MacOS Sierra下如何修改或添加方括号「[ ]」的键盘快捷键？

Hey there! Customizing keyboard shortcuts for frequently used symbols like square brackets is such a smart move to boost your programming workflow—totally feel your pain with the clunky Alt+Shift+( combo on macOS Sierra. Here are two solid ways to set up your preferred Cmd+( shortcut:

This uses built-in macOS tools, so no need to install anything:

• Open Automator (found in your Applications folder) and select "Service" when prompted to create a new document.
• At the top of the workflow window, set "Service receives" to no input and "in" to any application.
• In the left-hand action library, search for "Run AppleScript" and drag it into the right-hand workflow area.
• Replace the default AppleScript code with this snippet:

tell application "System Events"
    keystroke "[" using command down
end tell

• Press Cmd + S to save the service—name it something clear like "Insert Left Square Bracket".
• Head to System Preferences > Keyboard > Shortcuts > Services, find your new service, click the empty space next to it, and press Cmd + ( to assign the shortcut.
• Pro tip: If the shortcut is already in use, macOS will alert you—you can either reassign the conflicting shortcut or pick a slightly different combo.

If you want more control (like app-specific shortcuts or multiple key remaps), Karabiner-Elements is the go-to tool for macOS keyboard customization (just make sure you grab a version compatible with Sierra):

• Install Karabiner-Elements and open the app.
• Navigate to the Complex Modifications tab, then click "Add rule".
• You can either search for a pre-made square bracket remap rule or create your own:
  • Click "Create a new rule" and name it something like "Cmd + ( → Left Square Bracket".
  • Under "From key", select ( and check the "Command" modifier box.
  • Under "To key", select [ (no modifiers needed).
  • Save the rule and toggle it on.
• Now Cmd + ( will directly input [—you can even set this rule to only apply to your favorite IDEs if you want.

Quick Notes #

• For the Automator method to work, you may need to grant Automator access in System Preferences > Security & Privacy > Privacy > Accessibility.
• Always test your new shortcut in your coding app first to make sure it doesn't conflict with existing IDE shortcuts (like indentation or code folding).

内容的提问来源于stack exchange，提问作者Beno