Re: Shift selection using interactive spec

[M Jared Finder]

Richard Stallman wrote:
>     Yes, but the problem here is rather that you may need to redefine which 
>     commands should deactivate the mark. Doing that with a symbol property 
>     makes it much more flexible.
>
> Why is it important to be able change whether a command deactivates
> the mark without changing the command itself?
>   
It'd be a disaster to have to restate the whole command or even just the 
interactive spec to make commands CUA-mode aware.  Right now, if I am 
using an external package that is not fully CUA-mode aware (like 
CC-mode), all I need to do is:
> (let ((move-fns '(c-forward-conditional c-backward-conditional
>                   c-down-conditional c-up-conditional
>                   c-down-conditional-with-else
>                   c-up-conditional-with-else
>                   c-beginning-of-statement c-end-of-statement)))
>   (require 'cua-base)
>   (dolist (symbol move-fns)
>     (unless (eq 'move (get symbol 'CUA))
>       (display-warning 'emacs (format "Adding CUA property to `%s'." 
> symbol))
>       (setf (get symbol 'CUA) 'move))))
If I had to restate the interactive spec, this would not be nearly as 
easy.  Please, listen to the users of CUA-mode and do *not* make this 
any harder.

 -- MJF