Version 5.25.0

### Bug fixes

In contentEditable-mode, properly locate changes that repeat a character when inserted with IME.

Fix handling of selections bigger than the viewport in contentEditable mode.

Improve handling of changes that insert or delete lines in contentEditable mode.

Count Unicode control characters 0x80 to 0x9F as special (non-printing) chars.

Fix handling of shadow DOM roots when finding the active element.

Add `role=presentation` to more DOM elements to improve screen reader support.

[merge addon](http://codemirror.net/doc/manual.html#addon_merge): Make aligning of unchanged chunks more robust.

[comment addon](http://codemirror.net/doc/manual.html#addon_comment): Fix comment-toggling on a block of text that starts and ends in a (differnet) block comment.

[javascript mode](http://codemirror.net/mode/javascript/): Improve support for TypeScript syntax.

[r mode](http://codemirror.net/mode/r/): Fix indentation after semicolon-less statements.

[shell mode](http://codemirror.net/mode/shell/): Properly handle escaped parentheses in parenthesized expressions.

[markdown mode](http://codemirror.net/mode/markdown/): Fix a few bugs around leaving fenced code blocks.

[soy mode](http://codemirror.net/mode/soy/): Improve indentation.

### New features

[lint addon](http://codemirror.net/doc/manual.html#addon_lint): Support asynchronous linters that return promises.

[continuelist addon](http://codemirror.net/doc/manual.html#addon_continuelist): Support continuing task lists.

[vim bindings](http://codemirror.net/mode/demo/vim.html): Make Y behave like yy.

[sql mode](http://codemirror.net/mode/sql/): Support sqlite dialect.

Version 5.24.2

### Bug fixes

[javascript mode](http://codemirror.net/mode/javascript/): Support computed class method names.

[merge addon](http://codemirror.net/doc/manual.html#addon_merge): Improve aligning of unchanged code in the presence of marks and line widgets.

Version 5.24.0

### Bug fixes

A cursor directly before a line-wrapping break is now drawn before or after the line break depending on which direction you arrived from.

Visual cursor motion in line-wrapped right-to-left text should be much more correct.

Fix bug in handling of read-only marked text.

[shell mode](http://codemirror.net/mode/shell/): Properly tokenize nested parentheses.

[python mode](http://codemirror.net/mode/python/): Support underscores in number literals.

[sass mode](http://codemirror.net/mode/sass/): Uses the full list of CSS properties and keywords from the CSS mode, rather than defining its own incomplete subset.

[css mode](http://codemirror.net/mode/css/): Expose `lineComment` property for LESS and SCSS dialects. Recognize vendor prefixes on pseudo-elements.

[julia mode](http://codemirror.net/mode/julia/): Properly indent `elseif` lines.

[markdown mode](http://codemirror.net/mode/markdown/): Properly recognize the end of fenced code blocks when inside other markup.

[scala mode](http://codemirror.net/mode/clike/): Improve handling of operators containing <code>#</code>, <code>@</code>, and <code>:</code> chars.

[xml mode](http://codemirror.net/mode/xml/): Allow dashes in HTML tag names.

[javascript mode](http://codemirror.net/mode/javascript/): Improve parsing of async methods, TypeScript-style comma-separated superclass lists.

[indent-fold addon](http://codemirror.net/demo/folding.html): Ignore comment lines.

### New features

Positions now support a `sticky` property which determines whether they should be associated with the character before (value `"before"`) or after (value `"after"`) them.

[vim bindings](http://codemirror.net/mode/demo/vim.html): Make it possible to remove built-in bindings through the API.

[comment addon](http://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.

### Breaking changes

The [sass mode](http://codemirror.net/mode/sass/) now depends on the [css mode](http://codemirror.net/mode/css/).

Version 5.23.0

### Bug fixes

Presentation-related elements DOM elements are now marked as such to help screen readers.

[markdown mode](http://codemirror.net/mode/markdown/): Be more picky about what HTML tags look like to avoid false positives.

### New features

`findModeByMIME` now understands `+json` and `+xml` MIME suffixes.

[closebrackets addon](http://codemirror.net/doc/manual.html#addon_closebrackets): Add support for an `override` option to ignore language-specific defaults.

[panel addon](http://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.

Version 5.22.0

### Bug fixes

[sublime bindings](http://codemirror.net/demo/sublime.html): Make `selectBetweenBrackets` work with multiple cursors.

[javascript mode](http://codemirror.net/mode/javascript/): Fix issues with parsing complex TypeScript types, imports, and exports.

A contentEditable editor instance with autofocus enabled no longer crashes during initializing.

### New features

[emacs bindings](http://codemirror.net/demo/emacs.html): Export `CodeMirror.emacs` to allow other addons to hook into Emacs-style functionality.

[active-line addon](http://codemirror.net/doc/manual.html#addon_active-line): Add `nonEmpty` option.

New event: [`optionChange`](http://codemirror.net/doc/manual.html#event_optionChange).

Release 5.21.0

### Bug fixes

Tapping/clicking the editor in [contentEditable mode](http://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](http://codemirror.net/doc/manual.html#option_inputStyle).

Catches and ignores an IE 'Unspecified Error' when creating an editor in an iframe before there is a `<body>`.

[merge addon](http://codemirror.net/doc/manual.html#addon_merge): Fix several issues in the chunk-aligning feature.

[verilog mode](http://codemirror.net/mode/verilog): Rewritten to address various issues.

[julia mode](http://codemirror.net/mode/julia): Recognize Julia 0.5 syntax.

[swift mode](http://codemirror.net/mode/swift): Various fixes and adjustments to current syntax.

[markdown mode](http://codemirror.net/mode/markdown): Allow lists without a blank line above them.

### New features

The [`setGutterMarker`](http://codemirror.net/doc/manual.html#setGutterMarker), [`clearGutter`](http://codemirror.net/doc/manual.html#clearGutter), and [`lineInfo`](http://codemirror.net/doc/manual.html#lineInfo) methods are now available on `Doc` objects.

The [`heightAtLine`](http://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.

[ruby mode](http://codemirror.net/mode/ruby): `else` and `elsif` are now immediately indented.

[vim bindings](http://codemirror.net/demo/vim.html): Bind Ctrl-T and Ctrl-D to in- and dedent in insert mode.

Release 5.20.2

### Bug fixes

Fix `CodeMirror.version` returning the wrong version number.

Release 5.20.0

### Bug fixes

Make `newlineAndIndent` command work with multiple cursors on the same line.

Make sure keypress events for backspace are ignored.

Tokens styled with overlays no longer get a nonsense `cm-cm-overlay` class.

Line endings for pasted content are now normalized to the editor's [preferred ending](http://codemirror.net/doc/manual.html#option_lineSeparator).

[javascript mode](http://codemirror.net/mode/javascript): Improve support for class expressions. Support TypeScript optional class properties, the `abstract` keyword, and return type declarations for arrow functions.

[css mode](http://codemirror.net/mode/css): Fix highlighting of mixed-case keywords.

[closebrackets addon](http://codemirror.net/doc/manual.html#addon_closebrackets): Improve behavior when typing a quote before a string.

### New features

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 build` (but when installing from NPM, it is included).

The [`refresh`](http://codemirror.net/doc/manual.html#event_refresh) event is now documented and stable.

Release 5.19.0

### Bugfixes

[erlang mode](http://codemirror.net/mode/erlang): Fix mode crash when trying to read an empty context.

[comment addon](http://codemirror.net/doc/manual.html#addon_comment): Fix broken behavior when toggling comments inside a comment.

xml-fold addon: Fix a null-dereference bug.

Page up and page down now do something even in single-line documents.

Fix an issue where the cursor position could be off in really long (~8000 character) tokens.

### New features

[javascript mode](http://codemirror.net/mode/javascript): Better indentation when semicolons are missing. Better support for TypeScript classes, optional parameters, and the `type` keyword.

The [`blur`](http://codemirror.net/doc/manual.html#event_blur) and [`focus`](http://codemirror.net/doc/manual.html#event_focus) events now pass the DOM event to their handlers.

Release 5.18.2

### Bugfixes

[vue mode](http://codemirror.net/mode/vue): Fix outdated references to renamed Pug mode dependency.

Version 5.18.0

### Bugfixes

Make sure [gutter backgrounds](http://codemirror.net/doc/manual.html#addLineClass) stick to the rest of the gutter during horizontal scrolling.

The contenteditable [`inputStyle`](http://codemirror.net/doc/manual.html#option_inputStyle) now properly supports pasting on pre-Edge IE versions.

[javascript mode](http://codemirror.net/mode/javascript): Fix some small parsing bugs and improve TypeScript support.

[matchbrackets addon](http://codemirror.net/doc/manual.html#addon_matchbrackets): Fix bug where active highlighting was left in editor when the addon was disabled.

[match-highlighter addon](http://codemirror.net/doc/manual.html#addon_match-highlighter): Only start highlighting things when the editor gains focus.

[javascript-hint addon](http://codemirror.net/doc/manual.html#addon_javascript-hint): Also complete non-enumerable properties.

### New features

The [`addOverlay`](http://codemirror.net/doc/manual.html#addOverlay) method now supports a `priority` option to control the order in which overlays are applied.

MIME types that end in `+json` now default to the JSON mode when the MIME itself is not defined.

### Breaking changes

The mode formerly known as Jade was renamed to [Pug](http://codemirror.net/mode/pug).

The [Python mode](http://codemirror.net/mode/python) now defaults to Python 3 (rather than 2) syntax.

Release 5.17.0

### Bugfixes

Fix problem with wrapped trailing whitespace displaying incorrectly.

Prevent IME dialog from overlapping typed content in Chrome.

Improve measuring of characters near a line wrap.

[javascript mode](http://codemirror.net/mode/javascript): Improve support for `async`, allow trailing commas in `import` lists.

[vim bindings](http://codemirror.net/demo/vim.html): Fix backspace in replace mode.

[sublime bindings](http://codemirror.net/demo/sublime.html): Fix some key bindings on OS X to match Sublime Text.

### New features

[markdown mode](http://codemirror.net/mode/markdown): Add more classes to image links in highlight-formatting mode.

Release 5.16.0

### Bugfixes

Fix glitches when dragging content caused by the drop indicator receiving mouse events.

Make Control-drag work on Firefox.

Make clicking or selection-dragging at the end of a wrapped line select the right position.

[show-hint addon](http://codemirror.net/doc/manual.html#addon_show-hint): Prevent widget scrollbar from hiding part of the hint text.

[rulers addon](http://codemirror.net/doc/manual.html#addon_rulers): Prevent rulers from forcing a horizontal editor scrollbar.

### New features

[search addon](http://codemirror.net/doc/manual.html#addon_search): Automatically bind search-related keys in persistent dialog.

[sublime keymap](http://codemirror.net/demo/sublime.html): Add a multi-cursor aware smart backspace binding.

# 5.15.2 (2016-05-20)

## Bugfixes

Fix a critical document corruption bug that occurs when a document is gradually grown.

## Bugfixes

Fix bug that caused the selection to reset when focusing the editor in contentEditable input mode.

Fix issue where not all ASCII control characters were being replaced by placeholders.

Remove the assumption that all modes have a `startState` method from several wrapping modes.

Fix issue where the editor would complain about overlapping collapsed ranges when there weren't any.

Optimize document tree building when loading or pasting huge chunks of content.

[markdown mode](http://codemirror.net/mode/markdown/): Fix several issues in matching link targets.

[clike mode](http://codemirror.net/mode/clike/): Improve indentation of C++ template declarations.

## New features

Explicitly bind Ctrl-O on OS X to make that binding (“open line”) act as expected.

Pasting [linewise-copied](http://codemirror.net/doc/manual.html#option_lineWiseCopyCut) content when there is no selection now inserts the lines above the current line.

[javascript mode](http://codemirror.net/mode/javascript/): Support `async`/`await` and improve support for TypeScript type syntax.

Version 5.14.2

### Bugfixes

Push a new package to NPM due to an [NPM bug](https://github.com/npm/npm/issues/5082) omitting the LICENSE file in 5.14.0.

Set `dataTransfer.effectAllowed` in `dragstart` handler to help browsers use the right drag icon.

Add the [mbox mode](http://codemirror.net/mode/mbox/index.html) to `mode/meta.js`.

#
# Write a message for tag:
#   5.14.2
# Lines starting with '#' will be kept; you may remove them yourself if you want to.

## Release 5.14.0

### Bugfixes

[`posFromIndex`](http://codemirror.net/doc/manual.html#posFromIndex) and [`indexFromPos`](http://codemirror.net/doc/manual.html#indexFromPos) now take [`lineSeparator`](http://codemirror.net/doc/manual.html#option_lineSeparator) into account.

[vim bindings](http://codemirror.net/demo/vim.html): Only call `.save()` when it is actually available.

[commend addon](http://codemirror.net/doc/manual.html#addon_comment): Be careful not to mangle multi-line strings.

[Python mode](http://codemirror.net/mode/python/index.html): Improve distinguishing of decorators from `@` operators.

[`findMarks`](http://codemirror.net/doc/manual.html#findMarks): No longer return marks that touch but don't overlap given range.

### New features

[vim bindings](http://codemirror.net/demo/vim.html): Add yank command.

[match-highlighter addon](http://codemirror.net/doc/manual.html#addon_match-highlighter): Add `trim` option to disable ignoring of whitespace.

[PowerShell mode](http://codemirror.net/mode/powershell/index.html): Added.

[Yacas mode](http://codemirror.net/mode/yacas/index.html): Added.

[Web IDL mode](http://codemirror.net/mode/webidl/index.html): Added.

[SAS mode](http://codemirror.net/mode/sas/index.html): Added.

[mbox mode](http://codemirror.net/mode/mbox/index.html): Added.