From: Stefan Monnier <monnier@iro.umontreal.ca>
To: emacs-devel@gnu.org
Subject: Re: A simple implementation of context-sensitive keys
Date: Wed, 10 Sep 2008 13:49:48 -0400 [thread overview]
Message-ID: <jwvprnbevzt.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87y72079mg.fsf@thinkpad.tsdh.de> (Tassilo Horn's message of "Wed, 10 Sep 2008 09:17:27 +0200")
> So I've come up with this macro, which creates such a dispatching
> command automagically. If none of the context predicates match, the
> default command bound to the key will be executed.
Another way to get a similar result is:
(define-key <map> <key> '(menu-item "dummy" <binding>
:filter (lambda (binding)
(when <condition> binding))))
It's tempting to use the :enable property instead of :filter, but sadly,
the :enable property is only obeyed by the menu-construction code, not
by the key-lookup code.
In any case, the main problem with such things (whichever way they're
implemented) is that the rest of Emacs doesn't know and/or expect such
condition bindings, so C-h k gives only partial information, and
similarly where-is doesn't know how to tell the whole story.
Stefan
next prev parent reply other threads:[~2008-09-10 17:49 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-10 7:17 A simple implementation of context-sensitive keys Tassilo Horn
2008-09-10 10:36 ` Lennart Borgman (gmail)
2008-09-10 10:57 ` Tassilo Horn
2008-09-10 16:43 ` Ted Zlatanov
2008-09-10 14:14 ` Sean O'Rourke
2008-09-10 14:48 ` Miles Bader
2008-09-10 14:53 ` Juanma Barranquero
2008-09-10 15:17 ` Sean O'Rourke
2008-09-10 15:32 ` Juanma Barranquero
2008-09-11 7:35 ` Tassilo Horn
2008-09-11 8:17 ` Miles Bader
2008-09-11 8:48 ` Tassilo Horn
2008-09-10 17:49 ` Stefan Monnier [this message]
2008-09-10 19:21 ` Tassilo Horn
2008-09-11 1:41 ` Stefan Monnier
2008-09-11 7:17 ` Tassilo Horn
2008-09-11 14:40 ` Ted Zlatanov
2008-09-11 15:53 ` Tassilo Horn
2008-09-11 13:41 ` Lennart Borgman (gmail)
2008-09-11 13:48 ` Lennart Borgman (gmail)
2008-09-11 14:22 ` Tassilo Horn
2008-09-11 20:38 ` Lennart Borgman (gmail)
2008-09-12 6:58 ` Tassilo Horn
2008-09-12 8:34 ` Lennart Borgman (gmail)
2008-09-12 9:47 ` Tassilo Horn
2008-09-12 11:00 ` Lennart Borgman
2008-09-12 16:13 ` Tassilo Horn
2008-09-12 23:46 ` Lennart Borgman (gmail)
2008-09-13 7:28 ` Tassilo Horn
2008-09-13 9:32 ` Lennart Borgman (gmail)
2008-09-15 7:26 ` Tassilo Horn
2008-09-15 22:39 ` Lennart Borgman (gmail)
2008-09-11 20:44 ` Stefan Monnier
2008-09-11 21:14 ` Lennart Borgman (gmail)
2008-09-12 1:33 ` Stefan Monnier
2008-09-12 8:29 ` Lennart Borgman (gmail)
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