CotEditor for Mac

What's new in this version:

Compatibility Changes:
- Introduce CotEditor Syntax, a new syntax definition format. The legacy YAML-based syntax definition format is now deprecated, and user-created syntaxes are automatically migrated on first launch.

New Features:
- Adopt smarter syntax parsing powered by tree-sitter for multiple built-in syntaxes, improving syntax highlighting and outline extraction in C, C#, C++, CSS, Go, HTML, Java, JavaScript, Kotlin, LaTeX, Lua, Makefile, Markdown (outline extraction only), PHP, Python, Ruby, Rust, Scala, Shell Script, SQL, Swift, and TypeScript
- Display symbolic icons next to outline items
- Allow collapsing outline items in the Outline inspector for tree-sitter-based and structured document syntaxes
- Add the “Wrap Lines” option to the Outline inspector
- Make smart indentation aware of the current syntax
- Expand comment delimiter settings in syntax definitions, allowing multiple delimiters and related options
- Add detailed delimiter settings for strings, characters, and indentation to syntax definitions
- Add the Multiline option to highlighting rules in syntax definitions so matches can span multiple lines
- Show the current position in search results in the Find field while navigating between matches, for example, “2/5”
- Add CurrentLine and ReplaceCurrentLine to the UNIX script input/output keywords for editing the current line in the editor
- Add Bulgarian localization

Improved:
- Update the inspector’s appearance on macOS Tahoe 26
- Improve the syntax-highlighting algorithm for legacy regex-based parsing
- Update built-in syntaxes
- Use the user’s window size setting for the Zoom action, if available
- Improve word selection and related editing actions to treat commas as word delimiters
- Improve general text-editing performance
- Hide line numbers in the window titlebar area when the navigation bar is hidden on macOS Tahoe 26
- [trivial] Improve stability when handling file change conflicts
- [trivial] Adjust the About CotEditor window
- [trivial] Rename the Recolor All command to “Reset Syntax Analysis” and move it to the Format menu
- [trivial] Remove the Restore Defaults button in the syntax editor
- [trivial] Tweak colors of the default Anura theme
- [non-AppStore ver.] Update Sparkle from 2.9.0 to 2.9.1

Fixed:
- Fix incorrect syntax parsing in some built-in syntaxes
- Fix an issue where the default file extension in the Save dialog was .txt for syntaxes with a file extension not registered in the system
- Fix an issue where TSV multiple replace definitions could fail to overwrite an existing definition when re-imported
- Fix an issue where TSV multiple replace definitions could not import empty replacement strings
- Fix an issue where key bindings imported from a settings archive could be lost after relaunching the app
- Fix issues in the file browser where items could point to the wrong location after being moved or renamed
- Fix an issue in the file browser where replacing a file with a folder, or vice versa, could leave the displayed state outdated
- Fix an issue in the file browser where newly created or duplicated items could fail to become selected immediately in some folders
- Fix issues where the Script menu could become outdated after changes in the Scripts folder
- Fix an issue where line reordering commands could insert extra blank lines in documents using CRLF line endings
- Fix an issue where AppleScript could return an unclear error when a folder document had no current document
- Fix an issue where requesting a zero-length text range via AppleScript could return an unintended character
- Fix an issue where some decimal setting values could use the wrong number format and be reset unexpectedly in certain locale configurations
- [trivial] Fix an issue where a renamed setting could become deselected if surrounding whitespace in the new name is trimmed
- [trivial] Fix some typos in localizations and user guides