Suppress quick-firing of blur-focus events when dragging and clicking on Internet Explorer.
Fix the `insertAt` option to `addLineWidget` to actually allow the widget to be placed after all widgets for the line.
[soy mode](https://codemirror.net/mode/soy/): Support `@Attribute` and element composition.
[shell mode](https://codemirror.net/mode/shell/): Support heredoc quoting.
## 5.58.2 (2020-10-23)
### Bug fixes
Fix a bug where horizontally scrolling the cursor into view sometimes failed with a non-fixed gutter.
[julia mode](https://codemirror.net/mode/julia/): Fix an infinite recursion bug.
## 5.58.1 (2020-09-23)
### Bug fixes
[placeholder addon](https://codemirror.net/doc/manual.html#addon_placeholder): Remove arrow function that ended up in the code.
## 5.58.0 (2020-09-21)
### Bug fixes
Make backspace delete by code point, not glyph.
Suppress flickering focus outline when clicking on scrollbars in Chrome.
Fix a bug that prevented attributes added via `markText` from showing up unless the span also had some other styling.
Suppress cut and paste context menu entries in readonly editors in Chrome.
[placeholder addon](https://codemirror.net/doc/manual.html#addon_placeholder): Update placeholder visibility during composition.
### New features
Make it less cumbersome to style new lint message types.
[vim bindings](https://codemirror.net/demo/vim.html): Support black hole register, `gn` and `gN`
## 5.57.0 (2020-08-20)
### Bug fixes
Fix issue that broke binding the macOS Command key.
[comment addon](https://codemirror.net/doc/manual.html#addon_comment): Keep selection in front of inserted markers when adding a block comment.
[css mode](https://codemirror.net/mode/css/): Recognize more properties and value names.
[annotatescrollbar addon](https://codemirror.net/doc/manual.html#addon_annotatescrollbar): Don't hide matches in collapsed content.
### New features
[vim bindings](https://codemirror.net/demo/vim.html): Support tag text objects in xml and html modes.
## 5.56.0 (2020-07-20)
### Bug fixes
Line-wise pasting was fixed on Chrome Windows.
[wast mode](https://codemirror.net/mode/wast/): Follow standard changes.
[soy mode](https://codemirror.net/mode/soy/): Support import expressions, template type, and loop indices.
[sql-hint addon](https://codemirror.net/doc/manual.html#addon_sql-hint): Improve handling of double quotes.
### New features
[show-hint addon](https://codemirror.net/doc/manual.html#addon_show-hint): New option `scrollMargin` to control how many options are visible beyond the selected one.
[hardwrap addon](https://codemirror.net/doc/manual.html#addon_hardwrap): New option `forceBreak` to disable breaking of words that are longer than a line.
## 5.55.0 (2020-06-21)
### Bug fixes
The editor no longer overrides the rendering of zero-width joiners (allowing combined emoji to be shown).
[vim bindings](https://codemirror.net/demo/vim.html): Fix an issue where the `vim-mode-change` event was fired twice.
[javascript mode](https://codemirror.net/mode/javascript/): Only allow `-->`-style comments at the start of a line.
[runmode addon](https://codemirror.net/doc/manual.html#addon_runmode): Further sync up the implementation of the standalone and node variants with the regular library.
### New features
[loadmode addon](https://codemirror.net/doc/manual.html#addon_loadmode): Allow overriding the way the addon constructs filenames and loads modules.
## 5.54.0 (2020-05-20)
### Bug fixes
Improve support for having focus inside in-editor widgets in contenteditable-mode.
Fix issue where the scroll position could jump when clicking on a selection in Chrome.
[python mode](https://codemirror.net/mode/python/): Better format string support.
[javascript mode](https://codemirror.net/mode/javascript/): Improve parsing of private properties and class fields.
[matchbrackets addon](https://codemirror.net/doc/manual.html#addon_matchbrackets): Disable highlighting when the editor doesn't have focus.
### New features
[runmode addon](https://codemirror.net/doc/manual.html#addon_runmode): Properly support for cross-line lookahead.
[vim bindings](https://codemirror.net/demo/vim.html): Allow Ex-Commands with non-word names.
[gfm mode](https://codemirror.net/mode/gfm/): Add a `fencedCodeBlockDefaultMode` option.
## 5.53.2 (2020-04-21)
### Bug fixes
[show-hint addon](https://codemirror.net/doc/manual.html#addon_show-hint): Fix a regression that broke completion picking.
## 5.53.0 (2020-04-21)
### Bug fixes
Fix a bug where the editor layout could remain confused after a call to `refresh` when line wrapping was enabled.
[dialog addon](https://codemirror.net/doc/manual.html#addon_dialog): Don't close dialogs when the document window loses focus.
[merge addon](https://codemirror.net/doc/manual.html#addon_merge): Compensate for editor top position when aligning lines.
[vim bindings](https://codemirror.net/demo/vim.html): Improve EOL handling.
[emacs bindings](https://codemirror.net/demo/emacs.html): Include default keymap as a fallback.
[julia mode](https://codemirror.net/mode/julia/): Fix an infinite loop bug.
[show-hint addon](https://codemirror.net/doc/manual.html#addon_show-hint): Scroll cursor into view when picking a completion.
### New features
New option: [`screenReaderLabel`](https://codemirror.net/doc/manual.html#option_screenReaderLabel) to add a label to the editor.
New mode: [wast](https://codemirror.net/mode/wast/).
## 5.52.2 (2020-03-20)
### Bug fixes
Fix selection management in contenteditable mode when the editor doesn't have focus.
Fix a bug that would cause the editor to get confused about the visible viewport in some situations in line-wrapping mode.
[markdown mode](https://codemirror.net/mode/markdown/): Don't treat single dashes as setext header markers.
[zenburn theme](https://codemirror.net/demo/theme.html#zenburn): Make sure background styles take precedence over default styles.
[css mode](https://codemirror.net/mode/css/): Recognize a number of new properties.
## 5.52.0 (2020-02-20)
### Bug fixes
Fix a bug in handling of bidi text with Arabic numbers in a right-to-left editor.
Fix a crash when combining file drop with a `"beforeChange"` filter.
Prevent issue when passing negative coordinates to `scrollTo`.
### New features
[lint](https://codemirror.net/doc/manual.html#addon_lint) and [tern](https://codemirror.net/demo/tern.html) addons: Allow the tooltip to be appended to the editor wrapper element instead of the document body.
## 5.51.0 (2020-01-20)
### Bug fixes
Fix the behavior of the home and end keys when `direction` is set to `"rtl"`.
When dropping multiple files, don't abort the drop of the valid files when there's an invalid or binary file among them.
Make sure `clearHistory` clears the history in all linked docs with a shared history.
[vim bindings](https://codemirror.net/demo/vim.html): Fix behavior of `'` and `` ` `` marks, fix `R` in visual mode.
### New features
[vim bindings](https://codemirror.net/demo/vim.html): Support `gi`, `gI`, and `gJ`.
[foldgutter addon](https://codemirror.net/doc/manual.html#addon_foldgutter): Optimize by reusing DOM when possible.
[markdown mode](https://codemirror.net/mode/markdown/): Don't reset inline styles at the start of a continued list item line.
[clike mode](https://codemirror.net/mode/clike/): Add a configuration for Objective-C++.
## 5.49.0 (2019-09-20)
### Bug fixes
[octave mode](https://codemirror.net/mode/octave/index.html): Don't mark common punctuation as error.
[clike mode](https://codemirror.net/mode/clike/): Support nested comments and properly indent lambdas in Kotlin.
[foldgutter](https://codemirror.net/doc/manual.html#addon_foldgutter) and [annotatescrollbar](https://codemirror.net/doc/manual.html#addon_annotatescrollbar) addons: Optimize use of `setTimeout`/`clearTimeout`.
### New features
New themes: [moxer](https://codemirror.net/demo/theme.html#moxer), [material-darker](https://codemirror.net/demo/theme.html#material-darker), [material-palenight](https://codemirror.net/demo/theme.html#material-palenight), [material-ocean](https://codemirror.net/demo/theme.html#material-ocean).
[xml mode](https://codemirror.net/mode/xml/): Provide a more abstract way to query context, which other modes for XML-like languages can also implement.
## 5.48.4 (2019-08-20)
### Bug fixes
Make default styles for line elements more specific so that they don't apply to all `<pre>` elements inside the editor.
Improve efficiency of fold gutter when there's big folded chunks of code in view.
Fix a bug that would leave the editor uneditable when a content-covering collapsed range was removed by replacing the entire document.
[julia mode](https://codemirror.net/mode/julia/): Support number separators.
[handlebars mode](https://codemirror.net/mode/handlebars/): Support triple-brace tags.
## 5.48.2 (2019-07-20)
### Bug fixes
[vim bindings](https://codemirror.net/demo/vim.html): Adjust char escape substitution to match vim, support `&/$0`.
[search addon](https://codemirror.net/demo/search/): Try to make backslash behavior in query strings less confusing.
[javascript mode](https://codemirror.net/mode/javascript/): Handle numeric separators, strings in arrow parameter defaults, and TypeScript `in` operator in index types.
Treat non-printing character range u+fff9 to u+fffc as special characters and highlight them.
[show-hint addon](https://codemirror.net/doc/manual.html#addon_show-hint): Fix positioning when the dialog is placed in a scrollable container.
### New features
Add [`selectLeft`](https://codemirror.net/doc/manual.html#mark_selectLeft)/[`selectRight`](https://codemirror.net/doc/manual.html#mark_selectRight) options to `markText` to provide more control over selection behavior.
[ruby mode](https://codemirror.net/mode/ruby): Fix indenting before closing brackets.
[vim bindings](https://codemirror.net/demo/vim.html): Fix repeat for `C-v I`, fix handling of fat cursor `C-v c Esc` and `0`, fix `@@`, fix block-wise yank.
### New features
[vim bindings](https://codemirror.net/demo/vim.html): Add support for `` ` `` text object.
## 5.46.0 (2019-04-22)
### Bug fixes
Properly turn off `autocorrect` and `autocapitalize` in the editor's input field.
Fix issue where calling [`swapDoc`](https://codemirror.net/doc/manual.html#swapDoc) during a mouse drag would cause an error.
Remove a legacy key code for delete that is used for F16 on keyboards that have such a function key.
[matchesonscrollbar addon](https://codemirror.net/doc/manual.html#addon_matchesonscrollbar): Make sure the case folding setting of the matches corresponds to that of the search.
[swift mode](https://codemirror.net/mode/swift): Fix handling of empty strings.
### New features
Allow [gutters](https://codemirror.net/doc/manual.html#option_gutters) to specify direct CSS strings.
## 5.45.0 (2019-03-20)
### Bug fixes
[closebrackets addon](https://codemirror.net/doc/manual.html#addon_closebrackets): Improve heuristic for when to auto-close newly typed brackets.
[vim bindings](https://codemirror.net/demo/vim.html): Ignore <code><</code> and <code>></code> when matching other brackets.
[sublime bindings](https://codemirror.net/demo/sublime.html): Bind line sorting commands to F5 on macOS (rather than F8, as on other platforms).
[julia mode](https://codemirror.net/mode/julia/): Fix bug that'd cause the mode get stuck.
### New features
New theme: [yoncé](https://codemirror.net/demo/theme.html#yonce).
[xml-hint addon](https://codemirror.net/doc/manual.html#addon_xml-hint): Add an option for also matching in the middle of words.
## 5.44.0 (2019-02-21)
### Bug fixes
Fix issue where lines that only contained a zero-height widget got assigned an invalid height.
Improve support for middle-click paste on X Windows.
Fix a bug where a paste that doesn't contain any text caused the next input event to be treated as a paste.
[show-hint addon](https://codemirror.net/doc/manual.html#addon_show-hint): Fix accidental global variable.
[javascript mode](https://codemirror.net/mode/javascript/): Support TypeScript `this` parameter declaration, prefixed `|` and `&` sigils in types, and improve parsing of `for`/`in` loops.
New theme: [nord](https://codemirror.net/demo/theme.html#nord).
## 5.43.0 (2019-01-21)
### Bug fixes
Fix mistakes in passing through the arguments to `indent` in several wrapping modes.
[javascript mode](https://codemirror.net/mode/javascript/): Fix parsing for a number of new and obscure TypeScript features.
[ruby mode](https://codemirror.net/mode/ruby): Support indented end tokens for heredoc strings.
### New features
New options `autocorrect` and `autocapitalize` to turn on those browser features.
## 5.42.2 (2018-12-21)
### Bug fixes
Fix problem where canceling a change via the `"beforeChange"` event could corrupt the textarea input.
Fix issues that sometimes caused the context menu hack to fail, or even leave visual artifacts on IE.
[vim bindings](https://codemirror.net/demo/vim.html): Make it possible to select text between angle brackets.
[css mode](https://codemirror.net/mode/css/): Fix tokenizing of CSS variables.
[python mode](https://codemirror.net/mode/python/): Fix another bug in tokenizing of format strings.
[soy mode](https://codemirror.net/mode/soy/): More accurate highlighting.
## 5.42.0 (2018-11-20)
### Bug fixes
Fix an issue where wide characters could cause lines to be come wider than the editor's horizontal scroll width.
Optimize handling of window resize events.
[show-hint addon](https://codemirror.net/doc/manual.html#addon_show-hint): Don't assume the hints are shown in the same document the library was loaded in.
[python mode](https://codemirror.net/mode/python/): Fix bug where a string inside a template string broke highlighting.
[swift mode](https://codemirror.net/mode/swift): Support multi-line strings.
### New features
The [`markText` method](https://codemirror.net/doc/manual.html#markText) now takes an [`attributes`](https://codemirror.net/doc/manual.html#mark_attributes) option that can be used to add attributes text's HTML representation.
[vim bindings](https://codemirror.net/demo/vim.html): Add support for the `=` binding.
## 5.41.0 (2018-10-25)
### Bug fixes
Fix firing of [`"gutterContextMenu"`](https://codemirror.net/doc/manual.html#event_gutterContextMenu) event on Firefox.
Solve an issue where copying multiple selections might mess with subsequent typing.
Don't crash when [`endOperation`](https://codemirror.net/doc/manual.html#endOperation) is called with no operation active.
[vim bindings](https://codemirror.net/demo/vim.html): Fix insert mode repeat after visualBlock edits.
[scheme mode](https://codemirror.net/mode/scheme/index.html): Improve highlighting of quoted expressions.
[soy mode](https://codemirror.net/mode/soy/): Support injected data and `@param` in comments.
[objective c mode](https://codemirror.net/mode/clike/): Improve conformance to the actual language.
### New features
A new [`selectionsMayTouch`](https://codemirror.net/doc/manual.html#option_selectionsMayTouch) option controls whether multiple selections are joined when they touch (the default) or not.
Fix firing of `gutterContextMenu` event on Firefox.
Add `hintWords` (basic completion) helper to [clojure](https://codemirror.net/mode/clojure/index.html), [mllike](https://codemirror.net/mode/mllike/index.html), [julia](https://codemirror.net/mode/julia/), [shell](https://codemirror.net/mode/shell/), and [r](https://codemirror.net/mode/r/) modes.
[clojure mode](https://codemirror.net/mode/clojure/index.html): Clean up and improve.
## 5.40.0 (2018-08-25)
### Bug fixes
[closebrackets addon](https://codemirror.net/doc/manual.html#addon_closebrackets): Fix issue where bracket-closing wouldn't work before punctuation.
[panel addon](https://codemirror.net/doc/manual.html#addon_panel): Fix problem where replacing the last remaining panel dropped the newly added panel.
[hardwrap addon](https://codemirror.net/doc/manual.html#addon_hardwrap): Fix an infinite loop when the indention is greater than the target column.
[jinja2](https://codemirror.net/mode/jinja2/) and [markdown](https://codemirror.net/mode/markdown/) modes: Add comment metadata.
### New features
New method [`phrase`](https://codemirror.net/doc/manual.html#phrase) and option [`phrases`](https://codemirror.net/doc/manual.html#option_phrases) to make translating UI text in addons easier.
## 5.39.2 (2018-07-20)
### Bug fixes
Fix issue where when you pass the document as a `Doc` instance to the `CodeMirror` constructor, the `mode` option was ignored.
Fix bug where line height could be computed wrong with a line widget below a collapsed line.
Fix overeager `.npmignore` dropping the `bin/source-highlight` utility from the distribution.
[show-hint addon](https://codemirror.net/doc/manual.html#addon_show-hint): Fix behavior when backspacing to the start of the line with completions open.
## 5.39.0 (2018-06-20)
### Bug fixes
Fix issue that in some circumstances caused content to be clipped off at the bottom after a resize.
[markdown mode](https://codemirror.net/mode/markdown/): Improve handling of blank lines in HTML tags.
### New features
[stex mode](https://codemirror.net/mode/stex/): Add an `inMathMode` option to start the mode in math mode.
## 5.38.0 (2018-05-21)
### Bug fixes
Improve reliability of noticing a missing mouseup event during dragging.
Make sure `getSelection` is always called on the correct document.
Fix interpretation of line breaks and non-breaking spaces inserted by renderer in contentEditable mode.
Work around some browsers inexplicably making the fake scrollbars focusable.
Make sure `coordsChar` doesn't return positions inside collapsed ranges.
[python mode](https://codemirror.net/mode/python/): Highlight expressions inside format strings.
### New features
[vim bindings](https://codemirror.net/demo/vim.html): Add support for '(' and ')' movement.
New themes: [idea](https://codemirror.net/demo/theme.html#idea), [ssms](https://codemirror.net/demo/theme.html#ssms), [gruvbox-dark](https://codemirror.net/demo/theme.html#gruvbox-dark).
## 5.36.0 (2018-03-20)
### Bug fixes
Make sure all document-level event handlers are registered on the document that the editor is part of.
Fix issue that prevented edits whose origin starts with `+` from being combined in history events for an editor-less document.
[multiplex addon](https://codemirror.net/demo/multiplex.html): Improve handling of indentation.
[merge addon](https://codemirror.net/doc/manual.html#addon_merge): Use CSS `:after` element to style the scroll-lock icon.
[javascript-hint addon](https://codemirror.net/doc/manual.html#addon_javascript-hint): Don't provide completions in JSON mode.
[show-hint addon](https://codemirror.net/doc/manual.html#addon_show-hint): Make `fromList` completion strategy act on the current token up to the cursor, rather than the entire token.
[markdown mode](https://codemirror.net/mode/markdown/): Fix a regexp with potentially exponental complexity.
### New features
New theme: [lucario](https://codemirror.net/demo/theme.html#lucario).
[match-highlighter addon](https://codemirror.net/doc/manual.html#addon_match-highlighter): Fix problem with matching words that have regexp special syntax in them.
[sql mode](https://codemirror.net/mode/sql/): Make it possible to disable backslash escapes in strings for dialects that don't have them, do this for MS SQL.
[javascript mode](https://codemirror.net/mode/javascript/): Recognize TypeScript type parameters for calls, type guards, and type parameter defaults. Improve handling of `enum` and `module` keywords.
[vim bindings](https://codemirror.net/demo/vim.html): Fix ctrl-w behavior, support quote-dot and backtick-dot marks, make the wide cursor visible in contentEditable [input mode](https://codemirror.net/doc/manual.html#option_contentEditable).
[javascript mode](https://codemirror.net/mode/javascript/): Fix bad parsing of operators without spaces between them. Fix some corner cases around semicolon insertion and regexps.
Modes added with [`addOverlay`](https://codemirror.net/doc/manual.html#addOverlay) now have access to a [`baseToken`](https://codemirror.net/doc/manual.html#baseToken) method on their input stream, giving access to the tokens of the underlying mode.
Mouse button clicks can now be bound in keymaps by using names like `"LeftClick"` or `"Ctrl-Alt-MiddleTripleClick"`. When bound to a function, that function will be passed the position of the click as second argument.
The behavior of mouse selection and dragging can now be customized with the [`configureMouse`](https://codemirror.net/doc/manual.html#option_configureMouse) option.
New [`pasteLinesPerSelection`](https://codemirror.net/doc/manual.html#option_pasteLinesPerSelection) option to control the behavior of pasting multiple lines into multiple selections.
[searchcursor addon](https://codemirror.net/doc/manual.html#addon_searchcursor): Support multi-line regular expression matches, and normalize strings when matching.
[comment addon](https://codemirror.net/doc/manual.html#addon_comment): Fix comment-toggling on a block of text that starts and ends in a (differnet) block comment.
[sass mode](https://codemirror.net/mode/sass/): Uses the full list of CSS properties and keywords from the CSS mode, rather than defining its own incomplete subset.
Positions now support a `sticky` property which determines whether they should be associated with the character before (value `"before"`) or after (value `"after"`) them.
[comment addon](https://codemirror.net/doc/manual.html#addon_comment): Support a per-mode <code>useInnerComments</code> option to optionally suppress descending to the inner modes to get comment strings.
[closebrackets addon](https://codemirror.net/doc/manual.html#addon_closebrackets): Add support for an `override` option to ignore language-specific defaults.
[panel addon](https://codemirror.net/doc/manual.html#addon_panel): Add a `stable` option that auto-scrolls the content to keep it in the same place when inserting/removing a panel.
Tapping/clicking the editor in [contentEditable mode](https://codemirror.net/doc/manual.html#option_inputStyle) on Chrome now puts the cursor at the tapped position.
Fix various crashes and misbehaviors when reading composition events in [contentEditable mode](https://codemirror.net/doc/manual.html#option_inputStyle).
The [`setGutterMarker`](https://codemirror.net/doc/manual.html#setGutterMarker), [`clearGutter`](https://codemirror.net/doc/manual.html#clearGutter), and [`lineInfo`](https://codemirror.net/doc/manual.html#lineInfo) methods are now available on `Doc` objects.
The [`heightAtLine`](https://codemirror.net/doc/manual.html#heightAtLine) method now takes an extra argument to allow finding the height at the top of the line's line widgets.
[javascript mode](https://codemirror.net/mode/javascript): Improve support for class expressions. Support TypeScript optional class properties, the `abstract` keyword, and return type declarations for arrow functions.
The core is now maintained as a number of small files, using ES6 syntax and modules, under the `src/` directory. A git checkout no longer contains a working `codemirror.js` until you `npm run build` (but when installing from NPM, it is included).
[javascript mode](https://codemirror.net/mode/javascript): Better indentation when semicolons are missing. Better support for TypeScript classes, optional parameters, and the `type` keyword.
The [`blur`](https://codemirror.net/doc/manual.html#event_blur) and [`focus`](https://codemirror.net/doc/manual.html#event_focus) events now pass the DOM event to their handlers.
[matchbrackets addon](https://codemirror.net/doc/manual.html#addon_matchbrackets): Fix bug where active highlighting was left in editor when the addon was disabled.
The [`addOverlay`](https://codemirror.net/doc/manual.html#addOverlay) method now supports a `priority` option to control the order in which overlays are applied.
Pasting [linewise-copied](https://codemirror.net/doc/manual.html#option_lineWiseCopyCut) content when there is no selection now inserts the lines above the current line.
[`posFromIndex`](https://codemirror.net/doc/manual.html#posFromIndex) and [`indexFromPos`](https://codemirror.net/doc/manual.html#indexFromPos) now take [`lineSeparator`](https://codemirror.net/doc/manual.html#option_lineSeparator) into account.
[placeholder addon](https://codemirror.net/doc/manual.html#addon_placeholder): No longer gets confused by [`swapDoc`](https://codemirror.net/doc/manual.html#swapDoc).
Fix [issue](https://github.com/codemirror/CodeMirror/issues/3781) where trying to scroll to a horizontal position outside of the document's width could cause the gutter to be positioned incorrectly.
Use absolute, rather than fixed positioning in the context-menu intercept hack, to work around a [problem](https://github.com/codemirror/CodeMirror/issues/3238) when the editor is inside a transformed parent container.
Solve a [problem](https://github.com/codemirror/CodeMirror/issues/3821) where the horizontal scrollbar could hide text in Firefox.
Fix a [bug](https://github.com/codemirror/CodeMirror/issues/3834) that caused phantom scroll space under the text in some situations.
[Markdown mode](https://codemirror.net/mode/markdown/): Fix [issue](https://github.com/codemirror/CodeMirror/issues/3787) where the mode would keep state related to fenced code blocks in an unsafe way, leading to occasional corrupted parses.
[XML mode](https://codemirror.net/mode/xml/): The mode now takes a `matchClosing` option to configure whether mismatched closing tags should be highlighted as errors.
* New modes: [JSX](https://codemirror.net/mode/jsx/index.html), [literate Haskell](https://codemirror.net/mode/haskell-literate/index.html)
* The editor now forwards more [DOM events](https://codemirror.net/doc/manual.html#event_dom): `cut`, `copy`, `paste`, and `touchstart`. It will also forward `mousedown` for drag events
* Modify the way [atomic ranges](https://codemirror.net/doc/manual.html#mark_atomic) are skipped by selection to try and make it less surprising.
* The [Swift mode](https://codemirror.net/mode/swift/index.html) was rewritten.
* New addon: [jump-to-line](https://codemirror.net/doc/manual.html#addon_jump-to-line).
* New method: [`isReadOnly`](https://codemirror.net/doc/manual.html#isReadOnly).
* The [show-hint addon](https://codemirror.net/doc/manual.html#addon_show-hint) now defaults to picking completions on single click.
* The object passed to [`"beforeSelectionChange"`](https://codemirror.net/doc/manual.html#event_beforeSelectionChange) events now has an `origin` property.
* New mode: [Crystal](https://codemirror.net/mode/crystal/index.html).
* Make [annotatescrollbar](https://codemirror.net/doc/manual.html#addon_annotatescrollbar) and scrollpastend addons work properly together
* Make [show-hint](https://codemirror.net/doc/manual.html#addon_show-hint) addon select options on single click by default, move selection to hovered item
* Fixes an infinite loop in the [hardwrap addon](https://codemirror.net/doc/manual.html#addon_hardwrap)
* New modes: [NSIS](https://codemirror.net/mode/nsis/index.html), [Ceylon](https://codemirror.net/mode/clike/index.html)
* The Kotlin mode is now a [clike](https://codemirror.net/mode/clike/index.html) dialect, rather than a stand-alone mode
* New option: [`allowDropFileTypes`](https://codemirror.net/doc/manual.html#option_allowDropFileTypes). Binary files can no longer be dropped into CodeMirror
* New themes: [bespin](https://codemirror.net/demo/theme.html#bespin), [hopscotch](https://codemirror.net/demo/theme.html#hopscotch), [isotope](https://codemirror.net/demo/theme.html#isotope), [railscasts](https://codemirror.net/demo/theme.html#railscasts)
* New modes: [Vue](https://codemirror.net/mode/vue/index.html), [Oz](https://codemirror.net/mode/oz/index.html), [MscGen](https://codemirror.net/mode/mscgen/index.html) (and dialects), [Closure Stylesheets](https://codemirror.net/mode/css/gss.html)
* Implement [CommonMark](http://commonmark.org)-style flexible list indent and cross-line code spans in [Markdown](https://codemirror.net/mode/markdown/index.html) mode
* Add a replace-all button to the [search addon](https://codemirror.net/doc/manual.html#addon_search), and make the persistent search dialog transparent when it obscures the match
* Handle `acync`/`await` and ocal and binary numbers in [JavaScript mode](https://codemirror.net/mode/javascript/index.html)
* Fix various issues with the [Haxe mode](https://codemirror.net/mode/haxe/index.html)
* Make the [closebrackets addon](https://codemirror.net/doc/manual.html#addon_closebrackets) select only the wrapped text when wrapping selection in brackets
* Tokenize properties as properties in the [CoffeeScript mode](https://codemirror.net/mode/coffeescript/index.html)
* The [placeholder addon](https://codemirror.net/doc/manual.html#addon_placeholder) now accepts a DOM node as well as a string placeholder
* New theme: [abcdef](https://codemirror.net/demo/theme.html#abcdef)
* Lines longer than [`maxHighlightLength`](https://codemirror.net/doc/manual.html#option_maxHighlightLength) are now less likely to mess up indentation
* New addons: [`autorefresh`](https://codemirror.net/doc/manual.html#addon_autorefresh) for refreshing an editor the first time it becomes visible, and `html-lint` for using [HTMLHint](http://htmlhint.com/)
* The [`search`](https://codemirror.net/doc/manual.html#addon_search) addon now recognizes `\r` and `\n` in pattern and replacement input
* New option: [`lineSeparator`](https://codemirror.net/doc/manual.html#option_lineSeparator) (with corresponding [method](https://codemirror.net/doc/manual.html#lineSeparator))
* New themes: [dracula](https://codemirror.net/demo/theme.html#dracula), [seti](https://codemirror.net/demo/theme.html#seti), [yeti](https://codemirror.net/demo/theme.html#yeti), [material](https://codemirror.net/demo/theme.html#material), and [icecoder](https://codemirror.net/demo/theme.html#icecoder)
* New modes: [Brainfuck](https://codemirror.net/mode/brainfuck/index.html), [VHDL](https://codemirror.net/mode/vhdl/index.html), Squirrel ([clike](https://codemirror.net/mode/clike/index.html) dialect)
* Define a `findPersistent` command in the [search](https://codemirror.net/demo/search.html) addon, for a dialog that stays open as you cycle through matches
* Fix several regressions in the [`show-hint`](https://codemirror.net/doc/manual.html#addon_show-hint) addon (`completeSingle` option, `"shown"` and `"close"` events)
* The [vim mode](https://codemirror.net/demo/vim.html) API was [documented](https://codemirror.net/doc/manual.html#vimapi)
* New modes: [ASN.1](https://codemirror.net/mode/asn.1/index.html), [TTCN](https://codemirror.net/mode/ttcn/index.html), and [TTCN-CFG](https://codemirror.net/mode/ttcn-cfg/index.html)
* The [clike](https://codemirror.net/mode/clike/index.html) mode can now deep-indent `switch` statements, and roughly recognizes types and defined identifiers
* New modes: [ASCII armor](https://codemirror.net/mode/asciiarmor/index.html) (PGP data), [Troff](https://codemirror.net/mode/troff/index.html), and [CMake](https://codemirror.net/mode/cmake/index.html).
* Remove SmartyMixed mode, rewrite [Smarty](https://codemirror.net/mode/smarty/index.html) mode to supersede it.
* New commands in the [merge addon](https://codemirror.net/doc/manual.html#addon_merge): `goNextDiff` and `goPrevDiff`.
* The [closebrackets addon](https://codemirror.net/doc/manual.html#addon_closebrackets) can now be configured per mode.
* The [`closetag`](https://codemirror.net/doc/manual.html#addon_closetag) addon now defines a `"closeTag"` command.
* Adds a `findModeByFileName` to the [mode metadata](https://codemirror.net/doc/manual.html#addon_meta) addon.
* [Simple mode](https://codemirror.net/demo/simplemode.html) rules can now contain a `sol` property to only match at the start of a line.
* New addon: [`selection-pointer`](https://codemirror.net/doc/manual.html#addon_selection-pointer) to style the mouse cursor over the selection.
* Improvements to the [Sass mode](https://codemirror.net/mode/sass/index.html)'s indentation.
* The [Vim keymap](https://codemirror.net/demo/vim.html)'s search functionality now supports [scrollbar annotation](https://codemirror.net/doc/manual.html#addon_matchesonscrollbar).
* Overhauled scroll bar handling. Add pluggable [scrollbar implementations](https://codemirror.net/demo/simplescrollbars.html).
* Tweaked behavior for the [completion addons](https://codemirror.net/doc/manual.html#addon_show-hint) to not take text after cursor into account.
* Two new optional features in the [merge addon](https://codemirror.net/doc/manual.html#addon_merge): aligning editors, and folding unchanged text.
* New modes: [Dart](https://codemirror.net/mode/dart/index.html), [EBNF](https://codemirror.net/mode/ebnf/index.html), [spreadsheet](https://codemirror.net/mode/spreadsheet/index.html), and [Soy](https://codemirror.net/mode/soy/index.html).
* New [addon](https://codemirror.net/demo/panel.html) to show persistent panels below/above an editor.
* New themes: [zenburn](https://codemirror.net/demo/theme.html#zenburn) and [tomorrow night bright](https://codemirror.net/demo/theme.html#tomorrow-night-bright).
* Built-in support for [multi-stroke key bindings](https://codemirror.net/doc/manual.html#normalizeKeyMap).
* New method: [`getLineTokens`](https://codemirror.net/doc/manual.html#getLineTokens).
* New modes: [dockerfile](https://codemirror.net/mode/dockerfile/index.html), [IDL](https://codemirror.net/mode/idl/index.html), [Objective C](https://codemirror.net/mode/clike/index.html) (crude).
* Support styling of gutter backgrounds, allow `"gutter"` styles in [`addLineClass`](https://codemirror.net/doc/manual.html#addLineClass).
* Many improvements to the [Vim mode](https://codemirror.net/demo/vim.html), rewritten visual mode.
* Improvements to modes: [gfm](https://codemirror.net/mode/gfm/index.html) (strikethrough), [SPARQL](https://codemirror.net/mode/sparql/index.html) (version 1.1 support), and [sTeX](https://codemirror.net/mode/stex/index.html) (no more runaway math mode).
***Incompatible**: The [lint addon](https://codemirror.net/demo/lint.html) now passes the editor's value as first argument to asynchronous lint functions, for consistency. The editor is still passed, as fourth argument.
* More mode improvements: [CoffeeScript](https://codemirror.net/mode/coffeescript/index.html) (indentation), [Verilog](https://codemirror.net/mode/verilog/index.html) (indentation), [Scala](https://codemirror.net/mode/clike/index.html) (indentation, triple-quoted strings), and [PHP](https://codemirror.net/mode/php/index.html) (interpolated variables in heredoc strings).
* New modes: [Textile](https://codemirror.net/mode/textile/index.html) and [Tornado templates](https://codemirror.net/mode/tornado/index.html).
* Experimental new [way to define modes](https://codemirror.net/demo/simplemode.html).
* Improvements to the [Vim bindings](https://codemirror.net/demo/vim.html): Arbitrary insert mode key mappings are now possible, and text objects are supported in visual mode.
* The mode [meta-information file](https://codemirror.net/mode/meta.js) now includes information about file extensions, and [helper functions](https://codemirror.net/doc/manual.html#addon_meta) `findModeByMIME` and `findModeByExtension`.
* Several [vim bindings](https://codemirror.net/demo/vim.html) improvements: search and exCommand history, global flag for `:substitute`, `:global` command.
* Allow hiding the cursor by setting [`cursorBlinkRate`](https://codemirror.net/doc/manual.html#option_cursorBlinkRate) to a negative value.
* Various improvements to [Shell](https://codemirror.net/mode/shell/index.html) (support for more syntax) and [Python](https://codemirror.net/mode/python/index.html) (better indentation) modes.
* New mode: [Cypher](https://codemirror.net/mode/cypher/index.html).
* New theme: [Neo](https://codemirror.net/demo/theme.html#neo).
* Support direct styling options (color, line style, width) in the [rulers](https://codemirror.net/doc/manual.html#addon_rulers) addon.
* Recognize per-editor configuration for the [show-hint](https://codemirror.net/doc/manual.html#addon_show-hint) and [foldcode](https://codemirror.net/doc/manual.html#addon_foldcode) addons.
* More intelligent scanning for existing close tags in [closetag](https://codemirror.net/doc/manual.html#addon_closetag) addon.
* In the [Vim bindings](https://codemirror.net/demo/vim.html): Fix bracket matching, support case conversion in visual mode, visual paste, append action.
*_Slightly incompatible_: The [`"cursorActivity"`](https://codemirror.net/doc/manual.html#event_cursorActivity) event now fires after all other events for the operation (and only for handlers that were actually registered at the time the activity happened).
* New command: [`insertSoftTab`](https://codemirror.net/doc/manual.html#command_insertSoftTab).
* New mode: [Django](https://codemirror.net/mode/django/index.html).
* Many small issues from the 3.x→4.x transition were found and fixed.
* Full [list of patches](https://github.com/codemirror/CodeMirror/compare/4.0.3...4.1.0).
## 3.24.0 (2014-04-22)
Merges the improvements from 4.1 that could easily be applied to the 3.x code. Also improves the way the editor size is updated when line widgets change.
* The [XML](https://codemirror.net/mode/xml/index.html) and [CSS](https://codemirror.net/mode/css/index.html) modes were largely rewritten. [LESS](https://codemirror.net/mode/css/less.html) support was added to the CSS mode.
* The OCaml mode was moved to an [mllike](https://codemirror.net/mode/mllike/index.html) mode, F# support added.
* Make it possible to fetch multiple applicable helper values with [`getHelpers`](https://codemirror.net/doc/manual.html#getHelpers), and to register helpers matched on predicates with [`registerGlobalHelper`](https://codemirror.net/doc/manual.html#registerGlobalHelper).
* New theme [pastel-on-dark](https://codemirror.net/demo/theme.html#pastel-on-dark).
* Better ECMAScript 6 support in [JavaScript](https://codemirror.net/mode/javascript/index.html) mode.
* New modes: [Fortran](https://codemirror.net/mode/fortran/index.html), [Octave](https://codemirror.net/mode/octave/index.html) (Matlab), [TOML](https://codemirror.net/mode/toml/index.html), and [DTD](https://codemirror.net/mode/dtd/index.html).
* New addons: [`css-lint`](https://codemirror.net/addon/lint/css-lint.js), [`css-hint`](https://codemirror.net/doc/manual.html#addon_css-hint).
* New themes: [Paraiso](https://codemirror.net/demo/theme.html#paraiso-dark) ([light](https://codemirror.net/demo/theme.html#paraiso-light)), [The Matrix](https://codemirror.net/demo/theme.html#the-matrix).
* Improved interaction between themes and [active-line](https://codemirror.net/doc/manual.html#addon_active-line)/[matchbrackets](https://codemirror.net/doc/manual.html#addon_matchbrackets) addons.
* New [folding](https://codemirror.net/doc/manual.html#addon_foldcode) function `CodeMirror.fold.comment`.
* New modes: [Jade](https://codemirror.net/mode/jade/index.html), [Nginx](https://codemirror.net/mode/nginx/index.html).
* New addons: [Tern](https://codemirror.net/demo/tern.html), [matchtags](https://codemirror.net/doc/manual.html#addon_matchtags), and [foldgutter](https://codemirror.net/doc/manual.html#addon_foldgutter).
* New addons: [trailing space highlight](https://codemirror.net/doc/manual.html#addon_trailingspace), [XML completion](https://codemirror.net/doc/manual.html#addon_xml-hint) (rewritten), and [diff merging](https://codemirror.net/doc/manual.html#addon_merge).
* [`markText`](https://codemirror.net/doc/manual.html#markText) and [`addLineWidget`](https://codemirror.net/doc/manual.html#addLineWidget) now take a `handleMouseEvents` option.
* New methods: [`lineAtHeight`](https://codemirror.net/doc/manual.html#lineAtHeight), [`getTokenTypeAt`](https://codemirror.net/doc/manual.html#getTokenTypeAt).
* More precise cleanness-tracking using [`changeGeneration`](https://codemirror.net/doc/manual.html#changeGeneration) and [`isClean`](https://codemirror.net/doc/manual.html#isClean).
* Many extensions to [Emacs](https://codemirror.net/demo/emacs.html) mode (prefixes, more navigation units, and more).
* New events [`"keyHandled"`](https://codemirror.net/doc/manual.html#event_keyHandled) and [`"inputRead"`](https://codemirror.net/doc/manual.html#event_inputRead).
* Various improvements to [Ruby](https://codemirror.net/mode/ruby/index.html), [Smarty](https://codemirror.net/mode/smarty/index.html), [SQL](https://codemirror.net/mode/sql/index.html), and [Vim](https://codemirror.net/demo/vim.html) modes.
* New modes: [COBOL](https://codemirror.net/mode/cobol/index.html) and [HAML](https://codemirror.net/mode/haml/index.html).
* New options: [`cursorScrollMargin`](https://codemirror.net/doc/manual.html#option_cursorScrollMargin) and [`coverGutterNextToScrollbar`](https://codemirror.net/doc/manual.html#option_coverGutterNextToScrollbar).
* New addon: [commenting](https://codemirror.net/doc/manual.html#addon_comment).
* More features added to the [Vim keymap](https://codemirror.net/demo/vim.html).
* New mode: [GNU assembler](https://codemirror.net/mode/gas/index.html).
* New options: [`maxHighlightLength`](https://codemirror.net/doc/manual.html#option_maxHighlightLength) and [`historyEventDelay`](https://codemirror.net/doc/manual.html#option_historyEventDelay).
* Added [`addToHistory`](https://codemirror.net/doc/manual.html#mark_addToHistory) option for `markText`.
***Removed code:**`collapserange`, `formatting`, and `simple-hint` addons. `plsql` and `mysql` modes (use [`sql`](https://codemirror.net/mode/sql/index.html) mode).
***Moved code:** the range-finding functions for folding now have [their own files](https://codemirror.net/addon/fold/).
***Changed interface:** the [`continuecomment`](https://codemirror.net/doc/manual.html#addon_continuecomment) addon now exposes an option, rather than a command.
* New modes: [SCSS](https://codemirror.net/mode/css/scss.html), [Tcl](https://codemirror.net/mode/tcl/index.html), [LiveScript](https://codemirror.net/mode/livescript/index.html), and [mIRC](https://codemirror.net/mode/mirc/index.html).
* New addons: [`placeholder`](https://codemirror.net/demo/placeholder.html), [HTML completion](https://codemirror.net/demo/html5complete.html).
* New methods: [`hasFocus`](https://codemirror.net/doc/manual.html#hasFocus), [`defaultCharWidth`](https://codemirror.net/doc/manual.html#defaultCharWidth).
* New events: [`beforeCursorEnter`](https://codemirror.net/doc/manual.html#event_beforeCursorEnter), [`renderLine`](https://codemirror.net/doc/manual.html#event_renderLine).
* Many improvements to the [`show-hint`](https://codemirror.net/doc/manual.html#addon_show-hint) completion dialog addon.
* Move all add-ons into an organized directory structure under [`/addon`](https://codemirror.net/addon/). **You might have to adjust your paths.**
* New modes: [D](https://codemirror.net/mode/d/index.html), [Sass](https://codemirror.net/mode/sass/index.html), [APL](https://codemirror.net/mode/apl/index.html), [SQL](https://codemirror.net/mode/sql/index.html) (configurable), and [Asterisk](https://codemirror.net/mode/asterisk/index.html).
* Make documents a [first-class construct](https://codemirror.net/doc/manual.html#api_doc), support split views and subviews.
* Add a [new module](https://codemirror.net/doc/manual.html#addon_show-hint) for showing completion hints. Deprecate `simple-hint.js`.
* Extend [htmlmixed mode](https://codemirror.net/mode/htmlmixed/index.html) to allow custom handling of script types.
* Support an `insertLeft` option to [`setBookmark`](https://codemirror.net/doc/manual.html#setBookmark).
* Add an [`eachLine`](https://codemirror.net/doc/manual.html#eachLine) method to iterate over a document.
* New addon modules: [selection marking](https://codemirror.net/demo/markselection.html), [linting](https://codemirror.net/demo/lint.html), and [automatic bracket closing](https://codemirror.net/demo/closebrackets.html).
* Add [`"beforeChange"`](https://codemirror.net/doc/manual.html#event_beforeChange) and [`"beforeSelectionChange"`](https://codemirror.net/doc/manual.html#event_beforeSelectionChange) events.
* Add [`"hide"`](https://codemirror.net/doc/manual.html#event_hide) and [`"unhide"`](https://codemirror.net/doc/manual.html#event_unhide) events to marked ranges.
* Fix [`coordsChar`](https://codemirror.net/doc/manual.html#coordsChar)'s interpretation of its argument to match the documentation.
* New modes: [Turtle](https://codemirror.net/mode/turtle/index.html) and [Q](https://codemirror.net/mode/q/index.html).
* Further improvements to the [vim mode](https://codemirror.net/demo/vim.html).
**New major version**. Only partially backwards-compatible. See the [upgrading guide](https://codemirror.net/doc/upgrade_v3.html) for more information. Changes since release candidate 2:
Integrate some bugfixes, enhancements to the vim keymap, and new modes ([D](https://codemirror.net/mode/d/index.html), [Sass](https://codemirror.net/mode/sass/index.html), [APL](https://codemirror.net/mode/apl/index.html)) from the v3 branch.
* New mode: [SQL](https://codemirror.net/mode/sql/index.html) (will replace [plsql](https://codemirror.net/mode/plsql/index.html) and [mysql](https://codemirror.net/mode/mysql/index.html) modes).
* Add a [`CodeMirror.version`](https://codemirror.net/doc/manual.html#version) property.
* More robust handling of nested modes in [formatting](https://codemirror.net/demo/formatting.html) and [closetag](https://codemirror.net/demo/closetag.html) plug-ins.
* Un/redo now preserves [marked text](https://codemirror.net/doc/manual.html#markText) and bookmarks.
* New mode: [Sieve](https://codemirror.net/mode/sieve/index.html).
* New [`getViewPort`](https://codemirror.net/doc/manual.html#getViewport) and [`onViewportChange`](https://codemirror.net/doc/manual.html#option_onViewportChange) API.
* New modes: [OCaml](https://codemirror.net/mode/ocaml/index.html), [Haxe](https://codemirror.net/mode/haxe/index.html), and [VB.NET](https://codemirror.net/mode/vb/index.html).
* Add a [`setSize`](https://codemirror.net/doc/manual.html#setSize) method for programmatic resizing.
* Add [`getHistory`](https://codemirror.net/doc/manual.html#getHistory) and [`setHistory`](https://codemirror.net/doc/manual.html#setHistory) methods.
* Allow custom line separator string in [`getValue`](https://codemirror.net/doc/manual.html#getValue) and [`getRange`](https://codemirror.net/doc/manual.html#getRange).
* New modes: [Shell](https://codemirror.net/mode/shell/index.html), [Tiki wiki](https://codemirror.net/mode/tiki/index.html), [Pig Latin](https://codemirror.net/mode/pig/index.html).
* New themes: [Ambiance](https://codemirror.net/demo/theme.html#ambiance), [Blackboard](https://codemirror.net/demo/theme.html#blackboard).
* More control over drag/drop with [`dragDrop`](https://codemirror.net/doc/manual.html#option_dragDrop) and [`onDragEvent`](https://codemirror.net/doc/manual.html#option_onDragEvent) options.
* Extend [`charCoords`](https://codemirror.net/doc/manual.html#charCoords) and [`cursorCoords`](https://codemirror.net/doc/manual.html#cursorCoords) with a `mode` argument.
* Slightly incompatible API changes. Read [this](https://codemirror.net/doc/upgrade_v2.2.html).
* New approach to [binding](https://codemirror.net/doc/manual.html#option_extraKeys) keys, support for [custom bindings](https://codemirror.net/doc/manual.html#option_keyMap).
* Add support for [line wrapping](https://codemirror.net/doc/manual.html#option_lineWrapping) and [code folding](https://codemirror.net/doc/manual.html#hideLine).
* Add a [`coordsFromIndex`](https://codemirror.net/doc/manual.html#coordsFromIndex) method.
***API change**: `setValue` now no longer clears history. Use [`clearHistory`](https://codemirror.net/doc/manual.html#clearHistory) for that.
***API change**: [`markText`](https://codemirror.net/doc/manual.html#markText) now returns an object with `clear` and `find` methods. Marked text is now more robust when edited.
Add a [theme](https://codemirror.net/doc/manual.html#option_theme) system ([demo](https://codemirror.net/demo/theme.html)). Note that this is not backwards-compatible—you'll have to update your styles and modes!
CodeMirror 2 is a complete rewrite that's faster, smaller, simpler to use, and less dependent on browser quirks. See [this](https://codemirror.net/doc/internals.html) and [this](http://groups.google.com/group/codemirror/browse_thread/thread/5a8e894024a9f580) for more information.