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From: Miles Bader <miles@gnu.org>
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Subject: Re: How do you use a number as an argument to global-set-key?
Date: Tue, 21 Apr 2009 15:13:16 +0900
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formido <formido@gmail.com> writes:
> I want to use the numbers above the keyboard in 'global-set-key',
> e.g., have a command trigger with C-2. "\C-2" doesn't work. What does?

Use a vector instead of a string (strings can only contain a limited
subset of keys).

E.g.: (global-set-key [?\C-2] 'foo)

-Miles

-- 
Quotation, n. The act of repeating erroneously the words of another. The words
erroneously repeated.