CotEditor for Mac

What's new in this version:

New Features:
- Add the Ada syntax

Improved:
- Add CSS HWB and 4-digit hexadecimal alpha formats to the Edit Color Code command, and allow it to read modern space-separated CSS RGB/HSL color codes
- Support spaces between menu path components in Quick Actions search
- Support shebangs with options for syntax detection
- Improve line sorting commands to better preserve existing mixed line endings
- Limit tree-sitter-based syntax highlighting to 100,000,000 characters to avoid unexpected crashes
- Update the Markdown syntax to fix highlighting block quotes
- Update the Unicode block name list for the character inspector from Unicode 16.0.0 to Unicode 17.0.0
- Update tree-sitter-c to 0.24.2
- Update tree-sitter-swift to 0.7.2
- Improve overall stability and performance
- [trivial] Improve insertion format editors in the Snippet settings pane
- [dev] Update the build environment to Xcode 26.5.0

Fixed:
- Fix an issue where customized built-in syntaxes could be ignored when their file mappings conflicted with other built-in syntaxes
- Fix an issue where text near the end of a very large document could fail to appear when hanging indentation was enabled
- Fix an issue where text following an emoji tag sequence could be rendered as missing glyphs
- Fix an issue where deleting by word or to the beginning of a line could delete text outside the selection
- Fix an issue where selecting a word could select an incorrect range
- Fix an issue where Sort by Pattern could reorder lines that do not contain the specified sort key
- Fix an issue where dropping text clippings or File Drop snippets could insert extra text when their line endings differed from the document’s
- Fix an issue where File Drop snippets could omit the domain from dropped web URLs
- Fix an issue where the Restore Defaults button in File Drop settings could remain disabled even when the current settings differed from the defaults
- Fix an issue where opening multiple documents at once could open them in separate windows even when window tabbing was set to Automatically
- Fix an issue where opening multiple documents while an empty untitled document was open could show some documents before replacing the empty document
- Fix an issue where canceling or failing to open a document could leave an empty untitled document behind
- Fix an issue where text encoding and read-only options in the Open dialog could be unavailable when selecting files together with folders
- Fix an issue where syntax-specific snippets and scripts could remain scoped to the previous document after switching documents in the file browser
- Fix an issue where the Document inspector could keep showing the previous document path after closing a document in the file browser
- Fix an issue where opening the original folder of an alias from the file browser could fail after requesting file access permission
- Fix an issue where opening a UTF-16 or UTF-32 document with a BOM using a byte-order-specific encoding could leave the BOM in the document text
- Fix an issue where converting a document to a non-UTF-8 encoding with AppleScript’s BOM option could add an invalid UTF-8 BOM
- Fix an issue where encoding detection could prioritize a later encoding declaration over the first one found in the document
- Fix an issue where custom syntax highlighting could crash when a begin/end regular expression matched zero-length text at the end of the document
- Fix an issue where an unterminated begin/end string pattern could prevent later custom syntax highlighting from being applied
- Fix an issue where a malformed custom syntax definition with empty delimiters or empty highlight patterns could make syntax highlighting hang
- Fix an issue where tree-sitter-based syntax highlighting could become misaligned after editing around consecutive empty lines or a trailing line ending
- Fix an issue where importing settings could incorrectly show an error for a custom theme included in the same settings archive
- Fix issues in the Color Code window where it could stop updating or insert invalid color codes
- Fix an issue where Advanced Character Count could show outdated or incorrect results
- Fix an issue where Unicode input could reject or show some valid Unicode code points as invalid
- Fix an issue where the incompatible character list in the Warnings inspector could lose its sort order after rescanning the document
- Fix an issue where the hidden Close Split Editor button in the navigation bar could remain available when the editor was not split
- Fix an issue where sidebar commands could show incorrect states, and the sidebar could reappear after leaving Versions
- Fix typos in German and some other localizations