CotEditor

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

system requirements: macOS 14 and later

New Features

• Support Writing Tools with Apple Intelligence.

Improvements

• [beta] Adjust the window's appearance.
• [beta] Show icon image for alias files selected in the file browser.
• [beta] Add the Czech, Dutch, French, and Portuguese localizations for strings newly added in CotEditor 5.0.0.

Fixes

• [beta] Fix an issue that UNIX scripts failed to get the document object displayed in a window with the folder browser.
• [beta.3] Fix an issue that the editor unwontedly selects the nearest outline item when the Outline inspector is shown.

system requirements: macOS 14 and later

New Features

• [beta] Preview non-plain-text files.
• [beta] Support Quick Look in the file browser.

Improvements

• Update C++ syntax (Thanks to Léo Natan!).
• [beta] Add the Sidebar submenu to the View menu.
• [beta] Improve the VoiceOver support in the sidebar.
• [beta] Enable selecting multiple items in the file browser.
• [beta] Restore the filename to the original one when the filename edited in the file browser is invalid.
• [beta] Avoid opening with CotEditor itself when performing the “Open with External Editor” command in the file browser.
• [beta] Copy dropped fi

system requirements: macOS 14 and later

Improvements

• [trivial] Better numbering when adding a new setting whose name is the same as an existing one.
• [beta] Add the Duplicate and Share actions to the context menu for the sidebar.
• [bata] Make items in the sidebar copyable.
• [beta] Restore the expansion state of folders in the sidebar from the last session.
• [beta] Improve hidden file handling in the sidebar.
• [beta] Improve alias file handling in the sidebar.
• [beta] Enable opening directories from the cot command.
• [beta] Change the subtitle of document windows with the sidebar from the relative file path to the filename.

system requirements: macOS 14 and later

New Features

• Support macOS 15 Sequoia.
• Open folders in CotEditor and browse the folder contents from the new sidebar to switch documents.
• [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