How to set tmux hotkey as Ctrl-, that is, Ctrl+comma

commactrlhotkeystmux

I've got some trouble when setting my preferred tmux hotkey on Mac OS X.

The most common hotkeys that invokes tmux's magics are CTRL+A and CTRL+B. But I would rather select other keystrokes for the following reasons: C-a is the global hot key for "jumping to the beginning of a line"; C–b is for "moving backward on a line" and "Page UP in Vim". I don't want to break these nice rules in tmux.

So, I try to set some non-so-frequently-used keystrokes for tmux hotkey. What I choose is CTRL–, , CTRL–., or CTRL–;

I write this statement in my .tmux.conf file:

set-option -g prefix C-,

I start tmux. Oh, it says "bad key". I replace C-, with C-. or C-;. It doesn't work either.

So, how can I set tmux hotkey to CTRL–,?

Best Answer

Had to dig into the source code for this one. The control key can only be applied to letters, @, space and ? (and C-@ seems to be equivalent to C-space). Sorry, doesn't look like C-, is possible, at least in tmux-1.6.

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