CotEditor

system requirements: macOS 14 and later

New Features

• Display Finder tags in the document inspector and the file browser.

Improvements

• [beta] Update the Korean and Polish localizations for strings newly added in CotEditor 5.1.0.

Known Issue

• The texts added in CotEditor 5.1.0 are not localized yet in Dutch.

Full Changelog: 5.1.0-beta...5.1.0-beta.2

system requirements: macOS 14 and later

New Features

• Append the nearest unique ancestor folder name to the document title if multiple documents with the same name are opened.
• The new “prevent editing” command that prevents documents from being unintentionally edited.
• Introduce the new AppleScript parameter editable to document objects.
• Introduce the --readonly (-r) option to the cot command-line tool to open documents as read-only.
• Read input from the standard input when the cot command-line tool is used with the - option.

Improvements

• Improve th

system requirements: macOS 14 and later

Improvements

• Add missing localization of Unicode block names.

Fixes

• Fix an issue where the text fields in the syntax editor could restore the contents after the input under certain conditions.
• Fix a potential crash that rarely occurs when interacting with the Quick Action bar.

Full Changelog: 5.0.7...5.0.8

system requirements: macOS 14 and later

New Features

• Add title and timestamp options to the AppleScript’s write to console command.

Improvements

• Provide more Unicode information about the selected character in the document inspector.
• Prevent the console from hiding when the app goes into the background.
• Optimize the file browser’s performance when expanding a folder containing a large number of items.
• Improve the trimming of whitespaces in the extracted outline labels.
• Modify the syntax highlighting rule to extract strings in the form of “begin-end” string pairs, even if one of those is escaped.
• Adjust the editor’s initial scroll position.
• [trivial] Update the layout of the Donatio

system requirements: macOS 14 and later

New Features

• Display information about the selected image in the preview view for the file browser.
• Add the “Add period with double-space” option to the Mode setting options (deselected by default).
• Add the toolbar item for Writing Tools to the toolbar customization options (only for macOS 15.2 and later and when the Writing Tools feature is available).

Improvements

• Allow insertion points only at the same number of wrapped lines by rectangular selection.
• Allow selections only at the same number of wrapped lines by selecting the column up/down.
• Update the document’s syntax based on the filename when renaming it in the file browser.
• Always open a file as a plain-text document if its file ext

system requirements: macOS 14 and later

Improvements

• [trivial] Omit commands in the Debug (ladybug) menu from the results of the Quick Action bar.

Fixes

• Fix crashing when opening the Print dialog.

Full Changelog: 5.0.4...5.0.5

system requirements: macOS 14 and later

Improvements

• Update the Swift syntax to add @Bindable, @ViewLoading, and @WindowLoading attributes.
• [trivial] Rename “Move Focus” commands.
• [trivial] Focus on the first input field when opening a dialog.

Fixes

• Fix an issue in the file browser that the actions in the Add button were disabled when the focus is out of the browser.
• Fix an issue that the document window position was not saved in some cases.
• Fix insertion format editors’ behavior in the Snippet settings.
• [trivial] Fix links in the Licenses pane in the About window.

Full Changelog: 5.0.3...5.0.4

system requirements: macOS 14 and later

Improvements

• Expand folder items by double-clicking a folder row in the file browser.
• Directly open .plist files from the file browser instead of previewing.
• Improve alias file handling in the file browser.

Fixes

• Fix an issue that the application crashes when an editor is opened while the Font window appears.
• Fix an issue that the document window size was not properly saved.

Full Changelog: 5.0.2...5.0.3

system requirements: macOS 14 and later

New Features

• Add Polish localization (Thanks to Rafał Kopicki!).

Improvements

• Add .awk extension to file types treaded as CotEditor script.
• Adjust the layout of the file preview view.
• Update the Swift syntax to add @Test and @Suite attributes.

Fixes

• Fix an issue that the file encoding menu disappeared from the status bar.
• Fix an issue that document windows were not properly initialized when the windows minimized on launch.
• Fix an issue in the file browser that duplicate folders were displayed after renaming a folder.
• Fix an issue in the file browser that some actions for the root folder were incorrectly disabled.

system requirements: macOS 14 and later

Improvements

• Add the “Open as Plain Text” button the preview view for the file browser.
• Open a file selected in the file browser as plain text when the default app set in the Finder for it is CotEditor.
• Optimize the performance of the folder browser.

Fixes

• Fix an issue on macOS 14 that the app crashed when opening a folder containing archive files.
• Fix an issue that the file/folder in the file browser was not removed even when it was deleted in the actual file storage.
• Fix an issue that the indent style detection was not applied.
• Fix the display of the What’s New window in CJK localizations.
• [AppStore ver.] Fix an issue that the Donation settings pane displayed an unnecessary aler

system requirements: macOS 14 and later

New Features

• Folder Navigation: Open folders in CotEditor and browse their contents from the new sidebar to switch documents.
• Support macOS 15 Sequoia.
• Support Writing Tools with Apple Intelligence.
• [AppStore ver.] Now, the user can donate to the CotEditor project via in-app purchase in the new Donate settings pane.
• Add new “Select Enclosing Symbols” and “Split Selection by Lines” commands to the Edit > Select menu.
• Add new “Show in Finder” command to the File menu.
• Add new “Create Document in CotEditor” shortcut action.
• Add the “Highlight” color to the CotEditor theme format.
• Support the alpha channel for the current line in theme settings.
• Add Korean localization (Thanks to M