As the title says, whenever I repeat the ⌘ key it triggers a copy command (just as if I pressed ⌘C). I can even see the "Edit" menu entry blinking when I do that. This happens system-wide.

I checked OS X's shortcuts under System Preferences > Keyboard > Shortcuts, but there's nothing there. I also checked other apps, like BetterTouchTool, but it's not defined in any of them.

This started happening a couple of months ago and I'm going a bit crazy with this. Is there any way I can know which app is creating / assigning each shortcut? That could massively help narrowing it down.

Thank you!

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    Keyboard shortcuts are often set per user account. Do other user accounts have similar issues? Have you tried to restore the keyboard shortcuts to their default settings? (System preferences -> Keyboard -> Shortcuts 'Restore Defaults') Commented Sep 27, 2014 at 17:38
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    There is only one user account, mine. I've tried setting the shortcuts to their default settings, yes, but to no avail. I think a 3rd-party app is causing this, although I can't for the life of me figure out which one. Commented Sep 29, 2014 at 11:17
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    You can create a new user... This might help debugging this problem. Commented Sep 29, 2014 at 12:56
  • do you have a program or extension that modifies your clipboard in some way? perhaps that program has an internal means of setting a keyboard shortcut. Commented Oct 30, 2014 at 21:08

1 Answer 1


You may get some luck if you download and install CheatSheet - it builds a list of shortcuts for the current application, so you may be able to track it down by working through your apps with that.

  • I think this is a good suggestion to anyone hitting the same problem, so I accepted it. Eventually I did a clean install for Yosemite and the problem went away though :) Commented Dec 2, 2014 at 15:57

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