Re: confusion with defining keys

[Stefan Monnier]

> (global-set-key "\C-ä" 'undo)

This should ideally signal an error, because "\C-ä" is an invalid string
(a string can only contains chars and C-ä is not a char but
a "char combined with a modifier").  For historical reasons this doesn't
signal an error, but it doesn't do what you want.  Use either (kbd
"C-ä") or [?\C-ä].
In general, I recommend never to use the plain "..." notation for key
sequences: it made sense back in the Emacs-18 days when it was
introduced, but it's been a "legacy" since Emacs-19.


        Stefan