Re: Function for deleting a key binding in a sparse keymap

[Lennart Borgman]

Stefan Monnier wrote:

> > > > The next time I enter that minor mode the key definitions outside may
> > > > however be different so I want to remove the key bindings I added when
> > > > exiting the minor mode.
> > > >        
> > > Why not set them to nil?
> > >      
> > They should have the default value in those cases.  A workaround is of
> > course to set them to the default value.
> >    
>
> What default value?  Please, make your concrete example concrete.
>
>
>  
I feel a bit stupid because this example is not terribly important. 
However this is what I do. There is a minor mode where I use this, 
bw-window-resize-mode. When entering this mode I do:

       (mapc (lambda(key)
               (define-key bw-keymap (vector key) nil))
             help-event-list)

I set the "help keys" to nil so that the help is still available during 
resizing. Those are the keys I want to remove afterwards. The default 
value in the sparse keymap bw-keymap is:

      (define-key bw-keymap [t]  'bw-exit-resize-mode)

Since Richard just decided that this part of the window resizing is new 
and therefore should not go with our next release it is of less 
importance now. However I do believe that it still would be good to add 
that function (see subject line) now.