Re: defcustom :type to use for a key sequence?

[Lennart Borgman <lennart.borgman.073@student.lu.se>]

Kim F. Storm wrote:

>storm@cua.dk (Kim F. Storm) writes:
>
>  
>
>>With my suggestion, you just write C-g -- much simpler and equally flexible.
>>
>>A user must know a lot about internal representation -- with my suggestion,
>>he just has to do C-h c to learn how to write the keys he's interested in
>>and copy the output directly to the field.
>>    
>>
>
>
>There is already a :type key-sequence (defined as a restricted-sexp),
>but it is only used in one place:
>
>M-x customize-variable RET mouse-region-delete-keys RET
>
>.. which seems to be completely broken when I try it.
>E.g. if I press one of the "INS" buttons strange things happen.
>
>
>I still think it would make a lot of sense to make :type key-sequence
>edit a string rather than a sexp.
>
>The actual value would still be a vector or string, but before editing
>it would be passed through "key-description" to give the string to
>edit, and after editing the string would be passed through "kbd" (aka
>"read-kbd-macro") to make the value to save in the variable.
>
>It would be great if there was some way to actually press the keys
>to insert, rather than to have to spell them out -- is there some
>way to bind a key to have a special meaning while editing such a string?
>E.g. to add C-M-S-$ to the string, one could press e.g. C-u C-M-S-$
>  
>
I do not think it is implemented now, but it would be rather easy to do 
I believe. Just add a keymap to the field where you enter the keys. But 
it seems a little bit more complicated to edit it, but not at all 
impossible.