = from; this.to = to
-	}
-
-	// Search an array of spans for a span matching the given marker.
-	function getMarkedSpanFor(spans, marker) {
-	  if (spans) { for (var i = 0; i < spans.length; ++i) {
-	    var span = spans[i]
-	    if (span.marker == marker) { return span }
-	  } }
-	}
-	// Remove a span from an array, returning undefined if no spans are
-	// left (we don't store arrays for lines without spans).
-	function removeMarkedSpan(spans, span) {
-	  var r
-	  for (var i = 0; i < spans.length; ++i)
-	    { if (spans[i] != span) { (r || (r = [])).push(spans[i]) } }
-	  return r
-	}
-	// Add a span to a line.
-	function addMarkedSpan(line, span) {
-	  line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span]
-	  span.marker.attachLine(line)
-	}
-
-	// Used for the algorithm that adjusts markers for a change in the
-	// document. These functions cut an array of spans at a given
-	// character position, returning an array of remaining chunks (or
-	// undefined if nothing remains).
-	function markedSpansBefore(old, startCh, isInsert) {
-	  var nw
-	  if (old) { for (var i = 0; i < old.length; ++i) {
-	    var span = old[i], marker = span.marker
-	    var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh)
-	    if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) {
-	      var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh)
-	      ;(nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to))
-	    }
-	  } }
-	  return nw
-	}
-	function markedSpansAfter(old, endCh, isInsert) {
-	  var nw
-	  if (old) { for (var i = 0; i < old.length; ++i) {
-	    var span = old[i], marker = span.marker
-	    var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh)
-	    if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) {
-	      var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh)
-	      ;(nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,
-	                                            span.to == null ? null : span.to - endCh))
-	    }
-	  } }
-	  return nw
-	}
-
-	// Given a change object, compute the new set of marker spans that
-	// cover the line in which the change took place. Removes spans
-	// entirely within the change, reconnects spans belonging to the
-	// same marker that appear on both sides of the change, and cuts off
-	// spans partially within the change. Returns an array of span
-	// arrays with one element for each line in (after) the change.
-	function stretchSpansOverChange(doc, change) {
-	  if (change.full) { return null }
-	  var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans
-	  var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans
-	  if (!oldFirst && !oldLast) { return null }
-
-	  var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0
-	  // Get the spans that 'stick out' on both sides
-	  var first = markedSpansBefore(oldFirst, startCh, isInsert)
-	  var last = markedSpansAfter(oldLast, endCh, isInsert)
-
-	  // Next, merge those two ends
-	  var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0)
-	  if (first) {
-	    // Fix up .to properties of first
-	    for (var i = 0; i < first.length; ++i) {
-	      var span = first[i]
-	      if (span.to == null) {
-	        var found = getMarkedSpanFor(last, span.marker)
-	        if (!found) { span.to = startCh }
-	        else if (sameLine) { span.to = found.to == null ? null : found.to + offset }
-	      }
-	    }
-	  }
-	  if (last) {
-	    // Fix up .from in last (or move them into first in case of sameLine)
-	    for (var i$1 = 0; i$1 < last.length; ++i$1) {
-	      var span$1 = last[i$1]
-	      if (span$1.to != null) { span$1.to += offset }
-	      if (span$1.from == null) {
-	        var found$1 = getMarkedSpanFor(first, span$1.marker)
-	        if (!found$1) {
-	          span$1.from = offset
-	          if (sameLine) { (first || (first = [])).push(span$1) }
-	        }
-	      } else {
-	        span$1.from += offset
-	        if (sameLine) { (first || (first = [])).push(span$1) }
-	      }
-	    }
-	  }
-	  // Make sure we didn't create any zero-length spans
-	  if (first) { first = clearEmptySpans(first) }
-	  if (last && last != first) { last = clearEmptySpans(last) }
-
-	  var newMarkers = [first]
-	  if (!sameLine) {
-	    // Fill gap with whole-line-spans
-	    var gap = change.text.length - 2, gapMarkers
-	    if (gap > 0 && first)
-	      { for (var i$2 = 0; i$2 < first.length; ++i$2)
-	        { if (first[i$2].to == null)
-	          { (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i$2].marker, null, null)) } } }
-	    for (var i$3 = 0; i$3 < gap; ++i$3)
-	      { newMarkers.push(gapMarkers) }
-	    newMarkers.push(last)
-	  }
-	  return newMarkers
-	}
-
-	// Remove spans that are empty and don't have a clearWhenEmpty
-	// option of false.
-	function clearEmptySpans(spans) {
-	  for (var i = 0; i < spans.length; ++i) {
-	    var span = spans[i]
-	    if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)
-	      { spans.splice(i--, 1) }
-	  }
-	  if (!spans.length) { return null }
-	  return spans
-	}
-
-	// Used to 'clip' out readOnly ranges when making a change.
-	function removeReadOnlyRanges(doc, from, to) {
-	  var markers = null
-	  doc.iter(from.line, to.line + 1, function (line) {
-	    if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) {
-	      var mark = line.markedSpans[i].marker
-	      if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))
-	        { (markers || (markers = [])).push(mark) }
-	    } }
-	  })
-	  if (!markers) { return null }
-	  var parts = [{from: from, to: to}]
-	  for (var i = 0; i < markers.length; ++i) {
-	    var mk = markers[i], m = mk.find(0)
-	    for (var j = 0; j < parts.length; ++j) {
-	      var p = parts[j]
-	      if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) { continue }
-	      var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to)
-	      if (dfrom < 0 || !mk.inclusiveLeft && !dfrom)
-	        { newParts.push({from: p.from, to: m.from}) }
-	      if (dto > 0 || !mk.inclusiveRight && !dto)
-	        { newParts.push({from: m.to, to: p.to}) }
-	      parts.splice.apply(parts, newParts)
-	      j += newParts.length - 3
-	    }
-	  }
-	  return parts
-	}
-
-	// Connect or disconnect spans from a line.
-	function detachMarkedSpans(line) {
-	  var spans = line.markedSpans
-	  if (!spans) { return }
-	  for (var i = 0; i < spans.length; ++i)
-	    { spans[i].marker.detachLine(line) }
-	  line.markedSpans = null
-	}
-	function attachMarkedSpans(line, spans) {
-	  if (!spans) { return }
-	  for (var i = 0; i < spans.length; ++i)
-	    { spans[i].marker.attachLine(line) }
-	  line.markedSpans = spans
-	}
-
-	// Helpers used when computing which overlapping collapsed span
-	// counts as the larger one.
-	function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0 }
-	function extraRight(marker) { return marker.inclusiveRight ? 1 : 0 }
-
-	// Returns a number indicating which of two overlapping collapsed
-	// spans is larger (and thus includes the other). Falls back to
-	// comparing ids when the spans cover exactly the same range.
-	function compareCollapsedMarkers(a, b) {
-	  var lenDiff = a.lines.length - b.lines.length
-	  if (lenDiff != 0) { return lenDiff }
-	  var aPos = a.find(), bPos = b.find()
-	  var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b)
-	  if (fromCmp) { return -fromCmp }
-	  var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b)
-	  if (toCmp) { return toCmp }
-	  return b.id - a.id
-	}
-
-	// Find out whether a line ends or starts in a collapsed span. If
-	// so, return the marker for that span.
-	function collapsedSpanAtSide(line, start) {
-	  var sps = sawCollapsedSpans && line.markedSpans, found
-	  if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) {
-	    sp = sps[i]
-	    if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&
-	        (!found || compareCollapsedMarkers(found, sp.marker) < 0))
-	      { found = sp.marker }
-	  } }
-	  return found
-	}
-	function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true) }
-	function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false) }
-
-	// Test whether there exists a collapsed span that partially
-	// overlaps (covers the start or end, but not both) of a new span.
-	// Such overlap is not allowed.
-	function conflictingCollapsedRange(doc, lineNo, from, to, marker) {
-	  var line = getLine(doc, lineNo)
-	  var sps = sawCollapsedSpans && line.markedSpans
-	  if (sps) { for (var i = 0; i < sps.length; ++i) {
-	    var sp = sps[i]
-	    if (!sp.marker.collapsed) { continue }
-	    var found = sp.marker.find(0)
-	    var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker)
-	    var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker)
-	    if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) { continue }
-	    if (fromCmp <= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.to, from) >= 0 : cmp(found.to, from) > 0) ||
-	        fromCmp >= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.from, to) <= 0 : cmp(found.from, to) < 0))
-	      { return true }
-	  } }
-	}
-
-	// A visual line is a line as drawn on the screen. Folding, for
-	// example, can cause multiple logical lines to appear on the same
-	// visual line. This finds the start of the visual line that the
-	// given line is part of (usually that is the line itself).
-	function visualLine(line) {
-	  var merged
-	  while (merged = collapsedSpanAtStart(line))
-	    { line = merged.find(-1, true).line }
-	  return line
-	}
-
-	function visualLineEnd(line) {
-	  var merged
-	  while (merged = collapsedSpanAtEnd(line))
-	    { line = merged.find(1, true).line }
-	  return line
-	}
-
-	// Returns an array of logical lines that continue the visual line
-	// started by the argument, or undefined if there are no such lines.
-	function visualLineContinued(line) {
-	  var merged, lines
-	  while (merged = collapsedSpanAtEnd(line)) {
-	    line = merged.find(1, true).line
-	    ;(lines || (lines = [])).push(line)
-	  }
-	  return lines
-	}
-
-	// Get the line number of the start of the visual line that the
-	// given line number is part of.
-	function visualLineNo(doc, lineN) {
-	  var line = getLine(doc, lineN), vis = visualLine(line)
-	  if (line == vis) { return lineN }
-	  return lineNo(vis)
-	}
-
-	// Get the line number of the start of the next visual line after
-	// the given line.
-	function visualLineEndNo(doc, lineN) {
-	  if (lineN > doc.lastLine()) { return lineN }
-	  var line = getLine(doc, lineN), merged
-	  if (!lineIsHidden(doc, line)) { return lineN }
-	  while (merged = collapsedSpanAtEnd(line))
-	    { line = merged.find(1, true).line }
-	  return lineNo(line) + 1
-	}
-
-	// Compute whether a line is hidden. Lines count as hidden when they
-	// are part of a visual line that starts with another line, or when
-	// they are entirely covered by collapsed, non-widget span.
-	function lineIsHidden(doc, line) {
-	  var sps = sawCollapsedSpans && line.markedSpans
-	  if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) {
-	    sp = sps[i]
-	    if (!sp.marker.collapsed) { continue }
-	    if (sp.from == null) { return true }
-	    if (sp.marker.widgetNode) { continue }
-	    if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))
-	      { return true }
-	  } }
-	}
-	function lineIsHiddenInner(doc, line, span) {
-	  if (span.to == null) {
-	    var end = span.marker.find(1, true)
-	    return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker))
-	  }
-	  if (span.marker.inclusiveRight && span.to == line.text.length)
-	    { return true }
-	  for (var sp = (void 0), i = 0; i < line.markedSpans.length; ++i) {
-	    sp = line.markedSpans[i]
-	    if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to &&
-	        (sp.to == null || sp.to != span.from) &&
-	        (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
-	        lineIsHiddenInner(doc, line, sp)) { return true }
-	  }
-	}
-
-	// Find the height above the given line.
-	function heightAtLine(lineObj) {
-	  lineObj = visualLine(lineObj)
-
-	  var h = 0, chunk = lineObj.parent
-	  for (var i = 0; i < chunk.lines.length; ++i) {
-	    var line = chunk.lines[i]
-	    if (line == lineObj) { break }
-	    else { h += line.height }
-	  }
-	  for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
-	    for (var i$1 = 0; i$1 < p.children.length; ++i$1) {
-	      var cur = p.children[i$1]
-	      if (cur == chunk) { break }
-	      else { h += cur.height }
-	    }
-	  }
-	  return h
-	}
-
-	// Compute the character length of a line, taking into account
-	// collapsed ranges (see markText) that might hide parts, and join
-	// other lines onto it.
-	function lineLength(line) {
-	  if (line.height == 0) { return 0 }
-	  var len = line.text.length, merged, cur = line
-	  while (merged = collapsedSpanAtStart(cur)) {
-	    var found = merged.find(0, true)
-	    cur = found.from.line
-	    len += found.from.ch - found.to.ch
-	  }
-	  cur = line
-	  while (merged = collapsedSpanAtEnd(cur)) {
-	    var found$1 = merged.find(0, true)
-	    len -= cur.text.length - found$1.from.ch
-	    cur = found$1.to.line
-	    len += cur.text.length - found$1.to.ch
-	  }
-	  return len
-	}
-
-	// Find the longest line in the document.
-	function findMaxLine(cm) {
-	  var d = cm.display, doc = cm.doc
-	  d.maxLine = getLine(doc, doc.first)
-	  d.maxLineLength = lineLength(d.maxLine)
-	  d.maxLineChanged = true
-	  doc.iter(function (line) {
-	    var len = lineLength(line)
-	    if (len > d.maxLineLength) {
-	      d.maxLineLength = len
-	      d.maxLine = line
-	    }
-	  })
-	}
-
-	// BIDI HELPERS
-
-	function iterateBidiSections(order, from, to, f) {
-	  if (!order) { return f(from, to, "ltr", 0) }
-	  var found = false
-	  for (var i = 0; i < order.length; ++i) {
-	    var part = order[i]
-	    if (part.from < to && part.to > from || from == to && part.to == from) {
-	      f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr", i)
-	      found = true
-	    }
-	  }
-	  if (!found) { f(from, to, "ltr") }
-	}
-
-	var bidiOther = null
-	function getBidiPartAt(order, ch, sticky) {
-	  var found
-	  bidiOther = null
-	  for (var i = 0; i < order.length; ++i) {
-	    var cur = order[i]
-	    if (cur.from < ch && cur.to > ch) { return i }
-	    if (cur.to == ch) {
-	      if (cur.from != cur.to && sticky == "before") { found = i }
-	      else { bidiOther = i }
-	    }
-	    if (cur.from == ch) {
-	      if (cur.from != cur.to && sticky != "before") { found = i }
-	      else { bidiOther = i }
-	    }
-	  }
-	  return found != null ? found : bidiOther
-	}
-
-	// Bidirectional ordering algorithm
-	// See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
-	// that this (partially) implements.
-
-	// One-char codes used for character types:
-	// L (L):   Left-to-Right
-	// R (R):   Right-to-Left
-	// r (AL):  Right-to-Left Arabic
-	// 1 (EN):  European Number
-	// + (ES):  European Number Separator
-	// % (ET):  European Number Terminator
-	// n (AN):  Arabic Number
-	// , (CS):  Common Number Separator
-	// m (NSM): Non-Spacing Mark
-	// b (BN):  Boundary Neutral
-	// s (B):   Paragraph Separator
-	// t (S):   Segment Separator
-	// w (WS):  Whitespace
-	// N (ON):  Other Neutrals
-
-	// Returns null if characters are ordered as they appear
-	// (left-to-right), or an array of sections ({from, to, level}
-	// objects) in the order in which they occur visually.
-	var bidiOrdering = (function() {
-	  // Character types for codepoints 0 to 0xff
-	  var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN"
-	  // Character types for codepoints 0x600 to 0x6f9
-	  var arabicTypes = "nnnnnnNNr%%r,rNNmmmmmmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmmmnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmnNmmmmmmrrmmNmmmmrr1111111111"
-	  function charType(code) {
-	    if (code <= 0xf7) { return lowTypes.charAt(code) }
-	    else if (0x590 <= code && code <= 0x5f4) { return "R" }
-	    else if (0x600 <= code && code <= 0x6f9) { return arabicTypes.charAt(code - 0x600) }
-	    else if (0x6ee <= code && code <= 0x8ac) { return "r" }
-	    else if (0x2000 <= code && code <= 0x200b) { return "w" }
-	    else if (code == 0x200c) { return "b" }
-	    else { return "L" }
-	  }
-
-	  var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/
-	  var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/
-
-	  function BidiSpan(level, from, to) {
-	    this.level = level
-	    this.from = from; this.to = to
-	  }
-
-	  return function(str, direction) {
-	    var outerType = direction == "ltr" ? "L" : "R"
-
-	    if (str.length == 0 || direction == "ltr" && !bidiRE.test(str)) { return false }
-	    var len = str.length, types = []
-	    for (var i = 0; i < len; ++i)
-	      { types.push(charType(str.charCodeAt(i))) }
-
-	    // W1. Examine each non-spacing mark (NSM) in the level run, and
-	    // change the type of the NSM to the type of the previous
-	    // character. If the NSM is at the start of the level run, it will
-	    // get the type of sor.
-	    for (var i$1 = 0, prev = outerType; i$1 < len; ++i$1) {
-	      var type = types[i$1]
-	      if (type == "m") { types[i$1] = prev }
-	      else { prev = type }
-	    }
-
-	    // W2. Search backwards from each instance of a European number
-	    // until the first strong type (R, L, AL, or sor) is found. If an
-	    // AL is found, change the type of the European number to Arabic
-	    // number.
-	    // W3. Change all ALs to R.
-	    for (var i$2 = 0, cur = outerType; i$2 < len; ++i$2) {
-	      var type$1 = types[i$2]
-	      if (type$1 == "1" && cur == "r") { types[i$2] = "n" }
-	      else if (isStrong.test(type$1)) { cur = type$1; if (type$1 == "r") { types[i$2] = "R" } }
-	    }
-
-	    // W4. A single European separator between two European numbers
-	    // changes to a European number. A single common separator between
-	    // two numbers of the same type changes to that type.
-	    for (var i$3 = 1, prev$1 = types[0]; i$3 < len - 1; ++i$3) {
-	      var type$2 = types[i$3]
-	      if (type$2 == "+" && prev$1 == "1" && types[i$3+1] == "1") { types[i$3] = "1" }
-	      else if (type$2 == "," && prev$1 == types[i$3+1] &&
-	               (prev$1 == "1" || prev$1 == "n")) { types[i$3] = prev$1 }
-	      prev$1 = type$2
-	    }
-
-	    // W5. A sequence of European terminators adjacent to European
-	    // numbers changes to all European numbers.
-	    // W6. Otherwise, separators and terminators change to Other
-	    // Neutral.
-	    for (var i$4 = 0; i$4 < len; ++i$4) {
-	      var type$3 = types[i$4]
-	      if (type$3 == ",") { types[i$4] = "N" }
-	      else if (type$3 == "%") {
-	        var end = (void 0)
-	        for (end = i$4 + 1; end < len && types[end] == "%"; ++end) {}
-	        var replace = (i$4 && types[i$4-1] == "!") || (end < len && types[end] == "1") ? "1" : "N"
-	        for (var j = i$4; j < end; ++j) { types[j] = replace }
-	        i$4 = end - 1
-	      }
-	    }
-
-	    // W7. Search backwards from each instance of a European number
-	    // until the first strong type (R, L, or sor) is found. If an L is
-	    // found, then change the type of the European number to L.
-	    for (var i$5 = 0, cur$1 = outerType; i$5 < len; ++i$5) {
-	      var type$4 = types[i$5]
-	      if (cur$1 == "L" && type$4 == "1") { types[i$5] = "L" }
-	      else if (isStrong.test(type$4)) { cur$1 = type$4 }
-	    }
-
-	    // N1. A sequence of neutrals takes the direction of the
-	    // surrounding strong text if the text on both sides has the same
-	    // direction. European and Arabic numbers act as if they were R in
-	    // terms of their influence on neutrals. Start-of-level-run (sor)
-	    // and end-of-level-run (eor) are used at level run boundaries.
-	    // N2. Any remaining neutrals take the embedding direction.
-	    for (var i$6 = 0; i$6 < len; ++i$6) {
-	      if (isNeutral.test(types[i$6])) {
-	        var end$1 = (void 0)
-	        for (end$1 = i$6 + 1; end$1 < len && isNeutral.test(types[end$1]); ++end$1) {}
-	        var before = (i$6 ? types[i$6-1] : outerType) == "L"
-	        var after = (end$1 < len ? types[end$1] : outerType) == "L"
-	        var replace$1 = before == after ? (before ? "L" : "R") : outerType
-	        for (var j$1 = i$6; j$1 < end$1; ++j$1) { types[j$1] = replace$1 }
-	        i$6 = end$1 - 1
-	      }
-	    }
-
-	    // Here we depart from the documented algorithm, in order to avoid
-	    // building up an actual levels array. Since there are only three
-	    // levels (0, 1, 2) in an implementation that doesn't take
-	    // explicit embedding into account, we can build up the order on
-	    // the fly, without following the level-based algorithm.
-	    var order = [], m
-	    for (var i$7 = 0; i$7 < len;) {
-	      if (countsAsLeft.test(types[i$7])) {
-	        var start = i$7
-	        for (++i$7; i$7 < len && countsAsLeft.test(types[i$7]); ++i$7) {}
-	        order.push(new BidiSpan(0, start, i$7))
-	      } else {
-	        var pos = i$7, at = order.length
-	        for (++i$7; i$7 < len && types[i$7] != "L"; ++i$7) {}
-	        for (var j$2 = pos; j$2 < i$7;) {
-	          if (countsAsNum.test(types[j$2])) {
-	            if (pos < j$2) { order.splice(at, 0, new BidiSpan(1, pos, j$2)) }
-	            var nstart = j$2
-	            for (++j$2; j$2 < i$7 && countsAsNum.test(types[j$2]); ++j$2) {}
-	            order.splice(at, 0, new BidiSpan(2, nstart, j$2))
-	            pos = j$2
-	          } else { ++j$2 }
-	        }
-	        if (pos < i$7) { order.splice(at, 0, new BidiSpan(1, pos, i$7)) }
-	      }
-	    }
-	    if (direction == "ltr") {
-	      if (order[0].level == 1 && (m = str.match(/^\s+/))) {
-	        order[0].from = m[0].length
-	        order.unshift(new BidiSpan(0, 0, m[0].length))
-	      }
-	      if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
-	        lst(order).to -= m[0].length
-	        order.push(new BidiSpan(0, len - m[0].length, len))
-	      }
-	    }
-
-	    return direction == "rtl" ? order.reverse() : order
-	  }
-	})()
-
-	// Get the bidi ordering for the given line (and cache it). Returns
-	// false for lines that are fully left-to-right, and an array of
-	// BidiSpan objects otherwise.
-	function getOrder(line, direction) {
-	  var order = line.order
-	  if (order == null) { order = line.order = bidiOrdering(line.text, direction) }
-	  return order
-	}
-
-	// EVENT HANDLING
-
-	// Lightweight event framework. on/off also work on DOM nodes,
-	// registering native DOM handlers.
-
-	var noHandlers = []
-
-	var on = function(emitter, type, f) {
-	  if (emitter.addEventListener) {
-	    emitter.addEventListener(type, f, false)
-	  } else if (emitter.attachEvent) {
-	    emitter.attachEvent("on" + type, f)
-	  } else {
-	    var map = emitter._handlers || (emitter._handlers = {})
-	    map[type] = (map[type] || noHandlers).concat(f)
-	  }
-	}
-
-	function getHandlers(emitter, type) {
-	  return emitter._handlers && emitter._handlers[type] || noHandlers
-	}
-
-	function off(emitter, type, f) {
-	  if (emitter.removeEventListener) {
-	    emitter.removeEventListener(type, f, false)
-	  } else if (emitter.detachEvent) {
-	    emitter.detachEvent("on" + type, f)
-	  } else {
-	    var map = emitter._handlers, arr = map && map[type]
-	    if (arr) {
-	      var index = indexOf(arr, f)
-	      if (index > -1)
-	        { map[type] = arr.slice(0, index).concat(arr.slice(index + 1)) }
-	    }
-	  }
-	}
-
-	function signal(emitter, type /*, values...*/) {
-	  var handlers = getHandlers(emitter, type)
-	  if (!handlers.length) { return }
-	  var args = Array.prototype.slice.call(arguments, 2)
-	  for (var i = 0; i < handlers.length; ++i) { handlers[i].apply(null, args) }
-	}
-
-	// The DOM events that CodeMirror handles can be overridden by
-	// registering a (non-DOM) handler on the editor for the event name,
-	// and preventDefault-ing the event in that handler.
-	function signalDOMEvent(cm, e, override) {
-	  if (typeof e == "string")
-	    { e = {type: e, preventDefault: function() { this.defaultPrevented = true }} }
-	  signal(cm, override || e.type, cm, e)
-	  return e_defaultPrevented(e) || e.codemirrorIgnore
-	}
-
-	function signalCursorActivity(cm) {
-	  var arr = cm._handlers && cm._handlers.cursorActivity
-	  if (!arr) { return }
-	  var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = [])
-	  for (var i = 0; i < arr.length; ++i) { if (indexOf(set, arr[i]) == -1)
-	    { set.push(arr[i]) } }
-	}
-
-	function hasHandler(emitter, type) {
-	  return getHandlers(emitter, type).length > 0
-	}
-
-	// Add on and off methods to a constructor's prototype, to make
-	// registering events on such objects more convenient.
-	function eventMixin(ctor) {
-	  ctor.prototype.on = function(type, f) {on(this, type, f)}
-	  ctor.prototype.off = function(type, f) {off(this, type, f)}
-	}
-
-	// Due to the fact that we still support jurassic IE versions, some
-	// compatibility wrappers are needed.
-
-	function e_preventDefault(e) {
-	  if (e.preventDefault) { e.preventDefault() }
-	  else { e.returnValue = false }
-	}
-	function e_stopPropagation(e) {
-	  if (e.stopPropagation) { e.stopPropagation() }
-	  else { e.cancelBubble = true }
-	}
-	function e_defaultPrevented(e) {
-	  return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false
-	}
-	function e_stop(e) {e_preventDefault(e); e_stopPropagation(e)}
-
-	function e_target(e) {return e.target || e.srcElement}
-	function e_button(e) {
-	  var b = e.which
-	  if (b == null) {
-	    if (e.button & 1) { b = 1 }
-	    else if (e.button & 2) { b = 3 }
-	    else if (e.button & 4) { b = 2 }
-	  }
-	  if (mac && e.ctrlKey && b == 1) { b = 3 }
-	  return b
-	}
-
-	// Detect drag-and-drop
-	var dragAndDrop = function() {
-	  // There is *some* kind of drag-and-drop support in IE6-8, but I
-	  // couldn't get it to work yet.
-	  if (ie && ie_version < 9) { return false }
-	  var div = elt('div')
-	  return "draggable" in div || "dragDrop" in div
-	}()
-
-	var zwspSupported
-	function zeroWidthElement(measure) {
-	  if (zwspSupported == null) {
-	    var test = elt("span", "\u200b")
-	    removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]))
-	    if (measure.firstChild.offsetHeight != 0)
-	      { zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8) }
-	  }
-	  var node = zwspSupported ? elt("span", "\u200b") :
-	    elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px")
-	  node.setAttribute("cm-text", "")
-	  return node
-	}
-
-	// Feature-detect IE's crummy client rect reporting for bidi text
-	var badBidiRects
-	function hasBadBidiRects(measure) {
-	  if (badBidiRects != null) { return badBidiRects }
-	  var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA"))
-	  var r0 = range(txt, 0, 1).getBoundingClientRect()
-	  var r1 = range(txt, 1, 2).getBoundingClientRect()
-	  removeChildren(measure)
-	  if (!r0 || r0.left == r0.right) { return false } // Safari returns null in some cases (#2780)
-	  return badBidiRects = (r1.right - r0.right < 3)
-	}
-
-	// See if "".split is the broken IE version, if so, provide an
-	// alternative way to split lines.
-	var splitLinesAuto = "\n\nb".split(/\n/).length != 3 ? function (string) {
-	  var pos = 0, result = [], l = string.length
-	  while (pos <= l) {
-	    var nl = string.indexOf("\n", pos)
-	    if (nl == -1) { nl = string.length }
-	    var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl)
-	    var rt = line.indexOf("\r")
-	    if (rt != -1) {
-	      result.push(line.slice(0, rt))
-	      pos += rt + 1
-	    } else {
-	      result.push(line)
-	      pos = nl + 1
-	    }
-	  }
-	  return result
-	} : function (string) { return string.split(/\r\n?|\n/); }
-
-	var hasSelection = window.getSelection ? function (te) {
-	  try { return te.selectionStart != te.selectionEnd }
-	  catch(e) { return false }
-	} : function (te) {
-	  var range
-	  try {range = te.ownerDocument.selection.createRange()}
-	  catch(e) {}
-	  if (!range || range.parentElement() != te) { return false }
-	  return range.compareEndPoints("StartToEnd", range) != 0
-	}
-
-	var hasCopyEvent = (function () {
-	  var e = elt("div")
-	  if ("oncopy" in e) { return true }
-	  e.setAttribute("oncopy", "return;")
-	  return typeof e.oncopy == "function"
-	})()
-
-	var badZoomedRects = null
-	function hasBadZoomedRects(measure) {
-	  if (badZoomedRects != null) { return badZoomedRects }
-	  var node = removeChildrenAndAdd(measure, elt("span", "x"))
-	  var normal = node.getBoundingClientRect()
-	  var fromRange = range(node, 0, 1).getBoundingClientRect()
-	  return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1
-	}
-
-	var modes = {};
-	var mimeModes = {};
-	// Extra arguments are stored as the mode's dependencies, which is
-	// used by (legacy) mechanisms like loadmode.js to automatically
-	// load a mode. (Preferred mechanism is the require/define calls.)
-	function defineMode(name, mode) {
-	  if (arguments.length > 2)
-	    { mode.dependencies = Array.prototype.slice.call(arguments, 2) }
-	  modes[name] = mode
-	}
-
-	function defineMIME(mime, spec) {
-	  mimeModes[mime] = spec
-	}
-
-	// Given a MIME type, a {name, ...options} config object, or a name
-	// string, return a mode config object.
-	function resolveMode(spec) {
-	  if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) {
-	    spec = mimeModes[spec]
-	  } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) {
-	    var found = mimeModes[spec.name]
-	    if (typeof found == "string") { found = {name: found} }
-	    spec = createObj(found, spec)
-	    spec.name = found.name
-	  } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) {
-	    return resolveMode("application/xml")
-	  } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+json$/.test(spec)) {
-	    return resolveMode("application/json")
-	  }
-	  if (typeof spec == "string") { return {name: spec} }
-	  else { return spec || {name: "null"} }
-	}
-
-	// Given a mode spec (anything that resolveMode accepts), find and
-	// initialize an actual mode object.
-	function getMode(options, spec) {
-	  spec = resolveMode(spec)
-	  var mfactory = modes[spec.name]
-	  if (!mfactory) { return getMode(options, "text/plain") }
-	  var modeObj = mfactory(options, spec)
-	  if (modeExtensions.hasOwnProperty(spec.name)) {
-	    var exts = modeExtensions[spec.name]
-	    for (var prop in exts) {
-	      if (!exts.hasOwnProperty(prop)) { continue }
-	      if (modeObj.hasOwnProperty(prop)) { modeObj["_" + prop] = modeObj[prop] }
-	      modeObj[prop] = exts[prop]
-	    }
-	  }
-	  modeObj.name = spec.name
-	  if (spec.helperType) { modeObj.helperType = spec.helperType }
-	  if (spec.modeProps) { for (var prop$1 in spec.modeProps)
-	    { modeObj[prop$1] = spec.modeProps[prop$1] } }
-
-	  return modeObj
-	}
-
-	// This can be used to attach properties to mode objects from
-	// outside the actual mode definition.
-	var modeExtensions = {}
-	function extendMode(mode, properties) {
-	  var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {})
-	  copyObj(properties, exts)
-	}
-
-	function copyState(mode, state) {
-	  if (state === true) { return state }
-	  if (mode.copyState) { return mode.copyState(state) }
-	  var nstate = {}
-	  for (var n in state) {
-	    var val = state[n]
-	    if (val instanceof Array) { val = val.concat([]) }
-	    nstate[n] = val
-	  }
-	  return nstate
-	}
-
-	// Given a mode and a state (for that mode), find the inner mode and
-	// state at the position that the state refers to.
-	function innerMode(mode, state) {
-	  var info
-	  while (mode.innerMode) {
-	    info = mode.innerMode(state)
-	    if (!info || info.mode == mode) { break }
-	    state = info.state
-	    mode = info.mode
-	  }
-	  return info || {mode: mode, state: state}
-	}
-
-	function startState(mode, a1, a2) {
-	  return mode.startState ? mode.startState(a1, a2) : true
-	}
-
-	// STRING STREAM
-
-	// Fed to the mode parsers, provides helper functions to make
-	// parsers more succinct.
-
-	var StringStream = function(string, tabSize, lineOracle) {
-	  this.pos = this.start = 0
-	  this.string = string
-	  this.tabSize = tabSize || 8
-	  this.lastColumnPos = this.lastColumnValue = 0
-	  this.lineStart = 0
-	  this.lineOracle = lineOracle
-	};
-
-	StringStream.prototype.eol = function () {return this.pos >= this.string.length};
-	StringStream.prototype.sol = function () {return this.pos == this.lineStart};
-	StringStream.prototype.peek = function () {return this.string.charAt(this.pos) || undefined};
-	StringStream.prototype.next = function () {
-	  if (this.pos < this.string.length)
-	    { return this.string.charAt(this.pos++) }
-	};
-	StringStream.prototype.eat = function (match) {
-	  var ch = this.string.charAt(this.pos)
-	  var ok
-	  if (typeof match == "string") { ok = ch == match }
-	  else { ok = ch && (match.test ? match.test(ch) : match(ch)) }
-	  if (ok) {++this.pos; return ch}
-	};
-	StringStream.prototype.eatWhile = function (match) {
-	  var start = this.pos
-	  while (this.eat(match)){}
-	  return this.pos > start
-	};
-	StringStream.prototype.eatSpace = function () {
-	    var this$1 = this;
-
-	  var start = this.pos
-	  while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) { ++this$1.pos }
-	  return this.pos > start
-	};
-	StringStream.prototype.skipToEnd = function () {this.pos = this.string.length};
-	StringStream.prototype.skipTo = function (ch) {
-	  var found = this.string.indexOf(ch, this.pos)
-	  if (found > -1) {this.pos = found; return true}
-	};
-	StringStream.prototype.backUp = function (n) {this.pos -= n};
-	StringStream.prototype.column = function () {
-	  if (this.lastColumnPos < this.start) {
-	    this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue)
-	    this.lastColumnPos = this.start
-	  }
-	  return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)
-	};
-	StringStream.prototype.indentation = function () {
-	  return countColumn(this.string, null, this.tabSize) -
-	    (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0)
-	};
-	StringStream.prototype.match = function (pattern, consume, caseInsensitive) {
-	  if (typeof pattern == "string") {
-	    var cased = function (str) { return caseInsensitive ? str.toLowerCase() : str; }
-	    var substr = this.string.substr(this.pos, pattern.length)
-	    if (cased(substr) == cased(pattern)) {
-	      if (consume !== false) { this.pos += pattern.length }
-	      return true
-	    }
-	  } else {
-	    var match = this.string.slice(this.pos).match(pattern)
-	    if (match && match.index > 0) { return null }
-	    if (match && consume !== false) { this.pos += match[0].length }
-	    return match
-	  }
-	};
-	StringStream.prototype.current = function (){return this.string.slice(this.start, this.pos)};
-	StringStream.prototype.hideFirstChars = function (n, inner) {
-	  this.lineStart += n
-	  try { return inner() }
-	  finally { this.lineStart -= n }
-	};
-	StringStream.prototype.lookAhead = function (n) {
-	  var oracle = this.lineOracle
-	  return oracle && oracle.lookAhead(n)
-	};
-	StringStream.prototype.baseToken = function () {
-	  var oracle = this.lineOracle
-	  return oracle && oracle.baseToken(this.pos)
-	};
-
-	var SavedContext = function(state, lookAhead) {
-	  this.state = state
-	  this.lookAhead = lookAhead
-	};
-
-	var Context = function(doc, state, line, lookAhead) {
-	  this.state = state
-	  this.doc = doc
-	  this.line = line
-	  this.maxLookAhead = lookAhead || 0
-	  this.baseTokens = null
-	  this.baseTokenPos = 1
-	};
-
-	Context.prototype.lookAhead = function (n) {
-	  var line = this.doc.getLine(this.line + n)
-	  if (line != null && n > this.maxLookAhead) { this.maxLookAhead = n }
-	  return line
-	};
-
-	Context.prototype.baseToken = function (n) {
-	    var this$1 = this;
-
-	  if (!this.baseTokens) { return null }
-	  while (this.baseTokens[this.baseTokenPos] <= n)
-	    { this$1.baseTokenPos += 2 }
-	  var type = this.baseTokens[this.baseTokenPos + 1]
-	  return {type: type && type.replace(/( |^)overlay .*/, ""),
-	          size: this.baseTokens[this.baseTokenPos] - n}
-	};
-
-	Context.prototype.nextLine = function () {
-	  this.line++
-	  if (this.maxLookAhead > 0) { this.maxLookAhead-- }
-	};
-
-	Context.fromSaved = function (doc, saved, line) {
-	  if (saved instanceof SavedContext)
-	    { return new Context(doc, copyState(doc.mode, saved.state), line, saved.lookAhead) }
-	  else
-	    { return new Context(doc, copyState(doc.mode, saved), line) }
-	};
-
-	Context.prototype.save = function (copy) {
-	  var state = copy !== false ? copyState(this.doc.mode, this.state) : this.state
-	  return this.maxLookAhead > 0 ? new SavedContext(state, this.maxLookAhead) : state
-	};
-
-
-	// Compute a style array (an array starting with a mode generation
-	// -- for invalidation -- followed by pairs of end positions and
-	// style strings), which is used to highlight the tokens on the
-	// line.
-	function highlightLine(cm, line, context, forceToEnd) {
-	  // A styles array always starts with a number identifying the
-	  // mode/overlays that it is based on (for easy invalidation).
-	  var st = [cm.state.modeGen], lineClasses = {}
-	  // Compute the base array of styles
-	  runMode(cm, line.text, cm.doc.mode, context, function (end, style) { return st.push(end, style); },
-	          lineClasses, forceToEnd)
-	  var state = context.state
-
-	  // Run overlays, adjust style array.
-	  var loop = function ( o ) {
-	    context.baseTokens = st
-	    var overlay = cm.state.overlays[o], i = 1, at = 0
-	    context.state = true
-	    runMode(cm, line.text, overlay.mode, context, function (end, style) {
-	      var start = i
-	      // Ensure there's a token end at the current position, and that i points at it
-	      while (at < end) {
-	        var i_end = st[i]
-	        if (i_end > end)
-	          { st.splice(i, 1, end, st[i+1], i_end) }
-	        i += 2
-	        at = Math.min(end, i_end)
-	      }
-	      if (!style) { return }
-	      if (overlay.opaque) {
-	        st.splice(start, i - start, end, "overlay " + style)
-	        i = start + 2
-	      } else {
-	        for (; start < i; start += 2) {
-	          var cur = st[start+1]
-	          st[start+1] = (cur ? cur + " " : "") + "overlay " + style
-	        }
-	      }
-	    }, lineClasses)
-	    context.state = state
-	    context.baseTokens = null
-	    context.baseTokenPos = 1
-	  };
-
-	  for (var o = 0; o < cm.state.overlays.length; ++o) loop( o );
-
-	  return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null}
-	}
-
-	function getLineStyles(cm, line, updateFrontier) {
-	  if (!line.styles || line.styles[0] != cm.state.modeGen) {
-	    var context = getContextBefore(cm, lineNo(line))
-	    var resetState = line.text.length > cm.options.maxHighlightLength && copyState(cm.doc.mode, context.state)
-	    var result = highlightLine(cm, line, context)
-	    if (resetState) { context.state = resetState }
-	    line.stateAfter = context.save(!resetState)
-	    line.styles = result.styles
-	    if (result.classes) { line.styleClasses = result.classes }
-	    else if (line.styleClasses) { line.styleClasses = null }
-	    if (updateFrontier === cm.doc.highlightFrontier)
-	      { cm.doc.modeFrontier = Math.max(cm.doc.modeFrontier, ++cm.doc.highlightFrontier) }
-	  }
-	  return line.styles
-	}
-
-	function getContextBefore(cm, n, precise) {
-	  var doc = cm.doc, display = cm.display
-	  if (!doc.mode.startState) { return new Context(doc, true, n) }
-	  var start = findStartLine(cm, n, precise)
-	  var saved = start > doc.first && getLine(doc, start - 1).stateAfter
-	  var context = saved ? Context.fromSaved(doc, saved, start) : new Context(doc, startState(doc.mode), start)
-
-	  doc.iter(start, n, function (line) {
-	    processLine(cm, line.text, context)
-	    var pos = context.line
-	    line.stateAfter = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo ? context.save() : null
-	    context.nextLine()
-	  })
-	  if (precise) { doc.modeFrontier = context.line }
-	  return context
-	}
-
-	// Lightweight form of highlight -- proceed over this line and
-	// update state, but don't save a style array. Used for lines that
-	// aren't currently visible.
-	function processLine(cm, text, context, startAt) {
-	  var mode = cm.doc.mode
-	  var stream = new StringStream(text, cm.options.tabSize, context)
-	  stream.start = stream.pos = startAt || 0
-	  if (text == "") { callBlankLine(mode, context.state) }
-	  while (!stream.eol()) {
-	    readToken(mode, stream, context.state)
-	    stream.start = stream.pos
-	  }
-	}
-
-	function callBlankLine(mode, state) {
-	  if (mode.blankLine) { return mode.blankLine(state) }
-	  if (!mode.innerMode) { return }
-	  var inner = innerMode(mode, state)
-	  if (inner.mode.blankLine) { return inner.mode.blankLine(inner.state) }
-	}
-
-	function readToken(mode, stream, state, inner) {
-	  for (var i = 0; i < 10; i++) {
-	    if (inner) { inner[0] = innerMode(mode, state).mode }
-	    var style = mode.token(stream, state)
-	    if (stream.pos > stream.start) { return style }
-	  }
-	  throw new Error("Mode " + mode.name + " failed to advance stream.")
-	}
-
-	var Token = function(stream, type, state) {
-	  this.start = stream.start; this.end = stream.pos
-	  this.string = stream.current()
-	  this.type = type || null
-	  this.state = state
-	};
-
-	// Utility for getTokenAt and getLineTokens
-	function takeToken(cm, pos, precise, asArray) {
-	  var doc = cm.doc, mode = doc.mode, style
-	  pos = clipPos(doc, pos)
-	  var line = getLine(doc, pos.line), context = getContextBefore(cm, pos.line, precise)
-	  var stream = new StringStream(line.text, cm.options.tabSize, context), tokens
-	  if (asArray) { tokens = [] }
-	  while ((asArray || stream.pos < pos.ch) && !stream.eol()) {
-	    stream.start = stream.pos
-	    style = readToken(mode, stream, context.state)
-	    if (asArray) { tokens.push(new Token(stream, style, copyState(doc.mode, context.state))) }
-	  }
-	  return asArray ? tokens : new Token(stream, style, context.state)
-	}
-
-	function extractLineClasses(type, output) {
-	  if (type) { for (;;) {
-	    var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/)
-	    if (!lineClass) { break }
-	    type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length)
-	    var prop = lineClass[1] ? "bgClass" : "textClass"
-	    if (output[prop] == null)
-	      { output[prop] = lineClass[2] }
-	    else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(output[prop]))
-	      { output[prop] += " " + lineClass[2] }
-	  } }
-	  return type
-	}
-
-	// Run the given mode's parser over a line, calling f for each token.
-	function runMode(cm, text, mode, context, f, lineClasses, forceToEnd) {
-	  var flattenSpans = mode.flattenSpans
-	  if (flattenSpans == null) { flattenSpans = cm.options.flattenSpans }
-	  var curStart = 0, curStyle = null
-	  var stream = new StringStream(text, cm.options.tabSize, context), style
-	  var inner = cm.options.addModeClass && [null]
-	  if (text == "") { extractLineClasses(callBlankLine(mode, context.state), lineClasses) }
-	  while (!stream.eol()) {
-	    if (stream.pos > cm.options.maxHighlightLength) {
-	      flattenSpans = false
-	      if (forceToEnd) { processLine(cm, text, context, stream.pos) }
-	      stream.pos = text.length
-	      style = null
-	    } else {
-	      style = extractLineClasses(readToken(mode, stream, context.state, inner), lineClasses)
-	    }
-	    if (inner) {
-	      var mName = inner[0].name
-	      if (mName) { style = "m-" + (style ? mName + " " + style : mName) }
-	    }
-	    if (!flattenSpans || curStyle != style) {
-	      while (curStart < stream.start) {
-	        curStart = Math.min(stream.start, curStart + 5000)
-	        f(curStart, curStyle)
-	      }
-	      curStyle = style
-	    }
-	    stream.start = stream.pos
-	  }
-	  while (curStart < stream.pos) {
-	    // Webkit seems to refuse to render text nodes longer than 57444
-	    // characters, and returns inaccurate measurements in nodes
-	    // starting around 5000 chars.
-	    var pos = Math.min(stream.pos, curStart + 5000)
-	    f(pos, curStyle)
-	    curStart = pos
-	  }
-	}
-
-	// Finds the line to start with when starting a parse. Tries to
-	// find a line with a stateAfter, so that it can start with a
-	// valid state. If that fails, it returns the line with the
-	// smallest indentation, which tends to need the least context to
-	// parse correctly.
-	function findStartLine(cm, n, precise) {
-	  var minindent, minline, doc = cm.doc
-	  var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100)
-	  for (var search = n; search > lim; --search) {
-	    if (search <= doc.first) { return doc.first }
-	    var line = getLine(doc, search - 1), after = line.stateAfter
-	    if (after && (!precise || search + (after instanceof SavedContext ? after.lookAhead : 0) <= doc.modeFrontier))
-	      { return search }
-	    var indented = countColumn(line.text, null, cm.options.tabSize)
-	    if (minline == null || minindent > indented) {
-	      minline = search - 1
-	      minindent = indented
-	    }
-	  }
-	  return minline
-	}
-
-	function retreatFrontier(doc, n) {
-	  doc.modeFrontier = Math.min(doc.modeFrontier, n)
-	  if (doc.highlightFrontier < n - 10) { return }
-	  var start = doc.first
-	  for (var line = n - 1; line > start; line--) {
-	    var saved = getLine(doc, line).stateAfter
-	    // change is on 3
-	    // state on line 1 looked ahead 2 -- so saw 3
-	    // test 1 + 2 < 3 should cover this
-	    if (saved && (!(saved instanceof SavedContext) || line + saved.lookAhead < n)) {
-	      start = line + 1
-	      break
-	    }
-	  }
-	  doc.highlightFrontier = Math.min(doc.highlightFrontier, start)
-	}
-
-	// LINE DATA STRUCTURE
-
-	// Line objects. These hold state related to a line, including
-	// highlighting info (the styles array).
-	var Line = function(text, markedSpans, estimateHeight) {
-	  this.text = text
-	  attachMarkedSpans(this, markedSpans)
-	  this.height = estimateHeight ? estimateHeight(this) : 1
-	};
-
-	Line.prototype.lineNo = function () { return lineNo(this) };
-	eventMixin(Line)
-
-	// Change the content (text, markers) of a line. Automatically
-	// invalidates cached information and tries to re-estimate the
-	// line's height.
-	function updateLine(line, text, markedSpans, estimateHeight) {
-	  line.text = text
-	  if (line.stateAfter) { line.stateAfter = null }
-	  if (line.styles) { line.styles = null }
-	  if (line.order != null) { line.order = null }
-	  detachMarkedSpans(line)
-	  attachMarkedSpans(line, markedSpans)
-	  var estHeight = estimateHeight ? estimateHeight(line) : 1
-	  if (estHeight != line.height) { updateLineHeight(line, estHeight) }
-	}
-
-	// Detach a line from the document tree and its markers.
-	function cleanUpLine(line) {
-	  line.parent = null
-	  detachMarkedSpans(line)
-	}
-
-	// Convert a style as returned by a mode (either null, or a string
-	// containing one or more styles) to a CSS style. This is cached,
-	// and also looks for line-wide styles.
-	var styleToClassCache = {};
-	var styleToClassCacheWithMode = {};
-	function interpretTokenStyle(style, options) {
-	  if (!style || /^\s*$/.test(style)) { return null }
-	  var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache
-	  return cache[style] ||
-	    (cache[style] = style.replace(/\S+/g, "cm-$&"))
-	}
-
-	// Render the DOM representation of the text of a line. Also builds
-	// up a 'line map', which points at the DOM nodes that represent
-	// specific stretches of text, and is used by the measuring code.
-	// The returned object contains the DOM node, this map, and
-	// information about line-wide styles that were set by the mode.
-	function buildLineContent(cm, lineView) {
-	  // The padding-right forces the element to have a 'border', which
-	  // is needed on Webkit to be able to get line-level bounding
-	  // rectangles for it (in measureChar).
-	  var content = eltP("span", null, null, webkit ? "padding-right: .1px" : null)
-	  var builder = {pre: eltP("pre", [content], "CodeMirror-line"), content: content,
-	                 col: 0, pos: 0, cm: cm,
-	                 trailingSpace: false,
-	                 splitSpaces: (ie || webkit) && cm.getOption("lineWrapping")}
-	  lineView.measure = {}
-
-	  // Iterate over the logical lines that make up this visual line.
-	  for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {
-	    var line = i ? lineView.rest[i - 1] : lineView.line, order = (void 0)
-	    builder.pos = 0
-	    builder.addToken = buildToken
-	    // Optionally wire in some hacks into the token-rendering
-	    // algorithm, to deal with browser quirks.
-	    if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line, cm.doc.direction)))
-	      { builder.addToken = buildTokenBadBidi(builder.addToken, order) }
-	    builder.map = []
-	    var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line)
-	    insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate))
-	    if (line.styleClasses) {
-	      if (line.styleClasses.bgClass)
-	        { builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || "") }
-	      if (line.styleClasses.textClass)
-	        { builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || "") }
-	    }
-
-	    // Ensure at least a single node is present, for measuring.
-	    if (builder.map.length == 0)
-	      { builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure))) }
-
-	    // Store the map and a cache object for the current logical line
-	    if (i == 0) {
-	      lineView.measure.map = builder.map
-	      lineView.measure.cache = {}
-	    } else {
-	      ;(lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map)
-	      ;(lineView.measure.caches || (lineView.measure.caches = [])).push({})
-	    }
-	  }
-
-	  // See issue #2901
-	  if (webkit) {
-	    var last = builder.content.lastChild
-	    if (/\bcm-tab\b/.test(last.className) || (last.querySelector && last.querySelector(".cm-tab")))
-	      { builder.content.className = "cm-tab-wrap-hack" }
-	  }
-
-	  signal(cm, "renderLine", cm, lineView.line, builder.pre)
-	  if (builder.pre.className)
-	    { builder.textClass = joinClasses(builder.pre.className, builder.textClass || "") }
-
-	  return builder
-	}
-
-	function defaultSpecialCharPlaceholder(ch) {
-	  var token = elt("span", "\u2022", "cm-invalidchar")
-	  token.title = "\\u" + ch.charCodeAt(0).toString(16)
-	  token.setAttribute("aria-label", token.title)
-	  return token
-	}
-
-	// Build up the DOM representation for a single token, and add it to
-	// the line map. Takes care to render special characters separately.
-	function buildToken(builder, text, style, startStyle, endStyle, title, css) {
-	  if (!text) { return }
-	  var displayText = builder.splitSpaces ? splitSpaces(text, builder.trailingSpace) : text
-	  var special = builder.cm.state.specialChars, mustWrap = false
-	  var content
-	  if (!special.test(text)) {
-	    builder.col += text.length
-	    content = document.createTextNode(displayText)
-	    builder.map.push(builder.pos, builder.pos + text.length, content)
-	    if (ie && ie_version < 9) { mustWrap = true }
-	    builder.pos += text.length
-	  } else {
-	    content = document.createDocumentFragment()
-	    var pos = 0
-	    while (true) {
-	      special.lastIndex = pos
-	      var m = special.exec(text)
-	      var skipped = m ? m.index - pos : text.length - pos
-	      if (skipped) {
-	        var txt = document.createTextNode(displayText.slice(pos, pos + skipped))
-	        if (ie && ie_version < 9) { content.appendChild(elt("span", [txt])) }
-	        else { content.appendChild(txt) }
-	        builder.map.push(builder.pos, builder.pos + skipped, txt)
-	        builder.col += skipped
-	        builder.pos += skipped
-	      }
-	      if (!m) { break }
-	      pos += skipped + 1
-	      var txt$1 = (void 0)
-	      if (m[0] == "\t") {
-	        var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize
-	        txt$1 = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"))
-	        txt$1.setAttribute("role", "presentation")
-	        txt$1.setAttribute("cm-text", "\t")
-	        builder.col += tabWidth
-	      } else if (m[0] == "\r" || m[0] == "\n") {
-	        txt$1 = content.appendChild(elt("span", m[0] == "\r" ? "\u240d" : "\u2424", "cm-invalidchar"))
-	        txt$1.setAttribute("cm-text", m[0])
-	        builder.col += 1
-	      } else {
-	        txt$1 = builder.cm.options.specialCharPlaceholder(m[0])
-	        txt$1.setAttribute("cm-text", m[0])
-	        if (ie && ie_version < 9) { content.appendChild(elt("span", [txt$1])) }
-	        else { content.appendChild(txt$1) }
-	        builder.col += 1
-	      }
-	      builder.map.push(builder.pos, builder.pos + 1, txt$1)
-	      builder.pos++
-	    }
-	  }
-	  builder.trailingSpace = displayText.charCodeAt(text.length - 1) == 32
-	  if (style || startStyle || endStyle || mustWrap || css) {
-	    var fullStyle = style || ""
-	    if (startStyle) { fullStyle += startStyle }
-	    if (endStyle) { fullStyle += endStyle }
-	    var token = elt("span", [content], fullStyle, css)
-	    if (title) { token.title = title }
-	    return builder.content.appendChild(token)
-	  }
-	  builder.content.appendChild(content)
-	}
-
-	function splitSpaces(text, trailingBefore) {
-	  if (text.length > 1 && !/  /.test(text)) { return text }
-	  var spaceBefore = trailingBefore, result = ""
-	  for (var i = 0; i < text.length; i++) {
-	    var ch = text.charAt(i)
-	    if (ch == " " && spaceBefore && (i == text.length - 1 || text.charCodeAt(i + 1) == 32))
-	      { ch = "\u00a0" }
-	    result += ch
-	    spaceBefore = ch == " "
-	  }
-	  return result
-	}
-
-	// Work around nonsense dimensions being reported for stretches of
-	// right-to-left text.
-	function buildTokenBadBidi(inner, order) {
-	  return function (builder, text, style, startStyle, endStyle, title, css) {
-	    style = style ? style + " cm-force-border" : "cm-force-border"
-	    var start = builder.pos, end = start + text.length
-	    for (;;) {
-	      // Find the part that overlaps with the start of this text
-	      var part = (void 0)
-	      for (var i = 0; i < order.length; i++) {
-	        part = order[i]
-	        if (part.to > start && part.from <= start) { break }
-	      }
-	      if (part.to >= end) { return inner(builder, text, style, startStyle, endStyle, title, css) }
-	      inner(builder, text.slice(0, part.to - start), style, startStyle, null, title, css)
-	      startStyle = null
-	      text = text.slice(part.to - start)
-	      start = part.to
-	    }
-	  }
-	}
-
-	function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
-	  var widget = !ignoreWidget && marker.widgetNode
-	  if (widget) { builder.map.push(builder.pos, builder.pos + size, widget) }
-	  if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) {
-	    if (!widget)
-	      { widget = builder.content.appendChild(document.createElement("span")) }
-	    widget.setAttribute("cm-marker", marker.id)
-	  }
-	  if (widget) {
-	    builder.cm.display.input.setUneditable(widget)
-	    builder.content.appendChild(widget)
-	  }
-	  builder.pos += size
-	  builder.trailingSpace = false
-	}
-
-	// Outputs a number of spans to make up a line, taking highlighting
-	// and marked text into account.
-	function insertLineContent(line, builder, styles) {
-	  var spans = line.markedSpans, allText = line.text, at = 0
-	  if (!spans) {
-	    for (var i$1 = 1; i$1 < styles.length; i$1+=2)
-	      { builder.addToken(builder, allText.slice(at, at = styles[i$1]), interpretTokenStyle(styles[i$1+1], builder.cm.options)) }
-	    return
-	  }
-
-	  var len = allText.length, pos = 0, i = 1, text = "", style, css
-	  var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed
-	  for (;;) {
-	    if (nextChange == pos) { // Update current marker set
-	      spanStyle = spanEndStyle = spanStartStyle = title = css = ""
-	      collapsed = null; nextChange = Infinity
-	      var foundBookmarks = [], endStyles = (void 0)
-	      for (var j = 0; j < spans.length; ++j) {
-	        var sp = spans[j], m = sp.marker
-	        if (m.type == "bookmark" && sp.from == pos && m.widgetNode) {
-	          foundBookmarks.push(m)
-	        } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) {
-	          if (sp.to != null && sp.to != pos && nextChange > sp.to) {
-	            nextChange = sp.to
-	            spanEndStyle = ""
-	          }
-	          if (m.className) { spanStyle += " " + m.className }
-	          if (m.css) { css = (css ? css + ";" : "") + m.css }
-	          if (m.startStyle && sp.from == pos) { spanStartStyle += " " + m.startStyle }
-	          if (m.endStyle && sp.to == nextChange) { (endStyles || (endStyles = [])).push(m.endStyle, sp.to) }
-	          if (m.title && !title) { title = m.title }
-	          if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0))
-	            { collapsed = sp }
-	        } else if (sp.from > pos && nextChange > sp.from) {
-	          nextChange = sp.from
-	        }
-	      }
-	      if (endStyles) { for (var j$1 = 0; j$1 < endStyles.length; j$1 += 2)
-	        { if (endStyles[j$1 + 1] == nextChange) { spanEndStyle += " " + endStyles[j$1] } } }
-
-	      if (!collapsed || collapsed.from == pos) { for (var j$2 = 0; j$2 < foundBookmarks.length; ++j$2)
-	        { buildCollapsedSpan(builder, 0, foundBookmarks[j$2]) } }
-	      if (collapsed && (collapsed.from || 0) == pos) {
-	        buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,
-	                           collapsed.marker, collapsed.from == null)
-	        if (collapsed.to == null) { return }
-	        if (collapsed.to == pos) { collapsed = false }
-	      }
-	    }
-	    if (pos >= len) { break }
-
-	    var upto = Math.min(len, nextChange)
-	    while (true) {
-	      if (text) {
-	        var end = pos + text.length
-	        if (!collapsed) {
-	          var tokenText = end > upto ? text.slice(0, upto - pos) : text
-	          builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,
-	                           spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title, css)
-	        }
-	        if (end >= upto) {text = text.slice(upto - pos); pos = upto; break}
-	        pos = end
-	        spanStartStyle = ""
-	      }
-	      text = allText.slice(at, at = styles[i++])
-	      style = interpretTokenStyle(styles[i++], builder.cm.options)
-	    }
-	  }
-	}
-
-
-	// These objects are used to represent the visible (currently drawn)
-	// part of the document. A LineView may correspond to multiple
-	// logical lines, if those are connected by collapsed ranges.
-	function LineView(doc, line, lineN) {
-	  // The starting line
-	  this.line = line
-	  // Continuing lines, if any
-	  this.rest = visualLineContinued(line)
-	  // Number of logical lines in this visual line
-	  this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1
-	  this.node = this.text = null
-	  this.hidden = lineIsHidden(doc, line)
-	}
-
-	// Create a range of LineView objects for the given lines.
-	function buildViewArray(cm, from, to) {
-	  var array = [], nextPos
-	  for (var pos = from; pos < to; pos = nextPos) {
-	    var view = new LineView(cm.doc, getLine(cm.doc, pos), pos)
-	    nextPos = pos + view.size
-	    array.push(view)
-	  }
-	  return array
-	}
-
-	var operationGroup = null
-
-	function pushOperation(op) {
-	  if (operationGroup) {
-	    operationGroup.ops.push(op)
-	  } else {
-	    op.ownsGroup = operationGroup = {
-	      ops: [op],
-	      delayedCallbacks: []
-	    }
-	  }
-	}
-
-	function fireCallbacksForOps(group) {
-	  // Calls delayed callbacks and cursorActivity handlers until no
-	  // new ones appear
-	  var callbacks = group.delayedCallbacks, i = 0
-	  do {
-	    for (; i < callbacks.length; i++)
-	      { callbacks[i].call(null) }
-	    for (var j = 0; j < group.ops.length; j++) {
-	      var op = group.ops[j]
-	      if (op.cursorActivityHandlers)
-	        { while (op.cursorActivityCalled < op.cursorActivityHandlers.length)
-	          { op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm) } }
-	    }
-	  } while (i < callbacks.length)
-	}
-
-	function finishOperation(op, endCb) {
-	  var group = op.ownsGroup
-	  if (!group) { return }
-
-	  try { fireCallbacksForOps(group) }
-	  finally {
-	    operationGroup = null
-	    endCb(group)
-	  }
-	}
-
-	var orphanDelayedCallbacks = null
-
-	// Often, we want to signal events at a point where we are in the
-	// middle of some work, but don't want the handler to start calling
-	// other methods on the editor, which might be in an inconsistent
-	// state or simply not expect any other events to happen.
-	// signalLater looks whether there are any handlers, and schedules
-	// them to be executed when the last operation ends, or, if no
-	// operation is active, when a timeout fires.
-	function signalLater(emitter, type /*, values...*/) {
-	  var arr = getHandlers(emitter, type)
-	  if (!arr.length) { return }
-	  var args = Array.prototype.slice.call(arguments, 2), list
-	  if (operationGroup) {
-	    list = operationGroup.delayedCallbacks
-	  } else if (orphanDelayedCallbacks) {
-	    list = orphanDelayedCallbacks
-	  } else {
-	    list = orphanDelayedCallbacks = []
-	    setTimeout(fireOrphanDelayed, 0)
-	  }
-	  var loop = function ( i ) {
-	    list.push(function () { return arr[i].apply(null, args); })
-	  };
-
-	  for (var i = 0; i < arr.length; ++i)
-	    loop( i );
-	}
-
-	function fireOrphanDelayed() {
-	  var delayed = orphanDelayedCallbacks
-	  orphanDelayedCallbacks = null
-	  for (var i = 0; i < delayed.length; ++i) { delayed[i]() }
-	}
-
-	// When an aspect of a line changes, a string is added to
-	// lineView.changes. This updates the relevant part of the line's
-	// DOM structure.
-	function updateLineForChanges(cm, lineView, lineN, dims) {
-	  for (var j = 0; j < lineView.changes.length; j++) {
-	    var type = lineView.changes[j]
-	    if (type == "text") { updateLineText(cm, lineView) }
-	    else if (type == "gutter") { updateLineGutter(cm, lineView, lineN, dims) }
-	    else if (type == "class") { updateLineClasses(cm, lineView) }
-	    else if (type == "widget") { updateLineWidgets(cm, lineView, dims) }
-	  }
-	  lineView.changes = null
-	}
-
-	// Lines with gutter elements, widgets or a background class need to
-	// be wrapped, and have the extra elements added to the wrapper div
-	function ensureLineWrapped(lineView) {
-	  if (lineView.node == lineView.text) {
-	    lineView.node = elt("div", null, null, "position: relative")
-	    if (lineView.text.parentNode)
-	      { lineView.text.parentNode.replaceChild(lineView.node, lineView.text) }
-	    lineView.node.appendChild(lineView.text)
-	    if (ie && ie_version < 8) { lineView.node.style.zIndex = 2 }
-	  }
-	  return lineView.node
-	}
-
-	function updateLineBackground(cm, lineView) {
-	  var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass
-	  if (cls) { cls += " CodeMirror-linebackground" }
-	  if (lineView.background) {
-	    if (cls) { lineView.background.className = cls }
-	    else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null }
-	  } else if (cls) {
-	    var wrap = ensureLineWrapped(lineView)
-	    lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild)
-	    cm.display.input.setUneditable(lineView.background)
-	  }
-	}
-
-	// Wrapper around buildLineContent which will reuse the structure
-	// in display.externalMeasured when possible.
-	function getLineContent(cm, lineView) {
-	  var ext = cm.display.externalMeasured
-	  if (ext && ext.line == lineView.line) {
-	    cm.display.externalMeasured = null
-	    lineView.measure = ext.measure
-	    return ext.built
-	  }
-	  return buildLineContent(cm, lineView)
-	}
-
-	// Redraw the line's text. Interacts with the background and text
-	// classes because the mode may output tokens that influence these
-	// classes.
-	function updateLineText(cm, lineView) {
-	  var cls = lineView.text.className
-	  var built = getLineContent(cm, lineView)
-	  if (lineView.text == lineView.node) { lineView.node = built.pre }
-	  lineView.text.parentNode.replaceChild(built.pre, lineView.text)
-	  lineView.text = built.pre
-	  if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {
-	    lineView.bgClass = built.bgClass
-	    lineView.textClass = built.textClass
-	    updateLineClasses(cm, lineView)
-	  } else if (cls) {
-	    lineView.text.className = cls
-	  }
-	}
-
-	function updateLineClasses(cm, lineView) {
-	  updateLineBackground(cm, lineView)
-	  if (lineView.line.wrapClass)
-	    { ensureLineWrapped(lineView).className = lineView.line.wrapClass }
-	  else if (lineView.node != lineView.text)
-	    { lineView.node.className = "" }
-	  var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass
-	  lineView.text.className = textClass || ""
-	}
-
-	function updateLineGutter(cm, lineView, lineN, dims) {
-	  if (lineView.gutter) {
-	    lineView.node.removeChild(lineView.gutter)
-	    lineView.gutter = null
-	  }
-	  if (lineView.gutterBackground) {
-	    lineView.node.removeChild(lineView.gutterBackground)
-	    lineView.gutterBackground = null
-	  }
-	  if (lineView.line.gutterClass) {
-	    var wrap = ensureLineWrapped(lineView)
-	    lineView.gutterBackground = elt("div", null, "CodeMirror-gutter-background " + lineView.line.gutterClass,
-	                                    ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px; width: " + (dims.gutterTotalWidth) + "px"))
-	    cm.display.input.setUneditable(lineView.gutterBackground)
-	    wrap.insertBefore(lineView.gutterBackground, lineView.text)
-	  }
-	  var markers = lineView.line.gutterMarkers
-	  if (cm.options.lineNumbers || markers) {
-	    var wrap$1 = ensureLineWrapped(lineView)
-	    var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"))
-	    cm.display.input.setUneditable(gutterWrap)
-	    wrap$1.insertBefore(gutterWrap, lineView.text)
-	    if (lineView.line.gutterClass)
-	      { gutterWrap.className += " " + lineView.line.gutterClass }
-	    if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
-	      { lineView.lineNumber = gutterWrap.appendChild(
-	        elt("div", lineNumberFor(cm.options, lineN),
-	            "CodeMirror-linenumber CodeMirror-gutter-elt",
-	            ("left: " + (dims.gutterLeft["CodeMirror-linenumbers"]) + "px; width: " + (cm.display.lineNumInnerWidth) + "px"))) }
-	    if (markers) { for (var k = 0; k < cm.options.gutters.length; ++k) {
-	      var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id]
-	      if (found)
-	        { gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt",
-	                                   ("left: " + (dims.gutterLeft[id]) + "px; width: " + (dims.gutterWidth[id]) + "px"))) }
-	    } }
-	  }
-	}
-
-	function updateLineWidgets(cm, lineView, dims) {
-	  if (lineView.alignable) { lineView.alignable = null }
-	  for (var node = lineView.node.firstChild, next = (void 0); node; node = next) {
-	    next = node.nextSibling
-	    if (node.className == "CodeMirror-linewidget")
-	      { lineView.node.removeChild(node) }
-	  }
-	  insertLineWidgets(cm, lineView, dims)
-	}
-
-	// Build a line's DOM representation from scratch
-	function buildLineElement(cm, lineView, lineN, dims) {
-	  var built = getLineContent(cm, lineView)
-	  lineView.text = lineView.node = built.pre
-	  if (built.bgClass) { lineView.bgClass = built.bgClass }
-	  if (built.textClass) { lineView.textClass = built.textClass }
-
-	  updateLineClasses(cm, lineView)
-	  updateLineGutter(cm, lineView, lineN, dims)
-	  insertLineWidgets(cm, lineView, dims)
-	  return lineView.node
-	}
-
-	// A lineView may contain multiple logical lines (when merged by
-	// collapsed spans). The widgets for all of them need to be drawn.
-	function insertLineWidgets(cm, lineView, dims) {
-	  insertLineWidgetsFor(cm, lineView.line, lineView, dims, true)
-	  if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++)
-	    { insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false) } }
-	}
-
-	function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) {
-	  if (!line.widgets) { return }
-	  var wrap = ensureLineWrapped(lineView)
-	  for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
-	    var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget")
-	    if (!widget.handleMouseEvents) { node.setAttribute("cm-ignore-events", "true") }
-	    positionLineWidget(widget, node, lineView, dims)
-	    cm.display.input.setUneditable(node)
-	    if (allowAbove && widget.above)
-	      { wrap.insertBefore(node, lineView.gutter || lineView.text) }
-	    else
-	      { wrap.appendChild(node) }
-	    signalLater(widget, "redraw")
-	  }
-	}
-
-	function positionLineWidget(widget, node, lineView, dims) {
-	  if (widget.noHScroll) {
-	    ;(lineView.alignable || (lineView.alignable = [])).push(node)
-	    var width = dims.wrapperWidth
-	    node.style.left = dims.fixedPos + "px"
-	    if (!widget.coverGutter) {
-	      width -= dims.gutterTotalWidth
-	      node.style.paddingLeft = dims.gutterTotalWidth + "px"
-	    }
-	    node.style.width = width + "px"
-	  }
-	  if (widget.coverGutter) {
-	    node.style.zIndex = 5
-	    node.style.position = "relative"
-	    if (!widget.noHScroll) { node.style.marginLeft = -dims.gutterTotalWidth + "px" }
-	  }
-	}
-
-	function widgetHeight(widget) {
-	  if (widget.height != null) { return widget.height }
-	  var cm = widget.doc.cm
-	  if (!cm) { return 0 }
-	  if (!contains(document.body, widget.node)) {
-	    var parentStyle = "position: relative;"
-	    if (widget.coverGutter)
-	      { parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;" }
-	    if (widget.noHScroll)
-	      { parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;" }
-	    removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle))
-	  }
-	  return widget.height = widget.node.parentNode.offsetHeight
-	}
-
-	// Return true when the given mouse event happened in a widget
-	function eventInWidget(display, e) {
-	  for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
-	    if (!n || (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") ||
-	        (n.parentNode == display.sizer && n != display.mover))
-	      { return true }
-	  }
-	}
-
-	// POSITION MEASUREMENT
-
-	function paddingTop(display) {return display.lineSpace.offsetTop}
-	function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight}
-	function paddingH(display) {
-	  if (display.cachedPaddingH) { return display.cachedPaddingH }
-	  var e = removeChildrenAndAdd(display.measure, elt("pre", "x"))
-	  var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle
-	  var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)}
-	  if (!isNaN(data.left) && !isNaN(data.right)) { display.cachedPaddingH = data }
-	  return data
-	}
-
-	function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth }
-	function displayWidth(cm) {
-	  return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth
-	}
-	function displayHeight(cm) {
-	  return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight
-	}
-
-	// Ensure the lineView.wrapping.heights array is populated. This is
-	// an array of bottom offsets for the lines that make up a drawn
-	// line. When lineWrapping is on, there might be more than one
-	// height.
-	function ensureLineHeights(cm, lineView, rect) {
-	  var wrapping = cm.options.lineWrapping
-	  var curWidth = wrapping && displayWidth(cm)
-	  if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {
-	    var heights = lineView.measure.heights = []
-	    if (wrapping) {
-	      lineView.measure.width = curWidth
-	      var rects = lineView.text.firstChild.getClientRects()
-	      for (var i = 0; i < rects.length - 1; i++) {
-	        var cur = rects[i], next = rects[i + 1]
-	        if (Math.abs(cur.bottom - next.bottom) > 2)
-	          { heights.push((cur.bottom + next.top) / 2 - rect.top) }
-	      }
-	    }
-	    heights.push(rect.bottom - rect.top)
-	  }
-	}
-
-	// Find a line map (mapping character offsets to text nodes) and a
-	// measurement cache for the given line number. (A line view might
-	// contain multiple lines when collapsed ranges are present.)
-	function mapFromLineView(lineView, line, lineN) {
-	  if (lineView.line == line)
-	    { return {map: lineView.measure.map, cache: lineView.measure.cache} }
-	  for (var i = 0; i < lineView.rest.length; i++)
-	    { if (lineView.rest[i] == line)
-	      { return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]} } }
-	  for (var i$1 = 0; i$1 < lineView.rest.length; i$1++)
-	    { if (lineNo(lineView.rest[i$1]) > lineN)
-	      { return {map: lineView.measure.maps[i$1], cache: lineView.measure.caches[i$1], before: true} } }
-	}
-
-	// Render a line into the hidden node display.externalMeasured. Used
-	// when measurement is needed for a line that's not in the viewport.
-	function updateExternalMeasurement(cm, line) {
-	  line = visualLine(line)
-	  var lineN = lineNo(line)
-	  var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN)
-	  view.lineN = lineN
-	  var built = view.built = buildLineContent(cm, view)
-	  view.text = built.pre
-	  removeChildrenAndAdd(cm.display.lineMeasure, built.pre)
-	  return view
-	}
-
-	// Get a {top, bottom, left, right} box (in line-local coordinates)
-	// for a given character.
-	function measureChar(cm, line, ch, bias) {
-	  return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias)
-	}
-
-	// Find a line view that corresponds to the given line number.
-	function findViewForLine(cm, lineN) {
-	  if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)
-	    { return cm.display.view[findViewIndex(cm, lineN)] }
-	  var ext = cm.display.externalMeasured
-	  if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)
-	    { return ext }
-	}
-
-	// Measurement can be split in two steps, the set-up work that
-	// applies to the whole line, and the measurement of the actual
-	// character. Functions like coordsChar, that need to do a lot of
-	// measurements in a row, can thus ensure that the set-up work is
-	// only done once.
-	function prepareMeasureForLine(cm, line) {
-	  var lineN = lineNo(line)
-	  var view = findViewForLine(cm, lineN)
-	  if (view && !view.text) {
-	    view = null
-	  } else if (view && view.changes) {
-	    updateLineForChanges(cm, view, lineN, getDimensions(cm))
-	    cm.curOp.forceUpdate = true
-	  }
-	  if (!view)
-	    { view = updateExternalMeasurement(cm, line) }
-
-	  var info = mapFromLineView(view, line, lineN)
-	  return {
-	    line: line, view: view, rect: null,
-	    map: info.map, cache: info.cache, before: info.before,
-	    hasHeights: false
-	  }
-	}
-
-	// Given a prepared measurement object, measures the position of an
-	// actual character (or fetches it from the cache).
-	function measureCharPrepared(cm, prepared, ch, bias, varHeight) {
-	  if (prepared.before) { ch = -1 }
-	  var key = ch + (bias || ""), found
-	  if (prepared.cache.hasOwnProperty(key)) {
-	    found = prepared.cache[key]
-	  } else {
-	    if (!prepared.rect)
-	      { prepared.rect = prepared.view.text.getBoundingClientRect() }
-	    if (!prepared.hasHeights) {
-	      ensureLineHeights(cm, prepared.view, prepared.rect)
-	      prepared.hasHeights = true
-	    }
-	    found = measureCharInner(cm, prepared, ch, bias)
-	    if (!found.bogus) { prepared.cache[key] = found }
-	  }
-	  return {left: found.left, right: found.right,
-	          top: varHeight ? found.rtop : found.top,
-	          bottom: varHeight ? found.rbottom : found.bottom}
-	}
-
-	var nullRect = {left: 0, right: 0, top: 0, bottom: 0}
-
-	function nodeAndOffsetInLineMap(map, ch, bias) {
-	  var node, start, end, collapse, mStart, mEnd
-	  // First, search the line map for the text node corresponding to,
-	  // or closest to, the target character.
-	  for (var i = 0; i < map.length; i += 3) {
-	    mStart = map[i]
-	    mEnd = map[i + 1]
-	    if (ch < mStart) {
-	      start = 0; end = 1
-	      collapse = "left"
-	    } else if (ch < mEnd) {
-	      start = ch - mStart
-	      end = start + 1
-	    } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) {
-	      end = mEnd - mStart
-	      start = end - 1
-	      if (ch >= mEnd) { collapse = "right" }
-	    }
-	    if (start != null) {
-	      node = map[i + 2]
-	      if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right"))
-	        { collapse = bias }
-	      if (bias == "left" && start == 0)
-	        { while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {
-	          node = map[(i -= 3) + 2]
-	          collapse = "left"
-	        } }
-	      if (bias == "right" && start == mEnd - mStart)
-	        { while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {
-	          node = map[(i += 3) + 2]
-	          collapse = "right"
-	        } }
-	      break
-	    }
-	  }
-	  return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd}
-	}
-
-	function getUsefulRect(rects, bias) {
-	  var rect = nullRect
-	  if (bias == "left") { for (var i = 0; i < rects.length; i++) {
-	    if ((rect = rects[i]).left != rect.right) { break }
-	  } } else { for (var i$1 = rects.length - 1; i$1 >= 0; i$1--) {
-	    if ((rect = rects[i$1]).left != rect.right) { break }
-	  } }
-	  return rect
-	}
-
-	function measureCharInner(cm, prepared, ch, bias) {
-	  var place = nodeAndOffsetInLineMap(prepared.map, ch, bias)
-	  var node = place.node, start = place.start, end = place.end, collapse = place.collapse
-
-	  var rect
-	  if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.
-	    for (var i$1 = 0; i$1 < 4; i$1++) { // Retry a maximum of 4 times when nonsense rectangles are returned
-	      while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) { --start }
-	      while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) { ++end }
-	      if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart)
-	        { rect = node.parentNode.getBoundingClientRect() }
-	      else
-	        { rect = getUsefulRect(range(node, start, end).getClientRects(), bias) }
-	      if (rect.left || rect.right || start == 0) { break }
-	      end = start
-	      start = start - 1
-	      collapse = "right"
-	    }
-	    if (ie && ie_version < 11) { rect = maybeUpdateRectForZooming(cm.display.measure, rect) }
-	  } else { // If it is a widget, simply get the box for the whole widget.
-	    if (start > 0) { collapse = bias = "right" }
-	    var rects
-	    if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)
-	      { rect = rects[bias == "right" ? rects.length - 1 : 0] }
-	    else
-	      { rect = node.getBoundingClientRect() }
-	  }
-	  if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) {
-	    var rSpan = node.parentNode.getClientRects()[0]
-	    if (rSpan)
-	      { rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom} }
-	    else
-	      { rect = nullRect }
-	  }
-
-	  var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top
-	  var mid = (rtop + rbot) / 2
-	  var heights = prepared.view.measure.heights
-	  var i = 0
-	  for (; i < heights.length - 1; i++)
-	    { if (mid < heights[i]) { break } }
-	  var top = i ? heights[i - 1] : 0, bot = heights[i]
-	  var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left,
-	                right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left,
-	                top: top, bottom: bot}
-	  if (!rect.left && !rect.right) { result.bogus = true }
-	  if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot }
-
-	  return result
-	}
-
-	// Work around problem with bounding client rects on ranges being
-	// returned incorrectly when zoomed on IE10 and below.
-	function maybeUpdateRectForZooming(measure, rect) {
-	  if (!window.screen || screen.logicalXDPI == null ||
-	      screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure))
-	    { return rect }
-	  var scaleX = screen.logicalXDPI / screen.deviceXDPI
-	  var scaleY = screen.logicalYDPI / screen.deviceYDPI
-	  return {left: rect.left * scaleX, right: rect.right * scaleX,
-	          top: rect.top * scaleY, bottom: rect.bottom * scaleY}
-	}
-
-	function clearLineMeasurementCacheFor(lineView) {
-	  if (lineView.measure) {
-	    lineView.measure.cache = {}
-	    lineView.measure.heights = null
-	    if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++)
-	      { lineView.measure.caches[i] = {} } }
-	  }
-	}
-
-	function clearLineMeasurementCache(cm) {
-	  cm.display.externalMeasure = null
-	  removeChildren(cm.display.lineMeasure)
-	  for (var i = 0; i < cm.display.view.length; i++)
-	    { clearLineMeasurementCacheFor(cm.display.view[i]) }
-	}
-
-	function clearCaches(cm) {
-	  clearLineMeasurementCache(cm)
-	  cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null
-	  if (!cm.options.lineWrapping) { cm.display.maxLineChanged = true }
-	  cm.display.lineNumChars = null
-	}
-
-	function pageScrollX() {
-	  // Work around https://bugs.chromium.org/p/chromium/issues/detail?id=489206
-	  // which causes page_Offset and bounding client rects to use
-	  // different reference viewports and invalidate our calculations.
-	  if (chrome && android) { return -(document.body.getBoundingClientRect().left - parseInt(getComputedStyle(document.body).marginLeft)) }
-	  return window.pageXOffset || (document.documentElement || document.body).scrollLeft
-	}
-	function pageScrollY() {
-	  if (chrome && android) { return -(document.body.getBoundingClientRect().top - parseInt(getComputedStyle(document.body).marginTop)) }
-	  return window.pageYOffset || (document.documentElement || document.body).scrollTop
-	}
-
-	function widgetTopHeight(lineObj) {
-	  var height = 0
-	  if (lineObj.widgets) { for (var i = 0; i < lineObj.widgets.length; ++i) { if (lineObj.widgets[i].above)
-	    { height += widgetHeight(lineObj.widgets[i]) } } }
-	  return height
-	}
-
-	// Converts a {top, bottom, left, right} box from line-local
-	// coordinates into another coordinate system. Context may be one of
-	// "line", "div" (display.lineDiv), "local"./null (editor), "window",
-	// or "page".
-	function intoCoordSystem(cm, lineObj, rect, context, includeWidgets) {
-	  if (!includeWidgets) {
-	    var height = widgetTopHeight(lineObj)
-	    rect.top += height; rect.bottom += height
-	  }
-	  if (context == "line") { return rect }
-	  if (!context) { context = "local" }
-	  var yOff = heightAtLine(lineObj)
-	  if (context == "local") { yOff += paddingTop(cm.display) }
-	  else { yOff -= cm.display.viewOffset }
-	  if (context == "page" || context == "window") {
-	    var lOff = cm.display.lineSpace.getBoundingClientRect()
-	    yOff += lOff.top + (context == "window" ? 0 : pageScrollY())
-	    var xOff = lOff.left + (context == "window" ? 0 : pageScrollX())
-	    rect.left += xOff; rect.right += xOff
-	  }
-	  rect.top += yOff; rect.bottom += yOff
-	  return rect
-	}
-
-	// Coverts a box from "div" coords to another coordinate system.
-	// Context may be "window", "page", "div", or "local"./null.
-	function fromCoordSystem(cm, coords, context) {
-	  if (context == "div") { return coords }
-	  var left = coords.left, top = coords.top
-	  // First move into "page" coordinate system
-	  if (context == "page") {
-	    left -= pageScrollX()
-	    top -= pageScrollY()
-	  } else if (context == "local" || !context) {
-	    var localBox = cm.display.sizer.getBoundingClientRect()
-	    left += localBox.left
-	    top += localBox.top
-	  }
-
-	  var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect()
-	  return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top}
-	}
-
-	function charCoords(cm, pos, context, lineObj, bias) {
-	  if (!lineObj) { lineObj = getLine(cm.doc, pos.line) }
-	  return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context)
-	}
-
-	// Returns a box for a given cursor position, which may have an
-	// 'other' property containing the position of the secondary cursor
-	// on a bidi boundary.
-	// A cursor Pos(line, char, "before") is on the same visual line as `char - 1`
-	// and after `char - 1` in writing order of `char - 1`
-	// A cursor Pos(line, char, "after") is on the same visual line as `char`
-	// and before `char` in writing order of `char`
-	// Examples (upper-case letters are RTL, lower-case are LTR):
-	//     Pos(0, 1, ...)
-	//     before   after
-	// ab     a|b     a|b
-	// aB     a|B     aB|
-	// Ab     |Ab     A|b
-	// AB     B|A     B|A
-	// Every position after the last character on a line is considered to stick
-	// to the last character on the line.
-	function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) {
-	  lineObj = lineObj || getLine(cm.doc, pos.line)
-	  if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj) }
-	  function get(ch, right) {
-	    var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight)
-	    if (right) { m.left = m.right; } else { m.right = m.left }
-	    return intoCoordSystem(cm, lineObj, m, context)
-	  }
-	  var order = getOrder(lineObj, cm.doc.direction), ch = pos.ch, sticky = pos.sticky
-	  if (ch >= lineObj.text.length) {
-	    ch = lineObj.text.length
-	    sticky = "before"
-	  } else if (ch <= 0) {
-	    ch = 0
-	    sticky = "after"
-	  }
-	  if (!order) { return get(sticky == "before" ? ch - 1 : ch, sticky == "before") }
-
-	  function getBidi(ch, partPos, invert) {
-	    var part = order[partPos], right = part.level == 1
-	    return get(invert ? ch - 1 : ch, right != invert)
-	  }
-	  var partPos = getBidiPartAt(order, ch, sticky)
-	  var other = bidiOther
-	  var val = getBidi(ch, partPos, sticky == "before")
-	  if (other != null) { val.other = getBidi(ch, other, sticky != "before") }
-	  return val
-	}
-
-	// Used to cheaply estimate the coordinates for a position. Used for
-	// intermediate scroll updates.
-	function estimateCoords(cm, pos) {
-	  var left = 0
-	  pos = clipPos(cm.doc, pos)
-	  if (!cm.options.lineWrapping) { left = charWidth(cm.display) * pos.ch }
-	  var lineObj = getLine(cm.doc, pos.line)
-	  var top = heightAtLine(lineObj) + paddingTop(cm.display)
-	  return {left: left, right: left, top: top, bottom: top + lineObj.height}
-	}
-
-	// Positions returned by coordsChar contain some extra information.
-	// xRel is the relative x position of the input coordinates compared
-	// to the found position (so xRel > 0 means the coordinates are to
-	// the right of the character position, for example). When outside
-	// is true, that means the coordinates lie outside the line's
-	// vertical range.
-	function PosWithInfo(line, ch, sticky, outside, xRel) {
-	  var pos = Pos(line, ch, sticky)
-	  pos.xRel = xRel
-	  if (outside) { pos.outside = true }
-	  return pos
-	}
-
-	// Compute the character position closest to the given coordinates.
-	// Input must be lineSpace-local ("div" coordinate system).
-	function coordsChar(cm, x, y) {
-	  var doc = cm.doc
-	  y += cm.display.viewOffset
-	  if (y < 0) { return PosWithInfo(doc.first, 0, null, true, -1) }
-	  var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1
-	  if (lineN > last)
-	    { return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, null, true, 1) }
-	  if (x < 0) { x = 0 }
-
-	  var lineObj = getLine(doc, lineN)
-	  for (;;) {
-	    var found = coordsCharInner(cm, lineObj, lineN, x, y)
-	    var merged = collapsedSpanAtEnd(lineObj)
-	    var mergedPos = merged && merged.find(0, true)
-	    if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0))
-	      { lineN = lineNo(lineObj = mergedPos.to.line) }
-	    else
-	      { return found }
-	  }
-	}
-
-	function wrappedLineExtent(cm, lineObj, preparedMeasure, y) {
-	  y -= widgetTopHeight(lineObj)
-	  var end = lineObj.text.length
-	  var begin = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch - 1).bottom <= y; }, end, 0)
-	  end = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch).top > y; }, begin, end)
-	  return {begin: begin, end: end}
-	}
-
-	function wrappedLineExtentChar(cm, lineObj, preparedMeasure, target) {
-	  if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj) }
-	  var targetTop = intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, target), "line").top
-	  return wrappedLineExtent(cm, lineObj, preparedMeasure, targetTop)
-	}
-
-	// Returns true if the given side of a box is after the given
-	// coordinates, in top-to-bottom, left-to-right order.
-	function boxIsAfter(box, x, y, left) {
-	  return box.bottom <= y ? false : box.top > y ? true : (left ? box.left : box.right) > x
-	}
-
-	function coordsCharInner(cm, lineObj, lineNo, x, y) {
-	  // Move y into line-local coordinate space
-	  y -= heightAtLine(lineObj)
-	  var preparedMeasure = prepareMeasureForLine(cm, lineObj)
-	  // When directly calling `measureCharPrepared`, we have to adjust
-	  // for the widgets at this line.
-	  var widgetHeight = widgetTopHeight(lineObj)
-	  var begin = 0, end = lineObj.text.length, ltr = true
-
-	  var order = getOrder(lineObj, cm.doc.direction)
-	  // If the line isn't plain left-to-right text, first figure out
-	  // which bidi section the coordinates fall into.
-	  if (order) {
-	    var part = (cm.options.lineWrapping ? coordsBidiPartWrapped : coordsBidiPart)
-	                 (cm, lineObj, lineNo, preparedMeasure, order, x, y)
-	    ltr = part.level != 1
-	    // The awkward -1 offsets are needed because findFirst (called
-	    // on these below) will treat its first bound as inclusive,
-	    // second as exclusive, but we want to actually address the
-	    // characters in the part's range
-	    begin = ltr ? part.from : part.to - 1
-	    end = ltr ? part.to : part.from - 1
-	  }
-
-	  // A binary search to find the first character whose bounding box
-	  // starts after the coordinates. If we run across any whose box wrap
-	  // the coordinates, store that.
-	  var chAround = null, boxAround = null
-	  var ch = findFirst(function (ch) {
-	    var box = measureCharPrepared(cm, preparedMeasure, ch)
-	    box.top += widgetHeight; box.bottom += widgetHeight
-	    if (!boxIsAfter(box, x, y, false)) { return false }
-	    if (box.top <= y && box.left <= x) {
-	      chAround = ch
-	      boxAround = box
-	    }
-	    return true
-	  }, begin, end)
-
-	  var baseX, sticky, outside = false
-	  // If a box around the coordinates was found, use that
-	  if (boxAround) {
-	    // Distinguish coordinates nearer to the left or right side of the box
-	    var atLeft = x - boxAround.left < boxAround.right - x, atStart = atLeft == ltr
-	    ch = chAround + (atStart ? 0 : 1)
-	    sticky = atStart ? "after" : "before"
-	    baseX = atLeft ? boxAround.left : boxAround.right
-	  } else {
-	    // (Adjust for extended bound, if necessary.)
-	    if (!ltr && (ch == end || ch == begin)) { ch++ }
-	    // To determine which side to associate with, get the box to the
-	    // left of the character and compare it's vertical position to the
-	    // coordinates
-	    sticky = ch == 0 ? "after" : ch == lineObj.text.length ? "before" :
-	      (measureCharPrepared(cm, preparedMeasure, ch - (ltr ? 1 : 0)).bottom + widgetHeight <= y) == ltr ?
-	      "after" : "before"
-	    // Now get accurate coordinates for this place, in order to get a
-	    // base X position
-	    var coords = cursorCoords(cm, Pos(lineNo, ch, sticky), "line", lineObj, preparedMeasure)
-	    baseX = coords.left
-	    outside = y < coords.top || y >= coords.bottom
-	  }
-
-	  ch = skipExtendingChars(lineObj.text, ch, 1)
-	  return PosWithInfo(lineNo, ch, sticky, outside, x - baseX)
-	}
-
-	function coordsBidiPart(cm, lineObj, lineNo, preparedMeasure, order, x, y) {
-	  // Bidi parts are sorted left-to-right, and in a non-line-wrapping
-	  // situation, we can take this ordering to correspond to the visual
-	  // ordering. This finds the first part whose end is after the given
-	  // coordinates.
-	  var index = findFirst(function (i) {
-	    var part = order[i], ltr = part.level != 1
-	    return boxIsAfter(cursorCoords(cm, Pos(lineNo, ltr ? part.to : part.from, ltr ? "before" : "after"),
-	                                   "line", lineObj, preparedMeasure), x, y, true)
-	  }, 0, order.length - 1)
-	  var part = order[index]
-	  // If this isn't the first part, the part's start is also after
-	  // the coordinates, and the coordinates aren't on the same line as
-	  // that start, move one part back.
-	  if (index > 0) {
-	    var ltr = part.level != 1
-	    var start = cursorCoords(cm, Pos(lineNo, ltr ? part.from : part.to, ltr ? "after" : "before"),
-	                             "line", lineObj, preparedMeasure)
-	    if (boxIsAfter(start, x, y, true) && start.top > y)
-	      { part = order[index - 1] }
-	  }
-	  return part
-	}
-
-	function coordsBidiPartWrapped(cm, lineObj, _lineNo, preparedMeasure, order, x, y) {
-	  // In a wrapped line, rtl text on wrapping boundaries can do things
-	  // that don't correspond to the ordering in our `order` array at
-	  // all, so a binary search doesn't work, and we want to return a
-	  // part that only spans one line so that the binary search in
-	  // coordsCharInner is safe. As such, we first find the extent of the
-	  // wrapped line, and then do a flat search in which we discard any
-	  // spans that aren't on the line.
-	  var ref = wrappedLineExtent(cm, lineObj, preparedMeasure, y);
-	  var begin = ref.begin;
-	  var end = ref.end;
-	  if (/\s/.test(lineObj.text.charAt(end - 1))) { end-- }
-	  var part = null, closestDist = null
-	  for (var i = 0; i < order.length; i++) {
-	    var p = order[i]
-	    if (p.from >= end || p.to <= begin) { continue }
-	    var ltr = p.level != 1
-	    var endX = measureCharPrepared(cm, preparedMeasure, ltr ? Math.min(end, p.to) - 1 : Math.max(begin, p.from)).right
-	    // Weigh against spans ending before this, so that they are only
-	    // picked if nothing ends after
-	    var dist = endX < x ? x - endX + 1e9 : endX - x
-	    if (!part || closestDist > dist) {
-	      part = p
-	      closestDist = dist
-	    }
-	  }
-	  if (!part) { part = order[order.length - 1] }
-	  // Clip the part to the wrapped line.
-	  if (part.from < begin) { part = {from: begin, to: part.to, level: part.level} }
-	  if (part.to > end) { part = {from: part.from, to: end, level: part.level} }
-	  return part
-	}
-
-	var measureText
-	// Compute the default text height.
-	function textHeight(display) {
-	  if (display.cachedTextHeight != null) { return display.cachedTextHeight }
-	  if (measureText == null) {
-	    measureText = elt("pre")
-	    // Measure a bunch of lines, for browsers that compute
-	    // fractional heights.
-	    for (var i = 0; i < 49; ++i) {
-	      measureText.appendChild(document.createTextNode("x"))
-	      measureText.appendChild(elt("br"))
-	    }
-	    measureText.appendChild(document.createTextNode("x"))
-	  }
-	  removeChildrenAndAdd(display.measure, measureText)
-	  var height = measureText.offsetHeight / 50
-	  if (height > 3) { display.cachedTextHeight = height }
-	  removeChildren(display.measure)
-	  return height || 1
-	}
-
-	// Compute the default character width.
-	function charWidth(display) {
-	  if (display.cachedCharWidth != null) { return display.cachedCharWidth }
-	  var anchor = elt("span", "xxxxxxxxxx")
-	  var pre = elt("pre", [anchor])
-	  removeChildrenAndAdd(display.measure, pre)
-	  var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10
-	  if (width > 2) { display.cachedCharWidth = width }
-	  return width || 10
-	}
-
-	// Do a bulk-read of the DOM positions and sizes needed to draw the
-	// view, so that we don't interleave reading and writing to the DOM.
-	function getDimensions(cm) {
-	  var d = cm.display, left = {}, width = {}
-	  var gutterLeft = d.gutters.clientLeft
-	  for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
-	    left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft
-	    width[cm.options.gutters[i]] = n.clientWidth
-	  }
-	  return {fixedPos: compensateForHScroll(d),
-	          gutterTotalWidth: d.gutters.offsetWidth,
-	          gutterLeft: left,
-	          gutterWidth: width,
-	          wrapperWidth: d.wrapper.clientWidth}
-	}
-
-	// Computes display.scroller.scrollLeft + display.gutters.offsetWidth,
-	// but using getBoundingClientRect to get a sub-pixel-accurate
-	// result.
-	function compensateForHScroll(display) {
-	  return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left
-	}
-
-	// Returns a function that estimates the height of a line, to use as
-	// first approximation until the line becomes visible (and is thus
-	// properly measurable).
-	function estimateHeight(cm) {
-	  var th = textHeight(cm.display), wrapping = cm.options.lineWrapping
-	  var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3)
-	  return function (line) {
-	    if (lineIsHidden(cm.doc, line)) { return 0 }
-
-	    var widgetsHeight = 0
-	    if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) {
-	      if (line.widgets[i].height) { widgetsHeight += line.widgets[i].height }
-	    } }
-
-	    if (wrapping)
-	      { return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th }
-	    else
-	      { return widgetsHeight + th }
-	  }
-	}
-
-	function estimateLineHeights(cm) {
-	  var doc = cm.doc, est = estimateHeight(cm)
-	  doc.iter(function (line) {
-	    var estHeight = est(line)
-	    if (estHeight != line.height) { updateLineHeight(line, estHeight) }
-	  })
-	}
-
-	// Given a mouse event, find the corresponding position. If liberal
-	// is false, it checks whether a gutter or scrollbar was clicked,
-	// and returns null if it was. forRect is used by rectangular
-	// selections, and tries to estimate a character position even for
-	// coordinates beyond the right of the text.
-	function posFromMouse(cm, e, liberal, forRect) {
-	  var display = cm.display
-	  if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") { return null }
-
-	  var x, y, space = display.lineSpace.getBoundingClientRect()
-	  // Fails unpredictably on IE[67] when mouse is dragged around quickly.
-	  try { x = e.clientX - space.left; y = e.clientY - space.top }
-	  catch (e) { return null }
-	  var coords = coordsChar(cm, x, y), line
-	  if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {
-	    var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length
-	    coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff))
-	  }
-	  return coords
-	}
-
-	// Find the view element corresponding to a given line. Return null
-	// when the line isn't visible.
-	function findViewIndex(cm, n) {
-	  if (n >= cm.display.viewTo) { return null }
-	  n -= cm.display.viewFrom
-	  if (n < 0) { return null }
-	  var view = cm.display.view
-	  for (var i = 0; i < view.length; i++) {
-	    n -= view[i].size
-	    if (n < 0) { return i }
-	  }
-	}
-
-	function updateSelection(cm) {
-	  cm.display.input.showSelection(cm.display.input.prepareSelection())
-	}
-
-	function prepareSelection(cm, primary) {
-	  if ( primary === void 0 ) primary = true;
-
-	  var doc = cm.doc, result = {}
-	  var curFragment = result.cursors = document.createDocumentFragment()
-	  var selFragment = result.selection = document.createDocumentFragment()
-
-	  for (var i = 0; i < doc.sel.ranges.length; i++) {
-	    if (!primary && i == doc.sel.primIndex) { continue }
-	    var range = doc.sel.ranges[i]
-	    if (range.from().line >= cm.display.viewTo || range.to().line < cm.display.viewFrom) { continue }
-	    var collapsed = range.empty()
-	    if (collapsed || cm.options.showCursorWhenSelecting)
-	      { drawSelectionCursor(cm, range.head, curFragment) }
-	    if (!collapsed)
-	      { drawSelectionRange(cm, range, selFragment) }
-	  }
-	  return result
-	}
-
-	// Draws a cursor for the given range
-	function drawSelectionCursor(cm, head, output) {
-	  var pos = cursorCoords(cm, head, "div", null, null, !cm.options.singleCursorHeightPerLine)
-
-	  var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"))
-	  cursor.style.left = pos.left + "px"
-	  cursor.style.top = pos.top + "px"
-	  cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px"
-
-	  if (pos.other) {
-	    // Secondary cursor, shown when on a 'jump' in bi-directional text
-	    var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"))
-	    otherCursor.style.display = ""
-	    otherCursor.style.left = pos.other.left + "px"
-	    otherCursor.style.top = pos.other.top + "px"
-	    otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px"
-	  }
-	}
-
-	function cmpCoords(a, b) { return a.top - b.top || a.left - b.left }
-
-	// Draws the given range as a highlighted selection
-	function drawSelectionRange(cm, range, output) {
-	  var display = cm.display, doc = cm.doc
-	  var fragment = document.createDocumentFragment()
-	  var padding = paddingH(cm.display), leftSide = padding.left
-	  var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right
-	  var docLTR = doc.direction == "ltr"
-
-	  function add(left, top, width, bottom) {
-	    if (top < 0) { top = 0 }
-	    top = Math.round(top)
-	    bottom = Math.round(bottom)
-	    fragment.appendChild(elt("div", null, "CodeMirror-selected", ("position: absolute; left: " + left + "px;\n                             top: " + top + "px; width: " + (width == null ? rightSide - left : width) + "px;\n                             height: " + (bottom - top) + "px")))
-	  }
-
-	  function drawForLine(line, fromArg, toArg) {
-	    var lineObj = getLine(doc, line)
-	    var lineLen = lineObj.text.length
-	    var start, end
-	    function coords(ch, bias) {
-	      return charCoords(cm, Pos(line, ch), "div", lineObj, bias)
-	    }
-
-	    function wrapX(pos, dir, side) {
-	      var extent = wrappedLineExtentChar(cm, lineObj, null, pos)
-	      var prop = (dir == "ltr") == (side == "after") ? "left" : "right"
-	      var ch = side == "after" ? extent.begin : extent.end - (/\s/.test(lineObj.text.charAt(extent.end - 1)) ? 2 : 1)
-	      return coords(ch, prop)[prop]
-	    }
-
-	    var order = getOrder(lineObj, doc.direction)
-	    iterateBidiSections(order, fromArg || 0, toArg == null ? lineLen : toArg, function (from, to, dir, i) {
-	      var ltr = dir == "ltr"
-	      var fromPos = coords(from, ltr ? "left" : "right")
-	      var toPos = coords(to - 1, ltr ? "right" : "left")
-
-	      var openStart = fromArg == null && from == 0, openEnd = toArg == null && to == lineLen
-	      var first = i == 0, last = !order || i == order.length - 1
-	      if (toPos.top - fromPos.top <= 3) { // Single line
-	        var openLeft = (docLTR ? openStart : openEnd) && first
-	        var openRight = (docLTR ? openEnd : openStart) && last
-	        var left = openLeft ? leftSide : (ltr ? fromPos : toPos).left
-	        var right = openRight ? rightSide : (ltr ? toPos : fromPos).right
-	        add(left, fromPos.top, right - left, fromPos.bottom)
-	      } else { // Multiple lines
-	        var topLeft, topRight, botLeft, botRight
-	        if (ltr) {
-	          topLeft = docLTR && openStart && first ? leftSide : fromPos.left
-	          topRight = docLTR ? rightSide : wrapX(from, dir, "before")
-	          botLeft = docLTR ? leftSide : wrapX(to, dir, "after")
-	          botRight = docLTR && openEnd && last ? rightSide : toPos.right
-	        } else {
-	          topLeft = !docLTR ? leftSide : wrapX(from, dir, "before")
-	          topRight = !docLTR && openStart && first ? rightSide : fromPos.right
-	          botLeft = !docLTR && openEnd && last ? leftSide : toPos.left
-	          botRight = !docLTR ? rightSide : wrapX(to, dir, "after")
-	        }
-	        add(topLeft, fromPos.top, topRight - topLeft, fromPos.bottom)
-	        if (fromPos.bottom < toPos.top) { add(leftSide, fromPos.bottom, null, toPos.top) }
-	        add(botLeft, toPos.top, botRight - botLeft, toPos.bottom)
-	      }
-
-	      if (!start || cmpCoords(fromPos, start) < 0) { start = fromPos }
-	      if (cmpCoords(toPos, start) < 0) { start = toPos }
-	      if (!end || cmpCoords(fromPos, end) < 0) { end = fromPos }
-	      if (cmpCoords(toPos, end) < 0) { end = toPos }
-	    })
-	    return {start: start, end: end}
-	  }
-
-	  var sFrom = range.from(), sTo = range.to()
-	  if (sFrom.line == sTo.line) {
-	    drawForLine(sFrom.line, sFrom.ch, sTo.ch)
-	  } else {
-	    var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line)
-	    var singleVLine = visualLine(fromLine) == visualLine(toLine)
-	    var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end
-	    var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start
-	    if (singleVLine) {
-	      if (leftEnd.top < rightStart.top - 2) {
-	        add(leftEnd.right, leftEnd.top, null, leftEnd.bottom)
-	        add(leftSide, rightStart.top, rightStart.left, rightStart.bottom)
-	      } else {
-	        add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom)
-	      }
-	    }
-	    if (leftEnd.bottom < rightStart.top)
-	      { add(leftSide, leftEnd.bottom, null, rightStart.top) }
-	  }
-
-	  output.appendChild(fragment)
-	}
-
-	// Cursor-blinking
-	function restartBlink(cm) {
-	  if (!cm.state.focused) { return }
-	  var display = cm.display
-	  clearInterval(display.blinker)
-	  var on = true
-	  display.cursorDiv.style.visibility = ""
-	  if (cm.options.cursorBlinkRate > 0)
-	    { display.blinker = setInterval(function () { return display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden"; },
-	      cm.options.cursorBlinkRate) }
-	  else if (cm.options.cursorBlinkRate < 0)
-	    { display.cursorDiv.style.visibility = "hidden" }
-	}
-
-	function ensureFocus(cm) {
-	  if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm) }
-	}
-
-	function delayBlurEvent(cm) {
-	  cm.state.delayingBlurEvent = true
-	  setTimeout(function () { if (cm.state.delayingBlurEvent) {
-	    cm.state.delayingBlurEvent = false
-	    onBlur(cm)
-	  } }, 100)
-	}
-
-	function onFocus(cm, e) {
-	  if (cm.state.delayingBlurEvent) { cm.state.delayingBlurEvent = false }
-
-	  if (cm.options.readOnly == "nocursor") { return }
-	  if (!cm.state.focused) {
-	    signal(cm, "focus", cm, e)
-	    cm.state.focused = true
-	    addClass(cm.display.wrapper, "CodeMirror-focused")
-	    // This test prevents this from firing when a context
-	    // menu is closed (since the input reset would kill the
-	    // select-all detection hack)
-	    if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) {
-	      cm.display.input.reset()
-	      if (webkit) { setTimeout(function () { return cm.display.input.reset(true); }, 20) } // Issue #1730
-	    }
-	    cm.display.input.receivedFocus()
-	  }
-	  restartBlink(cm)
-	}
-	function onBlur(cm, e) {
-	  if (cm.state.delayingBlurEvent) { return }
-
-	  if (cm.state.focused) {
-	    signal(cm, "blur", cm, e)
-	    cm.state.focused = false
-	    rmClass(cm.display.wrapper, "CodeMirror-focused")
-	  }
-	  clearInterval(cm.display.blinker)
-	  setTimeout(function () { if (!cm.state.focused) { cm.display.shift = false } }, 150)
-	}
-
-	// Read the actual heights of the rendered lines, and update their
-	// stored heights to match.
-	function updateHeightsInViewport(cm) {
-	  var display = cm.display
-	  var prevBottom = display.lineDiv.offsetTop
-	  for (var i = 0; i < display.view.length; i++) {
-	    var cur = display.view[i], height = (void 0)
-	    if (cur.hidden) { continue }
-	    if (ie && ie_version < 8) {
-	      var bot = cur.node.offsetTop + cur.node.offsetHeight
-	      height = bot - prevBottom
-	      prevBottom = bot
-	    } else {
-	      var box = cur.node.getBoundingClientRect()
-	      height = box.bottom - box.top
-	    }
-	    var diff = cur.line.height - height
-	    if (height < 2) { height = textHeight(display) }
-	    if (diff > .005 || diff < -.005) {
-	      updateLineHeight(cur.line, height)
-	      updateWidgetHeight(cur.line)
-	      if (cur.rest) { for (var j = 0; j < cur.rest.length; j++)
-	        { updateWidgetHeight(cur.rest[j]) } }
-	    }
-	  }
-	}
-
-	// Read and store the height of line widgets associated with the
-	// given line.
-	function updateWidgetHeight(line) {
-	  if (line.widgets) { for (var i = 0; i < line.widgets.length; ++i) {
-	    var w = line.widgets[i], parent = w.node.parentNode
-	    if (parent) { w.height = parent.offsetHeight }
-	  } }
-	}
-
-	// Compute the lines that are visible in a given viewport (defaults
-	// the the current scroll position). viewport may contain top,
-	// height, and ensure (see op.scrollToPos) properties.
-	function visibleLines(display, doc, viewport) {
-	  var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop
-	  top = Math.floor(top - paddingTop(display))
-	  var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight
-
-	  var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom)
-	  // Ensure is a {from: {line, ch}, to: {line, ch}} object, and
-	  // forces those lines into the viewport (if possible).
-	  if (viewport && viewport.ensure) {
-	    var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line
-	    if (ensureFrom < from) {
-	      from = ensureFrom
-	      to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight)
-	    } else if (Math.min(ensureTo, doc.lastLine()) >= to) {
-	      from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight)
-	      to = ensureTo
-	    }
-	  }
-	  return {from: from, to: Math.max(to, from + 1)}
-	}
-
-	// Re-align line numbers and gutter marks to compensate for
-	// horizontal scrolling.
-	function alignHorizontally(cm) {
-	  var display = cm.display, view = display.view
-	  if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) { return }
-	  var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft
-	  var gutterW = display.gutters.offsetWidth, left = comp + "px"
-	  for (var i = 0; i < view.length; i++) { if (!view[i].hidden) {
-	    if (cm.options.fixedGutter) {
-	      if (view[i].gutter)
-	        { view[i].gutter.style.left = left }
-	      if (view[i].gutterBackground)
-	        { view[i].gutterBackground.style.left = left }
-	    }
-	    var align = view[i].alignable
-	    if (align) { for (var j = 0; j < align.length; j++)
-	      { align[j].style.left = left } }
-	  } }
-	  if (cm.options.fixedGutter)
-	    { display.gutters.style.left = (comp + gutterW) + "px" }
-	}
-
-	// Used to ensure that the line number gutter is still the right
-	// size for the current document size. Returns true when an update
-	// is needed.
-	function maybeUpdateLineNumberWidth(cm) {
-	  if (!cm.options.lineNumbers) { return false }
-	  var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display
-	  if (last.length != display.lineNumChars) {
-	    var test = display.measure.appendChild(elt("div", [elt("div", last)],
-	                                               "CodeMirror-linenumber CodeMirror-gutter-elt"))
-	    var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW
-	    display.lineGutter.style.width = ""
-	    display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1
-	    display.lineNumWidth = display.lineNumInnerWidth + padding
-	    display.lineNumChars = display.lineNumInnerWidth ? last.length : -1
-	    display.lineGutter.style.width = display.lineNumWidth + "px"
-	    updateGutterSpace(cm)
-	    return true
-	  }
-	  return false
-	}
-
-	// SCROLLING THINGS INTO VIEW
-
-	// If an editor sits on the top or bottom of the window, partially
-	// scrolled out of view, this ensures that the cursor is visible.
-	function maybeScrollWindow(cm, rect) {
-	  if (signalDOMEvent(cm, "scrollCursorIntoView")) { return }
-
-	  var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null
-	  if (rect.top + box.top < 0) { doScroll = true }
-	  else if (rect.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) { doScroll = false }
-	  if (doScroll != null && !phantom) {
-	    var scrollNode = elt("div", "\u200b", null, ("position: absolute;\n                         top: " + (rect.top - display.viewOffset - paddingTop(cm.display)) + "px;\n                         height: " + (rect.bottom - rect.top + scrollGap(cm) + display.barHeight) + "px;\n                         left: " + (rect.left) + "px; width: " + (Math.max(2, rect.right - rect.left)) + "px;"))
-	    cm.display.lineSpace.appendChild(scrollNode)
-	    scrollNode.scrollIntoView(doScroll)
-	    cm.display.lineSpace.removeChild(scrollNode)
-	  }
-	}
-
-	// Scroll a given position into view (immediately), verifying that
-	// it actually became visible (as line heights are accurately
-	// measured, the position of something may 'drift' during drawing).
-	function scrollPosIntoView(cm, pos, end, margin) {
-	  if (margin == null) { margin = 0 }
-	  var rect
-	  if (!cm.options.lineWrapping && pos == end) {
-	    // Set pos and end to the cursor positions around the character pos sticks to
-	    // If pos.sticky == "before", that is around pos.ch - 1, otherwise around pos.ch
-	    // If pos == Pos(_, 0, "before"), pos and end are unchanged
-	    pos = pos.ch ? Pos(pos.line, pos.sticky == "before" ? pos.ch - 1 : pos.ch, "after") : pos
-	    end = pos.sticky == "before" ? Pos(pos.line, pos.ch + 1, "before") : pos
-	  }
-	  for (var limit = 0; limit < 5; limit++) {
-	    var changed = false
-	    var coords = cursorCoords(cm, pos)
-	    var endCoords = !end || end == pos ? coords : cursorCoords(cm, end)
-	    rect = {left: Math.min(coords.left, endCoords.left),
-	            top: Math.min(coords.top, endCoords.top) - margin,
-	            right: Math.max(coords.left, endCoords.left),
-	            bottom: Math.max(coords.bottom, endCoords.bottom) + margin}
-	    var scrollPos = calculateScrollPos(cm, rect)
-	    var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft
-	    if (scrollPos.scrollTop != null) {
-	      updateScrollTop(cm, scrollPos.scrollTop)
-	      if (Math.abs(cm.doc.scrollTop - startTop) > 1) { changed = true }
-	    }
-	    if (scrollPos.scrollLeft != null) {
-	      setScrollLeft(cm, scrollPos.scrollLeft)
-	      if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) { changed = true }
-	    }
-	    if (!changed) { break }
-	  }
-	  return rect
-	}
-
-	// Scroll a given set of coordinates into view (immediately).
-	function scrollIntoView(cm, rect) {
-	  var scrollPos = calculateScrollPos(cm, rect)
-	  if (scrollPos.scrollTop != null) { updateScrollTop(cm, scrollPos.scrollTop) }
-	  if (scrollPos.scrollLeft != null) { setScrollLeft(cm, scrollPos.scrollLeft) }
-	}
-
-	// Calculate a new scroll position needed to scroll the given
-	// rectangle into view. Returns an object with scrollTop and
-	// scrollLeft properties. When these are undefined, the
-	// vertical/horizontal position does not need to be adjusted.
-	function calculateScrollPos(cm, rect) {
-	  var display = cm.display, snapMargin = textHeight(cm.display)
-	  if (rect.top < 0) { rect.top = 0 }
-	  var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop
-	  var screen = displayHeight(cm), result = {}
-	  if (rect.bottom - rect.top > screen) { rect.bottom = rect.top + screen }
-	  var docBottom = cm.doc.height + paddingVert(display)
-	  var atTop = rect.top < snapMargin, atBottom = rect.bottom > docBottom - snapMargin
-	  if (rect.top < screentop) {
-	    result.scrollTop = atTop ? 0 : rect.top
-	  } else if (rect.bottom > screentop + screen) {
-	    var newTop = Math.min(rect.top, (atBottom ? docBottom : rect.bottom) - screen)
-	    if (newTop != screentop) { result.scrollTop = newTop }
-	  }
-
-	  var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft
-	  var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0)
-	  var tooWide = rect.right - rect.left > screenw
-	  if (tooWide) { rect.right = rect.left + screenw }
-	  if (rect.left < 10)
-	    { result.scrollLeft = 0 }
-	  else if (rect.left < screenleft)
-	    { result.scrollLeft = Math.max(0, rect.left - (tooWide ? 0 : 10)) }
-	  else if (rect.right > screenw + screenleft - 3)
-	    { result.scrollLeft = rect.right + (tooWide ? 0 : 10) - screenw }
-	  return result
-	}
-
-	// Store a relative adjustment to the scroll position in the current
-	// operation (to be applied when the operation finishes).
-	function addToScrollTop(cm, top) {
-	  if (top == null) { return }
-	  resolveScrollToPos(cm)
-	  cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top
-	}
-
-	// Make sure that at the end of the operation the current cursor is
-	// shown.
-	function ensureCursorVisible(cm) {
-	  resolveScrollToPos(cm)
-	  var cur = cm.getCursor()
-	  cm.curOp.scrollToPos = {from: cur, to: cur, margin: cm.options.cursorScrollMargin}
-	}
-
-	function scrollToCoords(cm, x, y) {
-	  if (x != null || y != null) { resolveScrollToPos(cm) }
-	  if (x != null) { cm.curOp.scrollLeft = x }
-	  if (y != null) { cm.curOp.scrollTop = y }
-	}
-
-	function scrollToRange(cm, range) {
-	  resolveScrollToPos(cm)
-	  cm.curOp.scrollToPos = range
-	}
-
-	// When an operation has its scrollToPos property set, and another
-	// scroll action is applied before the end of the operation, this
-	// 'simulates' scrolling that position into view in a cheap way, so
-	// that the effect of intermediate scroll commands is not ignored.
-	function resolveScrollToPos(cm) {
-	  var range = cm.curOp.scrollToPos
-	  if (range) {
-	    cm.curOp.scrollToPos = null
-	    var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to)
-	    scrollToCoordsRange(cm, from, to, range.margin)
-	  }
-	}
-
-	function scrollToCoordsRange(cm, from, to, margin) {
-	  var sPos = calculateScrollPos(cm, {
-	    left: Math.min(from.left, to.left),
-	    top: Math.min(from.top, to.top) - margin,
-	    right: Math.max(from.right, to.right),
-	    bottom: Math.max(from.bottom, to.bottom) + margin
-	  })
-	  scrollToCoords(cm, sPos.scrollLeft, sPos.scrollTop)
-	}
-
-	// Sync the scrollable area and scrollbars, ensure the viewport
-	// covers the visible area.
-	function updateScrollTop(cm, val) {
-	  if (Math.abs(cm.doc.scrollTop - val) < 2) { return }
-	  if (!gecko) { updateDisplaySimple(cm, {top: val}) }
-	  setScrollTop(cm, val, true)
-	  if (gecko) { updateDisplaySimple(cm) }
-	  startWorker(cm, 100)
-	}
-
-	function setScrollTop(cm, val, forceScroll) {
-	  val = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, val)
-	  if (cm.display.scroller.scrollTop == val && !forceScroll) { return }
-	  cm.doc.scrollTop = val
-	  cm.display.scrollbars.setScrollTop(val)
-	  if (cm.display.scroller.scrollTop != val) { cm.display.scroller.scrollTop = val }
-	}
-
-	// Sync scroller and scrollbar, ensure the gutter elements are
-	// aligned.
-	function setScrollLeft(cm, val, isScroller, forceScroll) {
-	  val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth)
-	  if ((isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) && !forceScroll) { return }
-	  cm.doc.scrollLeft = val
-	  alignHorizontally(cm)
-	  if (cm.display.scroller.scrollLeft != val) { cm.display.scroller.scrollLeft = val }
-	  cm.display.scrollbars.setScrollLeft(val)
-	}
-
-	// SCROLLBARS
-
-	// Prepare DOM reads needed to update the scrollbars. Done in one
-	// shot to minimize update/measure roundtrips.
-	function measureForScrollbars(cm) {
-	  var d = cm.display, gutterW = d.gutters.offsetWidth
-	  var docH = Math.round(cm.doc.height + paddingVert(cm.display))
-	  return {
-	    clientHeight: d.scroller.clientHeight,
-	    viewHeight: d.wrapper.clientHeight,
-	    scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth,
-	    viewWidth: d.wrapper.clientWidth,
-	    barLeft: cm.options.fixedGutter ? gutterW : 0,
-	    docHeight: docH,
-	    scrollHeight: docH + scrollGap(cm) + d.barHeight,
-	    nativeBarWidth: d.nativeBarWidth,
-	    gutterWidth: gutterW
-	  }
-	}
-
-	var NativeScrollbars = function(place, scroll, cm) {
-	  this.cm = cm
-	  var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar")
-	  var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar")
-	  place(vert); place(horiz)
-
-	  on(vert, "scroll", function () {
-	    if (vert.clientHeight) { scroll(vert.scrollTop, "vertical") }
-	  })
-	  on(horiz, "scroll", function () {
-	    if (horiz.clientWidth) { scroll(horiz.scrollLeft, "horizontal") }
-	  })
-
-	  this.checkedZeroWidth = false
-	  // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
-	  if (ie && ie_version < 8) { this.horiz.style.minHeight = this.vert.style.minWidth = "18px" }
-	};
-
-	NativeScrollbars.prototype.update = function (measure) {
-	  var needsH = measure.scrollWidth > measure.clientWidth + 1
-	  var needsV = measure.scrollHeight > measure.clientHeight + 1
-	  var sWidth = measure.nativeBarWidth
-
-	  if (needsV) {
-	    this.vert.style.display = "block"
-	    this.vert.style.bottom = needsH ? sWidth + "px" : "0"
-	    var totalHeight = measure.viewHeight - (needsH ? sWidth : 0)
-	    // A bug in IE8 can cause this value to be negative, so guard it.
-	    this.vert.firstChild.style.height =
-	      Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px"
-	  } else {
-	    this.vert.style.display = ""
-	    this.vert.firstChild.style.height = "0"
-	  }
-
-	  if (needsH) {
-	    this.horiz.style.display = "block"
-	    this.horiz.style.right = needsV ? sWidth + "px" : "0"
-	    this.horiz.style.left = measure.barLeft + "px"
-	    var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0)
-	    this.horiz.firstChild.style.width =
-	      Math.max(0, measure.scrollWidth - measure.clientWidth + totalWidth) + "px"
-	  } else {
-	    this.horiz.style.display = ""
-	    this.horiz.firstChild.style.width = "0"
-	  }
-
-	  if (!this.checkedZeroWidth && measure.clientHeight > 0) {
-	    if (sWidth == 0) { this.zeroWidthHack() }
-	    this.checkedZeroWidth = true
-	  }
-
-	  return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0}
-	};
-
-	NativeScrollbars.prototype.setScrollLeft = function (pos) {
-	  if (this.horiz.scrollLeft != pos) { this.horiz.scrollLeft = pos }
-	  if (this.disableHoriz) { this.enableZeroWidthBar(this.horiz, this.disableHoriz, "horiz") }
-	};
-
-	NativeScrollbars.prototype.setScrollTop = function (pos) {
-	  if (this.vert.scrollTop != pos) { this.vert.scrollTop = pos }
-	  if (this.disableVert) { this.enableZeroWidthBar(this.vert, this.disableVert, "vert") }
-	};
-
-	NativeScrollbars.prototype.zeroWidthHack = function () {
-	  var w = mac && !mac_geMountainLion ? "12px" : "18px"
-	  this.horiz.style.height = this.vert.style.width = w
-	  this.horiz.style.pointerEvents = this.vert.style.pointerEvents = "none"
-	  this.disableHoriz = new Delayed
-	  this.disableVert = new Delayed
-	};
-
-	NativeScrollbars.prototype.enableZeroWidthBar = function (bar, delay, type) {
-	  bar.style.pointerEvents = "auto"
-	  function maybeDisable() {
-	    // To find out whether the scrollbar is still visible, we
-	    // check whether the element under the pixel in the bottom
-	    // right corner of the scrollbar box is the scrollbar box
-	    // itself (when the bar is still visible) or its filler child
-	    // (when the bar is hidden). If it is still visible, we keep
-	    // it enabled, if it's hidden, we disable pointer events.
-	    var box = bar.getBoundingClientRect()
-	    var elt = type == "vert" ? document.elementFromPoint(box.right - 1, (box.top + box.bottom) / 2)
-	        : document.elementFromPoint((box.right + box.left) / 2, box.bottom - 1)
-	    if (elt != bar) { bar.style.pointerEvents = "none" }
-	    else { delay.set(1000, maybeDisable) }
-	  }
-	  delay.set(1000, maybeDisable)
-	};
-
-	NativeScrollbars.prototype.clear = function () {
-	  var parent = this.horiz.parentNode
-	  parent.removeChild(this.horiz)
-	  parent.removeChild(this.vert)
-	};
-
-	var NullScrollbars = function () {};
-
-	NullScrollbars.prototype.update = function () { return {bottom: 0, right: 0} };
-	NullScrollbars.prototype.setScrollLeft = function () {};
-	NullScrollbars.prototype.setScrollTop = function () {};
-	NullScrollbars.prototype.clear = function () {};
-
-	function updateScrollbars(cm, measure) {
-	  if (!measure) { measure = measureForScrollbars(cm) }
-	  var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight
-	  updateScrollbarsInner(cm, measure)
-	  for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) {
-	    if (startWidth != cm.display.barWidth && cm.options.lineWrapping)
-	      { updateHeightsInViewport(cm) }
-	    updateScrollbarsInner(cm, measureForScrollbars(cm))
-	    startWidth = cm.display.barWidth; startHeight = cm.display.barHeight
-	  }
-	}
-
-	// Re-synchronize the fake scrollbars with the actual size of the
-	// content.
-	function updateScrollbarsInner(cm, measure) {
-	  var d = cm.display
-	  var sizes = d.scrollbars.update(measure)
-
-	  d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px"
-	  d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px"
-	  d.heightForcer.style.borderBottom = sizes.bottom + "px solid transparent"
-
-	  if (sizes.right && sizes.bottom) {
-	    d.scrollbarFiller.style.display = "block"
-	    d.scrollbarFiller.style.height = sizes.bottom + "px"
-	    d.scrollbarFiller.style.width = sizes.right + "px"
-	  } else { d.scrollbarFiller.style.display = "" }
-	  if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
-	    d.gutterFiller.style.display = "block"
-	    d.gutterFiller.style.height = sizes.bottom + "px"
-	    d.gutterFiller.style.width = measure.gutterWidth + "px"
-	  } else { d.gutterFiller.style.display = "" }
-	}
-
-	var scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars}
-
-	function initScrollbars(cm) {
-	  if (cm.display.scrollbars) {
-	    cm.display.scrollbars.clear()
-	    if (cm.display.scrollbars.addClass)
-	      { rmClass(cm.display.wrapper, cm.display.scrollbars.addClass) }
-	  }
-
-	  cm.display.scrollbars = new scrollbarModel[cm.options.scrollbarStyle](function (node) {
-	    cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller)
-	    // Prevent clicks in the scrollbars from killing focus
-	    on(node, "mousedown", function () {
-	      if (cm.state.focused) { setTimeout(function () { return cm.display.input.focus(); }, 0) }
-	    })
-	    node.setAttribute("cm-not-content", "true")
-	  }, function (pos, axis) {
-	    if (axis == "horizontal") { setScrollLeft(cm, pos) }
-	    else { updateScrollTop(cm, pos) }
-	  }, cm)
-	  if (cm.display.scrollbars.addClass)
-	    { addClass(cm.display.wrapper, cm.display.scrollbars.addClass) }
-	}
-
-	// Operations are used to wrap a series of changes to the editor
-	// state in such a way that each change won't have to update the
-	// cursor and display (which would be awkward, slow, and
-	// error-prone). Instead, display updates are batched and then all
-	// combined and executed at once.
-
-	var nextOpId = 0
-	// Start a new operation.
-	function startOperation(cm) {
-	  cm.curOp = {
-	    cm: cm,
-	    viewChanged: false,      // Flag that indicates that lines might need to be redrawn
-	    startHeight: cm.doc.height, // Used to detect need to update scrollbar
-	    forceUpdate: false,      // Used to force a redraw
-	    updateInput: null,       // Whether to reset the input textarea
-	    typing: false,           // Whether this reset should be careful to leave existing text (for compositing)
-	    changeObjs: null,        // Accumulated changes, for firing change events
-	    cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on
-	    cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already
-	    selectionChanged: false, // Whether the selection needs to be redrawn
-	    updateMaxLine: false,    // Set when the widest line needs to be determined anew
-	    scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet
-	    scrollToPos: null,       // Used to scroll to a specific position
-	    focus: false,
-	    id: ++nextOpId           // Unique ID
-	  }
-	  pushOperation(cm.curOp)
-	}
-
-	// Finish an operation, updating the display and signalling delayed events
-	function endOperation(cm) {
-	  var op = cm.curOp
-	  finishOperation(op, function (group) {
-	    for (var i = 0; i < group.ops.length; i++)
-	      { group.ops[i].cm.curOp = null }
-	    endOperations(group)
-	  })
-	}
-
-	// The DOM updates done when an operation finishes are batched so
-	// that the minimum number of relayouts are required.
-	function endOperations(group) {
-	  var ops = group.ops
-	  for (var i = 0; i < ops.length; i++) // Read DOM
-	    { endOperation_R1(ops[i]) }
-	  for (var i$1 = 0; i$1 < ops.length; i$1++) // Write DOM (maybe)
-	    { endOperation_W1(ops[i$1]) }
-	  for (var i$2 = 0; i$2 < ops.length; i$2++) // Read DOM
-	    { endOperation_R2(ops[i$2]) }
-	  for (var i$3 = 0; i$3 < ops.length; i$3++) // Write DOM (maybe)
-	    { endOperation_W2(ops[i$3]) }
-	  for (var i$4 = 0; i$4 < ops.length; i$4++) // Read DOM
-	    { endOperation_finish(ops[i$4]) }
-	}
-
-	function endOperation_R1(op) {
-	  var cm = op.cm, display = cm.display
-	  maybeClipScrollbars(cm)
-	  if (op.updateMaxLine) { findMaxLine(cm) }
-
-	  op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null ||
-	    op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom ||
-	                       op.scrollToPos.to.line >= display.viewTo) ||
-	    display.maxLineChanged && cm.options.lineWrapping
-	  op.update = op.mustUpdate &&
-	    new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate)
-	}
-
-	function endOperation_W1(op) {
-	  op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update)
-	}
-
-	function endOperation_R2(op) {
-	  var cm = op.cm, display = cm.display
-	  if (op.updatedDisplay) { updateHeightsInViewport(cm) }
-
-	  op.barMeasure = measureForScrollbars(cm)
-
-	  // If the max line changed since it was last measured, measure it,
-	  // and ensure the document's width matches it.
-	  // updateDisplay_W2 will use these properties to do the actual resizing
-	  if (display.maxLineChanged && !cm.options.lineWrapping) {
-	    op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3
-	    cm.display.sizerWidth = op.adjustWidthTo
-	    op.barMeasure.scrollWidth =
-	      Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth)
-	    op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm))
-	  }
-
-	  if (op.updatedDisplay || op.selectionChanged)
-	    { op.preparedSelection = display.input.prepareSelection() }
-	}
-
-	function endOperation_W2(op) {
-	  var cm = op.cm
-
-	  if (op.adjustWidthTo != null) {
-	    cm.display.sizer.style.minWidth = op.adjustWidthTo + "px"
-	    if (op.maxScrollLeft < cm.doc.scrollLeft)
-	      { setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true) }
-	    cm.display.maxLineChanged = false
-	  }
-
-	  var takeFocus = op.focus && op.focus == activeElt()
-	  if (op.preparedSelection)
-	    { cm.display.input.showSelection(op.preparedSelection, takeFocus) }
-	  if (op.updatedDisplay || op.startHeight != cm.doc.height)
-	    { updateScrollbars(cm, op.barMeasure) }
-	  if (op.updatedDisplay)
-	    { setDocumentHeight(cm, op.barMeasure) }
-
-	  if (op.selectionChanged) { restartBlink(cm) }
-
-	  if (cm.state.focused && op.updateInput)
-	    { cm.display.input.reset(op.typing) }
-	  if (takeFocus) { ensureFocus(op.cm) }
-	}
-
-	function endOperation_finish(op) {
-	  var cm = op.cm, display = cm.display, doc = cm.doc
-
-	  if (op.updatedDisplay) { postUpdateDisplay(cm, op.update) }
-
-	  // Abort mouse wheel delta measurement, when scrolling explicitly
-	  if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos))
-	    { display.wheelStartX = display.wheelStartY = null }
-
-	  // Propagate the scroll position to the actual DOM scroller
-	  if (op.scrollTop != null) { setScrollTop(cm, op.scrollTop, op.forceScroll) }
-
-	  if (op.scrollLeft != null) { setScrollLeft(cm, op.scrollLeft, true, true) }
-	  // If we need to scroll a specific position into view, do so.
-	  if (op.scrollToPos) {
-	    var rect = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from),
-	                                 clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin)
-	    maybeScrollWindow(cm, rect)
-	  }
-
-	  // Fire events for markers that are hidden/unidden by editing or
-	  // undoing
-	  var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers
-	  if (hidden) { for (var i = 0; i < hidden.length; ++i)
-	    { if (!hidden[i].lines.length) { signal(hidden[i], "hide") } } }
-	  if (unhidden) { for (var i$1 = 0; i$1 < unhidden.length; ++i$1)
-	    { if (unhidden[i$1].lines.length) { signal(unhidden[i$1], "unhide") } } }
-
-	  if (display.wrapper.offsetHeight)
-	    { doc.scrollTop = cm.display.scroller.scrollTop }
-
-	  // Fire change events, and delayed event handlers
-	  if (op.changeObjs)
-	    { signal(cm, "changes", cm, op.changeObjs) }
-	  if (op.update)
-	    { op.update.finish() }
-	}
-
-	// Run the given function in an operation
-	function runInOp(cm, f) {
-	  if (cm.curOp) { return f() }
-	  startOperation(cm)
-	  try { return f() }
-	  finally { endOperation(cm) }
-	}
-	// Wraps a function in an operation. Returns the wrapped function.
-	function operation(cm, f) {
-	  return function() {
-	    if (cm.curOp) { return f.apply(cm, arguments) }
-	    startOperation(cm)
-	    try { return f.apply(cm, arguments) }
-	    finally { endOperation(cm) }
-	  }
-	}
-	// Used to add methods to editor and doc instances, wrapping them in
-	// operations.
-	function methodOp(f) {
-	  return function() {
-	    if (this.curOp) { return f.apply(this, arguments) }
-	    startOperation(this)
-	    try { return f.apply(this, arguments) }
-	    finally { endOperation(this) }
-	  }
-	}
-	function docMethodOp(f) {
-	  return function() {
-	    var cm = this.cm
-	    if (!cm || cm.curOp) { return f.apply(this, arguments) }
-	    startOperation(cm)
-	    try { return f.apply(this, arguments) }
-	    finally { endOperation(cm) }
-	  }
-	}
-
-	// Updates the display.view data structure for a given change to the
-	// document. From and to are in pre-change coordinates. Lendiff is
-	// the amount of lines added or subtracted by the change. This is
-	// used for changes that span multiple lines, or change the way
-	// lines are divided into visual lines. regLineChange (below)
-	// registers single-line changes.
-	function regChange(cm, from, to, lendiff) {
-	  if (from == null) { from = cm.doc.first }
-	  if (to == null) { to = cm.doc.first + cm.doc.size }
-	  if (!lendiff) { lendiff = 0 }
-
-	  var display = cm.display
-	  if (lendiff && to < display.viewTo &&
-	      (display.updateLineNumbers == null || display.updateLineNumbers > from))
-	    { display.updateLineNumbers = from }
-
-	  cm.curOp.viewChanged = true
-
-	  if (from >= display.viewTo) { // Change after
-	    if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo)
-	      { resetView(cm) }
-	  } else if (to <= display.viewFrom) { // Change before
-	    if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {
-	      resetView(cm)
-	    } else {
-	      display.viewFrom += lendiff
-	      display.viewTo += lendiff
-	    }
-	  } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap
-	    resetView(cm)
-	  } else if (from <= display.viewFrom) { // Top overlap
-	    var cut = viewCuttingPoint(cm, to, to + lendiff, 1)
-	    if (cut) {
-	      display.view = display.view.slice(cut.index)
-	      display.viewFrom = cut.lineN
-	      display.viewTo += lendiff
-	    } else {
-	      resetView(cm)
-	    }
-	  } else if (to >= display.viewTo) { // Bottom overlap
-	    var cut$1 = viewCuttingPoint(cm, from, from, -1)
-	    if (cut$1) {
-	      display.view = display.view.slice(0, cut$1.index)
-	      display.viewTo = cut$1.lineN
-	    } else {
-	      resetView(cm)
-	    }
-	  } else { // Gap in the middle
-	    var cutTop = viewCuttingPoint(cm, from, from, -1)
-	    var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1)
-	    if (cutTop && cutBot) {
-	      display.view = display.view.slice(0, cutTop.index)
-	        .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))
-	        .concat(display.view.slice(cutBot.index))
-	      display.viewTo += lendiff
-	    } else {
-	      resetView(cm)
-	    }
-	  }
-
-	  var ext = display.externalMeasured
-	  if (ext) {
-	    if (to < ext.lineN)
-	      { ext.lineN += lendiff }
-	    else if (from < ext.lineN + ext.size)
-	      { display.externalMeasured = null }
-	  }
-	}
-
-	// Register a change to a single line. Type must be one of "text",
-	// "gutter", "class", "widget"
-	function regLineChange(cm, line, type) {
-	  cm.curOp.viewChanged = true
-	  var display = cm.display, ext = cm.display.externalMeasured
-	  if (ext && line >= ext.lineN && line < ext.lineN + ext.size)
-	    { display.externalMeasured = null }
-
-	  if (line < display.viewFrom || line >= display.viewTo) { return }
-	  var lineView = display.view[findViewIndex(cm, line)]
-	  if (lineView.node == null) { return }
-	  var arr = lineView.changes || (lineView.changes = [])
-	  if (indexOf(arr, type) == -1) { arr.push(type) }
-	}
-
-	// Clear the view.
-	function resetView(cm) {
-	  cm.display.viewFrom = cm.display.viewTo = cm.doc.first
-	  cm.display.view = []
-	  cm.display.viewOffset = 0
-	}
-
-	function viewCuttingPoint(cm, oldN, newN, dir) {
-	  var index = findViewIndex(cm, oldN), diff, view = cm.display.view
-	  if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size)
-	    { return {index: index, lineN: newN} }
-	  var n = cm.display.viewFrom
-	  for (var i = 0; i < index; i++)
-	    { n += view[i].size }
-	  if (n != oldN) {
-	    if (dir > 0) {
-	      if (index == view.length - 1) { return null }
-	      diff = (n + view[index].size) - oldN
-	      index++
-	    } else {
-	      diff = n - oldN
-	    }
-	    oldN += diff; newN += diff
-	  }
-	  while (visualLineNo(cm.doc, newN) != newN) {
-	    if (index == (dir < 0 ? 0 : view.length - 1)) { return null }
-	    newN += dir * view[index - (dir < 0 ? 1 : 0)].size
-	    index += dir
-	  }
-	  return {index: index, lineN: newN}
-	}
-
-	// Force the view to cover a given range, adding empty view element
-	// or clipping off existing ones as needed.
-	function adjustView(cm, from, to) {
-	  var display = cm.display, view = display.view
-	  if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) {
-	    display.view = buildViewArray(cm, from, to)
-	    display.viewFrom = from
-	  } else {
-	    if (display.viewFrom > from)
-	      { display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view) }
-	    else if (display.viewFrom < from)
-	      { display.view = display.view.slice(findViewIndex(cm, from)) }
-	    display.viewFrom = from
-	    if (display.viewTo < to)
-	      { display.view = display.view.concat(buildViewArray(cm, display.viewTo, to)) }
-	    else if (display.viewTo > to)
-	      { display.view = display.view.slice(0, findViewIndex(cm, to)) }
-	  }
-	  display.viewTo = to
-	}
-
-	// Count the number of lines in the view whose DOM representation is
-	// out of date (or nonexistent).
-	function countDirtyView(cm) {
-	  var view = cm.display.view, dirty = 0
-	  for (var i = 0; i < view.length; i++) {
-	    var lineView = view[i]
-	    if (!lineView.hidden && (!lineView.node || lineView.changes)) { ++dirty }
-	  }
-	  return dirty
-	}
-
-	// HIGHLIGHT WORKER
-
-	function startWorker(cm, time) {
-	  if (cm.doc.highlightFrontier < cm.display.viewTo)
-	    { cm.state.highlight.set(time, bind(highlightWorker, cm)) }
-	}
-
-	function highlightWorker(cm) {
-	  var doc = cm.doc
-	  if (doc.highlightFrontier >= cm.display.viewTo) { return }
-	  var end = +new Date + cm.options.workTime
-	  var context = getContextBefore(cm, doc.highlightFrontier)
-	  var changedLines = []
-
-	  doc.iter(context.line, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function (line) {
-	    if (context.line >= cm.display.viewFrom) { // Visible
-	      var oldStyles = line.styles
-	      var resetState = line.text.length > cm.options.maxHighlightLength ? copyState(doc.mode, context.state) : null
-	      var highlighted = highlightLine(cm, line, context, true)
-	      if (resetState) { context.state = resetState }
-	      line.styles = highlighted.styles
-	      var oldCls = line.styleClasses, newCls = highlighted.classes
-	      if (newCls) { line.styleClasses = newCls }
-	      else if (oldCls) { line.styleClasses = null }
-	      var ischange = !oldStyles || oldStyles.length != line.styles.length ||
-	        oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass)
-	      for (var i = 0; !ischange && i < oldStyles.length; ++i) { ischange = oldStyles[i] != line.styles[i] }
-	      if (ischange) { changedLines.push(context.line) }
-	      line.stateAfter = context.save()
-	      context.nextLine()
-	    } else {
-	      if (line.text.length <= cm.options.maxHighlightLength)
-	        { processLine(cm, line.text, context) }
-	      line.stateAfter = context.line % 5 == 0 ? context.save() : null
-	      context.nextLine()
-	    }
-	    if (+new Date > end) {
-	      startWorker(cm, cm.options.workDelay)
-	      return true
-	    }
-	  })
-	  doc.highlightFrontier = context.line
-	  doc.modeFrontier = Math.max(doc.modeFrontier, context.line)
-	  if (changedLines.length) { runInOp(cm, function () {
-	    for (var i = 0; i < changedLines.length; i++)
-	      { regLineChange(cm, changedLines[i], "text") }
-	  }) }
-	}
-
-	// DISPLAY DRAWING
-
-	var DisplayUpdate = function(cm, viewport, force) {
-	  var display = cm.display
-
-	  this.viewport = viewport
-	  // Store some values that we'll need later (but don't want to force a relayout for)
-	  this.visible = visibleLines(display, cm.doc, viewport)
-	  this.editorIsHidden = !display.wrapper.offsetWidth
-	  this.wrapperHeight = display.wrapper.clientHeight
-	  this.wrapperWidth = display.wrapper.clientWidth
-	  this.oldDisplayWidth = displayWidth(cm)
-	  this.force = force
-	  this.dims = getDimensions(cm)
-	  this.events = []
-	};
-
-	DisplayUpdate.prototype.signal = function (emitter, type) {
-	  if (hasHandler(emitter, type))
-	    { this.events.push(arguments) }
-	};
-	DisplayUpdate.prototype.finish = function () {
-	    var this$1 = this;
-
-	  for (var i = 0; i < this.events.length; i++)
-	    { signal.apply(null, this$1.events[i]) }
-	};
-
-	function maybeClipScrollbars(cm) {
-	  var display = cm.display
-	  if (!display.scrollbarsClipped && display.scroller.offsetWidth) {
-	    display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth
-	    display.heightForcer.style.height = scrollGap(cm) + "px"
-	    display.sizer.style.marginBottom = -display.nativeBarWidth + "px"
-	    display.sizer.style.borderRightWidth = scrollGap(cm) + "px"
-	    display.scrollbarsClipped = true
-	  }
-	}
-
-	function selectionSnapshot(cm) {
-	  if (cm.hasFocus()) { return null }
-	  var active = activeElt()
-	  if (!active || !contains(cm.display.lineDiv, active)) { return null }
-	  var result = {activeElt: active}
-	  if (window.getSelection) {
-	    var sel = window.getSelection()
-	    if (sel.anchorNode && sel.extend && contains(cm.display.lineDiv, sel.anchorNode)) {
-	      result.anchorNode = sel.anchorNode
-	      result.anchorOffset = sel.anchorOffset
-	      result.focusNode = sel.focusNode
-	      result.focusOffset = sel.focusOffset
-	    }
-	  }
-	  return result
-	}
-
-	function restoreSelection(snapshot) {
-	  if (!snapshot || !snapshot.activeElt || snapshot.activeElt == activeElt()) { return }
-	  snapshot.activeElt.focus()
-	  if (snapshot.anchorNode && contains(document.body, snapshot.anchorNode) && contains(document.body, snapshot.focusNode)) {
-	    var sel = window.getSelection(), range = document.createRange()
-	    range.setEnd(snapshot.anchorNode, snapshot.anchorOffset)
-	    range.collapse(false)
-	    sel.removeAllRanges()
-	    sel.addRange(range)
-	    sel.extend(snapshot.focusNode, snapshot.focusOffset)
-	  }
-	}
-
-	// Does the actual updating of the line display. Bails out
-	// (returning false) when there is nothing to be done and forced is
-	// false.
-	function updateDisplayIfNeeded(cm, update) {
-	  var display = cm.display, doc = cm.doc
-
-	  if (update.editorIsHidden) {
-	    resetView(cm)
-	    return false
-	  }
-
-	  // Bail out if the visible area is already rendered and nothing changed.
-	  if (!update.force &&
-	      update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo &&
-	      (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) &&
-	      display.renderedView == display.view && countDirtyView(cm) == 0)
-	    { return false }
-
-	  if (maybeUpdateLineNumberWidth(cm)) {
-	    resetView(cm)
-	    update.dims = getDimensions(cm)
-	  }
-
-	  // Compute a suitable new viewport (from & to)
-	  var end = doc.first + doc.size
-	  var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first)
-	  var to = Math.min(end, update.visible.to + cm.options.viewportMargin)
-	  if (display.viewFrom < from && from - display.viewFrom < 20) { from = Math.max(doc.first, display.viewFrom) }
-	  if (display.viewTo > to && display.viewTo - to < 20) { to = Math.min(end, display.viewTo) }
-	  if (sawCollapsedSpans) {
-	    from = visualLineNo(cm.doc, from)
-	    to = visualLineEndNo(cm.doc, to)
-	  }
-
-	  var different = from != display.viewFrom || to != display.viewTo ||
-	    display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth
-	  adjustView(cm, from, to)
-
-	  display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom))
-	  // Position the mover div to align with the current scroll position
-	  cm.display.mover.style.top = display.viewOffset + "px"
-
-	  var toUpdate = countDirtyView(cm)
-	  if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view &&
-	      (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo))
-	    { return false }
-
-	  // For big changes, we hide the enclosing element during the
-	  // update, since that speeds up the operations on most browsers.
-	  var selSnapshot = selectionSnapshot(cm)
-	  if (toUpdate > 4) { display.lineDiv.style.display = "none" }
-	  patchDisplay(cm, display.updateLineNumbers, update.dims)
-	  if (toUpdate > 4) { display.lineDiv.style.display = "" }
-	  display.renderedView = display.view
-	  // There might have been a widget with a focused element that got
-	  // hidden or updated, if so re-focus it.
-	  restoreSelection(selSnapshot)
-
-	  // Prevent selection and cursors from interfering with the scroll
-	  // width and height.
-	  removeChildren(display.cursorDiv)
-	  removeChildren(display.selectionDiv)
-	  display.gutters.style.height = display.sizer.style.minHeight = 0
-
-	  if (different) {
-	    display.lastWrapHeight = update.wrapperHeight
-	    display.lastWrapWidth = update.wrapperWidth
-	    startWorker(cm, 400)
-	  }
-
-	  display.updateLineNumbers = null
-
-	  return true
-	}
-
-	function postUpdateDisplay(cm, update) {
-	  var viewport = update.viewport
-
-	  for (var first = true;; first = false) {
-	    if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) {
-	      // Clip forced viewport to actual scrollable area.
-	      if (viewport && viewport.top != null)
-	        { viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)} }
-	      // Updated line heights might result in the drawn area not
-	      // actually covering the viewport. Keep looping until it does.
-	      update.visible = visibleLines(cm.display, cm.doc, viewport)
-	      if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo)
-	        { break }
-	    }
-	    if (!updateDisplayIfNeeded(cm, update)) { break }
-	    updateHeightsInViewport(cm)
-	    var barMeasure = measureForScrollbars(cm)
-	    updateSelection(cm)
-	    updateScrollbars(cm, barMeasure)
-	    setDocumentHeight(cm, barMeasure)
-	    update.force = false
-	  }
-
-	  update.signal(cm, "update", cm)
-	  if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) {
-	    update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo)
-	    cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo
-	  }
-	}
-
-	function updateDisplaySimple(cm, viewport) {
-	  var update = new DisplayUpdate(cm, viewport)
-	  if (updateDisplayIfNeeded(cm, update)) {
-	    updateHeightsInViewport(cm)
-	    postUpdateDisplay(cm, update)
-	    var barMeasure = measureForScrollbars(cm)
-	    updateSelection(cm)
-	    updateScrollbars(cm, barMeasure)
-	    setDocumentHeight(cm, barMeasure)
-	    update.finish()
-	  }
-	}
-
-	// Sync the actual display DOM structure with display.view, removing
-	// nodes for lines that are no longer in view, and creating the ones
-	// that are not there yet, and updating the ones that are out of
-	// date.
-	function patchDisplay(cm, updateNumbersFrom, dims) {
-	  var display = cm.display, lineNumbers = cm.options.lineNumbers
-	  var container = display.lineDiv, cur = container.firstChild
-
-	  function rm(node) {
-	    var next = node.nextSibling
-	    // Works around a throw-scroll bug in OS X Webkit
-	    if (webkit && mac && cm.display.currentWheelTarget == node)
-	      { node.style.display = "none" }
-	    else
-	      { node.parentNode.removeChild(node) }
-	    return next
-	  }
-
-	  var view = display.view, lineN = display.viewFrom
-	  // Loop over the elements in the view, syncing cur (the DOM nodes
-	  // in display.lineDiv) with the view as we go.
-	  for (var i = 0; i < view.length; i++) {
-	    var lineView = view[i]
-	    if (lineView.hidden) {
-	    } else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet
-	      var node = buildLineElement(cm, lineView, lineN, dims)
-	      container.insertBefore(node, cur)
-	    } else { // Already drawn
-	      while (cur != lineView.node) { cur = rm(cur) }
-	      var updateNumber = lineNumbers && updateNumbersFrom != null &&
-	        updateNumbersFrom <= lineN && lineView.lineNumber
-	      if (lineView.changes) {
-	        if (indexOf(lineView.changes, "gutter") > -1) { updateNumber = false }
-	        updateLineForChanges(cm, lineView, lineN, dims)
-	      }
-	      if (updateNumber) {
-	        removeChildren(lineView.lineNumber)
-	        lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)))
-	      }
-	      cur = lineView.node.nextSibling
-	    }
-	    lineN += lineView.size
-	  }
-	  while (cur) { cur = rm(cur) }
-	}
-
-	function updateGutterSpace(cm) {
-	  var width = cm.display.gutters.offsetWidth
-	  cm.display.sizer.style.marginLeft = width + "px"
-	}
-
-	function setDocumentHeight(cm, measure) {
-	  cm.display.sizer.style.minHeight = measure.docHeight + "px"
-	  cm.display.heightForcer.style.top = measure.docHeight + "px"
-	  cm.display.gutters.style.height = (measure.docHeight + cm.display.barHeight + scrollGap(cm)) + "px"
-	}
-
-	// Rebuild the gutter elements, ensure the margin to the left of the
-	// code matches their width.
-	function updateGutters(cm) {
-	  var gutters = cm.display.gutters, specs = cm.options.gutters
-	  removeChildren(gutters)
-	  var i = 0
-	  for (; i < specs.length; ++i) {
-	    var gutterClass = specs[i]
-	    var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass))
-	    if (gutterClass == "CodeMirror-linenumbers") {
-	      cm.display.lineGutter = gElt
-	      gElt.style.width = (cm.display.lineNumWidth || 1) + "px"
-	    }
-	  }
-	  gutters.style.display = i ? "" : "none"
-	  updateGutterSpace(cm)
-	}
-
-	// Make sure the gutters options contains the element
-	// "CodeMirror-linenumbers" when the lineNumbers option is true.
-	function setGuttersForLineNumbers(options) {
-	  var found = indexOf(options.gutters, "CodeMirror-linenumbers")
-	  if (found == -1 && options.lineNumbers) {
-	    options.gutters = options.gutters.concat(["CodeMirror-linenumbers"])
-	  } else if (found > -1 && !options.lineNumbers) {
-	    options.gutters = options.gutters.slice(0)
-	    options.gutters.splice(found, 1)
-	  }
-	}
-
-	var wheelSamples = 0;
-	var wheelPixelsPerUnit = null;
-	// Fill in a browser-detected starting value on browsers where we
-	// know one. These don't have to be accurate -- the result of them
-	// being wrong would just be a slight flicker on the first wheel
-	// scroll (if it is large enough).
-	if (ie) { wheelPixelsPerUnit = -.53 }
-	else if (gecko) { wheelPixelsPerUnit = 15 }
-	else if (chrome) { wheelPixelsPerUnit = -.7 }
-	else if (safari) { wheelPixelsPerUnit = -1/3 }
-
-	function wheelEventDelta(e) {
-	  var dx = e.wheelDeltaX, dy = e.wheelDeltaY
-	  if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) { dx = e.detail }
-	  if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) { dy = e.detail }
-	  else if (dy == null) { dy = e.wheelDelta }
-	  return {x: dx, y: dy}
-	}
-	function wheelEventPixels(e) {
-	  var delta = wheelEventDelta(e)
-	  delta.x *= wheelPixelsPerUnit
-	  delta.y *= wheelPixelsPerUnit
-	  return delta
-	}
-
-	function onScrollWheel(cm, e) {
-	  var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y
-
-	  var display = cm.display, scroll = display.scroller
-	  // Quit if there's nothing to scroll here
-	  var canScrollX = scroll.scrollWidth > scroll.clientWidth
-	  var canScrollY = scroll.scrollHeight > scroll.clientHeight
-	  if (!(dx && canScrollX || dy && canScrollY)) { return }
-
-	  // Webkit browsers on OS X abort momentum scrolls when the target
-	  // of the scroll event is removed from the scrollable element.
-	  // This hack (see related code in patchDisplay) makes sure the
-	  // element is kept around.
-	  if (dy && mac && webkit) {
-	    outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {
-	      for (var i = 0; i < view.length; i++) {
-	        if (view[i].node == cur) {
-	          cm.display.currentWheelTarget = cur
-	          break outer
-	        }
-	      }
-	    }
-	  }
-
-	  // On some browsers, horizontal scrolling will cause redraws to
-	  // happen before the gutter has been realigned, causing it to
-	  // wriggle around in a most unseemly way. When we have an
-	  // estimated pixels/delta value, we just handle horizontal
-	  // scrolling entirely here. It'll be slightly off from native, but
-	  // better than glitching out.
-	  if (dx && !gecko && !presto && wheelPixelsPerUnit != null) {
-	    if (dy && canScrollY)
-	      { updateScrollTop(cm, Math.max(0, scroll.scrollTop + dy * wheelPixelsPerUnit)) }
-	    setScrollLeft(cm, Math.max(0, scroll.scrollLeft + dx * wheelPixelsPerUnit))
-	    // Only prevent default scrolling if vertical scrolling is
-	    // actually possible. Otherwise, it causes vertical scroll
-	    // jitter on OSX trackpads when deltaX is small and deltaY
-	    // is large (issue #3579)
-	    if (!dy || (dy && canScrollY))
-	      { e_preventDefault(e) }
-	    display.wheelStartX = null // Abort measurement, if in progress
-	    return
-	  }
-
-	  // 'Project' the visible viewport to cover the area that is being
-	  // scrolled into view (if we know enough to estimate it).
-	  if (dy && wheelPixelsPerUnit != null) {
-	    var pixels = dy * wheelPixelsPerUnit
-	    var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight
-	    if (pixels < 0) { top = Math.max(0, top + pixels - 50) }
-	    else { bot = Math.min(cm.doc.height, bot + pixels + 50) }
-	    updateDisplaySimple(cm, {top: top, bottom: bot})
-	  }
-
-	  if (wheelSamples < 20) {
-	    if (display.wheelStartX == null) {
-	      display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop
-	      display.wheelDX = dx; display.wheelDY = dy
-	      setTimeout(function () {
-	        if (display.wheelStartX == null) { return }
-	        var movedX = scroll.scrollLeft - display.wheelStartX
-	        var movedY = scroll.scrollTop - display.wheelStartY
-	        var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||
-	          (movedX && display.wheelDX && movedX / display.wheelDX)
-	        display.wheelStartX = display.wheelStartY = null
-	        if (!sample) { return }
-	        wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1)
-	        ++wheelSamples
-	      }, 200)
-	    } else {
-	      display.wheelDX += dx; display.wheelDY += dy
-	    }
-	  }
-	}
-
-	// Selection objects are immutable. A new one is created every time
-	// the selection changes. A selection is one or more non-overlapping
-	// (and non-touching) ranges, sorted, and an integer that indicates
-	// which one is the primary selection (the one that's scrolled into
-	// view, that getCursor returns, etc).
-	var Selection = function(ranges, primIndex) {
-	  this.ranges = ranges
-	  this.primIndex = primIndex
-	};
-
-	Selection.prototype.primary = function () { return this.ranges[this.primIndex] };
-
-	Selection.prototype.equals = function (other) {
-	    var this$1 = this;
-
-	  if (other == this) { return true }
-	  if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) { return false }
-	  for (var i = 0; i < this.ranges.length; i++) {
-	    var here = this$1.ranges[i], there = other.ranges[i]
-	    if (!equalCursorPos(here.anchor, there.anchor) || !equalCursorPos(here.head, there.head)) { return false }
-	  }
-	  return true
-	};
-
-	Selection.prototype.deepCopy = function () {
-	    var this$1 = this;
-
-	  var out = []
-	  for (var i = 0; i < this.ranges.length; i++)
-	    { out[i] = new Range(copyPos(this$1.ranges[i].anchor), copyPos(this$1.ranges[i].head)) }
-	  return new Selection(out, this.primIndex)
-	};
-
-	Selection.prototype.somethingSelected = function () {
-	    var this$1 = this;
-
-	  for (var i = 0; i < this.ranges.length; i++)
-	    { if (!this$1.ranges[i].empty()) { return true } }
-	  return false
-	};
-
-	Selection.prototype.contains = function (pos, end) {
-	    var this$1 = this;
-
-	  if (!end) { end = pos }
-	  for (var i = 0; i < this.ranges.length; i++) {
-	    var range = this$1.ranges[i]
-	    if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)
-	      { return i }
-	  }
-	  return -1
-	};
-
-	var Range = function(anchor, head) {
-	  this.anchor = anchor; this.head = head
-	};
-
-	Range.prototype.from = function () { return minPos(this.anchor, this.head) };
-	Range.prototype.to = function () { return maxPos(this.anchor, this.head) };
-	Range.prototype.empty = function () { return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch };
-
-	// Take an unsorted, potentially overlapping set of ranges, and
-	// build a selection out of it. 'Consumes' ranges array (modifying
-	// it).
-	function normalizeSelection(ranges, primIndex) {
-	  var prim = ranges[primIndex]
-	  ranges.sort(function (a, b) { return cmp(a.from(), b.from()); })
-	  primIndex = indexOf(ranges, prim)
-	  for (var i = 1; i < ranges.length; i++) {
-	    var cur = ranges[i], prev = ranges[i - 1]
-	    if (cmp(prev.to(), cur.from()) >= 0) {
-	      var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to())
-	      var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head
-	      if (i <= primIndex) { --primIndex }
-	      ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to))
-	    }
-	  }
-	  return new Selection(ranges, primIndex)
-	}
-
-	function simpleSelection(anchor, head) {
-	  return new Selection([new Range(anchor, head || anchor)], 0)
-	}
-
-	// Compute the position of the end of a change (its 'to' property
-	// refers to the pre-change end).
-	function changeEnd(change) {
-	  if (!change.text) { return change.to }
-	  return Pos(change.from.line + change.text.length - 1,
-	             lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0))
-	}
-
-	// Adjust a position to refer to the post-change position of the
-	// same text, or the end of the change if the change covers it.
-	function adjustForChange(pos, change) {
-	  if (cmp(pos, change.from) < 0) { return pos }
-	  if (cmp(pos, change.to) <= 0) { return changeEnd(change) }
-
-	  var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch
-	  if (pos.line == change.to.line) { ch += changeEnd(change).ch - change.to.ch }
-	  return Pos(line, ch)
-	}
-
-	function computeSelAfterChange(doc, change) {
-	  var out = []
-	  for (var i = 0; i < doc.sel.ranges.length; i++) {
-	    var range = doc.sel.ranges[i]
-	    out.push(new Range(adjustForChange(range.anchor, change),
-	                       adjustForChange(range.head, change)))
-	  }
-	  return normalizeSelection(out, doc.sel.primIndex)
-	}
-
-	function offsetPos(pos, old, nw) {
-	  if (pos.line == old.line)
-	    { return Pos(nw.line, pos.ch - old.ch + nw.ch) }
-	  else
-	    { return Pos(nw.line + (pos.line - old.line), pos.ch) }
-	}
-
-	// Used by replaceSelections to allow moving the selection to the
-	// start or around the replaced test. Hint may be "start" or "around".
-	function computeReplacedSel(doc, changes, hint) {
-	  var out = []
-	  var oldPrev = Pos(doc.first, 0), newPrev = oldPrev
-	  for (var i = 0; i < changes.length; i++) {
-	    var change = changes[i]
-	    var from = offsetPos(change.from, oldPrev, newPrev)
-	    var to = offsetPos(changeEnd(change), oldPrev, newPrev)
-	    oldPrev = change.to
-	    newPrev = to
-	    if (hint == "around") {
-	      var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0
-	      out[i] = new Range(inv ? to : from, inv ? from : to)
-	    } else {
-	      out[i] = new Range(from, from)
-	    }
-	  }
-	  return new Selection(out, doc.sel.primIndex)
-	}
-
-	// Used to get the editor into a consistent state again when options change.
-
-	function loadMode(cm) {
-	  cm.doc.mode = getMode(cm.options, cm.doc.modeOption)
-	  resetModeState(cm)
-	}
-
-	function resetModeState(cm) {
-	  cm.doc.iter(function (line) {
-	    if (line.stateAfter) { line.stateAfter = null }
-	    if (line.styles) { line.styles = null }
-	  })
-	  cm.doc.modeFrontier = cm.doc.highlightFrontier = cm.doc.first
-	  startWorker(cm, 100)
-	  cm.state.modeGen++
-	  if (cm.curOp) { regChange(cm) }
-	}
-
-	// DOCUMENT DATA STRUCTURE
-
-	// By default, updates that start and end at the beginning of a line
-	// are treated specially, in order to make the association of line
-	// widgets and marker elements with the text behave more intuitive.
-	function isWholeLineUpdate(doc, change) {
-	  return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" &&
-	    (!doc.cm || doc.cm.options.wholeLineUpdateBefore)
-	}
-
-	// Perform a change on the document data structure.
-	function updateDoc(doc, change, markedSpans, estimateHeight) {
-	  function spansFor(n) {return markedSpans ? markedSpans[n] : null}
-	  function update(line, text, spans) {
-	    updateLine(line, text, spans, estimateHeight)
-	    signalLater(line, "change", line, change)
-	  }
-	  function linesFor(start, end) {
-	    var result = []
-	    for (var i = start; i < end; ++i)
-	      { result.push(new Line(text[i], spansFor(i), estimateHeight)) }
-	    return result
-	  }
-
-	  var from = change.from, to = change.to, text = change.text
-	  var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line)
-	  var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line
-
-	  // Adjust the line structure
-	  if (change.full) {
-	    doc.insert(0, linesFor(0, text.length))
-	    doc.remove(text.length, doc.size - text.length)
-	  } else if (isWholeLineUpdate(doc, change)) {
-	    // This is a whole-line replace. Treated specially to make
-	    // sure line objects move the way they are supposed to.
-	    var added = linesFor(0, text.length - 1)
-	    update(lastLine, lastLine.text, lastSpans)
-	    if (nlines) { doc.remove(from.line, nlines) }
-	    if (added.length) { doc.insert(from.line, added) }
-	  } else if (firstLine == lastLine) {
-	    if (text.length == 1) {
-	      update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans)
-	    } else {
-	      var added$1 = linesFor(1, text.length - 1)
-	      added$1.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight))
-	      update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0))
-	      doc.insert(from.line + 1, added$1)
-	    }
-	  } else if (text.length == 1) {
-	    update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0))
-	    doc.remove(from.line + 1, nlines)
-	  } else {
-	    update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0))
-	    update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans)
-	    var added$2 = linesFor(1, text.length - 1)
-	    if (nlines > 1) { doc.remove(from.line + 1, nlines - 1) }
-	    doc.insert(from.line + 1, added$2)
-	  }
-
-	  signalLater(doc, "change", doc, change)
-	}
-
-	// Call f for all linked documents.
-	function linkedDocs(doc, f, sharedHistOnly) {
-	  function propagate(doc, skip, sharedHist) {
-	    if (doc.linked) { for (var i = 0; i < doc.linked.length; ++i) {
-	      var rel = doc.linked[i]
-	      if (rel.doc == skip) { continue }
-	      var shared = sharedHist && rel.sharedHist
-	      if (sharedHistOnly && !shared) { continue }
-	      f(rel.doc, shared)
-	      propagate(rel.doc, doc, shared)
-	    } }
-	  }
-	  propagate(doc, null, true)
-	}
-
-	// Attach a document to an editor.
-	function attachDoc(cm, doc) {
-	  if (doc.cm) { throw new Error("This document is already in use.") }
-	  cm.doc = doc
-	  doc.cm = cm
-	  estimateLineHeights(cm)
-	  loadMode(cm)
-	  setDirectionClass(cm)
-	  if (!cm.options.lineWrapping) { findMaxLine(cm) }
-	  cm.options.mode = doc.modeOption
-	  regChange(cm)
-	}
-
-	function setDirectionClass(cm) {
-	  ;(cm.doc.direction == "rtl" ? addClass : rmClass)(cm.display.lineDiv, "CodeMirror-rtl")
-	}
-
-	function directionChanged(cm) {
-	  runInOp(cm, function () {
-	    setDirectionClass(cm)
-	    regChange(cm)
-	  })
-	}
-
-	function History(startGen) {
-	  // Arrays of change events and selections. Doing something adds an
-	  // event to done and clears undo. Undoing moves events from done
-	  // to undone, redoing moves them in the other direction.
-	  this.done = []; this.undone = []
-	  this.undoDepth = Infinity
-	  // Used to track when changes can be merged into a single undo
-	  // event
-	  this.lastModTime = this.lastSelTime = 0
-	  this.lastOp = this.lastSelOp = null
-	  this.lastOrigin = this.lastSelOrigin = null
-	  // Used by the isClean() method
-	  this.generation = this.maxGeneration = startGen || 1
-	}
-
-	// Create a history change event from an updateDoc-style change
-	// object.
-	function historyChangeFromChange(doc, change) {
-	  var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)}
-	  attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1)
-	  linkedDocs(doc, function (doc) { return attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); }, true)
-	  return histChange
-	}
-
-	// Pop all selection events off the end of a history array. Stop at
-	// a change event.
-	function clearSelectionEvents(array) {
-	  while (array.length) {
-	    var last = lst(array)
-	    if (last.ranges) { array.pop() }
-	    else { break }
-	  }
-	}
-
-	// Find the top change event in the history. Pop off selection
-	// events that are in the way.
-	function lastChangeEvent(hist, force) {
-	  if (force) {
-	    clearSelectionEvents(hist.done)
-	    return lst(hist.done)
-	  } else if (hist.done.length && !lst(hist.done).ranges) {
-	    return lst(hist.done)
-	  } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {
-	    hist.done.pop()
-	    return lst(hist.done)
-	  }
-	}
-
-	// Register a change in the history. Merges changes that are within
-	// a single operation, or are close together with an origin that
-	// allows merging (starting with "+") into a single event.
-	function addChangeToHistory(doc, change, selAfter, opId) {
-	  var hist = doc.history
-	  hist.undone.length = 0
-	  var time = +new Date, cur
-	  var last
-
-	  if ((hist.lastOp == opId ||
-	       hist.lastOrigin == change.origin && change.origin &&
-	       ((change.origin.charAt(0) == "+" && hist.lastModTime > time - (doc.cm ? doc.cm.options.historyEventDelay : 500)) ||
-	        change.origin.charAt(0) == "*")) &&
-	      (cur = lastChangeEvent(hist, hist.lastOp == opId))) {
-	    // Merge this change into the last event
-	    last = lst(cur.changes)
-	    if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {
-	      // Optimized case for simple insertion -- don't want to add
-	      // new changesets for every character typed
-	      last.to = changeEnd(change)
-	    } else {
-	      // Add new sub-event
-	      cur.changes.push(historyChangeFromChange(doc, change))
-	    }
-	  } else {
-	    // Can not be merged, start a new event.
-	    var before = lst(hist.done)
-	    if (!before || !before.ranges)
-	      { pushSelectionToHistory(doc.sel, hist.done) }
-	    cur = {changes: [historyChangeFromChange(doc, change)],
-	           generation: hist.generation}
-	    hist.done.push(cur)
-	    while (hist.done.length > hist.undoDepth) {
-	      hist.done.shift()
-	      if (!hist.done[0].ranges) { hist.done.shift() }
-	    }
-	  }
-	  hist.done.push(selAfter)
-	  hist.generation = ++hist.maxGeneration
-	  hist.lastModTime = hist.lastSelTime = time
-	  hist.lastOp = hist.lastSelOp = opId
-	  hist.lastOrigin = hist.lastSelOrigin = change.origin
-
-	  if (!last) { signal(doc, "historyAdded") }
-	}
-
-	function selectionEventCanBeMerged(doc, origin, prev, sel) {
-	  var ch = origin.charAt(0)
-	  return ch == "*" ||
-	    ch == "+" &&
-	    prev.ranges.length == sel.ranges.length &&
-	    prev.somethingSelected() == sel.somethingSelected() &&
-	    new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500)
-	}
-
-	// Called whenever the selection changes, sets the new selection as
-	// the pending selection in the history, and pushes the old pending
-	// selection into the 'done' array when it was significantly
-	// different (in number of selected ranges, emptiness, or time).
-	function addSelectionToHistory(doc, sel, opId, options) {
-	  var hist = doc.history, origin = options && options.origin
-
-	  // A new event is started when the previous origin does not match
-	  // the current, or the origins don't allow matching. Origins
-	  // starting with * are always merged, those starting with + are
-	  // merged when similar and close together in time.
-	  if (opId == hist.lastSelOp ||
-	      (origin && hist.lastSelOrigin == origin &&
-	       (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin ||
-	        selectionEventCanBeMerged(doc, origin, lst(hist.done), sel))))
-	    { hist.done[hist.done.length - 1] = sel }
-	  else
-	    { pushSelectionToHistory(sel, hist.done) }
-
-	  hist.lastSelTime = +new Date
-	  hist.lastSelOrigin = origin
-	  hist.lastSelOp = opId
-	  if (options && options.clearRedo !== false)
-	    { clearSelectionEvents(hist.undone) }
-	}
-
-	function pushSelectionToHistory(sel, dest) {
-	  var top = lst(dest)
-	  if (!(top && top.ranges && top.equals(sel)))
-	    { dest.push(sel) }
-	}
-
-	// Used to store marked span information in the history.
-	function attachLocalSpans(doc, change, from, to) {
-	  var existing = change["spans_" + doc.id], n = 0
-	  doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function (line) {
-	    if (line.markedSpans)
-	      { (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans }
-	    ++n
-	  })
-	}
-
-	// When un/re-doing restores text containing marked spans, those
-	// that have been explicitly cleared should not be restored.
-	function removeClearedSpans(spans) {
-	  if (!spans) { return null }
-	  var out
-	  for (var i = 0; i < spans.length; ++i) {
-	    if (spans[i].marker.explicitlyCleared) { if (!out) { out = spans.slice(0, i) } }
-	    else if (out) { out.push(spans[i]) }
-	  }
-	  return !out ? spans : out.length ? out : null
-	}
-
-	// Retrieve and filter the old marked spans stored in a change event.
-	function getOldSpans(doc, change) {
-	  var found = change["spans_" + doc.id]
-	  if (!found) { return null }
-	  var nw = []
-	  for (var i = 0; i < change.text.length; ++i)
-	    { nw.push(removeClearedSpans(found[i])) }
-	  return nw
-	}
-
-	// Used for un/re-doing changes from the history. Combines the
-	// result of computing the existing spans with the set of spans that
-	// existed in the history (so that deleting around a span and then
-	// undoing brings back the span).
-	function mergeOldSpans(doc, change) {
-	  var old = getOldSpans(doc, change)
-	  var stretched = stretchSpansOverChange(doc, change)
-	  if (!old) { return stretched }
-	  if (!stretched) { return old }
-
-	  for (var i = 0; i < old.length; ++i) {
-	    var oldCur = old[i], stretchCur = stretched[i]
-	    if (oldCur && stretchCur) {
-	      spans: for (var j = 0; j < stretchCur.length; ++j) {
-	        var span = stretchCur[j]
-	        for (var k = 0; k < oldCur.length; ++k)
-	          { if (oldCur[k].marker == span.marker) { continue spans } }
-	        oldCur.push(span)
-	      }
-	    } else if (stretchCur) {
-	      old[i] = stretchCur
-	    }
-	  }
-	  return old
-	}
-
-	// Used both to provide a JSON-safe object in .getHistory, and, when
-	// detaching a document, to split the history in two
-	function copyHistoryArray(events, newGroup, instantiateSel) {
-	  var copy = []
-	  for (var i = 0; i < events.length; ++i) {
-	    var event = events[i]
-	    if (event.ranges) {
-	      copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event)
-	      continue
-	    }
-	    var changes = event.changes, newChanges = []
-	    copy.push({changes: newChanges})
-	    for (var j = 0; j < changes.length; ++j) {
-	      var change = changes[j], m = (void 0)
-	      newChanges.push({from: change.from, to: change.to, text: change.text})
-	      if (newGroup) { for (var prop in change) { if (m = prop.match(/^spans_(\d+)$/)) {
-	        if (indexOf(newGroup, Number(m[1])) > -1) {
-	          lst(newChanges)[prop] = change[prop]
-	          delete change[prop]
-	        }
-	      } } }
-	    }
-	  }
-	  return copy
-	}
-
-	// The 'scroll' parameter given to many of these indicated whether
-	// the new cursor position should be scrolled into view after
-	// modifying the selection.
-
-	// If shift is held or the extend flag is set, extends a range to
-	// include a given position (and optionally a second position).
-	// Otherwise, simply returns the range between the given positions.
-	// Used for cursor motion and such.
-	function extendRange(range, head, other, extend) {
-	  if (extend) {
-	    var anchor = range.anchor
-	    if (other) {
-	      var posBefore = cmp(head, anchor) < 0
-	      if (posBefore != (cmp(other, anchor) < 0)) {
-	        anchor = head
-	        head = other
-	      } else if (posBefore != (cmp(head, other) < 0)) {
-	        head = other
-	      }
-	    }
-	    return new Range(anchor, head)
-	  } else {
-	    return new Range(other || head, head)
-	  }
-	}
-
-	// Extend the primary selection range, discard the rest.
-	function extendSelection(doc, head, other, options, extend) {
-	  if (extend == null) { extend = doc.cm && (doc.cm.display.shift || doc.extend) }
-	  setSelection(doc, new Selection([extendRange(doc.sel.primary(), head, other, extend)], 0), options)
-	}
-
-	// Extend all selections (pos is an array of selections with length
-	// equal the number of selections)
-	function extendSelections(doc, heads, options) {
-	  var out = []
-	  var extend = doc.cm && (doc.cm.display.shift || doc.extend)
-	  for (var i = 0; i < doc.sel.ranges.length; i++)
-	    { out[i] = extendRange(doc.sel.ranges[i], heads[i], null, extend) }
-	  var newSel = normalizeSelection(out, doc.sel.primIndex)
-	  setSelection(doc, newSel, options)
-	}
-
-	// Updates a single range in the selection.
-	function replaceOneSelection(doc, i, range, options) {
-	  var ranges = doc.sel.ranges.slice(0)
-	  ranges[i] = range
-	  setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options)
-	}
-
-	// Reset the selection to a single range.
-	function setSimpleSelection(doc, anchor, head, options) {
-	  setSelection(doc, simpleSelection(anchor, head), options)
-	}
-
-	// Give beforeSelectionChange handlers a change to influence a
-	// selection update.
-	function filterSelectionChange(doc, sel, options) {
-	  var obj = {
-	    ranges: sel.ranges,
-	    update: function(ranges) {
-	      var this$1 = this;
-
-	      this.ranges = []
-	      for (var i = 0; i < ranges.length; i++)
-	        { this$1.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
-	                                   clipPos(doc, ranges[i].head)) }
-	    },
-	    origin: options && options.origin
-	  }
-	  signal(doc, "beforeSelectionChange", doc, obj)
-	  if (doc.cm) { signal(doc.cm, "beforeSelectionChange", doc.cm, obj) }
-	  if (obj.ranges != sel.ranges) { return normalizeSelection(obj.ranges, obj.ranges.length - 1) }
-	  else { return sel }
-	}
-
-	function setSelectionReplaceHistory(doc, sel, options) {
-	  var done = doc.history.done, last = lst(done)
-	  if (last && last.ranges) {
-	    done[done.length - 1] = sel
-	    setSelectionNoUndo(doc, sel, options)
-	  } else {
-	    setSelection(doc, sel, options)
-	  }
-	}
-
-	// Set a new selection.
-	function setSelection(doc, sel, options) {
-	  setSelectionNoUndo(doc, sel, options)
-	  addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options)
-	}
-
-	function setSelectionNoUndo(doc, sel, options) {
-	  if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange"))
-	    { sel = filterSelectionChange(doc, sel, options) }
-
-	  var bias = options && options.bias ||
-	    (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1)
-	  setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true))
-
-	  if (!(options && options.scroll === false) && doc.cm)
-	    { ensureCursorVisible(doc.cm) }
-	}
-
-	function setSelectionInner(doc, sel) {
-	  if (sel.equals(doc.sel)) { return }
-
-	  doc.sel = sel
-
-	  if (doc.cm) {
-	    doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = true
-	    signalCursorActivity(doc.cm)
-	  }
-	  signalLater(doc, "cursorActivity", doc)
-	}
-
-	// Verify that the selection does not partially select any atomic
-	// marked ranges.
-	function reCheckSelection(doc) {
-	  setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false))
-	}
-
-	// Return a selection that does not partially select any atomic
-	// ranges.
-	function skipAtomicInSelection(doc, sel, bias, mayClear) {
-	  var out
-	  for (var i = 0; i < sel.ranges.length; i++) {
-	    var range = sel.ranges[i]
-	    var old = sel.ranges.length == doc.sel.ranges.length && doc.sel.ranges[i]
-	    var newAnchor = skipAtomic(doc, range.anchor, old && old.anchor, bias, mayClear)
-	    var newHead = skipAtomic(doc, range.head, old && old.head, bias, mayClear)
-	    if (out || newAnchor != range.anchor || newHead != range.head) {
-	      if (!out) { out = sel.ranges.slice(0, i) }
-	      out[i] = new Range(newAnchor, newHead)
-	    }
-	  }
-	  return out ? normalizeSelection(out, sel.primIndex) : sel
-	}
-
-	function skipAtomicInner(doc, pos, oldPos, dir, mayClear) {
-	  var line = getLine(doc, pos.line)
-	  if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) {
-	    var sp = line.markedSpans[i], m = sp.marker
-	    if ((sp.from == null || (m.inclusiveLeft ? sp.from <= pos.ch : sp.from < pos.ch)) &&
-	        (sp.to == null || (m.inclusiveRight ? sp.to >= pos.ch : sp.to > pos.ch))) {
-	      if (mayClear) {
-	        signal(m, "beforeCursorEnter")
-	        if (m.explicitlyCleared) {
-	          if (!line.markedSpans) { break }
-	          else {--i; continue}
-	        }
-	      }
-	      if (!m.atomic) { continue }
-
-	      if (oldPos) {
-	        var near = m.find(dir < 0 ? 1 : -1), diff = (void 0)
-	        if (dir < 0 ? m.inclusiveRight : m.inclusiveLeft)
-	          { near = movePos(doc, near, -dir, near && near.line == pos.line ? line : null) }
-	        if (near && near.line == pos.line && (diff = cmp(near, oldPos)) && (dir < 0 ? diff < 0 : diff > 0))
-	          { return skipAtomicInner(doc, near, pos, dir, mayClear) }
-	      }
-
-	      var far = m.find(dir < 0 ? -1 : 1)
-	      if (dir < 0 ? m.inclusiveLeft : m.inclusiveRight)
-	        { far = movePos(doc, far, dir, far.line == pos.line ? line : null) }
-	      return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null
-	    }
-	  } }
-	  return pos
-	}
-
-	// Ensure a given position is not inside an atomic range.
-	function skipAtomic(doc, pos, oldPos, bias, mayClear) {
-	  var dir = bias || 1
-	  var found = skipAtomicInner(doc, pos, oldPos, dir, mayClear) ||
-	      (!mayClear && skipAtomicInner(doc, pos, oldPos, dir, true)) ||
-	      skipAtomicInner(doc, pos, oldPos, -dir, mayClear) ||
-	      (!mayClear && skipAtomicInner(doc, pos, oldPos, -dir, true))
-	  if (!found) {
-	    doc.cantEdit = true
-	    return Pos(doc.first, 0)
-	  }
-	  return found
-	}
-
-	function movePos(doc, pos, dir, line) {
-	  if (dir < 0 && pos.ch == 0) {
-	    if (pos.line > doc.first) { return clipPos(doc, Pos(pos.line - 1)) }
-	    else { return null }
-	  } else if (dir > 0 && pos.ch == (line || getLine(doc, pos.line)).text.length) {
-	    if (pos.line < doc.first + doc.size - 1) { return Pos(pos.line + 1, 0) }
-	    else { return null }
-	  } else {
-	    return new Pos(pos.line, pos.ch + dir)
-	  }
-	}
-
-	function selectAll(cm) {
-	  cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll)
-	}
-
-	// UPDATING
-
-	// Allow "beforeChange" event handlers to influence a change
-	function filterChange(doc, change, update) {
-	  var obj = {
-	    canceled: false,
-	    from: change.from,
-	    to: change.to,
-	    text: change.text,
-	    origin: change.origin,
-	    cancel: function () { return obj.canceled = true; }
-	  }
-	  if (update) { obj.update = function (from, to, text, origin) {
-	    if (from) { obj.from = clipPos(doc, from) }
-	    if (to) { obj.to = clipPos(doc, to) }
-	    if (text) { obj.text = text }
-	    if (origin !== undefined) { obj.origin = origin }
-	  } }
-	  signal(doc, "beforeChange", doc, obj)
-	  if (doc.cm) { signal(doc.cm, "beforeChange", doc.cm, obj) }
-
-	  if (obj.canceled) { return null }
-	  return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin}
-	}
-
-	// Apply a change to a document, and add it to the document's
-	// history, and propagating it to all linked documents.
-	function makeChange(doc, change, ignoreReadOnly) {
-	  if (doc.cm) {
-	    if (!doc.cm.curOp) { return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly) }
-	    if (doc.cm.state.suppressEdits) { return }
-	  }
-
-	  if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) {
-	    change = filterChange(doc, change, true)
-	    if (!change) { return }
-	  }
-
-	  // Possibly split or suppress the update based on the presence
-	  // of read-only spans in its range.
-	  var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to)
-	  if (split) {
-	    for (var i = split.length - 1; i >= 0; --i)
-	      { makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text, origin: change.origin}) }
-	  } else {
-	    makeChangeInner(doc, change)
-	  }
-	}
-
-	function makeChangeInner(doc, change) {
-	  if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) { return }
-	  var selAfter = computeSelAfterChange(doc, change)
-	  addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN)
-
-	  makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change))
-	  var rebased = []
-
-	  linkedDocs(doc, function (doc, sharedHist) {
-	    if (!sharedHist && indexOf(rebased, doc.history) == -1) {
-	      rebaseHist(doc.history, change)
-	      rebased.push(doc.history)
-	    }
-	    makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change))
-	  })
-	}
-
-	// Revert a change stored in a document's history.
-	function makeChangeFromHistory(doc, type, allowSelectionOnly) {
-	  var suppress = doc.cm && doc.cm.state.suppressEdits
-	  if (suppress && !allowSelectionOnly) { return }
-
-	  var hist = doc.history, event, selAfter = doc.sel
-	  var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done
-
-	  // Verify that there is a useable event (so that ctrl-z won't
-	  // needlessly clear selection events)
-	  var i = 0
-	  for (; i < source.length; i++) {
-	    event = source[i]
-	    if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)
-	      { break }
-	  }
-	  if (i == source.length) { return }
-	  hist.lastOrigin = hist.lastSelOrigin = null
-
-	  for (;;) {
-	    event = source.pop()
-	    if (event.ranges) {
-	      pushSelectionToHistory(event, dest)
-	      if (allowSelectionOnly && !event.equals(doc.sel)) {
-	        setSelection(doc, event, {clearRedo: false})
-	        return
-	      }
-	      selAfter = event
-	    } else if (suppress) {
-	      source.push(event)
-	      return
-	    } else { break }
-	  }
-
-	  // Build up a reverse change object to add to the opposite history
-	  // stack (redo when undoing, and vice versa).
-	  var antiChanges = []
-	  pushSelectionToHistory(selAfter, dest)
-	  dest.push({changes: antiChanges, generation: hist.generation})
-	  hist.generation = event.generation || ++hist.maxGeneration
-
-	  var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")
-
-	  var loop = function ( i ) {
-	    var change = event.changes[i]
-	    change.origin = type
-	    if (filter && !filterChange(doc, change, false)) {
-	      source.length = 0
-	      return {}
-	    }
-
-	    antiChanges.push(historyChangeFromChange(doc, change))
-
-	    var after = i ? computeSelAfterChange(doc, change) : lst(source)
-	    makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change))
-	    if (!i && doc.cm) { doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)}) }
-	    var rebased = []
-
-	    // Propagate to the linked documents
-	    linkedDocs(doc, function (doc, sharedHist) {
-	      if (!sharedHist && indexOf(rebased, doc.history) == -1) {
-	        rebaseHist(doc.history, change)
-	        rebased.push(doc.history)
-	      }
-	      makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change))
-	    })
-	  };
-
-	  for (var i$1 = event.changes.length - 1; i$1 >= 0; --i$1) {
-	    var returned = loop( i$1 );
-
-	    if ( returned ) return returned.v;
-	  }
-	}
-
-	// Sub-views need their line numbers shifted when text is added
-	// above or below them in the parent document.
-	function shiftDoc(doc, distance) {
-	  if (distance == 0) { return }
-	  doc.first += distance
-	  doc.sel = new Selection(map(doc.sel.ranges, function (range) { return new Range(
-	    Pos(range.anchor.line + distance, range.anchor.ch),
-	    Pos(range.head.line + distance, range.head.ch)
-	  ); }), doc.sel.primIndex)
-	  if (doc.cm) {
-	    regChange(doc.cm, doc.first, doc.first - distance, distance)
-	    for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++)
-	      { regLineChange(doc.cm, l, "gutter") }
-	  }
-	}
-
-	// More lower-level change function, handling only a single document
-	// (not linked ones).
-	function makeChangeSingleDoc(doc, change, selAfter, spans) {
-	  if (doc.cm && !doc.cm.curOp)
-	    { return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans) }
-
-	  if (change.to.line < doc.first) {
-	    shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line))
-	    return
-	  }
-	  if (change.from.line > doc.lastLine()) { return }
-
-	  // Clip the change to the size of this doc
-	  if (change.from.line < doc.first) {
-	    var shift = change.text.length - 1 - (doc.first - change.from.line)
-	    shiftDoc(doc, shift)
-	    change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),
-	              text: [lst(change.text)], origin: change.origin}
-	  }
-	  var last = doc.lastLine()
-	  if (change.to.line > last) {
-	    change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),
-	              text: [change.text[0]], origin: change.origin}
-	  }
-
-	  change.removed = getBetween(doc, change.from, change.to)
-
-	  if (!selAfter) { selAfter = computeSelAfterChange(doc, change) }
-	  if (doc.cm) { makeChangeSingleDocInEditor(doc.cm, change, spans) }
-	  else { updateDoc(doc, change, spans) }
-	  setSelectionNoUndo(doc, selAfter, sel_dontScroll)
-	}
-
-	// Handle the interaction of a change to a document with the editor
-	// that this document is part of.
-	function makeChangeSingleDocInEditor(cm, change, spans) {
-	  var doc = cm.doc, display = cm.display, from = change.from, to = change.to
-
-	  var recomputeMaxLength = false, checkWidthStart = from.line
-	  if (!cm.options.lineWrapping) {
-	    checkWidthStart = lineNo(visualLine(getLine(doc, from.line)))
-	    doc.iter(checkWidthStart, to.line + 1, function (line) {
-	      if (line == display.maxLine) {
-	        recomputeMaxLength = true
-	        return true
-	      }
-	    })
-	  }
-
-	  if (doc.sel.contains(change.from, change.to) > -1)
-	    { signalCursorActivity(cm) }
-
-	  updateDoc(doc, change, spans, estimateHeight(cm))
-
-	  if (!cm.options.lineWrapping) {
-	    doc.iter(checkWidthStart, from.line + change.text.length, function (line) {
-	      var len = lineLength(line)
-	      if (len > display.maxLineLength) {
-	        display.maxLine = line
-	        display.maxLineLength = len
-	        display.maxLineChanged = true
-	        recomputeMaxLength = false
-	      }
-	    })
-	    if (recomputeMaxLength) { cm.curOp.updateMaxLine = true }
-	  }
-
-	  retreatFrontier(doc, from.line)
-	  startWorker(cm, 400)
-
-	  var lendiff = change.text.length - (to.line - from.line) - 1
-	  // Remember that these lines changed, for updating the display
-	  if (change.full)
-	    { regChange(cm) }
-	  else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change))
-	    { regLineChange(cm, from.line, "text") }
-	  else
-	    { regChange(cm, from.line, to.line + 1, lendiff) }
-
-	  var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change")
-	  if (changeHandler || changesHandler) {
-	    var obj = {
-	      from: from, to: to,
-	      text: change.text,
-	      removed: change.removed,
-	      origin: change.origin
-	    }
-	    if (changeHandler) { signalLater(cm, "change", cm, obj) }
-	    if (changesHandler) { (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj) }
-	  }
-	  cm.display.selForContextMenu = null
-	}
-
-	function replaceRange(doc, code, from, to, origin) {
-	  if (!to) { to = from }
-	  if (cmp(to, from) < 0) { var assign;
-	    (assign = [to, from], from = assign[0], to = assign[1], assign) }
-	  if (typeof code == "string") { code = doc.splitLines(code) }
-	  makeChange(doc, {from: from, to: to, text: code, origin: origin})
-	}
-
-	// Rebasing/resetting history to deal with externally-sourced changes
-
-	function rebaseHistSelSingle(pos, from, to, diff) {
-	  if (to < pos.line) {
-	    pos.line += diff
-	  } else if (from < pos.line) {
-	    pos.line = from
-	    pos.ch = 0
-	  }
-	}
-
-	// Tries to rebase an array of history events given a change in the
-	// document. If the change touches the same lines as the event, the
-	// event, and everything 'behind' it, is discarded. If the change is
-	// before the event, the event's positions are updated. Uses a
-	// copy-on-write scheme for the positions, to avoid having to
-	// reallocate them all on every rebase, but also avoid problems with
-	// shared position objects being unsafely updated.
-	function rebaseHistArray(array, from, to, diff) {
-	  for (var i = 0; i < array.length; ++i) {
-	    var sub = array[i], ok = true
-	    if (sub.ranges) {
-	      if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true }
-	      for (var j = 0; j < sub.ranges.length; j++) {
-	        rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff)
-	        rebaseHistSelSingle(sub.ranges[j].head, from, to, diff)
-	      }
-	      continue
-	    }
-	    for (var j$1 = 0; j$1 < sub.changes.length; ++j$1) {
-	      var cur = sub.changes[j$1]
-	      if (to < cur.from.line) {
-	        cur.from = Pos(cur.from.line + diff, cur.from.ch)
-	        cur.to = Pos(cur.to.line + diff, cur.to.ch)
-	      } else if (from <= cur.to.line) {
-	        ok = false
-	        break
-	      }
-	    }
-	    if (!ok) {
-	      array.splice(0, i + 1)
-	      i = 0
-	    }
-	  }
-	}
-
-	function rebaseHist(hist, change) {
-	  var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1
-	  rebaseHistArray(hist.done, from, to, diff)
-	  rebaseHistArray(hist.undone, from, to, diff)
-	}
-
-	// Utility for applying a change to a line by handle or number,
-	// returning the number and optionally registering the line as
-	// changed.
-	function changeLine(doc, handle, changeType, op) {
-	  var no = handle, line = handle
-	  if (typeof handle == "number") { line = getLine(doc, clipLine(doc, handle)) }
-	  else { no = lineNo(handle) }
-	  if (no == null) { return null }
-	  if (op(line, no) && doc.cm) { regLineChange(doc.cm, no, changeType) }
-	  return line
-	}
-
-	// The document is represented as a BTree consisting of leaves, with
-	// chunk of lines in them, and branches, with up to ten leaves or
-	// other branch nodes below them. The top node is always a branch
-	// node, and is the document object itself (meaning it has
-	// additional methods and properties).
-	//
-	// All nodes have parent links. The tree is used both to go from
-	// line numbers to line objects, and to go from objects to numbers.
-	// It also indexes by height, and is used to convert between height
-	// and line object, and to find the total height of the document.
-	//
-	// See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html
-
-	function LeafChunk(lines) {
-	  var this$1 = this;
-
-	  this.lines = lines
-	  this.parent = null
-	  var height = 0
-	  for (var i = 0; i < lines.length; ++i) {
-	    lines[i].parent = this$1
-	    height += lines[i].height
-	  }
-	  this.height = height
-	}
-
-	LeafChunk.prototype = {
-	  chunkSize: function chunkSize() { return this.lines.length },
-
-	  // Remove the n lines at offset 'at'.
-	  removeInner: function removeInner(at, n) {
-	    var this$1 = this;
-
-	    for (var i = at, e = at + n; i < e; ++i) {
-	      var line = this$1.lines[i]
-	      this$1.height -= line.height
-	      cleanUpLine(line)
-	      signalLater(line, "delete")
-	    }
-	    this.lines.splice(at, n)
-	  },
-
-	  // Helper used to collapse a small branch into a single leaf.
-	  collapse: function collapse(lines) {
-	    lines.push.apply(lines, this.lines)
-	  },
-
-	  // Insert the given array of lines at offset 'at', count them as
-	  // having the given height.
-	  insertInner: function insertInner(at, lines, height) {
-	    var this$1 = this;
-
-	    this.height += height
-	    this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at))
-	    for (var i = 0; i < lines.length; ++i) { lines[i].parent = this$1 }
-	  },
-
-	  // Used to iterate over a part of the tree.
-	  iterN: function iterN(at, n, op) {
-	    var this$1 = this;
-
-	    for (var e = at + n; at < e; ++at)
-	      { if (op(this$1.lines[at])) { return true } }
-	  }
-	}
-
-	function BranchChunk(children) {
-	  var this$1 = this;
-
-	  this.children = children
-	  var size = 0, height = 0
-	  for (var i = 0; i < children.length; ++i) {
-	    var ch = children[i]
-	    size += ch.chunkSize(); height += ch.height
-	    ch.parent = this$1
-	  }
-	  this.size = size
-	  this.height = height
-	  this.parent = null
-	}
-
-	BranchChunk.prototype = {
-	  chunkSize: function chunkSize() { return this.size },
-
-	  removeInner: function removeInner(at, n) {
-	    var this$1 = this;
-
-	    this.size -= n
-	    for (var i = 0; i < this.children.length; ++i) {
-	      var child = this$1.children[i], sz = child.chunkSize()
-	      if (at < sz) {
-	        var rm = Math.min(n, sz - at), oldHeight = child.height
-	        child.removeInner(at, rm)
-	        this$1.height -= oldHeight - child.height
-	        if (sz == rm) { this$1.children.splice(i--, 1); child.parent = null }
-	        if ((n -= rm) == 0) { break }
-	        at = 0
-	      } else { at -= sz }
-	    }
-	    // If the result is smaller than 25 lines, ensure that it is a
-	    // single leaf node.
-	    if (this.size - n < 25 &&
-	        (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) {
-	      var lines = []
-	      this.collapse(lines)
-	      this.children = [new LeafChunk(lines)]
-	      this.children[0].parent = this
-	    }
-	  },
-
-	  collapse: function collapse(lines) {
-	    var this$1 = this;
-
-	    for (var i = 0; i < this.children.length; ++i) { this$1.children[i].collapse(lines) }
-	  },
-
-	  insertInner: function insertInner(at, lines, height) {
-	    var this$1 = this;
-
-	    this.size += lines.length
-	    this.height += height
-	    for (var i = 0; i < this.children.length; ++i) {
-	      var child = this$1.children[i], sz = child.chunkSize()
-	      if (at <= sz) {
-	        child.insertInner(at, lines, height)
-	        if (child.lines && child.lines.length > 50) {
-	          // To avoid memory thrashing when child.lines is huge (e.g. first view of a large file), it's never spliced.
-	          // Instead, small slices are taken. They're taken in order because sequential memory accesses are fastest.
-	          var remaining = child.lines.length % 25 + 25
-	          for (var pos = remaining; pos < child.lines.length;) {
-	            var leaf = new LeafChunk(child.lines.slice(pos, pos += 25))
-	            child.height -= leaf.height
-	            this$1.children.splice(++i, 0, leaf)
-	            leaf.parent = this$1
-	          }
-	          child.lines = child.lines.slice(0, remaining)
-	          this$1.maybeSpill()
-	        }
-	        break
-	      }
-	      at -= sz
-	    }
-	  },
-
-	  // When a node has grown, check whether it should be split.
-	  maybeSpill: function maybeSpill() {
-	    if (this.children.length <= 10) { return }
-	    var me = this
-	    do {
-	      var spilled = me.children.splice(me.children.length - 5, 5)
-	      var sibling = new BranchChunk(spilled)
-	      if (!me.parent) { // Become the parent node
-	        var copy = new BranchChunk(me.children)
-	        copy.parent = me
-	        me.children = [copy, sibling]
-	        me = copy
-	     } else {
-	        me.size -= sibling.size
-	        me.height -= sibling.height
-	        var myIndex = indexOf(me.parent.children, me)
-	        me.parent.children.splice(myIndex + 1, 0, sibling)
-	      }
-	      sibling.parent = me.parent
-	    } while (me.children.length > 10)
-	    me.parent.maybeSpill()
-	  },
-
-	  iterN: function iterN(at, n, op) {
-	    var this$1 = this;
-
-	    for (var i = 0; i < this.children.length; ++i) {
-	      var child = this$1.children[i], sz = child.chunkSize()
-	      if (at < sz) {
-	        var used = Math.min(n, sz - at)
-	        if (child.iterN(at, used, op)) { return true }
-	        if ((n -= used) == 0) { break }
-	        at = 0
-	      } else { at -= sz }
-	    }
-	  }
-	}
-
-	// Line widgets are block elements displayed above or below a line.
-
-	var LineWidget = function(doc, node, options) {
-	  var this$1 = this;
-
-	  if (options) { for (var opt in options) { if (options.hasOwnProperty(opt))
-	    { this$1[opt] = options[opt] } } }
-	  this.doc = doc
-	  this.node = node
-	};
-
-	LineWidget.prototype.clear = function () {
-	    var this$1 = this;
-
-	  var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line)
-	  if (no == null || !ws) { return }
-	  for (var i = 0; i < ws.length; ++i) { if (ws[i] == this$1) { ws.splice(i--, 1) } }
-	  if (!ws.length) { line.widgets = null }
-	  var height = widgetHeight(this)
-	  updateLineHeight(line, Math.max(0, line.height - height))
-	  if (cm) {
-	    runInOp(cm, function () {
-	      adjustScrollWhenAboveVisible(cm, line, -height)
-	      regLineChange(cm, no, "widget")
-	    })
-	    signalLater(cm, "lineWidgetCleared", cm, this, no)
-	  }
-	};
-
-	LineWidget.prototype.changed = function () {
-	    var this$1 = this;
-
-	  var oldH = this.height, cm = this.doc.cm, line = this.line
-	  this.height = null
-	  var diff = widgetHeight(this) - oldH
-	  if (!diff) { return }
-	  updateLineHeight(line, line.height + diff)
-	  if (cm) {
-	    runInOp(cm, function () {
-	      cm.curOp.forceUpdate = true
-	      adjustScrollWhenAboveVisible(cm, line, diff)
-	      signalLater(cm, "lineWidgetChanged", cm, this$1, lineNo(line))
-	    })
-	  }
-	};
-	eventMixin(LineWidget)
-
-	function adjustScrollWhenAboveVisible(cm, line, diff) {
-	  if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))
-	    { addToScrollTop(cm, diff) }
-	}
-
-	function addLineWidget(doc, handle, node, options) {
-	  var widget = new LineWidget(doc, node, options)
-	  var cm = doc.cm
-	  if (cm && widget.noHScroll) { cm.display.alignWidgets = true }
-	  changeLine(doc, handle, "widget", function (line) {
-	    var widgets = line.widgets || (line.widgets = [])
-	    if (widget.insertAt == null) { widgets.push(widget) }
-	    else { widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget) }
-	    widget.line = line
-	    if (cm && !lineIsHidden(doc, line)) {
-	      var aboveVisible = heightAtLine(line) < doc.scrollTop
-	      updateLineHeight(line, line.height + widgetHeight(widget))
-	      if (aboveVisible) { addToScrollTop(cm, widget.height) }
-	      cm.curOp.forceUpdate = true
-	    }
-	    return true
-	  })
-	  if (cm) { signalLater(cm, "lineWidgetAdded", cm, widget, typeof handle == "number" ? handle : lineNo(handle)) }
-	  return widget
-	}
-
-	// TEXTMARKERS
-
-	// Created with markText and setBookmark methods. A TextMarker is a
-	// handle that can be used to clear or find a marked position in the
-	// document. Line objects hold arrays (markedSpans) containing
-	// {from, to, marker} object pointing to such marker objects, and
-	// indicating that such a marker is present on that line. Multiple
-	// lines may point to the same marker when it spans across lines.
-	// The spans will have null for their from/to properties when the
-	// marker continues beyond the start/end of the line. Markers have
-	// links back to the lines they currently touch.
-
-	// Collapsed markers have unique ids, in order to be able to order
-	// them, which is needed for uniquely determining an outer marker
-	// when they overlap (they may nest, but not partially overlap).
-	var nextMarkerId = 0
-
-	var TextMarker = function(doc, type) {
-	  this.lines = []
-	  this.type = type
-	  this.doc = doc
-	  this.id = ++nextMarkerId
-	};
-
-	// Clear the marker.
-	TextMarker.prototype.clear = function () {
-	    var this$1 = this;
-
-	  if (this.explicitlyCleared) { return }
-	  var cm = this.doc.cm, withOp = cm && !cm.curOp
-	  if (withOp) { startOperation(cm) }
-	  if (hasHandler(this, "clear")) {
-	    var found = this.find()
-	    if (found) { signalLater(this, "clear", found.from, found.to) }
-	  }
-	  var min = null, max = null
-	  for (var i = 0; i < this.lines.length; ++i) {
-	    var line = this$1.lines[i]
-	    var span = getMarkedSpanFor(line.markedSpans, this$1)
-	    if (cm && !this$1.collapsed) { regLineChange(cm, lineNo(line), "text") }
-	    else if (cm) {
-	      if (span.to != null) { max = lineNo(line) }
-	      if (span.from != null) { min = lineNo(line) }
-	    }
-	    line.markedSpans = removeMarkedSpan(line.markedSpans, span)
-	    if (span.from == null && this$1.collapsed && !lineIsHidden(this$1.doc, line) && cm)
-	      { updateLineHeight(line, textHeight(cm.display)) }
-	  }
-	  if (cm && this.collapsed && !cm.options.lineWrapping) { for (var i$1 = 0; i$1 < this.lines.length; ++i$1) {
-	    var visual = visualLine(this$1.lines[i$1]), len = lineLength(visual)
-	    if (len > cm.display.maxLineLength) {
-	      cm.display.maxLine = visual
-	      cm.display.maxLineLength = len
-	      cm.display.maxLineChanged = true
-	    }
-	  } }
-
-	  if (min != null && cm && this.collapsed) { regChange(cm, min, max + 1) }
-	  this.lines.length = 0
-	  this.explicitlyCleared = true
-	  if (this.atomic && this.doc.cantEdit) {
-	    this.doc.cantEdit = false
-	    if (cm) { reCheckSelection(cm.doc) }
-	  }
-	  if (cm) { signalLater(cm, "markerCleared", cm, this, min, max) }
-	  if (withOp) { endOperation(cm) }
-	  if (this.parent) { this.parent.clear() }
-	};
-
-	// Find the position of the marker in the document. Returns a {from,
-	// to} object by default. Side can be passed to get a specific side
-	// -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the
-	// Pos objects returned contain a line object, rather than a line
-	// number (used to prevent looking up the same line twice).
-	TextMarker.prototype.find = function (side, lineObj) {
-	    var this$1 = this;
-
-	  if (side == null && this.type == "bookmark") { side = 1 }
-	  var from, to
-	  for (var i = 0; i < this.lines.length; ++i) {
-	    var line = this$1.lines[i]
-	    var span = getMarkedSpanFor(line.markedSpans, this$1)
-	    if (span.from != null) {
-	      from = Pos(lineObj ? line : lineNo(line), span.from)
-	      if (side == -1) { return from }
-	    }
-	    if (span.to != null) {
-	      to = Pos(lineObj ? line : lineNo(line), span.to)
-	      if (side == 1) { return to }
-	    }
-	  }
-	  return from && {from: from, to: to}
-	};
-
-	// Signals that the marker's widget changed, and surrounding layout
-	// should be recomputed.
-	TextMarker.prototype.changed = function () {
-	    var this$1 = this;
-
-	  var pos = this.find(-1, true), widget = this, cm = this.doc.cm
-	  if (!pos || !cm) { return }
-	  runInOp(cm, function () {
-	    var line = pos.line, lineN = lineNo(pos.line)
-	    var view = findViewForLine(cm, lineN)
-	    if (view) {
-	      clearLineMeasurementCacheFor(view)
-	      cm.curOp.selectionChanged = cm.curOp.forceUpdate = true
-	    }
-	    cm.curOp.updateMaxLine = true
-	    if (!lineIsHidden(widget.doc, line) && widget.height != null) {
-	      var oldHeight = widget.height
-	      widget.height = null
-	      var dHeight = widgetHeight(widget) - oldHeight
-	      if (dHeight)
-	        { updateLineHeight(line, line.height + dHeight) }
-	    }
-	    signalLater(cm, "markerChanged", cm, this$1)
-	  })
-	};
-
-	TextMarker.prototype.attachLine = function (line) {
-	  if (!this.lines.length && this.doc.cm) {
-	    var op = this.doc.cm.curOp
-	    if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)
-	      { (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this) }
-	  }
-	  this.lines.push(line)
-	};
-
-	TextMarker.prototype.detachLine = function (line) {
-	  this.lines.splice(indexOf(this.lines, line), 1)
-	  if (!this.lines.length && this.doc.cm) {
-	    var op = this.doc.cm.curOp
-	    ;(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this)
-	  }
-	};
-	eventMixin(TextMarker)
-
-	// Create a marker, wire it up to the right lines, and
-	function markText(doc, from, to, options, type) {
-	  // Shared markers (across linked documents) are handled separately
-	  // (markTextShared will call out to this again, once per
-	  // document).
-	  if (options && options.shared) { return markTextShared(doc, from, to, options, type) }
-	  // Ensure we are in an operation.
-	  if (doc.cm && !doc.cm.curOp) { return operation(doc.cm, markText)(doc, from, to, options, type) }
-
-	  var marker = new TextMarker(doc, type), diff = cmp(from, to)
-	  if (options) { copyObj(options, marker, false) }
-	  // Don't connect empty markers unless clearWhenEmpty is false
-	  if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false)
-	    { return marker }
-	  if (marker.replacedWith) {
-	    // Showing up as a widget implies collapsed (widget replaces text)
-	    marker.collapsed = true
-	    marker.widgetNode = eltP("span", [marker.replacedWith], "CodeMirror-widget")
-	    if (!options.handleMouseEvents) { marker.widgetNode.setAttribute("cm-ignore-events", "true") }
-	    if (options.insertLeft) { marker.widgetNode.insertLeft = true }
-	  }
-	  if (marker.collapsed) {
-	    if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||
-	        from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))
-	      { throw new Error("Inserting collapsed marker partially overlapping an existing one") }
-	    seeCollapsedSpans()
-	  }
-
-	  if (marker.addToHistory)
-	    { addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN) }
-
-	  var curLine = from.line, cm = doc.cm, updateMaxLine
-	  doc.iter(curLine, to.line + 1, function (line) {
-	    if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)
-	      { updateMaxLine = true }
-	    if (marker.collapsed && curLine != from.line) { updateLineHeight(line, 0) }
-	    addMarkedSpan(line, new MarkedSpan(marker,
-	                                       curLine == from.line ? from.ch : null,
-	                                       curLine == to.line ? to.ch : null))
-	    ++curLine
-	  })
-	  // lineIsHidden depends on the presence of the spans, so needs a second pass
-	  if (marker.collapsed) { doc.iter(from.line, to.line + 1, function (line) {
-	    if (lineIsHidden(doc, line)) { updateLineHeight(line, 0) }
-	  }) }
-
-	  if (marker.clearOnEnter) { on(marker, "beforeCursorEnter", function () { return marker.clear(); }) }
-
-	  if (marker.readOnly) {
-	    seeReadOnlySpans()
-	    if (doc.history.done.length || doc.history.undone.length)
-	      { doc.clearHistory() }
-	  }
-	  if (marker.collapsed) {
-	    marker.id = ++nextMarkerId
-	    marker.atomic = true
-	  }
-	  if (cm) {
-	    // Sync editor state
-	    if (updateMaxLine) { cm.curOp.updateMaxLine = true }
-	    if (marker.collapsed)
-	      { regChange(cm, from.line, to.line + 1) }
-	    else if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.css)
-	      { for (var i = from.line; i <= to.line; i++) { regLineChange(cm, i, "text") } }
-	    if (marker.atomic) { reCheckSelection(cm.doc) }
-	    signalLater(cm, "markerAdded", cm, marker)
-	  }
-	  return marker
-	}
-
-	// SHARED TEXTMARKERS
-
-	// A shared marker spans multiple linked documents. It is
-	// implemented as a meta-marker-object controlling multiple normal
-	// markers.
-	var SharedTextMarker = function(markers, primary) {
-	  var this$1 = this;
-
-	  this.markers = markers
-	  this.primary = primary
-	  for (var i = 0; i < markers.length; ++i)
-	    { markers[i].parent = this$1 }
-	};
-
-	SharedTextMarker.prototype.clear = function () {
-	    var this$1 = this;
-
-	  if (this.explicitlyCleared) { return }
-	  this.explicitlyCleared = true
-	  for (var i = 0; i < this.markers.length; ++i)
-	    { this$1.markers[i].clear() }
-	  signalLater(this, "clear")
-	};
-
-	SharedTextMarker.prototype.find = function (side, lineObj) {
-	  return this.primary.find(side, lineObj)
-	};
-	eventMixin(SharedTextMarker)
-
-	function markTextShared(doc, from, to, options, type) {
-	  options = copyObj(options)
-	  options.shared = false
-	  var markers = [markText(doc, from, to, options, type)], primary = markers[0]
-	  var widget = options.widgetNode
-	  linkedDocs(doc, function (doc) {
-	    if (widget) { options.widgetNode = widget.cloneNode(true) }
-	    markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type))
-	    for (var i = 0; i < doc.linked.length; ++i)
-	      { if (doc.linked[i].isParent) { return } }
-	    primary = lst(markers)
-	  })
-	  return new SharedTextMarker(markers, primary)
-	}
-
-	function findSharedMarkers(doc) {
-	  return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), function (m) { return m.parent; })
-	}
-
-	function copySharedMarkers(doc, markers) {
-	  for (var i = 0; i < markers.length; i++) {
-	    var marker = markers[i], pos = marker.find()
-	    var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to)
-	    if (cmp(mFrom, mTo)) {
-	      var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type)
-	      marker.markers.push(subMark)
-	      subMark.parent = marker
-	    }
-	  }
-	}
-
-	function detachSharedMarkers(markers) {
-	  var loop = function ( i ) {
-	    var marker = markers[i], linked = [marker.primary.doc]
-	    linkedDocs(marker.primary.doc, function (d) { return linked.push(d); })
-	    for (var j = 0; j < marker.markers.length; j++) {
-	      var subMarker = marker.markers[j]
-	      if (indexOf(linked, subMarker.doc) == -1) {
-	        subMarker.parent = null
-	        marker.markers.splice(j--, 1)
-	      }
-	    }
-	  };
-
-	  for (var i = 0; i < markers.length; i++) loop( i );
-	}
-
-	var nextDocId = 0
-	var Doc = function(text, mode, firstLine, lineSep, direction) {
-	  if (!(this instanceof Doc)) { return new Doc(text, mode, firstLine, lineSep, direction) }
-	  if (firstLine == null) { firstLine = 0 }
-
-	  BranchChunk.call(this, [new LeafChunk([new Line("", null)])])
-	  this.first = firstLine
-	  this.scrollTop = this.scrollLeft = 0
-	  this.cantEdit = false
-	  this.cleanGeneration = 1
-	  this.modeFrontier = this.highlightFrontier = firstLine
-	  var start = Pos(firstLine, 0)
-	  this.sel = simpleSelection(start)
-	  this.history = new History(null)
-	  this.id = ++nextDocId
-	  this.modeOption = mode
-	  this.lineSep = lineSep
-	  this.direction = (direction == "rtl") ? "rtl" : "ltr"
-	  this.extend = false
-
-	  if (typeof text == "string") { text = this.splitLines(text) }
-	  updateDoc(this, {from: start, to: start, text: text})
-	  setSelection(this, simpleSelection(start), sel_dontScroll)
-	}
-
-	Doc.prototype = createObj(BranchChunk.prototype, {
-	  constructor: Doc,
-	  // Iterate over the document. Supports two forms -- with only one
-	  // argument, it calls that for each line in the document. With
-	  // three, it iterates over the range given by the first two (with
-	  // the second being non-inclusive).
-	  iter: function(from, to, op) {
-	    if (op) { this.iterN(from - this.first, to - from, op) }
-	    else { this.iterN(this.first, this.first + this.size, from) }
-	  },
-
-	  // Non-public interface for adding and removing lines.
-	  insert: function(at, lines) {
-	    var height = 0
-	    for (var i = 0; i < lines.length; ++i) { height += lines[i].height }
-	    this.insertInner(at - this.first, lines, height)
-	  },
-	  remove: function(at, n) { this.removeInner(at - this.first, n) },
-
-	  // From here, the methods are part of the public interface. Most
-	  // are also available from CodeMirror (editor) instances.
-
-	  getValue: function(lineSep) {
-	    var lines = getLines(this, this.first, this.first + this.size)
-	    if (lineSep === false) { return lines }
-	    return lines.join(lineSep || this.lineSeparator())
-	  },
-	  setValue: docMethodOp(function(code) {
-	    var top = Pos(this.first, 0), last = this.first + this.size - 1
-	    makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),
-	                      text: this.splitLines(code), origin: "setValue", full: true}, true)
-	    if (this.cm) { scrollToCoords(this.cm, 0, 0) }
-	    setSelection(this, simpleSelection(top), sel_dontScroll)
-	  }),
-	  replaceRange: function(code, from, to, origin) {
-	    from = clipPos(this, from)
-	    to = to ? clipPos(this, to) : from
-	    replaceRange(this, code, from, to, origin)
-	  },
-	  getRange: function(from, to, lineSep) {
-	    var lines = getBetween(this, clipPos(this, from), clipPos(this, to))
-	    if (lineSep === false) { return lines }
-	    return lines.join(lineSep || this.lineSeparator())
-	  },
-
-	  getLine: function(line) {var l = this.getLineHandle(line); return l && l.text},
-
-	  getLineHandle: function(line) {if (isLine(this, line)) { return getLine(this, line) }},
-	  getLineNumber: function(line) {return lineNo(line)},
-
-	  getLineHandleVisualStart: function(line) {
-	    if (typeof line == "number") { line = getLine(this, line) }
-	    return visualLine(line)
-	  },
-
-	  lineCount: function() {return this.size},
-	  firstLine: function() {return this.first},
-	  lastLine: function() {return this.first + this.size - 1},
-
-	  clipPos: function(pos) {return clipPos(this, pos)},
-
-	  getCursor: function(start) {
-	    var range = this.sel.primary(), pos
-	    if (start == null || start == "head") { pos = range.head }
-	    else if (start == "anchor") { pos = range.anchor }
-	    else if (start == "end" || start == "to" || start === false) { pos = range.to() }
-	    else { pos = range.from() }
-	    return pos
-	  },
-	  listSelections: function() { return this.sel.ranges },
-	  somethingSelected: function() {return this.sel.somethingSelected()},
-
-	  setCursor: docMethodOp(function(line, ch, options) {
-	    setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options)
-	  }),
-	  setSelection: docMethodOp(function(anchor, head, options) {
-	    setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options)
-	  }),
-	  extendSelection: docMethodOp(function(head, other, options) {
-	    extendSelection(this, clipPos(this, head), other && clipPos(this, other), options)
-	  }),
-	  extendSelections: docMethodOp(function(heads, options) {
-	    extendSelections(this, clipPosArray(this, heads), options)
-	  }),
-	  extendSelectionsBy: docMethodOp(function(f, options) {
-	    var heads = map(this.sel.ranges, f)
-	    extendSelections(this, clipPosArray(this, heads), options)
-	  }),
-	  setSelections: docMethodOp(function(ranges, primary, options) {
-	    var this$1 = this;
-
-	    if (!ranges.length) { return }
-	    var out = []
-	    for (var i = 0; i < ranges.length; i++)
-	      { out[i] = new Range(clipPos(this$1, ranges[i].anchor),
-	                         clipPos(this$1, ranges[i].head)) }
-	    if (primary == null) { primary = Math.min(ranges.length - 1, this.sel.primIndex) }
-	    setSelection(this, normalizeSelection(out, primary), options)
-	  }),
-	  addSelection: docMethodOp(function(anchor, head, options) {
-	    var ranges = this.sel.ranges.slice(0)
-	    ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)))
-	    setSelection(this, normalizeSelection(ranges, ranges.length - 1), options)
-	  }),
-
-	  getSelection: function(lineSep) {
-	    var this$1 = this;
-
-	    var ranges = this.sel.ranges, lines
-	    for (var i = 0; i < ranges.length; i++) {
-	      var sel = getBetween(this$1, ranges[i].from(), ranges[i].to())
-	      lines = lines ? lines.concat(sel) : sel
-	    }
-	    if (lineSep === false) { return lines }
-	    else { return lines.join(lineSep || this.lineSeparator()) }
-	  },
-	  getSelections: function(lineSep) {
-	    var this$1 = this;
-
-	    var parts = [], ranges = this.sel.ranges
-	    for (var i = 0; i < ranges.length; i++) {
-	      var sel = getBetween(this$1, ranges[i].from(), ranges[i].to())
-	      if (lineSep !== false) { sel = sel.join(lineSep || this$1.lineSeparator()) }
-	      parts[i] = sel
-	    }
-	    return parts
-	  },
-	  replaceSelection: function(code, collapse, origin) {
-	    var dup = []
-	    for (var i = 0; i < this.sel.ranges.length; i++)
-	      { dup[i] = code }
-	    this.replaceSelections(dup, collapse, origin || "+input")
-	  },
-	  replaceSelections: docMethodOp(function(code, collapse, origin) {
-	    var this$1 = this;
-
-	    var changes = [], sel = this.sel
-	    for (var i = 0; i < sel.ranges.length; i++) {
-	      var range = sel.ranges[i]
-	      changes[i] = {from: range.from(), to: range.to(), text: this$1.splitLines(code[i]), origin: origin}
-	    }
-	    var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse)
-	    for (var i$1 = changes.length - 1; i$1 >= 0; i$1--)
-	      { makeChange(this$1, changes[i$1]) }
-	    if (newSel) { setSelectionReplaceHistory(this, newSel) }
-	    else if (this.cm) { ensureCursorVisible(this.cm) }
-	  }),
-	  undo: docMethodOp(function() {makeChangeFromHistory(this, "undo")}),
-	  redo: docMethodOp(function() {makeChangeFromHistory(this, "redo")}),
-	  undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true)}),
-	  redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true)}),
-
-	  setExtending: function(val) {this.extend = val},
-	  getExtending: function() {return this.extend},
-
-	  historySize: function() {
-	    var hist = this.history, done = 0, undone = 0
-	    for (var i = 0; i < hist.done.length; i++) { if (!hist.done[i].ranges) { ++done } }
-	    for (var i$1 = 0; i$1 < hist.undone.length; i$1++) { if (!hist.undone[i$1].ranges) { ++undone } }
-	    return {undo: done, redo: undone}
-	  },
-	  clearHistory: function() {this.history = new History(this.history.maxGeneration)},
-
-	  markClean: function() {
-	    this.cleanGeneration = this.changeGeneration(true)
-	  },
-	  changeGeneration: function(forceSplit) {
-	    if (forceSplit)
-	      { this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null }
-	    return this.history.generation
-	  },
-	  isClean: function (gen) {
-	    return this.history.generation == (gen || this.cleanGeneration)
-	  },
-
-	  getHistory: function() {
-	    return {done: copyHistoryArray(this.history.done),
-	            undone: copyHistoryArray(this.history.undone)}
-	  },
-	  setHistory: function(histData) {
-	    var hist = this.history = new History(this.history.maxGeneration)
-	    hist.done = copyHistoryArray(histData.done.slice(0), null, true)
-	    hist.undone = copyHistoryArray(histData.undone.slice(0), null, true)
-	  },
-
-	  setGutterMarker: docMethodOp(function(line, gutterID, value) {
-	    return changeLine(this, line, "gutter", function (line) {
-	      var markers = line.gutterMarkers || (line.gutterMarkers = {})
-	      markers[gutterID] = value
-	      if (!value && isEmpty(markers)) { line.gutterMarkers = null }
-	      return true
-	    })
-	  }),
-
-	  clearGutter: docMethodOp(function(gutterID) {
-	    var this$1 = this;
-
-	    this.iter(function (line) {
-	      if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
-	        changeLine(this$1, line, "gutter", function () {
-	          line.gutterMarkers[gutterID] = null
-	          if (isEmpty(line.gutterMarkers)) { line.gutterMarkers = null }
-	          return true
-	        })
-	      }
-	    })
-	  }),
-
-	  lineInfo: function(line) {
-	    var n
-	    if (typeof line == "number") {
-	      if (!isLine(this, line)) { return null }
-	      n = line
-	      line = getLine(this, line)
-	      if (!line) { return null }
-	    } else {
-	      n = lineNo(line)
-	      if (n == null) { return null }
-	    }
-	    return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
-	            textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
-	            widgets: line.widgets}
-	  },
-
-	  addLineClass: docMethodOp(function(handle, where, cls) {
-	    return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) {
-	      var prop = where == "text" ? "textClass"
-	               : where == "background" ? "bgClass"
-	               : where == "gutter" ? "gutterClass" : "wrapClass"
-	      if (!line[prop]) { line[prop] = cls }
-	      else if (classTest(cls).test(line[prop])) { return false }
-	      else { line[prop] += " " + cls }
-	      return true
-	    })
-	  }),
-	  removeLineClass: docMethodOp(function(handle, where, cls) {
-	    return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) {
-	      var prop = where == "text" ? "textClass"
-	               : where == "background" ? "bgClass"
-	               : where == "gutter" ? "gutterClass" : "wrapClass"
-	      var cur = line[prop]
-	      if (!cur) { return false }
-	      else if (cls == null) { line[prop] = null }
-	      else {
-	        var found = cur.match(classTest(cls))
-	        if (!found) { return false }
-	        var end = found.index + found[0].length
-	        line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null
-	      }
-	      return true
-	    })
-	  }),
-
-	  addLineWidget: docMethodOp(function(handle, node, options) {
-	    return addLineWidget(this, handle, node, options)
-	  }),
-	  removeLineWidget: function(widget) { widget.clear() },
-
-	  markText: function(from, to, options) {
-	    return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type || "range")
-	  },
-	  setBookmark: function(pos, options) {
-	    var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),
-	                    insertLeft: options && options.insertLeft,
-	                    clearWhenEmpty: false, shared: options && options.shared,
-	                    handleMouseEvents: options && options.handleMouseEvents}
-	    pos = clipPos(this, pos)
-	    return markText(this, pos, pos, realOpts, "bookmark")
-	  },
-	  findMarksAt: function(pos) {
-	    pos = clipPos(this, pos)
-	    var markers = [], spans = getLine(this, pos.line).markedSpans
-	    if (spans) { for (var i = 0; i < spans.length; ++i) {
-	      var span = spans[i]
-	      if ((span.from == null || span.from <= pos.ch) &&
-	          (span.to == null || span.to >= pos.ch))
-	        { markers.push(span.marker.parent || span.marker) }
-	    } }
-	    return markers
-	  },
-	  findMarks: function(from, to, filter) {
-	    from = clipPos(this, from); to = clipPos(this, to)
-	    var found = [], lineNo = from.line
-	    this.iter(from.line, to.line + 1, function (line) {
-	      var spans = line.markedSpans
-	      if (spans) { for (var i = 0; i < spans.length; i++) {
-	        var span = spans[i]
-	        if (!(span.to != null && lineNo == from.line && from.ch >= span.to ||
-	              span.from == null && lineNo != from.line ||
-	              span.from != null && lineNo == to.line && span.from >= to.ch) &&
-	            (!filter || filter(span.marker)))
-	          { found.push(span.marker.parent || span.marker) }
-	      } }
-	      ++lineNo
-	    })
-	    return found
-	  },
-	  getAllMarks: function() {
-	    var markers = []
-	    this.iter(function (line) {
-	      var sps = line.markedSpans
-	      if (sps) { for (var i = 0; i < sps.length; ++i)
-	        { if (sps[i].from != null) { markers.push(sps[i].marker) } } }
-	    })
-	    return markers
-	  },
-
-	  posFromIndex: function(off) {
-	    var ch, lineNo = this.first, sepSize = this.lineSeparator().length
-	    this.iter(function (line) {
-	      var sz = line.text.length + sepSize
-	      if (sz > off) { ch = off; return true }
-	      off -= sz
-	      ++lineNo
-	    })
-	    return clipPos(this, Pos(lineNo, ch))
-	  },
-	  indexFromPos: function (coords) {
-	    coords = clipPos(this, coords)
-	    var index = coords.ch
-	    if (coords.line < this.first || coords.ch < 0) { return 0 }
-	    var sepSize = this.lineSeparator().length
-	    this.iter(this.first, coords.line, function (line) { // iter aborts when callback returns a truthy value
-	      index += line.text.length + sepSize
-	    })
-	    return index
-	  },
-
-	  copy: function(copyHistory) {
-	    var doc = new Doc(getLines(this, this.first, this.first + this.size),
-	                      this.modeOption, this.first, this.lineSep, this.direction)
-	    doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft
-	    doc.sel = this.sel
-	    doc.extend = false
-	    if (copyHistory) {
-	      doc.history.undoDepth = this.history.undoDepth
-	      doc.setHistory(this.getHistory())
-	    }
-	    return doc
-	  },
-
-	  linkedDoc: function(options) {
-	    if (!options) { options = {} }
-	    var from = this.first, to = this.first + this.size
-	    if (options.from != null && options.from > from) { from = options.from }
-	    if (options.to != null && options.to < to) { to = options.to }
-	    var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep, this.direction)
-	    if (options.sharedHist) { copy.history = this.history
-	    ; }(this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist})
-	    copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}]
-	    copySharedMarkers(copy, findSharedMarkers(this))
-	    return copy
-	  },
-	  unlinkDoc: function(other) {
-	    var this$1 = this;
-
-	    if (other instanceof CodeMirror) { other = other.doc }
-	    if (this.linked) { for (var i = 0; i < this.linked.length; ++i) {
-	      var link = this$1.linked[i]
-	      if (link.doc != other) { continue }
-	      this$1.linked.splice(i, 1)
-	      other.unlinkDoc(this$1)
-	      detachSharedMarkers(findSharedMarkers(this$1))
-	      break
-	    } }
-	    // If the histories were shared, split them again
-	    if (other.history == this.history) {
-	      var splitIds = [other.id]
-	      linkedDocs(other, function (doc) { return splitIds.push(doc.id); }, true)
-	      other.history = new History(null)
-	      other.history.done = copyHistoryArray(this.history.done, splitIds)
-	      other.history.undone = copyHistoryArray(this.history.undone, splitIds)
-	    }
-	  },
-	  iterLinkedDocs: function(f) {linkedDocs(this, f)},
-
-	  getMode: function() {return this.mode},
-	  getEditor: function() {return this.cm},
-
-	  splitLines: function(str) {
-	    if (this.lineSep) { return str.split(this.lineSep) }
-	    return splitLinesAuto(str)
-	  },
-	  lineSeparator: function() { return this.lineSep || "\n" },
-
-	  setDirection: docMethodOp(function (dir) {
-	    if (dir != "rtl") { dir = "ltr" }
-	    if (dir == this.direction) { return }
-	    this.direction = dir
-	    this.iter(function (line) { return line.order = null; })
-	    if (this.cm) { directionChanged(this.cm) }
-	  })
-	})
-
-	// Public alias.
-	Doc.prototype.eachLine = Doc.prototype.iter
-
-	// Kludge to work around strange IE behavior where it'll sometimes
-	// re-fire a series of drag-related events right after the drop (#1551)
-	var lastDrop = 0
-
-	function onDrop(e) {
-	  var cm = this
-	  clearDragCursor(cm)
-	  if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e))
-	    { return }
-	  e_preventDefault(e)
-	  if (ie) { lastDrop = +new Date }
-	  var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files
-	  if (!pos || cm.isReadOnly()) { return }
-	  // Might be a file drop, in which case we simply extract the text
-	  // and insert it.
-	  if (files && files.length && window.FileReader && window.File) {
-	    var n = files.length, text = Array(n), read = 0
-	    var loadFile = function (file, i) {
-	      if (cm.options.allowDropFileTypes &&
-	          indexOf(cm.options.allowDropFileTypes, file.type) == -1)
-	        { return }
-
-	      var reader = new FileReader
-	      reader.onload = operation(cm, function () {
-	        var content = reader.result
-	        if (/[\x00-\x08\x0e-\x1f]{2}/.test(content)) { content = "" }
-	        text[i] = content
-	        if (++read == n) {
-	          pos = clipPos(cm.doc, pos)
-	          var change = {from: pos, to: pos,
-	                        text: cm.doc.splitLines(text.join(cm.doc.lineSeparator())),
-	                        origin: "paste"}
-	          makeChange(cm.doc, change)
-	          setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change)))
-	        }
-	      })
-	      reader.readAsText(file)
-	    }
-	    for (var i = 0; i < n; ++i) { loadFile(files[i], i) }
-	  } else { // Normal drop
-	    // Don't do a replace if the drop happened inside of the selected text.
-	    if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {
-	      cm.state.draggingText(e)
-	      // Ensure the editor is re-focused
-	      setTimeout(function () { return cm.display.input.focus(); }, 20)
-	      return
-	    }
-	    try {
-	      var text$1 = e.dataTransfer.getData("Text")
-	      if (text$1) {
-	        var selected
-	        if (cm.state.draggingText && !cm.state.draggingText.copy)
-	          { selected = cm.listSelections() }
-	        setSelectionNoUndo(cm.doc, simpleSelection(pos, pos))
-	        if (selected) { for (var i$1 = 0; i$1 < selected.length; ++i$1)
-	          { replaceRange(cm.doc, "", selected[i$1].anchor, selected[i$1].head, "drag") } }
-	        cm.replaceSelection(text$1, "around", "paste")
-	        cm.display.input.focus()
-	      }
-	    }
-	    catch(e){}
-	  }
-	}
-
-	function onDragStart(cm, e) {
-	  if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return }
-	  if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) { return }
-
-	  e.dataTransfer.setData("Text", cm.getSelection())
-	  e.dataTransfer.effectAllowed = "copyMove"
-
-	  // Use dummy image instead of default browsers image.
-	  // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.
-	  if (e.dataTransfer.setDragImage && !safari) {
-	    var img = elt("img", null, null, "position: fixed; left: 0; top: 0;")
-	    img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="
-	    if (presto) {
-	      img.width = img.height = 1
-	      cm.display.wrapper.appendChild(img)
-	      // Force a relayout, or Opera won't use our image for some obscure reason
-	      img._top = img.offsetTop
-	    }
-	    e.dataTransfer.setDragImage(img, 0, 0)
-	    if (presto) { img.parentNode.removeChild(img) }
-	  }
-	}
-
-	function onDragOver(cm, e) {
-	  var pos = posFromMouse(cm, e)
-	  if (!pos) { return }
-	  var frag = document.createDocumentFragment()
-	  drawSelectionCursor(cm, pos, frag)
-	  if (!cm.display.dragCursor) {
-	    cm.display.dragCursor = elt("div", null, "CodeMirror-cursors CodeMirror-dragcursors")
-	    cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv)
-	  }
-	  removeChildrenAndAdd(cm.display.dragCursor, frag)
-	}
-
-	function clearDragCursor(cm) {
-	  if (cm.display.dragCursor) {
-	    cm.display.lineSpace.removeChild(cm.display.dragCursor)
-	    cm.display.dragCursor = null
-	  }
-	}
-
-	// These must be handled carefully, because naively registering a
-	// handler for each editor will cause the editors to never be
-	// garbage collected.
-
-	function forEachCodeMirror(f) {
-	  if (!document.getElementsByClassName) { return }
-	  var byClass = document.getElementsByClassName("CodeMirror")
-	  for (var i = 0; i < byClass.length; i++) {
-	    var cm = byClass[i].CodeMirror
-	    if (cm) { f(cm) }
-	  }
-	}
-
-	var globalsRegistered = false
-	function ensureGlobalHandlers() {
-	  if (globalsRegistered) { return }
-	  registerGlobalHandlers()
-	  globalsRegistered = true
-	}
-	function registerGlobalHandlers() {
-	  // When the window resizes, we need to refresh active editors.
-	  var resizeTimer
-	  on(window, "resize", function () {
-	    if (resizeTimer == null) { resizeTimer = setTimeout(function () {
-	      resizeTimer = null
-	      forEachCodeMirror(onResize)
-	    }, 100) }
-	  })
-	  // When the window loses focus, we want to show the editor as blurred
-	  on(window, "blur", function () { return forEachCodeMirror(onBlur); })
-	}
-	// Called when the window resizes
-	function onResize(cm) {
-	  var d = cm.display
-	  if (d.lastWrapHeight == d.wrapper.clientHeight && d.lastWrapWidth == d.wrapper.clientWidth)
-	    { return }
-	  // Might be a text scaling operation, clear size caches.
-	  d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null
-	  d.scrollbarsClipped = false
-	  cm.setSize()
-	}
-
-	var keyNames = {
-	  3: "Pause", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
-	  19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
-	  36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
-	  46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod",
-	  106: "*", 107: "=", 109: "-", 110: ".", 111: "/", 127: "Delete", 145: "ScrollLock",
-	  173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
-	  221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete",
-	  63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"
-	}
-
-	// Number keys
-	for (var i = 0; i < 10; i++) { keyNames[i + 48] = keyNames[i + 96] = String(i) }
-	// Alphabetic keys
-	for (var i$1 = 65; i$1 <= 90; i$1++) { keyNames[i$1] = String.fromCharCode(i$1) }
-	// Function keys
-	for (var i$2 = 1; i$2 <= 12; i$2++) { keyNames[i$2 + 111] = keyNames[i$2 + 63235] = "F" + i$2 }
-
-	var keyMap = {}
-
-	keyMap.basic = {
-	  "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
-	  "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
-	  "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore",
-	  "Tab": "defaultTab", "Shift-Tab": "indentAuto",
-	  "Enter": "newlineAndIndent", "Insert": "toggleOverwrite",
-	  "Esc": "singleSelection"
-	}
-	// Note that the save and find-related commands aren't defined by
-	// default. User code or addons can define them. Unknown commands
-	// are simply ignored.
-	keyMap.pcDefault = {
-	  "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
-	  "Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown",
-	  "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
-	  "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
-	  "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
-	  "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
-	  "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection",
-	  fallthrough: "basic"
-	}
-	// Very basic readline/emacs-style bindings, which are standard on Mac.
-	keyMap.emacsy = {
-	  "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
-	  "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
-	  "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
-	  "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars",
-	  "Ctrl-O": "openLine"
-	}
-	keyMap.macDefault = {
-	  "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
-	  "Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
-	  "Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore",
-	  "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find",
-	  "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
-	  "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight",
-	  "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd",
-	  fallthrough: ["basic", "emacsy"]
-	}
-	keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault
-
-	// KEYMAP DISPATCH
-
-	function normalizeKeyName(name) {
-	  var parts = name.split(/-(?!$)/)
-	  name = parts[parts.length - 1]
-	  var alt, ctrl, shift, cmd
-	  for (var i = 0; i < parts.length - 1; i++) {
-	    var mod = parts[i]
-	    if (/^(cmd|meta|m)$/i.test(mod)) { cmd = true }
-	    else if (/^a(lt)?$/i.test(mod)) { alt = true }
-	    else if (/^(c|ctrl|control)$/i.test(mod)) { ctrl = true }
-	    else if (/^s(hift)?$/i.test(mod)) { shift = true }
-	    else { throw new Error("Unrecognized modifier name: " + mod) }
-	  }
-	  if (alt) { name = "Alt-" + name }
-	  if (ctrl) { name = "Ctrl-" + name }
-	  if (cmd) { name = "Cmd-" + name }
-	  if (shift) { name = "Shift-" + name }
-	  return name
-	}
-
-	// This is a kludge to keep keymaps mostly working as raw objects
-	// (backwards compatibility) while at the same time support features
-	// like normalization and multi-stroke key bindings. It compiles a
-	// new normalized keymap, and then updates the old object to reflect
-	// this.
-	function normalizeKeyMap(keymap) {
-	  var copy = {}
-	  for (var keyname in keymap) { if (keymap.hasOwnProperty(keyname)) {
-	    var value = keymap[keyname]
-	    if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) { continue }
-	    if (value == "...") { delete keymap[keyname]; continue }
-
-	    var keys = map(keyname.split(" "), normalizeKeyName)
-	    for (var i = 0; i < keys.length; i++) {
-	      var val = (void 0), name = (void 0)
-	      if (i == keys.length - 1) {
-	        name = keys.join(" ")
-	        val = value
-	      } else {
-	        name = keys.slice(0, i + 1).join(" ")
-	        val = "..."
-	      }
-	      var prev = copy[name]
-	      if (!prev) { copy[name] = val }
-	      else if (prev != val) { throw new Error("Inconsistent bindings for " + name) }
-	    }
-	    delete keymap[keyname]
-	  } }
-	  for (var prop in copy) { keymap[prop] = copy[prop] }
-	  return keymap
-	}
-
-	function lookupKey(key, map, handle, context) {
-	  map = getKeyMap(map)
-	  var found = map.call ? map.call(key, context) : map[key]
-	  if (found === false) { return "nothing" }
-	  if (found === "...") { return "multi" }
-	  if (found != null && handle(found)) { return "handled" }
-
-	  if (map.fallthrough) {
-	    if (Object.prototype.toString.call(map.fallthrough) != "[object Array]")
-	      { return lookupKey(key, map.fallthrough, handle, context) }
-	    for (var i = 0; i < map.fallthrough.length; i++) {
-	      var result = lookupKey(key, map.fallthrough[i], handle, context)
-	      if (result) { return result }
-	    }
-	  }
-	}
-
-	// Modifier key presses don't count as 'real' key presses for the
-	// purpose of keymap fallthrough.
-	function isModifierKey(value) {
-	  var name = typeof value == "string" ? value : keyNames[value.keyCode]
-	  return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"
-	}
-
-	function addModifierNames(name, event, noShift) {
-	  var base = name
-	  if (event.altKey && base != "Alt") { name = "Alt-" + name }
-	  if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") { name = "Ctrl-" + name }
-	  if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") { name = "Cmd-" + name }
-	  if (!noShift && event.shiftKey && base != "Shift") { name = "Shift-" + name }
-	  return name
-	}
-
-	// Look up the name of a key as indicated by an event object.
-	function keyName(event, noShift) {
-	  if (presto && event.keyCode == 34 && event["char"]) { return false }
-	  var name = keyNames[event.keyCode]
-	  if (name == null || event.altGraphKey) { return false }
-	  // Ctrl-ScrollLock has keyCode 3, same as Ctrl-Pause,
-	  // so we'll use event.code when available (Chrome 48+, FF 38+, Safari 10.1+)
-	  if (event.keyCode == 3 && event.code) { name = event.code }
-	  return addModifierNames(name, event, noShift)
-	}
-
-	function getKeyMap(val) {
-	  return typeof val == "string" ? keyMap[val] : val
-	}
-
-	// Helper for deleting text near the selection(s), used to implement
-	// backspace, delete, and similar functionality.
-	function deleteNearSelection(cm, compute) {
-	  var ranges = cm.doc.sel.ranges, kill = []
-	  // Build up a set of ranges to kill first, merging overlapping
-	  // ranges.
-	  for (var i = 0; i < ranges.length; i++) {
-	    var toKill = compute(ranges[i])
-	    while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {
-	      var replaced = kill.pop()
-	      if (cmp(replaced.from, toKill.from) < 0) {
-	        toKill.from = replaced.from
-	        break
-	      }
-	    }
-	    kill.push(toKill)
-	  }
-	  // Next, remove those actual ranges.
-	  runInOp(cm, function () {
-	    for (var i = kill.length - 1; i >= 0; i--)
-	      { replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete") }
-	    ensureCursorVisible(cm)
-	  })
-	}
-
-	function moveCharLogically(line, ch, dir) {
-	  var target = skipExtendingChars(line.text, ch + dir, dir)
-	  return target < 0 || target > line.text.length ? null : target
-	}
-
-	function moveLogically(line, start, dir) {
-	  var ch = moveCharLogically(line, start.ch, dir)
-	  return ch == null ? null : new Pos(start.line, ch, dir < 0 ? "after" : "before")
-	}
-
-	function endOfLine(visually, cm, lineObj, lineNo, dir) {
-	  if (visually) {
-	    var order = getOrder(lineObj, cm.doc.direction)
-	    if (order) {
-	      var part = dir < 0 ? lst(order) : order[0]
-	      var moveInStorageOrder = (dir < 0) == (part.level == 1)
-	      var sticky = moveInStorageOrder ? "after" : "before"
-	      var ch
-	      // With a wrapped rtl chunk (possibly spanning multiple bidi parts),
-	      // it could be that the last bidi part is not on the last visual line,
-	      // since visual lines contain content order-consecutive chunks.
-	      // Thus, in rtl, we are looking for the first (content-order) character
-	      // in the rtl chunk that is on the last line (that is, the same line
-	      // as the last (content-order) character).
-	      if (part.level > 0 || cm.doc.direction == "rtl") {
-	        var prep = prepareMeasureForLine(cm, lineObj)
-	        ch = dir < 0 ? lineObj.text.length - 1 : 0
-	        var targetTop = measureCharPrepared(cm, prep, ch).top
-	        ch = findFirst(function (ch) { return measureCharPrepared(cm, prep, ch).top == targetTop; }, (dir < 0) == (part.level == 1) ? part.from : part.to - 1, ch)
-	        if (sticky == "before") { ch = moveCharLogically(lineObj, ch, 1) }
-	      } else { ch = dir < 0 ? part.to : part.from }
-	      return new Pos(lineNo, ch, sticky)
-	    }
-	  }
-	  return new Pos(lineNo, dir < 0 ? lineObj.text.length : 0, dir < 0 ? "before" : "after")
-	}
-
-	function moveVisually(cm, line, start, dir) {
-	  var bidi = getOrder(line, cm.doc.direction)
-	  if (!bidi) { return moveLogically(line, start, dir) }
-	  if (start.ch >= line.text.length) {
-	    start.ch = line.text.length
-	    start.sticky = "before"
-	  } else if (start.ch <= 0) {
-	    start.ch = 0
-	    start.sticky = "after"
-	  }
-	  var partPos = getBidiPartAt(bidi, start.ch, start.sticky), part = bidi[partPos]
-	  if (cm.doc.direction == "ltr" && part.level % 2 == 0 && (dir > 0 ? part.to > start.ch : part.from < start.ch)) {
-	    // Case 1: We move within an ltr part in an ltr editor. Even with wrapped lines,
-	    // nothing interesting happens.
-	    return moveLogically(line, start, dir)
-	  }
-
-	  var mv = function (pos, dir) { return moveCharLogically(line, pos instanceof Pos ? pos.ch : pos, dir); }
-	  var prep
-	  var getWrappedLineExtent = function (ch) {
-	    if (!cm.options.lineWrapping) { return {begin: 0, end: line.text.length} }
-	    prep = prep || prepareMeasureForLine(cm, line)
-	    return wrappedLineExtentChar(cm, line, prep, ch)
-	  }
-	  var wrappedLineExtent = getWrappedLineExtent(start.sticky == "before" ? mv(start, -1) : start.ch)
-
-	  if (cm.doc.direction == "rtl" || part.level == 1) {
-	    var moveInStorageOrder = (part.level == 1) == (dir < 0)
-	    var ch = mv(start, moveInStorageOrder ? 1 : -1)
-	    if (ch != null && (!moveInStorageOrder ? ch >= part.from && ch >= wrappedLineExtent.begin : ch <= part.to && ch <= wrappedLineExtent.end)) {
-	      // Case 2: We move within an rtl part or in an rtl editor on the same visual line
-	      var sticky = moveInStorageOrder ? "before" : "after"
-	      return new Pos(start.line, ch, sticky)
-	    }
-	  }
-
-	  // Case 3: Could not move within this bidi part in this visual line, so leave
-	  // the current bidi part
-
-	  var searchInVisualLine = function (partPos, dir, wrappedLineExtent) {
-	    var getRes = function (ch, moveInStorageOrder) { return moveInStorageOrder
-	      ? new Pos(start.line, mv(ch, 1), "before")
-	      : new Pos(start.line, ch, "after"); }
-
-	    for (; partPos >= 0 && partPos < bidi.length; partPos += dir) {
-	      var part = bidi[partPos]
-	      var moveInStorageOrder = (dir > 0) == (part.level != 1)
-	      var ch = moveInStorageOrder ? wrappedLineExtent.begin : mv(wrappedLineExtent.end, -1)
-	      if (part.from <= ch && ch < part.to) { return getRes(ch, moveInStorageOrder) }
-	      ch = moveInStorageOrder ? part.from : mv(part.to, -1)
-	      if (wrappedLineExtent.begin <= ch && ch < wrappedLineExtent.end) { return getRes(ch, moveInStorageOrder) }
-	    }
-	  }
-
-	  // Case 3a: Look for other bidi parts on the same visual line
-	  var res = searchInVisualLine(partPos + dir, dir, wrappedLineExtent)
-	  if (res) { return res }
-
-	  // Case 3b: Look for other bidi parts on the next visual line
-	  var nextCh = dir > 0 ? wrappedLineExtent.end : mv(wrappedLineExtent.begin, -1)
-	  if (nextCh != null && !(dir > 0 && nextCh == line.text.length)) {
-	    res = searchInVisualLine(dir > 0 ? 0 : bidi.length - 1, dir, getWrappedLineExtent(nextCh))
-	    if (res) { return res }
-	  }
-
-	  // Case 4: Nowhere to move
-	  return null
-	}
-
-	// Commands are parameter-less actions that can be performed on an
-	// editor, mostly used for keybindings.
-	var commands = {
-	  selectAll: selectAll,
-	  singleSelection: function (cm) { return cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll); },
-	  killLine: function (cm) { return deleteNearSelection(cm, function (range) {
-	    if (range.empty()) {
-	      var len = getLine(cm.doc, range.head.line).text.length
-	      if (range.head.ch == len && range.head.line < cm.lastLine())
-	        { return {from: range.head, to: Pos(range.head.line + 1, 0)} }
-	      else
-	        { return {from: range.head, to: Pos(range.head.line, len)} }
-	    } else {
-	      return {from: range.from(), to: range.to()}
-	    }
-	  }); },
-	  deleteLine: function (cm) { return deleteNearSelection(cm, function (range) { return ({
-	    from: Pos(range.from().line, 0),
-	    to: clipPos(cm.doc, Pos(range.to().line + 1, 0))
-	  }); }); },
-	  delLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { return ({
-	    from: Pos(range.from().line, 0), to: range.from()
-	  }); }); },
-	  delWrappedLineLeft: function (cm) { return deleteNearSelection(cm, function (range) {
-	    var top = cm.charCoords(range.head, "div").top + 5
-	    var leftPos = cm.coordsChar({left: 0, top: top}, "div")
-	    return {from: leftPos, to: range.from()}
-	  }); },
-	  delWrappedLineRight: function (cm) { return deleteNearSelection(cm, function (range) {
-	    var top = cm.charCoords(range.head, "div").top + 5
-	    var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div")
-	    return {from: range.from(), to: rightPos }
-	  }); },
-	  undo: function (cm) { return cm.undo(); },
-	  redo: function (cm) { return cm.redo(); },
-	  undoSelection: function (cm) { return cm.undoSelection(); },
-	  redoSelection: function (cm) { return cm.redoSelection(); },
-	  goDocStart: function (cm) { return cm.extendSelection(Pos(cm.firstLine(), 0)); },
-	  goDocEnd: function (cm) { return cm.extendSelection(Pos(cm.lastLine())); },
-	  goLineStart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStart(cm, range.head.line); },
-	    {origin: "+move", bias: 1}
-	  ); },
-	  goLineStartSmart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStartSmart(cm, range.head); },
-	    {origin: "+move", bias: 1}
-	  ); },
-	  goLineEnd: function (cm) { return cm.extendSelectionsBy(function (range) { return lineEnd(cm, range.head.line); },
-	    {origin: "+move", bias: -1}
-	  ); },
-	  goLineRight: function (cm) { return cm.extendSelectionsBy(function (range) {
-	    var top = cm.cursorCoords(range.head, "div").top + 5
-	    return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div")
-	  }, sel_move); },
-	  goLineLeft: function (cm) { return cm.extendSelectionsBy(function (range) {
-	    var top = cm.cursorCoords(range.head, "div").top + 5
-	    return cm.coordsChar({left: 0, top: top}, "div")
-	  }, sel_move); },
-	  goLineLeftSmart: function (cm) { return cm.extendSelectionsBy(function (range) {
-	    var top = cm.cursorCoords(range.head, "div").top + 5
-	    var pos = cm.coordsChar({left: 0, top: top}, "div")
-	    if (pos.ch < cm.getLine(pos.line).search(/\S/)) { return lineStartSmart(cm, range.head) }
-	    return pos
-	  }, sel_move); },
-	  goLineUp: function (cm) { return cm.moveV(-1, "line"); },
-	  goLineDown: function (cm) { return cm.moveV(1, "line"); },
-	  goPageUp: function (cm) { return cm.moveV(-1, "page"); },
-	  goPageDown: function (cm) { return cm.moveV(1, "page"); },
-	  goCharLeft: function (cm) { return cm.moveH(-1, "char"); },
-	  goCharRight: function (cm) { return cm.moveH(1, "char"); },
-	  goColumnLeft: function (cm) { return cm.moveH(-1, "column"); },
-	  goColumnRight: function (cm) { return cm.moveH(1, "column"); },
-	  goWordLeft: function (cm) { return cm.moveH(-1, "word"); },
-	  goGroupRight: function (cm) { return cm.moveH(1, "group"); },
-	  goGroupLeft: function (cm) { return cm.moveH(-1, "group"); },
-	  goWordRight: function (cm) { return cm.moveH(1, "word"); },
-	  delCharBefore: function (cm) { return cm.deleteH(-1, "char"); },
-	  delCharAfter: function (cm) { return cm.deleteH(1, "char"); },
-	  delWordBefore: function (cm) { return cm.deleteH(-1, "word"); },
-	  delWordAfter: function (cm) { return cm.deleteH(1, "word"); },
-	  delGroupBefore: function (cm) { return cm.deleteH(-1, "group"); },
-	  delGroupAfter: function (cm) { return cm.deleteH(1, "group"); },
-	  indentAuto: function (cm) { return cm.indentSelection("smart"); },
-	  indentMore: function (cm) { return cm.indentSelection("add"); },
-	  indentLess: function (cm) { return cm.indentSelection("subtract"); },
-	  insertTab: function (cm) { return cm.replaceSelection("\t"); },
-	  insertSoftTab: function (cm) {
-	    var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize
-	    for (var i = 0; i < ranges.length; i++) {
-	      var pos = ranges[i].from()
-	      var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize)
-	      spaces.push(spaceStr(tabSize - col % tabSize))
-	    }
-	    cm.replaceSelections(spaces)
-	  },
-	  defaultTab: function (cm) {
-	    if (cm.somethingSelected()) { cm.indentSelection("add") }
-	    else { cm.execCommand("insertTab") }
-	  },
-	  // Swap the two chars left and right of each selection's head.
-	  // Move cursor behind the two swapped characters afterwards.
-	  //
-	  // Doesn't consider line feeds a character.
-	  // Doesn't scan more than one line above to find a character.
-	  // Doesn't do anything on an empty line.
-	  // Doesn't do anything with non-empty selections.
-	  transposeChars: function (cm) { return runInOp(cm, function () {
-	    var ranges = cm.listSelections(), newSel = []
-	    for (var i = 0; i < ranges.length; i++) {
-	      if (!ranges[i].empty()) { continue }
-	      var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text
-	      if (line) {
-	        if (cur.ch == line.length) { cur = new Pos(cur.line, cur.ch - 1) }
-	        if (cur.ch > 0) {
-	          cur = new Pos(cur.line, cur.ch + 1)
-	          cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2),
-	                          Pos(cur.line, cur.ch - 2), cur, "+transpose")
-	        } else if (cur.line > cm.doc.first) {
-	          var prev = getLine(cm.doc, cur.line - 1).text
-	          if (prev) {
-	            cur = new Pos(cur.line, 1)
-	            cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() +
-	                            prev.charAt(prev.length - 1),
-	                            Pos(cur.line - 1, prev.length - 1), cur, "+transpose")
-	          }
-	        }
-	      }
-	      newSel.push(new Range(cur, cur))
-	    }
-	    cm.setSelections(newSel)
-	  }); },
-	  newlineAndIndent: function (cm) { return runInOp(cm, function () {
-	    var sels = cm.listSelections()
-	    for (var i = sels.length - 1; i >= 0; i--)
-	      { cm.replaceRange(cm.doc.lineSeparator(), sels[i].anchor, sels[i].head, "+input") }
-	    sels = cm.listSelections()
-	    for (var i$1 = 0; i$1 < sels.length; i$1++)
-	      { cm.indentLine(sels[i$1].from().line, null, true) }
-	    ensureCursorVisible(cm)
-	  }); },
-	  openLine: function (cm) { return cm.replaceSelection("\n", "start"); },
-	  toggleOverwrite: function (cm) { return cm.toggleOverwrite(); }
-	}
-
-
-	function lineStart(cm, lineN) {
-	  var line = getLine(cm.doc, lineN)
-	  var visual = visualLine(line)
-	  if (visual != line) { lineN = lineNo(visual) }
-	  return endOfLine(true, cm, visual, lineN, 1)
-	}
-	function lineEnd(cm, lineN) {
-	  var line = getLine(cm.doc, lineN)
-	  var visual = visualLineEnd(line)
-	  if (visual != line) { lineN = lineNo(visual) }
-	  return endOfLine(true, cm, line, lineN, -1)
-	}
-	function lineStartSmart(cm, pos) {
-	  var start = lineStart(cm, pos.line)
-	  var line = getLine(cm.doc, start.line)
-	  var order = getOrder(line, cm.doc.direction)
-	  if (!order || order[0].level == 0) {
-	    var firstNonWS = Math.max(0, line.text.search(/\S/))
-	    var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch
-	    return Pos(start.line, inWS ? 0 : firstNonWS, start.sticky)
-	  }
-	  return start
-	}
-
-	// Run a handler that was bound to a key.
-	function doHandleBinding(cm, bound, dropShift) {
-	  if (typeof bound == "string") {
-	    bound = commands[bound]
-	    if (!bound) { return false }
-	  }
-	  // Ensure previous input has been read, so that the handler sees a
-	  // consistent view of the document
-	  cm.display.input.ensurePolled()
-	  var prevShift = cm.display.shift, done = false
-	  try {
-	    if (cm.isReadOnly()) { cm.state.suppressEdits = true }
-	    if (dropShift) { cm.display.shift = false }
-	    done = bound(cm) != Pass
-	  } finally {
-	    cm.display.shift = prevShift
-	    cm.state.suppressEdits = false
-	  }
-	  return done
-	}
-
-	function lookupKeyForEditor(cm, name, handle) {
-	  for (var i = 0; i < cm.state.keyMaps.length; i++) {
-	    var result = lookupKey(name, cm.state.keyMaps[i], handle, cm)
-	    if (result) { return result }
-	  }
-	  return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm))
-	    || lookupKey(name, cm.options.keyMap, handle, cm)
-	}
-
-	// Note that, despite the name, this function is also used to check
-	// for bound mouse clicks.
-
-	var stopSeq = new Delayed
-
-	function dispatchKey(cm, name, e, handle) {
-	  var seq = cm.state.keySeq
-	  if (seq) {
-	    if (isModifierKey(name)) { return "handled" }
-	    if (/\'$/.test(name))
-	      { cm.state.keySeq = null }
-	    else
-	      { stopSeq.set(50, function () {
-	        if (cm.state.keySeq == seq) {
-	          cm.state.keySeq = null
-	          cm.display.input.reset()
-	        }
-	      }) }
-	    if (dispatchKeyInner(cm, seq + " " + name, e, handle)) { return true }
-	  }
-	  return dispatchKeyInner(cm, name, e, handle)
-	}
-
-	function dispatchKeyInner(cm, name, e, handle) {
-	  var result = lookupKeyForEditor(cm, name, handle)
-
-	  if (result == "multi")
-	    { cm.state.keySeq = name }
-	  if (result == "handled")
-	    { signalLater(cm, "keyHandled", cm, name, e) }
-
-	  if (result == "handled" || result == "multi") {
-	    e_preventDefault(e)
-	    restartBlink(cm)
-	  }
-
-	  return !!result
-	}
-
-	// Handle a key from the keydown event.
-	function handleKeyBinding(cm, e) {
-	  var name = keyName(e, true)
-	  if (!name) { return false }
-
-	  if (e.shiftKey && !cm.state.keySeq) {
-	    // First try to resolve full name (including 'Shift-'). Failing
-	    // that, see if there is a cursor-motion command (starting with
-	    // 'go') bound to the keyname without 'Shift-'.
-	    return dispatchKey(cm, "Shift-" + name, e, function (b) { return doHandleBinding(cm, b, true); })
-	        || dispatchKey(cm, name, e, function (b) {
-	             if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion)
-	               { return doHandleBinding(cm, b) }
-	           })
-	  } else {
-	    return dispatchKey(cm, name, e, function (b) { return doHandleBinding(cm, b); })
-	  }
-	}
-
-	// Handle a key from the keypress event
-	function handleCharBinding(cm, e, ch) {
-	  return dispatchKey(cm, "'" + ch + "'", e, function (b) { return doHandleBinding(cm, b, true); })
-	}
-
-	var lastStoppedKey = null
-	function onKeyDown(e) {
-	  var cm = this
-	  cm.curOp.focus = activeElt()
-	  if (signalDOMEvent(cm, e)) { return }
-	  // IE does strange things with escape.
-	  if (ie && ie_version < 11 && e.keyCode == 27) { e.returnValue = false }
-	  var code = e.keyCode
-	  cm.display.shift = code == 16 || e.shiftKey
-	  var handled = handleKeyBinding(cm, e)
-	  if (presto) {
-	    lastStoppedKey = handled ? code : null
-	    // Opera has no cut event... we try to at least catch the key combo
-	    if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))
-	      { cm.replaceSelection("", null, "cut") }
-	  }
-
-	  // Turn mouse into crosshair when Alt is held on Mac.
-	  if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className))
-	    { showCrossHair(cm) }
-	}
-
-	function showCrossHair(cm) {
-	  var lineDiv = cm.display.lineDiv
-	  addClass(lineDiv, "CodeMirror-crosshair")
-
-	  function up(e) {
-	    if (e.keyCode == 18 || !e.altKey) {
-	      rmClass(lineDiv, "CodeMirror-crosshair")
-	      off(document, "keyup", up)
-	      off(document, "mouseover", up)
-	    }
-	  }
-	  on(document, "keyup", up)
-	  on(document, "mouseover", up)
-	}
-
-	function onKeyUp(e) {
-	  if (e.keyCode == 16) { this.doc.sel.shift = false }
-	  signalDOMEvent(this, e)
-	}
-
-	function onKeyPress(e) {
-	  var cm = this
-	  if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) { return }
-	  var keyCode = e.keyCode, charCode = e.charCode
-	  if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return}
-	  if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) { return }
-	  var ch = String.fromCharCode(charCode == null ? keyCode : charCode)
-	  // Some browsers fire keypress events for backspace
-	  if (ch == "\x08") { return }
-	  if (handleCharBinding(cm, e, ch)) { return }
-	  cm.display.input.onKeyPress(e)
-	}
-
-	var DOUBLECLICK_DELAY = 400
-
-	var PastClick = function(time, pos, button) {
-	  this.time = time
-	  this.pos = pos
-	  this.button = button
-	};
-
-	PastClick.prototype.compare = function (time, pos, button) {
-	  return this.time + DOUBLECLICK_DELAY > time &&
-	    cmp(pos, this.pos) == 0 && button == this.button
-	};
-
-	var lastClick;
-	var lastDoubleClick;
-	function clickRepeat(pos, button) {
-	  var now = +new Date
-	  if (lastDoubleClick && lastDoubleClick.compare(now, pos, button)) {
-	    lastClick = lastDoubleClick = null
-	    return "triple"
-	  } else if (lastClick && lastClick.compare(now, pos, button)) {
-	    lastDoubleClick = new PastClick(now, pos, button)
-	    lastClick = null
-	    return "double"
-	  } else {
-	    lastClick = new PastClick(now, pos, button)
-	    lastDoubleClick = null
-	    return "single"
-	  }
-	}
-
-	// A mouse down can be a single click, double click, triple click,
-	// start of selection drag, start of text drag, new cursor
-	// (ctrl-click), rectangle drag (alt-drag), or xwin
-	// middle-click-paste. Or it might be a click on something we should
-	// not interfere with, such as a scrollbar or widget.
-	function onMouseDown(e) {
-	  var cm = this, display = cm.display
-	  if (signalDOMEvent(cm, e) || display.activeTouch && display.input.supportsTouch()) { return }
-	  display.input.ensurePolled()
-	  display.shift = e.shiftKey
-
-	  if (eventInWidget(display, e)) {
-	    if (!webkit) {
-	      // Briefly turn off draggability, to allow widgets to do
-	      // normal dragging things.
-	      display.scroller.draggable = false
-	      setTimeout(function () { return display.scroller.draggable = true; }, 100)
-	    }
-	    return
-	  }
-	  if (clickInGutter(cm, e)) { return }
-	  var pos = posFromMouse(cm, e), button = e_button(e), repeat = pos ? clickRepeat(pos, button) : "single"
-	  window.focus()
-
-	  // #3261: make sure, that we're not starting a second selection
-	  if (button == 1 && cm.state.selectingText)
-	    { cm.state.selectingText(e) }
-
-	  if (pos && handleMappedButton(cm, button, pos, repeat, e)) { return }
-
-	  if (button == 1) {
-	    if (pos) { leftButtonDown(cm, pos, repeat, e) }
-	    else if (e_target(e) == display.scroller) { e_preventDefault(e) }
-	  } else if (button == 2) {
-	    if (pos) { extendSelection(cm.doc, pos) }
-	    setTimeout(function () { return display.input.focus(); }, 20)
-	  } else if (button == 3) {
-	    if (captureRightClick) { onContextMenu(cm, e) }
-	    else { delayBlurEvent(cm) }
-	  }
-	}
-
-	function handleMappedButton(cm, button, pos, repeat, event) {
-	  var name = "Click"
-	  if (repeat == "double") { name = "Double" + name }
-	  else if (repeat == "triple") { name = "Triple" + name }
-	  name = (button == 1 ? "Left" : button == 2 ? "Middle" : "Right") + name
-
-	  return dispatchKey(cm,  addModifierNames(name, event), event, function (bound) {
-	    if (typeof bound == "string") { bound = commands[bound] }
-	    if (!bound) { return false }
-	    var done = false
-	    try {
-	      if (cm.isReadOnly()) { cm.state.suppressEdits = true }
-	      done = bound(cm, pos) != Pass
-	    } finally {
-	      cm.state.suppressEdits = false
-	    }
-	    return done
-	  })
-	}
-
-	function configureMouse(cm, repeat, event) {
-	  var option = cm.getOption("configureMouse")
-	  var value = option ? option(cm, repeat, event) : {}
-	  if (value.unit == null) {
-	    var rect = chromeOS ? event.shiftKey && event.metaKey : event.altKey
-	    value.unit = rect ? "rectangle" : repeat == "single" ? "char" : repeat == "double" ? "word" : "line"
-	  }
-	  if (value.extend == null || cm.doc.extend) { value.extend = cm.doc.extend || event.shiftKey }
-	  if (value.addNew == null) { value.addNew = mac ? event.metaKey : event.ctrlKey }
-	  if (value.moveOnDrag == null) { value.moveOnDrag = !(mac ? event.altKey : event.ctrlKey) }
-	  return value
-	}
-
-	function leftButtonDown(cm, pos, repeat, event) {
-	  if (ie) { setTimeout(bind(ensureFocus, cm), 0) }
-	  else { cm.curOp.focus = activeElt() }
-
-	  var behavior = configureMouse(cm, repeat, event)
-
-	  var sel = cm.doc.sel, contained
-	  if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() &&
-	      repeat == "single" && (contained = sel.contains(pos)) > -1 &&
-	      (cmp((contained = sel.ranges[contained]).from(), pos) < 0 || pos.xRel > 0) &&
-	      (cmp(contained.to(), pos) > 0 || pos.xRel < 0))
-	    { leftButtonStartDrag(cm, event, pos, behavior) }
-	  else
-	    { leftButtonSelect(cm, event, pos, behavior) }
-	}
-
-	// Start a text drag. When it ends, see if any dragging actually
-	// happen, and treat as a click if it didn't.
-	function leftButtonStartDrag(cm, event, pos, behavior) {
-	  var display = cm.display, moved = false
-	  var dragEnd = operation(cm, function (e) {
-	    if (webkit) { display.scroller.draggable = false }
-	    cm.state.draggingText = false
-	    off(display.wrapper.ownerDocument, "mouseup", dragEnd)
-	    off(display.wrapper.ownerDocument, "mousemove", mouseMove)
-	    off(display.scroller, "dragstart", dragStart)
-	    off(display.scroller, "drop", dragEnd)
-	    if (!moved) {
-	      e_preventDefault(e)
-	      if (!behavior.addNew)
-	        { extendSelection(cm.doc, pos, null, null, behavior.extend) }
-	      // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081)
-	      if (webkit || ie && ie_version == 9)
-	        { setTimeout(function () {display.wrapper.ownerDocument.body.focus(); display.input.focus()}, 20) }
-	      else
-	        { display.input.focus() }
-	    }
-	  })
-	  var mouseMove = function(e2) {
-	    moved = moved || Math.abs(event.clientX - e2.clientX) + Math.abs(event.clientY - e2.clientY) >= 10
-	  }
-	  var dragStart = function () { return moved = true; }
-	  // Let the drag handler handle this.
-	  if (webkit) { display.scroller.draggable = true }
-	  cm.state.draggingText = dragEnd
-	  dragEnd.copy = !behavior.moveOnDrag
-	  // IE's approach to draggable
-	  if (display.scroller.dragDrop) { display.scroller.dragDrop() }
-	  on(display.wrapper.ownerDocument, "mouseup", dragEnd)
-	  on(display.wrapper.ownerDocument, "mousemove", mouseMove)
-	  on(display.scroller, "dragstart", dragStart)
-	  on(display.scroller, "drop", dragEnd)
-
-	  delayBlurEvent(cm)
-	  setTimeout(function () { return display.input.focus(); }, 20)
-	}
-
-	function rangeForUnit(cm, pos, unit) {
-	  if (unit == "char") { return new Range(pos, pos) }
-	  if (unit == "word") { return cm.findWordAt(pos) }
-	  if (unit == "line") { return new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))) }
-	  var result = unit(cm, pos)
-	  return new Range(result.from, result.to)
-	}
-
-	// Normal selection, as opposed to text dragging.
-	function leftButtonSelect(cm, event, start, behavior) {
-	  var display = cm.display, doc = cm.doc
-	  e_preventDefault(event)
-
-	  var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges
-	  if (behavior.addNew && !behavior.extend) {
-	    ourIndex = doc.sel.contains(start)
-	    if (ourIndex > -1)
-	      { ourRange = ranges[ourIndex] }
-	    else
-	      { ourRange = new Range(start, start) }
-	  } else {
-	    ourRange = doc.sel.primary()
-	    ourIndex = doc.sel.primIndex
-	  }
-
-	  if (behavior.unit == "rectangle") {
-	    if (!behavior.addNew) { ourRange = new Range(start, start) }
-	    start = posFromMouse(cm, event, true, true)
-	    ourIndex = -1
-	  } else {
-	    var range = rangeForUnit(cm, start, behavior.unit)
-	    if (behavior.extend)
-	      { ourRange = extendRange(ourRange, range.anchor, range.head, behavior.extend) }
-	    else
-	      { ourRange = range }
-	  }
-
-	  if (!behavior.addNew) {
-	    ourIndex = 0
-	    setSelection(doc, new Selection([ourRange], 0), sel_mouse)
-	    startSel = doc.sel
-	  } else if (ourIndex == -1) {
-	    ourIndex = ranges.length
-	    setSelection(doc, normalizeSelection(ranges.concat([ourRange]), ourIndex),
-	                 {scroll: false, origin: "*mouse"})
-	  } else if (ranges.length > 1 && ranges[ourIndex].empty() && behavior.unit == "char" && !behavior.extend) {
-	    setSelection(doc, normalizeSelection(ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0),
-	                 {scroll: false, origin: "*mouse"})
-	    startSel = doc.sel
-	  } else {
-	    replaceOneSelection(doc, ourIndex, ourRange, sel_mouse)
-	  }
-
-	  var lastPos = start
-	  function extendTo(pos) {
-	    if (cmp(lastPos, pos) == 0) { return }
-	    lastPos = pos
-
-	    if (behavior.unit == "rectangle") {
-	      var ranges = [], tabSize = cm.options.tabSize
-	      var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize)
-	      var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize)
-	      var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol)
-	      for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));
-	           line <= end; line++) {
-	        var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize)
-	        if (left == right)
-	          { ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos))) }
-	        else if (text.length > leftPos)
-	          { ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize)))) }
-	      }
-	      if (!ranges.length) { ranges.push(new Range(start, start)) }
-	      setSelection(doc, normalizeSelection(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex),
-	                   {origin: "*mouse", scroll: false})
-	      cm.scrollIntoView(pos)
-	    } else {
-	      var oldRange = ourRange
-	      var range = rangeForUnit(cm, pos, behavior.unit)
-	      var anchor = oldRange.anchor, head
-	      if (cmp(range.anchor, anchor) > 0) {
-	        head = range.head
-	        anchor = minPos(oldRange.from(), range.anchor)
-	      } else {
-	        head = range.anchor
-	        anchor = maxPos(oldRange.to(), range.head)
-	      }
-	      var ranges$1 = startSel.ranges.slice(0)
-	      ranges$1[ourIndex] = bidiSimplify(cm, new Range(clipPos(doc, anchor), head))
-	      setSelection(doc, normalizeSelection(ranges$1, ourIndex), sel_mouse)
-	    }
-	  }
-
-	  var editorSize = display.wrapper.getBoundingClientRect()
-	  // Used to ensure timeout re-tries don't fire when another extend
-	  // happened in the meantime (clearTimeout isn't reliable -- at
-	  // least on Chrome, the timeouts still happen even when cleared,
-	  // if the clear happens after their scheduled firing time).
-	  var counter = 0
-
-	  function extend(e) {
-	    var curCount = ++counter
-	    var cur = posFromMouse(cm, e, true, behavior.unit == "rectangle")
-	    if (!cur) { return }
-	    if (cmp(cur, lastPos) != 0) {
-	      cm.curOp.focus = activeElt()
-	      extendTo(cur)
-	      var visible = visibleLines(display, doc)
-	      if (cur.line >= visible.to || cur.line < visible.from)
-	        { setTimeout(operation(cm, function () {if (counter == curCount) { extend(e) }}), 150) }
-	    } else {
-	      var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0
-	      if (outside) { setTimeout(operation(cm, function () {
-	        if (counter != curCount) { return }
-	        display.scroller.scrollTop += outside
-	        extend(e)
-	      }), 50) }
-	    }
-	  }
-
-	  function done(e) {
-	    cm.state.selectingText = false
-	    counter = Infinity
-	    e_preventDefault(e)
-	    display.input.focus()
-	    off(display.wrapper.ownerDocument, "mousemove", move)
-	    off(display.wrapper.ownerDocument, "mouseup", up)
-	    doc.history.lastSelOrigin = null
-	  }
-
-	  var move = operation(cm, function (e) {
-	    if (!e_button(e)) { done(e) }
-	    else { extend(e) }
-	  })
-	  var up = operation(cm, done)
-	  cm.state.selectingText = up
-	  on(display.wrapper.ownerDocument, "mousemove", move)
-	  on(display.wrapper.ownerDocument, "mouseup", up)
-	}
-
-	// Used when mouse-selecting to adjust the anchor to the proper side
-	// of a bidi jump depending on the visual position of the head.
-	function bidiSimplify(cm, range) {
-	  var anchor = range.anchor;
-	  var head = range.head;
-	  var anchorLine = getLine(cm.doc, anchor.line)
-	  if (cmp(anchor, head) == 0 && anchor.sticky == head.sticky) { return range }
-	  var order = getOrder(anchorLine)
-	  if (!order) { return range }
-	  var index = getBidiPartAt(order, anchor.ch, anchor.sticky), part = order[index]
-	  if (part.from != anchor.ch && part.to != anchor.ch) { return range }
-	  var boundary = index + ((part.from == anchor.ch) == (part.level != 1) ? 0 : 1)
-	  if (boundary == 0 || boundary == order.length) { return range }
-
-	  // Compute the relative visual position of the head compared to the
-	  // anchor (<0 is to the left, >0 to the right)
-	  var leftSide
-	  if (head.line != anchor.line) {
-	    leftSide = (head.line - anchor.line) * (cm.doc.direction == "ltr" ? 1 : -1) > 0
-	  } else {
-	    var headIndex = getBidiPartAt(order, head.ch, head.sticky)
-	    var dir = headIndex - index || (head.ch - anchor.ch) * (part.level == 1 ? -1 : 1)
-	    if (headIndex == boundary - 1 || headIndex == boundary)
-	      { leftSide = dir < 0 }
-	    else
-	      { leftSide = dir > 0 }
-	  }
-
-	  var usePart = order[boundary + (leftSide ? -1 : 0)]
-	  var from = leftSide == (usePart.level == 1)
-	  var ch = from ? usePart.from : usePart.to, sticky = from ? "after" : "before"
-	  return anchor.ch == ch && anchor.sticky == sticky ? range : new Range(new Pos(anchor.line, ch, sticky), head)
-	}
-
-
-	// Determines whether an event happened in the gutter, and fires the
-	// handlers for the corresponding event.
-	function gutterEvent(cm, e, type, prevent) {
-	  var mX, mY
-	  if (e.touches) {
-	    mX = e.touches[0].clientX
-	    mY = e.touches[0].clientY
-	  } else {
-	    try { mX = e.clientX; mY = e.clientY }
-	    catch(e) { return false }
-	  }
-	  if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) { return false }
-	  if (prevent) { e_preventDefault(e) }
-
-	  var display = cm.display
-	  var lineBox = display.lineDiv.getBoundingClientRect()
-
-	  if (mY > lineBox.bottom || !hasHandler(cm, type)) { return e_defaultPrevented(e) }
-	  mY -= lineBox.top - display.viewOffset
-
-	  for (var i = 0; i < cm.options.gutters.length; ++i) {
-	    var g = display.gutters.childNodes[i]
-	    if (g && g.getBoundingClientRect().right >= mX) {
-	      var line = lineAtHeight(cm.doc, mY)
-	      var gutter = cm.options.gutters[i]
-	      signal(cm, type, cm, line, gutter, e)
-	      return e_defaultPrevented(e)
-	    }
-	  }
-	}
-
-	function clickInGutter(cm, e) {
-	  return gutterEvent(cm, e, "gutterClick", true)
-	}
-
-	// CONTEXT MENU HANDLING
-
-	// To make the context menu work, we need to briefly unhide the
-	// textarea (making it as unobtrusive as possible) to let the
-	// right-click take effect on it.
-	function onContextMenu(cm, e) {
-	  if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) { return }
-	  if (signalDOMEvent(cm, e, "contextmenu")) { return }
-	  cm.display.input.onContextMenu(e)
-	}
-
-	function contextMenuInGutter(cm, e) {
-	  if (!hasHandler(cm, "gutterContextMenu")) { return false }
-	  return gutterEvent(cm, e, "gutterContextMenu", false)
-	}
-
-	function themeChanged(cm) {
-	  cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
-	    cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-")
-	  clearCaches(cm)
-	}
-
-	var Init = {toString: function(){return "CodeMirror.Init"}}
-
-	var defaults = {}
-	var optionHandlers = {}
-
-	function defineOptions(CodeMirror) {
-	  var optionHandlers = CodeMirror.optionHandlers
-
-	  function option(name, deflt, handle, notOnInit) {
-	    CodeMirror.defaults[name] = deflt
-	    if (handle) { optionHandlers[name] =
-	      notOnInit ? function (cm, val, old) {if (old != Init) { handle(cm, val, old) }} : handle }
-	  }
-
-	  CodeMirror.defineOption = option
-
-	  // Passed to option handlers when there is no old value.
-	  CodeMirror.Init = Init
-
-	  // These two are, on init, called from the constructor because they
-	  // have to be initialized before the editor can start at all.
-	  option("value", "", function (cm, val) { return cm.setValue(val); }, true)
-	  option("mode", null, function (cm, val) {
-	    cm.doc.modeOption = val
-	    loadMode(cm)
-	  }, true)
-
-	  option("indentUnit", 2, loadMode, true)
-	  option("indentWithTabs", false)
-	  option("smartIndent", true)
-	  option("tabSize", 4, function (cm) {
-	    resetModeState(cm)
-	    clearCaches(cm)
-	    regChange(cm)
-	  }, true)
-
-	  option("lineSeparator", null, function (cm, val) {
-	    cm.doc.lineSep = val
-	    if (!val) { return }
-	    var newBreaks = [], lineNo = cm.doc.first
-	    cm.doc.iter(function (line) {
-	      for (var pos = 0;;) {
-	        var found = line.text.indexOf(val, pos)
-	        if (found == -1) { break }
-	        pos = found + val.length
-	        newBreaks.push(Pos(lineNo, found))
-	      }
-	      lineNo++
-	    })
-	    for (var i = newBreaks.length - 1; i >= 0; i--)
-	      { replaceRange(cm.doc, val, newBreaks[i], Pos(newBreaks[i].line, newBreaks[i].ch + val.length)) }
-	  })
-	  option("specialChars", /[\u0000-\u001f\u007f-\u009f\u00ad\u061c\u200b-\u200f\u2028\u2029\ufeff]/g, function (cm, val, old) {
-	    cm.state.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g")
-	    if (old != Init) { cm.refresh() }
-	  })
-	  option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function (cm) { return cm.refresh(); }, true)
-	  option("electricChars", true)
-	  option("inputStyle", mobile ? "contenteditable" : "textarea", function () {
-	    throw new Error("inputStyle can not (yet) be changed in a running editor") // FIXME
-	  }, true)
-	  option("spellcheck", false, function (cm, val) { return cm.getInputField().spellcheck = val; }, true)
-	  option("rtlMoveVisually", !windows)
-	  option("wholeLineUpdateBefore", true)
-
-	  option("theme", "default", function (cm) {
-	    themeChanged(cm)
-	    guttersChanged(cm)
-	  }, true)
-	  option("keyMap", "default", function (cm, val, old) {
-	    var next = getKeyMap(val)
-	    var prev = old != Init && getKeyMap(old)
-	    if (prev && prev.detach) { prev.detach(cm, next) }
-	    if (next.attach) { next.attach(cm, prev || null) }
-	  })
-	  option("extraKeys", null)
-	  option("configureMouse", null)
-
-	  option("lineWrapping", false, wrappingChanged, true)
-	  option("gutters", [], function (cm) {
-	    setGuttersForLineNumbers(cm.options)
-	    guttersChanged(cm)
-	  }, true)
-	  option("fixedGutter", true, function (cm, val) {
-	    cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0"
-	    cm.refresh()
-	  }, true)
-	  option("coverGutterNextToScrollbar", false, function (cm) { return updateScrollbars(cm); }, true)
-	  option("scrollbarStyle", "native", function (cm) {
-	    initScrollbars(cm)
-	    updateScrollbars(cm)
-	    cm.display.scrollbars.setScrollTop(cm.doc.scrollTop)
-	    cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft)
-	  }, true)
-	  option("lineNumbers", false, function (cm) {
-	    setGuttersForLineNumbers(cm.options)
-	    guttersChanged(cm)
-	  }, true)
-	  option("firstLineNumber", 1, guttersChanged, true)
-	  option("lineNumberFormatter", function (integer) { return integer; }, guttersChanged, true)
-	  option("showCursorWhenSelecting", false, updateSelection, true)
-
-	  option("resetSelectionOnContextMenu", true)
-	  option("lineWiseCopyCut", true)
-	  option("pasteLinesPerSelection", true)
-
-	  option("readOnly", false, function (cm, val) {
-	    if (val == "nocursor") {
-	      onBlur(cm)
-	      cm.display.input.blur()
-	    }
-	    cm.display.input.readOnlyChanged(val)
-	  })
-	  option("disableInput", false, function (cm, val) {if (!val) { cm.display.input.reset() }}, true)
-	  option("dragDrop", true, dragDropChanged)
-	  option("allowDropFileTypes", null)
-
-	  option("cursorBlinkRate", 530)
-	  option("cursorScrollMargin", 0)
-	  option("cursorHeight", 1, updateSelection, true)
-	  option("singleCursorHeightPerLine", true, updateSelection, true)
-	  option("workTime", 100)
-	  option("workDelay", 100)
-	  option("flattenSpans", true, resetModeState, true)
-	  option("addModeClass", false, resetModeState, true)
-	  option("pollInterval", 100)
-	  option("undoDepth", 200, function (cm, val) { return cm.doc.history.undoDepth = val; })
-	  option("historyEventDelay", 1250)
-	  option("viewportMargin", 10, function (cm) { return cm.refresh(); }, true)
-	  option("maxHighlightLength", 10000, resetModeState, true)
-	  option("moveInputWithCursor", true, function (cm, val) {
-	    if (!val) { cm.display.input.resetPosition() }
-	  })
-
-	  option("tabindex", null, function (cm, val) { return cm.display.input.getField().tabIndex = val || ""; })
-	  option("autofocus", null)
-	  option("direction", "ltr", function (cm, val) { return cm.doc.setDirection(val); }, true)
-	}
-
-	function guttersChanged(cm) {
-	  updateGutters(cm)
-	  regChange(cm)
-	  alignHorizontally(cm)
-	}
-
-	function dragDropChanged(cm, value, old) {
-	  var wasOn = old && old != Init
-	  if (!value != !wasOn) {
-	    var funcs = cm.display.dragFunctions
-	    var toggle = value ? on : off
-	    toggle(cm.display.scroller, "dragstart", funcs.start)
-	    toggle(cm.display.scroller, "dragenter", funcs.enter)
-	    toggle(cm.display.scroller, "dragover", funcs.over)
-	    toggle(cm.display.scroller, "dragleave", funcs.leave)
-	    toggle(cm.display.scroller, "drop", funcs.drop)
-	  }
-	}
-
-	function wrappingChanged(cm) {
-	  if (cm.options.lineWrapping) {
-	    addClass(cm.display.wrapper, "CodeMirror-wrap")
-	    cm.display.sizer.style.minWidth = ""
-	    cm.display.sizerWidth = null
-	  } else {
-	    rmClass(cm.display.wrapper, "CodeMirror-wrap")
-	    findMaxLine(cm)
-	  }
-	  estimateLineHeights(cm)
-	  regChange(cm)
-	  clearCaches(cm)
-	  setTimeout(function () { return updateScrollbars(cm); }, 100)
-	}
-
-	// A CodeMirror instance represents an editor. This is the object
-	// that user code is usually dealing with.
-
-	function CodeMirror(place, options) {
-	  var this$1 = this;
-
-	  if (!(this instanceof CodeMirror)) { return new CodeMirror(place, options) }
-
-	  this.options = options = options ? copyObj(options) : {}
-	  // Determine effective options based on given values and defaults.
-	  copyObj(defaults, options, false)
-	  setGuttersForLineNumbers(options)
-
-	  var doc = options.value
-	  if (typeof doc == "string") { doc = new Doc(doc, options.mode, null, options.lineSeparator, options.direction) }
-	  this.doc = doc
-
-	  var input = new CodeMirror.inputStyles[options.inputStyle](this)
-	  var display = this.display = new Display(place, doc, input)
-	  display.wrapper.CodeMirror = this
-	  updateGutters(this)
-	  themeChanged(this)
-	  if (options.lineWrapping)
-	    { this.display.wrapper.className += " CodeMirror-wrap" }
-	  initScrollbars(this)
-
-	  this.state = {
-	    keyMaps: [],  // stores maps added by addKeyMap
-	    overlays: [], // highlighting overlays, as added by addOverlay
-	    modeGen: 0,   // bumped when mode/overlay changes, used to invalidate highlighting info
-	    overwrite: false,
-	    delayingBlurEvent: false,
-	    focused: false,
-	    suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
-	    pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in input.poll
-	    selectingText: false,
-	    draggingText: false,
-	    highlight: new Delayed(), // stores highlight worker timeout
-	    keySeq: null,  // Unfinished key sequence
-	    specialChars: null
-	  }
-
-	  if (options.autofocus && !mobile) { display.input.focus() }
-
-	  // Override magic textarea content restore that IE sometimes does
-	  // on our hidden textarea on reload
-	  if (ie && ie_version < 11) { setTimeout(function () { return this$1.display.input.reset(true); }, 20) }
-
-	  registerEventHandlers(this)
-	  ensureGlobalHandlers()
-
-	  startOperation(this)
-	  this.curOp.forceUpdate = true
-	  attachDoc(this, doc)
-
-	  if ((options.autofocus && !mobile) || this.hasFocus())
-	    { setTimeout(bind(onFocus, this), 20) }
-	  else
-	    { onBlur(this) }
-
-	  for (var opt in optionHandlers) { if (optionHandlers.hasOwnProperty(opt))
-	    { optionHandlers[opt](this$1, options[opt], Init) } }
-	  maybeUpdateLineNumberWidth(this)
-	  if (options.finishInit) { options.finishInit(this) }
-	  for (var i = 0; i < initHooks.length; ++i) { initHooks[i](this$1) }
-	  endOperation(this)
-	  // Suppress optimizelegibility in Webkit, since it breaks text
-	  // measuring on line wrapping boundaries.
-	  if (webkit && options.lineWrapping &&
-	      getComputedStyle(display.lineDiv).textRendering == "optimizelegibility")
-	    { display.lineDiv.style.textRendering = "auto" }
-	}
-
-	// The default configuration options.
-	CodeMirror.defaults = defaults
-	// Functions to run when options are changed.
-	CodeMirror.optionHandlers = optionHandlers
-
-	// Attach the necessary event handlers when initializing the editor
-	function registerEventHandlers(cm) {
-	  var d = cm.display
-	  on(d.scroller, "mousedown", operation(cm, onMouseDown))
-	  // Older IE's will not fire a second mousedown for a double click
-	  if (ie && ie_version < 11)
-	    { on(d.scroller, "dblclick", operation(cm, function (e) {
-	      if (signalDOMEvent(cm, e)) { return }
-	      var pos = posFromMouse(cm, e)
-	      if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) { return }
-	      e_preventDefault(e)
-	      var word = cm.findWordAt(pos)
-	      extendSelection(cm.doc, word.anchor, word.head)
-	    })) }
-	  else
-	    { on(d.scroller, "dblclick", function (e) { return signalDOMEvent(cm, e) || e_preventDefault(e); }) }
-	  // Some browsers fire contextmenu *after* opening the menu, at
-	  // which point we can't mess with it anymore. Context menu is
-	  // handled in onMouseDown for these browsers.
-	  if (!captureRightClick) { on(d.scroller, "contextmenu", function (e) { return onContextMenu(cm, e); }) }
-
-	  // Used to suppress mouse event handling when a touch happens
-	  var touchFinished, prevTouch = {end: 0}
-	  function finishTouch() {
-	    if (d.activeTouch) {
-	      touchFinished = setTimeout(function () { return d.activeTouch = null; }, 1000)
-	      prevTouch = d.activeTouch
-	      prevTouch.end = +new Date
-	    }
-	  }
-	  function isMouseLikeTouchEvent(e) {
-	    if (e.touches.length != 1) { return false }
-	    var touch = e.touches[0]
-	    return touch.radiusX <= 1 && touch.radiusY <= 1
-	  }
-	  function farAway(touch, other) {
-	    if (other.left == null) { return true }
-	    var dx = other.left - touch.left, dy = other.top - touch.top
-	    return dx * dx + dy * dy > 20 * 20
-	  }
-	  on(d.scroller, "touchstart", function (e) {
-	    if (!signalDOMEvent(cm, e) && !isMouseLikeTouchEvent(e) && !clickInGutter(cm, e)) {
-	      d.input.ensurePolled()
-	      clearTimeout(touchFinished)
-	      var now = +new Date
-	      d.activeTouch = {start: now, moved: false,
-	                       prev: now - prevTouch.end <= 300 ? prevTouch : null}
-	      if (e.touches.length == 1) {
-	        d.activeTouch.left = e.touches[0].pageX
-	        d.activeTouch.top = e.touches[0].pageY
-	      }
-	    }
-	  })
-	  on(d.scroller, "touchmove", function () {
-	    if (d.activeTouch) { d.activeTouch.moved = true }
-	  })
-	  on(d.scroller, "touchend", function (e) {
-	    var touch = d.activeTouch
-	    if (touch && !eventInWidget(d, e) && touch.left != null &&
-	        !touch.moved && new Date - touch.start < 300) {
-	      var pos = cm.coordsChar(d.activeTouch, "page"), range
-	      if (!touch.prev || farAway(touch, touch.prev)) // Single tap
-	        { range = new Range(pos, pos) }
-	      else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap
-	        { range = cm.findWordAt(pos) }
-	      else // Triple tap
-	        { range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))) }
-	      cm.setSelection(range.anchor, range.head)
-	      cm.focus()
-	      e_preventDefault(e)
-	    }
-	    finishTouch()
-	  })
-	  on(d.scroller, "touchcancel", finishTouch)
-
-	  // Sync scrolling between fake scrollbars and real scrollable
-	  // area, ensure viewport is updated when scrolling.
-	  on(d.scroller, "scroll", function () {
-	    if (d.scroller.clientHeight) {
-	      updateScrollTop(cm, d.scroller.scrollTop)
-	      setScrollLeft(cm, d.scroller.scrollLeft, true)
-	      signal(cm, "scroll", cm)
-	    }
-	  })
-
-	  // Listen to wheel events in order to try and update the viewport on time.
-	  on(d.scroller, "mousewheel", function (e) { return onScrollWheel(cm, e); })
-	  on(d.scroller, "DOMMouseScroll", function (e) { return onScrollWheel(cm, e); })
-
-	  // Prevent wrapper from ever scrolling
-	  on(d.wrapper, "scroll", function () { return d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; })
-
-	  d.dragFunctions = {
-	    enter: function (e) {if (!signalDOMEvent(cm, e)) { e_stop(e) }},
-	    over: function (e) {if (!signalDOMEvent(cm, e)) { onDragOver(cm, e); e_stop(e) }},
-	    start: function (e) { return onDragStart(cm, e); },
-	    drop: operation(cm, onDrop),
-	    leave: function (e) {if (!signalDOMEvent(cm, e)) { clearDragCursor(cm) }}
-	  }
-
-	  var inp = d.input.getField()
-	  on(inp, "keyup", function (e) { return onKeyUp.call(cm, e); })
-	  on(inp, "keydown", operation(cm, onKeyDown))
-	  on(inp, "keypress", operation(cm, onKeyPress))
-	  on(inp, "focus", function (e) { return onFocus(cm, e); })
-	  on(inp, "blur", function (e) { return onBlur(cm, e); })
-	}
-
-	var initHooks = []
-	CodeMirror.defineInitHook = function (f) { return initHooks.push(f); }
-
-	// Indent the given line. The how parameter can be "smart",
-	// "add"/null, "subtract", or "prev". When aggressive is false
-	// (typically set to true for forced single-line indents), empty
-	// lines are not indented, and places where the mode returns Pass
-	// are left alone.
-	function indentLine(cm, n, how, aggressive) {
-	  var doc = cm.doc, state
-	  if (how == null) { how = "add" }
-	  if (how == "smart") {
-	    // Fall back to "prev" when the mode doesn't have an indentation
-	    // method.
-	    if (!doc.mode.indent) { how = "prev" }
-	    else { state = getContextBefore(cm, n).state }
-	  }
-
-	  var tabSize = cm.options.tabSize
-	  var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize)
-	  if (line.stateAfter) { line.stateAfter = null }
-	  var curSpaceString = line.text.match(/^\s*/)[0], indentation
-	  if (!aggressive && !/\S/.test(line.text)) {
-	    indentation = 0
-	    how = "not"
-	  } else if (how == "smart") {
-	    indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text)
-	    if (indentation == Pass || indentation > 150) {
-	      if (!aggressive) { return }
-	      how = "prev"
-	    }
-	  }
-	  if (how == "prev") {
-	    if (n > doc.first) { indentation = countColumn(getLine(doc, n-1).text, null, tabSize) }
-	    else { indentation = 0 }
-	  } else if (how == "add") {
-	    indentation = curSpace + cm.options.indentUnit
-	  } else if (how == "subtract") {
-	    indentation = curSpace - cm.options.indentUnit
-	  } else if (typeof how == "number") {
-	    indentation = curSpace + how
-	  }
-	  indentation = Math.max(0, indentation)
-
-	  var indentString = "", pos = 0
-	  if (cm.options.indentWithTabs)
-	    { for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t"} }
-	  if (pos < indentation) { indentString += spaceStr(indentation - pos) }
-
-	  if (indentString != curSpaceString) {
-	    replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input")
-	    line.stateAfter = null
-	    return true
-	  } else {
-	    // Ensure that, if the cursor was in the whitespace at the start
-	    // of the line, it is moved to the end of that space.
-	    for (var i$1 = 0; i$1 < doc.sel.ranges.length; i$1++) {
-	      var range = doc.sel.ranges[i$1]
-	      if (range.head.line == n && range.head.ch < curSpaceString.length) {
-	        var pos$1 = Pos(n, curSpaceString.length)
-	        replaceOneSelection(doc, i$1, new Range(pos$1, pos$1))
-	        break
-	      }
-	    }
-	  }
-	}
-
-	// This will be set to a {lineWise: bool, text: [string]} object, so
-	// that, when pasting, we know what kind of selections the copied
-	// text was made out of.
-	var lastCopied = null
-
-	function setLastCopied(newLastCopied) {
-	  lastCopied = newLastCopied
-	}
-
-	function applyTextInput(cm, inserted, deleted, sel, origin) {
-	  var doc = cm.doc
-	  cm.display.shift = false
-	  if (!sel) { sel = doc.sel }
-
-	  var paste = cm.state.pasteIncoming || origin == "paste"
-	  var textLines = splitLinesAuto(inserted), multiPaste = null
-	  // When pasting N lines into N selections, insert one line per selection
-	  if (paste && sel.ranges.length > 1) {
-	    if (lastCopied && lastCopied.text.join("\n") == inserted) {
-	      if (sel.ranges.length % lastCopied.text.length == 0) {
-	        multiPaste = []
-	        for (var i = 0; i < lastCopied.text.length; i++)
-	          { multiPaste.push(doc.splitLines(lastCopied.text[i])) }
-	      }
-	    } else if (textLines.length == sel.ranges.length && cm.options.pasteLinesPerSelection) {
-	      multiPaste = map(textLines, function (l) { return [l]; })
-	    }
-	  }
-
-	  var updateInput
-	  // Normal behavior is to insert the new text into every selection
-	  for (var i$1 = sel.ranges.length - 1; i$1 >= 0; i$1--) {
-	    var range = sel.ranges[i$1]
-	    var from = range.from(), to = range.to()
-	    if (range.empty()) {
-	      if (deleted && deleted > 0) // Handle deletion
-	        { from = Pos(from.line, from.ch - deleted) }
-	      else if (cm.state.overwrite && !paste) // Handle overwrite
-	        { to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length)) }
-	      else if (lastCopied && lastCopied.lineWise && lastCopied.text.join("\n") == inserted)
-	        { from = to = Pos(from.line, 0) }
-	    }
-	    updateInput = cm.curOp.updateInput
-	    var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i$1 % multiPaste.length] : textLines,
-	                       origin: origin || (paste ? "paste" : cm.state.cutIncoming ? "cut" : "+input")}
-	    makeChange(cm.doc, changeEvent)
-	    signalLater(cm, "inputRead", cm, changeEvent)
-	  }
-	  if (inserted && !paste)
-	    { triggerElectric(cm, inserted) }
-
-	  ensureCursorVisible(cm)
-	  cm.curOp.updateInput = updateInput
-	  cm.curOp.typing = true
-	  cm.state.pasteIncoming = cm.state.cutIncoming = false
-	}
-
-	function handlePaste(e, cm) {
-	  var pasted = e.clipboardData && e.clipboardData.getData("Text")
-	  if (pasted) {
-	    e.preventDefault()
-	    if (!cm.isReadOnly() && !cm.options.disableInput)
-	      { runInOp(cm, function () { return applyTextInput(cm, pasted, 0, null, "paste"); }) }
-	    return true
-	  }
-	}
-
-	function triggerElectric(cm, inserted) {
-	  // When an 'electric' character is inserted, immediately trigger a reindent
-	  if (!cm.options.electricChars || !cm.options.smartIndent) { return }
-	  var sel = cm.doc.sel
-
-	  for (var i = sel.ranges.length - 1; i >= 0; i--) {
-	    var range = sel.ranges[i]
-	    if (range.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range.head.line)) { continue }
-	    var mode = cm.getModeAt(range.head)
-	    var indented = false
-	    if (mode.electricChars) {
-	      for (var j = 0; j < mode.electricChars.length; j++)
-	        { if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {
-	          indented = indentLine(cm, range.head.line, "smart")
-	          break
-	        } }
-	    } else if (mode.electricInput) {
-	      if (mode.electricInput.test(getLine(cm.doc, range.head.line).text.slice(0, range.head.ch)))
-	        { indented = indentLine(cm, range.head.line, "smart") }
-	    }
-	    if (indented) { signalLater(cm, "electricInput", cm, range.head.line) }
-	  }
-	}
-
-	function copyableRanges(cm) {
-	  var text = [], ranges = []
-	  for (var i = 0; i < cm.doc.sel.ranges.length; i++) {
-	    var line = cm.doc.sel.ranges[i].head.line
-	    var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)}
-	    ranges.push(lineRange)
-	    text.push(cm.getRange(lineRange.anchor, lineRange.head))
-	  }
-	  return {text: text, ranges: ranges}
-	}
-
-	function disableBrowserMagic(field, spellcheck) {
-	  field.setAttribute("autocorrect", "off")
-	  field.setAttribute("autocapitalize", "off")
-	  field.setAttribute("spellcheck", !!spellcheck)
-	}
-
-	function hiddenTextarea() {
-	  var te = elt("textarea", null, null, "position: absolute; bottom: -1em; padding: 0; width: 1px; height: 1em; outline: none")
-	  var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;")
-	  // The textarea is kept positioned near the cursor to prevent the
-	  // fact that it'll be scrolled into view on input from scrolling
-	  // our fake cursor out of view. On webkit, when wrap=off, paste is
-	  // very slow. So make the area wide instead.
-	  if (webkit) { te.style.width = "1000px" }
-	  else { te.setAttribute("wrap", "off") }
-	  // If border: 0; -- iOS fails to open keyboard (issue #1287)
-	  if (ios) { te.style.border = "1px solid black" }
-	  disableBrowserMagic(te)
-	  return div
-	}
-
-	// The publicly visible API. Note that methodOp(f) means
-	// 'wrap f in an operation, performed on its `this` parameter'.
-
-	// This is not the complete set of editor methods. Most of the
-	// methods defined on the Doc type are also injected into
-	// CodeMirror.prototype, for backwards compatibility and
-	// convenience.
-
-	function addEditorMethods(CodeMirror) {
-	  var optionHandlers = CodeMirror.optionHandlers
-
-	  var helpers = CodeMirror.helpers = {}
-
-	  CodeMirror.prototype = {
-	    constructor: CodeMirror,
-	    focus: function(){window.focus(); this.display.input.focus()},
-
-	    setOption: function(option, value) {
-	      var options = this.options, old = options[option]
-	      if (options[option] == value && option != "mode") { return }
-	      options[option] = value
-	      if (optionHandlers.hasOwnProperty(option))
-	        { operation(this, optionHandlers[option])(this, value, old) }
-	      signal(this, "optionChange", this, option)
-	    },
-
-	    getOption: function(option) {return this.options[option]},
-	    getDoc: function() {return this.doc},
-
-	    addKeyMap: function(map, bottom) {
-	      this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map))
-	    },
-	    removeKeyMap: function(map) {
-	      var maps = this.state.keyMaps
-	      for (var i = 0; i < maps.length; ++i)
-	        { if (maps[i] == map || maps[i].name == map) {
-	          maps.splice(i, 1)
-	          return true
-	        } }
-	    },
-
-	    addOverlay: methodOp(function(spec, options) {
-	      var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec)
-	      if (mode.startState) { throw new Error("Overlays may not be stateful.") }
-	      insertSorted(this.state.overlays,
-	                   {mode: mode, modeSpec: spec, opaque: options && options.opaque,
-	                    priority: (options && options.priority) || 0},
-	                   function (overlay) { return overlay.priority; })
-	      this.state.modeGen++
-	      regChange(this)
-	    }),
-	    removeOverlay: methodOp(function(spec) {
-	      var this$1 = this;
-
-	      var overlays = this.state.overlays
-	      for (var i = 0; i < overlays.length; ++i) {
-	        var cur = overlays[i].modeSpec
-	        if (cur == spec || typeof spec == "string" && cur.name == spec) {
-	          overlays.splice(i, 1)
-	          this$1.state.modeGen++
-	          regChange(this$1)
-	          return
-	        }
-	      }
-	    }),
-
-	    indentLine: methodOp(function(n, dir, aggressive) {
-	      if (typeof dir != "string" && typeof dir != "number") {
-	        if (dir == null) { dir = this.options.smartIndent ? "smart" : "prev" }
-	        else { dir = dir ? "add" : "subtract" }
-	      }
-	      if (isLine(this.doc, n)) { indentLine(this, n, dir, aggressive) }
-	    }),
-	    indentSelection: methodOp(function(how) {
-	      var this$1 = this;
-
-	      var ranges = this.doc.sel.ranges, end = -1
-	      for (var i = 0; i < ranges.length; i++) {
-	        var range = ranges[i]
-	        if (!range.empty()) {
-	          var from = range.from(), to = range.to()
-	          var start = Math.max(end, from.line)
-	          end = Math.min(this$1.lastLine(), to.line - (to.ch ? 0 : 1)) + 1
-	          for (var j = start; j < end; ++j)
-	            { indentLine(this$1, j, how) }
-	          var newRanges = this$1.doc.sel.ranges
-	          if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0)
-	            { replaceOneSelection(this$1.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll) }
-	        } else if (range.head.line > end) {
-	          indentLine(this$1, range.head.line, how, true)
-	          end = range.head.line
-	          if (i == this$1.doc.sel.primIndex) { ensureCursorVisible(this$1) }
-	        }
-	      }
-	    }),
-
-	    // Fetch the parser token for a given character. Useful for hacks
-	    // that want to inspect the mode state (say, for completion).
-	    getTokenAt: function(pos, precise) {
-	      return takeToken(this, pos, precise)
-	    },
-
-	    getLineTokens: function(line, precise) {
-	      return takeToken(this, Pos(line), precise, true)
-	    },
-
-	    getTokenTypeAt: function(pos) {
-	      pos = clipPos(this.doc, pos)
-	      var styles = getLineStyles(this, getLine(this.doc, pos.line))
-	      var before = 0, after = (styles.length - 1) / 2, ch = pos.ch
-	      var type
-	      if (ch == 0) { type = styles[2] }
-	      else { for (;;) {
-	        var mid = (before + after) >> 1
-	        if ((mid ? styles[mid * 2 - 1] : 0) >= ch) { after = mid }
-	        else if (styles[mid * 2 + 1] < ch) { before = mid + 1 }
-	        else { type = styles[mid * 2 + 2]; break }
-	      } }
-	      var cut = type ? type.indexOf("overlay ") : -1
-	      return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1)
-	    },
-
-	    getModeAt: function(pos) {
-	      var mode = this.doc.mode
-	      if (!mode.innerMode) { return mode }
-	      return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode
-	    },
-
-	    getHelper: function(pos, type) {
-	      return this.getHelpers(pos, type)[0]
-	    },
-
-	    getHelpers: function(pos, type) {