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I was reading the a vim tips page and stumbled across <C-O>. How do I enter that on my keyboard? (I'm on a mac)

kilojoules
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2 Answers2

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In Vim (and Emacs) documentation, C- and M- stand for Ctrl and Meta (i.e. Alt) respectively. So C-O is CtrlO.

u1686_grawity
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In documentation C- refers to the Control key Ctrl on a PC, or the Command key ⌘ on a Mac. It is pressed and held while the key after the C- is pressed, in your case ⌘ + O.

AFH
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  • Most terminal applications inherited from the greater Unix-like world use the Control key on the Mac as well, not the Command key. This includes Vim. MacVim (the thirdparty build that provides a gui and is generally more up to date than the Vim that Apple provides built-in), does *add* some shortcuts that use the Command key, but it does not change standard Vim commands from Control to Command. – 8bittree Apr 05 '17 at 19:45
  • Vim actually has specific syntax for the Command key: ``. This isn't MacVim specific, I've verified its presence in `:help key-notation` in Vim on Cygwin and native Windows. – 8bittree Apr 05 '17 at 20:24
  • @8bittree - The Macs I've worked with didn't have a Control key and needed to use the Command key instead. Maybe the latest Macs have both, in which case thanks for the information. – AFH Apr 05 '17 at 21:14
  • Well now I'm curious what Macs you've been using that didn't have Control keys. Apple's keyboards seem to have consistently had Control keys for at least a couple decades. – 8bittree Apr 05 '17 at 22:15
  • @8bittree - I've never used them in earnest, but only ever dabbled, so I have no real recollection of what models. It is certainly some time since I did so, possibly predating OS-X. – AFH Apr 05 '17 at 22:33