RE: Cannot use "\C-!" in a string in Emacs 22?

[Drew Adams]

    > (define-key my-map "\C-!" 'my-cmd), which works in Emacs 20, but
    > gives this error in Emacs 22: "Invalid modifier in string".
    
    It worked under Emacs-20, but returned the same as "\C-a"

Thanks.

    In Emacs-21 this was fixed to return an error
    
    > I settled on (define-key my-map [C-!] 'my-cmd) - it seems to
    > work for key bindings in both versions.
    
    You probably meant to use (define-key my-map [?\C-!] 'my-cmd)

That's what I meant. Sorry for the typo.

    I'd recommend (define-key my-map [(control ?!)] 'my-cmd)
    
OK. Thanks.