I have a Mac (specifically Snow Leopard), so I'm used to Cmd+* to do things. My mail, for bold, underline, and italics, uses Ctrl+b/u/i instead of Cmd+b/u/i. How can I remap these three key combinations for one application only, or do something similar?

  • 2
    I think it might help if we new what Mail application you are using -- maybe there is a way to tweak that instead?
    – kalaracey
    Commented Aug 18, 2011 at 22:10
  • It's Prism, which is based on Firefox, and my webmail (Project Phoenix from AOL). I hadn't thought of this, but could GreaseMonkey or something similar help me out here?
    – zpletan
    Commented Aug 18, 2011 at 22:17
  • Could something like this serve as the basis for a solution: userscripts.org/scripts/show/9539? Added greasemonkey tag.
    – zpletan
    Commented Aug 19, 2011 at 12:30
  • bump! I need this too for Remote Desktop for Mac! I've swapped CTRL and COMMAND system-wide in the Keyboard Preferences (under Modifiers) so the keyboard more closely matches Windows, but then RDP re-reverses them making my Windows now act like the Mac keyboard! Ugh! Commented Dec 15, 2011 at 4:38
  • 1
    @Frobbit, as Daniel Beck mentions above, comments do not bump topics here. Additionally, the answer I would recommend for you would be user495470's. If this does not work, that's the start of a new question you can ask, I think.
    – zpletan
    Commented Feb 11, 2016 at 17:17

1 Answer 1


I don't know about Prism or web applications, but for normal OS X applications there's the Keyboard Shortcuts preferences:

You can also modify the property list that stores the shortcuts directly with something like:

defaults write com.apple.mail NSUserKeyEquivalents -dict-add "New Message" "@Y"
  • The problem is, there's no menu entry, so I can't bind a custom keyboard shortcut to it.
    – zpletan
    Commented Aug 19, 2011 at 12:07
  • Lri, could you explain the link you posted? It looks really cool but ... I don't quite understand what it does
    – kalaracey
    Commented Aug 25, 2011 at 14:53
  • @kalaracey The whole script is a bit off-topic so you could've posted the comment for the Gist instead. But I edited it to contain a sample text file.
    – Lri
    Commented Aug 25, 2011 at 15:14
  • Hey @Lri, your link seems to be down. Can you re-upload your file? Commented Dec 15, 2011 at 4:39
  • @MarquelV Sorry, I removed the Gist after posting the script on my website at lri.me/appshortcuts.
    – Lri
    Commented Dec 15, 2011 at 16:15

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