Re: elisp mouse programming problems

[Kevin Rodgers <ihs_4664@yahoo.com>]

David Vanderschel wrote:

> "Kevin Rodgers" <ihs_4664@yahoo.com> wrote in message
> news:3F4504F2.60600@yahoo.com...
> 
>>David Vanderschel wrote:
>>
> 
>>>I think I have now figured this one out.  Changing the
>>>mode-map itself is not sufficient.  You must again
>>>invoke (use-local-map whatever-mode-map).
>>>
> 
> 
>>That is not true.  As Alex explained, when you modify the keymap, you
>>are modifying a part of its list structure that is shared by the
>>variable and the mode.
>>
> 
> 
> Then I still do not understand how to get emacs to use
> the revised keymap.  For one thing I am not modifying
> _the_ keymap - I am creating a new one.


Ah, I didn't realize that.

> I am sorry if
> I am being a bit dense here.  I think the implication
> must be that replacing the map pointed to by my
> variable still leaves the system with a pointer to the
> old cdr.


Sorry, I was the dense one.  You are correct.

> So are you saying that it is essential to
> replace the cdr _in_ the old list, as opposed to
> replacing the entire list itself?
> 
> Eg., (setf (cdr my-map) (cdr new-map)), as opposed to
> (setq my-map new-map).

> 
> Why wouldn't invoking use-local-map again also
> accomplish the same goal?

It would.


-- 
Kevin Rodgers