* How do I get rid of a face defined with defface?
@ 2019-07-20 13:19 Alan Mackenzie
2019-07-20 13:58 ` Eli Zaretskii
2019-07-20 21:56 ` Noam Postavsky
0 siblings, 2 replies; 6+ messages in thread
From: Alan Mackenzie @ 2019-07-20 13:19 UTC (permalink / raw)
To: help-gnu-emacs
Hello, Emacs.
In CC Mode, some debug faces are generated with, e.g.,
(defface c-debug-is-sws-face ....)
. Certain macros generate additional code when, e.g.,
(facep 'c-debuf-is-sws-face)
holds.
I now want to turn off these debugging facilities, and to get these
macros to generate just the normal code, I need to get rid of the face
c-debug-is-sws-face. I can't find any mention in the manual of how to
do this (this may be a manual bug), nor any statement that it is not
possible (again, a possible manual bug).
So, can I get rid of this face? If so, how? Whether or not, where is
the spot in the manual saying so?
Thanks in advance for the help!
--
Alan Mackenzie (Nuremberg, Germany).
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: How do I get rid of a face defined with defface?
2019-07-20 13:19 How do I get rid of a face defined with defface? Alan Mackenzie
@ 2019-07-20 13:58 ` Eli Zaretskii
2019-07-20 14:05 ` Stefan Monnier
2019-07-20 21:56 ` Noam Postavsky
1 sibling, 1 reply; 6+ messages in thread
From: Eli Zaretskii @ 2019-07-20 13:58 UTC (permalink / raw)
To: help-gnu-emacs
> Date: Sat, 20 Jul 2019 13:19:51 +0000
> From: Alan Mackenzie <acm@muc.de>
>
> In CC Mode, some debug faces are generated with, e.g.,
>
> (defface c-debug-is-sws-face ....)
That line is commented out in the current sources. And
list-faces-display doesn't show it.
> . Certain macros generate additional code when, e.g.,
>
> (facep 'c-debuf-is-sws-face)
>
> holds.
>
> I now want to turn off these debugging facilities, and to get these
> macros to generate just the normal code, I need to get rid of the face
> c-debug-is-sws-face. I can't find any mention in the manual of how to
> do this (this may be a manual bug), nor any statement that it is not
> possible (again, a possible manual bug).
How to do what? get rid of a face that isn't defined in the first
place? You don't need to do anything, I think.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: How do I get rid of a face defined with defface?
2019-07-20 13:58 ` Eli Zaretskii
@ 2019-07-20 14:05 ` Stefan Monnier
2019-07-20 14:10 ` Eli Zaretskii
0 siblings, 1 reply; 6+ messages in thread
From: Stefan Monnier @ 2019-07-20 14:05 UTC (permalink / raw)
To: help-gnu-emacs
> How to do what?
I think he wants to *undefine* a face in the running session.
Like Alan I neither know how to do that nor whether it can be done.
Stefan
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: How do I get rid of a face defined with defface?
2019-07-20 14:05 ` Stefan Monnier
@ 2019-07-20 14:10 ` Eli Zaretskii
0 siblings, 0 replies; 6+ messages in thread
From: Eli Zaretskii @ 2019-07-20 14:10 UTC (permalink / raw)
To: help-gnu-emacs
> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Date: Sat, 20 Jul 2019 10:05:06 -0400
>
> > How to do what?
>
> I think he wants to *undefine* a face in the running session.
You can't, AFAIK.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: How do I get rid of a face defined with defface?
2019-07-20 13:19 How do I get rid of a face defined with defface? Alan Mackenzie
2019-07-20 13:58 ` Eli Zaretskii
@ 2019-07-20 21:56 ` Noam Postavsky
2019-07-21 2:30 ` Eli Zaretskii
1 sibling, 1 reply; 6+ messages in thread
From: Noam Postavsky @ 2019-07-20 21:56 UTC (permalink / raw)
To: Alan Mackenzie; +Cc: Help Gnu Emacs mailing list
On Sat, 20 Jul 2019 at 09:19, Alan Mackenzie <acm@muc.de> wrote:
> . Certain macros generate additional code when, e.g.,
>
> (facep 'c-debuf-is-sws-face)
>
> holds.
> So, can I get rid of this face? If so, how? Whether or not, where is
> the spot in the manual saying so?
Based on the code that facep calls, I came up with this:
(setq face-new-frame-defaults
(assq-delete-all 'c-debug-is-sws-face face-new-frame-defaults))
which seems to work.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: How do I get rid of a face defined with defface?
2019-07-20 21:56 ` Noam Postavsky
@ 2019-07-21 2:30 ` Eli Zaretskii
0 siblings, 0 replies; 6+ messages in thread
From: Eli Zaretskii @ 2019-07-21 2:30 UTC (permalink / raw)
To: Noam Postavsky; +Cc: acm, help-gnu-emacs
> From: Noam Postavsky <npostavs@gmail.com>
> Date: Sat, 20 Jul 2019 17:56:16 -0400
> Cc: Help Gnu Emacs mailing list <help-gnu-emacs@gnu.org>
>
> (setq face-new-frame-defaults
> (assq-delete-all 'c-debug-is-sws-face face-new-frame-defaults))
>
> which seems to work.
I don't think you can do that safely, because the face could be used
by some frames.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2019-07-21 2:30 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2019-07-20 13:19 How do I get rid of a face defined with defface? Alan Mackenzie
2019-07-20 13:58 ` Eli Zaretskii
2019-07-20 14:05 ` Stefan Monnier
2019-07-20 14:10 ` Eli Zaretskii
2019-07-20 21:56 ` Noam Postavsky
2019-07-21 2:30 ` Eli Zaretskii
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