OnEdit User Guide

Get Started

• Choose File > New Tab (⌘T) to create a document.
• Choose File > Open... (⌘O) or drag a file into the window.
• Choose File > Open Folder... (⇧⌘O) to set a workspace.
• Choose File > Open Recent to reopen files.
• Use the sidebar segmented control to switch between Files and Bookmarks.

Workspaces and Tabs

• Choose File > New Window (⌘N) for a separate workspace.
• Close a tab with ⌘W; close all tabs with ⌥⌘W.
• Control-click a tab for Close Other Tabs and Close Tabs to the Right.
• The main window restores tabs and the workspace on launch.

Editing

• OnEdit edits plain text; rich text is converted on paste.
• Syntax highlighting is applied automatically by file extension.
• Toggle line numbers with View > Show Line Numbers (⇧⌘L) or the editor context menu.
• Press Option (⌥) or ⌥⌘C to toggle Column Selection Mode; press again to exit.
• Drag to select a column block; typing edits multiple lines at once.
• Column Selection Mode is also available in Edit > Column Selection Mode and the editor context menu.
• Format Document (⌘L) supports JSON and C-style languages.
• Use the toolbar Text Options to change font, size, and text color.

Search & Replace

Preview & Media

• Media files (images, videos, audio) open in a dedicated preview tab.
• Drag files into the editor to insert their file path (images/videos render a preview if supported).
• WebP and SVG files are fully supported.

Bookmarks & Recents

• Press ⌘D or click the bookmark icon in the toolbar to bookmark a file.
• The "Recents" section in the sidebar tracks your last 10 opened files.
• Bookmarks are persisted across app launches.

Tools

• Sort Lines: Sort selected lines alphabetically (ascending/descending).
• Remove Duplicate Lines: Clean up lists instantly.
• Change Case: Convert selection to Upper Case, Lower Case, or Title Case.

Appearance

• Switch themes in View > Theme (Light, Dark, System).
• Toggle "Vibrancy" (glass effect) in the View menu.
• Editor background textures (Paper, Wood, Iron) are available in View > Texture.

Status Bar

• Located at the bottom of the window, it shows:
  • Line/Column position
  • Selection character count
  • Current file encoding (e.g., UTF-8)
  • Texture selector shortcut

Syntax Highlighting

• Supported languages include: Swift, Python, JavaScript, TypeScript, HTML, CSS, JSON, Markdown, YAML, XML, SQL, C, C++, Ruby, PHP, Java, Go, Rust, and Shell Script.
• The editor auto-detects language based on file extension.
• Manually change language via View > Syntax.

Troubleshooting

• A file opens in preview and can't be edited: Some formats are preview-only. Convert to a text format to edit.
• File access prompts: Files outside your workspace require permission the first time you open them. Choose File > Open or drag the file into the window.
• Format Document doesn't change anything: Formatting currently targets JSON and C-style languages.