From: Eli Zaretskii <eliz@gnu.org>
To: Dmitry Gutov <dgutov@yandex.ru>
Cc: 37774@debbugs.gnu.org, juri@linkov.net
Subject: bug#37774: 27.0.50; new :extend attribute broke visuals of all themes and other packages
Date: Sat, 07 Dec 2019 19:53:04 +0200 [thread overview]
Message-ID: <83r21gdnun.fsf@gnu.org> (raw)
In-Reply-To: <ffd97a3f-71a8-60c5-187c-70c5f7ff3462@yandex.ru> (message from Dmitry Gutov on Sat, 7 Dec 2019 19:06:08 +0200)
> Cc: 37774@debbugs.gnu.org, juri@linkov.net
> From: Dmitry Gutov <dgutov@yandex.ru>
> Date: Sat, 7 Dec 2019 19:06:08 +0200
>
> > I meant to avoid such consequences by making sure those other callers
> > can never trigger this new processing of :extend.
>
> Eli, what you're asking for would be actively harmful.
>
> To make an analogy, when we're changing a core Emacs behavior, we
> shouldn't try to make it work only on Tuesdays. Even if the original bug
> reporter observed the problem on a Tuesday.
Sorry, I don't see the analogy.
We are not trying to change the core behavior, we are trying to change
how themes define faces, in a way that makes the :extend attribute be
implicitly inherited from the default spec of the face to the face
after theme's customizations. All I want is to make sure no other
caller of face-spec-recalc, one that has nothing to do with themes
defining faces, picks up the change, because that would be unintended.
If you consider this incorrect or unjustified, please explain why.
> Can we please focus on the more pressing question: whether the proposed
> patch actually works, and does that reliably, or are there
> scenarios/configurations where it would do something unexpected.
We were considering only one scenario: that of a theme defining its
own face specs. face-spec-recalc is called in other scenarios, but I
don't think we should consider them, because we don't want to change
the behavior in any of those other scenarios.
> > . the theme doesn't specify :extend
> > . the default spec for a face specifies ':extend nil'
> >
> > In this case, after applying the theme, the face should have
> > ':extend nil', implicitly "inherited" from the default spec. Do you
> > agree?
>
> Ok, I think I understand the distinction: it's for when a character has
> several faces specified for it.
Yes, it's important when merging with those other faces that are in
effect for displaying a character.
> + (when (and theme-face-applied
> + (eq 'unspecified (face-attribute face :extend frame t)))
> + (let ((tail (plist-member default-attrs :extend)))
> + (and tail (face-spec-set-2 face frame
> + (list :extend (cadr tail))))))
This is OK, but why say
(list :extend (cadr tail))
instead of just
tail
? Unless I'm missing something here, the value of 'tail' here should
be (:extend VAL), where VAL is either t or nil. Right?
next prev parent reply other threads:[~2019-12-07 17:53 UTC|newest]
Thread overview: 170+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-16 7:00 bug#37774: 27.0.50; new :extend attribute broke visuals of all themes and other packages Andrey Orst
2019-10-16 7:53 ` Eli Zaretskii
2019-10-16 8:12 ` Andrey Orst
2019-10-16 11:05 ` Eli Zaretskii
2019-10-16 14:20 ` Stefan Kangas
2019-10-16 16:25 ` Eli Zaretskii
2019-10-16 8:59 ` Michael Heerdegen
2019-10-16 9:17 ` martin rudalics
2019-10-16 11:26 ` Eli Zaretskii
2019-10-16 11:38 ` Michael Heerdegen
2019-10-16 12:59 ` Eli Zaretskii
2019-10-16 11:10 ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2019-10-16 11:17 ` Andrey Orst
2019-10-16 11:41 ` Eli Zaretskii
2019-10-16 12:08 ` Andrey Orst
2019-10-16 13:05 ` Eli Zaretskii
2019-10-16 11:42 ` Eli Zaretskii
2019-10-16 13:18 ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2019-10-16 13:33 ` Andrey Orst
2019-10-16 14:21 ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2019-10-16 17:33 ` Eli Zaretskii
2019-10-16 18:13 ` Andrey Orst
2019-10-16 18:50 ` Eli Zaretskii
2019-10-17 19:05 ` Kévin Le Gouguec
2019-10-17 20:38 ` Kévin Le Gouguec
2019-10-17 11:36 ` Michael Albinus
2019-10-17 12:38 ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2019-10-17 13:05 ` Eli Zaretskii
2019-10-17 16:18 ` Michael Albinus
2019-10-17 16:39 ` Eli Zaretskii
2019-10-16 17:27 ` Juri Linkov
2019-10-16 18:07 ` Andrey Orst
2019-10-16 18:18 ` Juri Linkov
2019-10-16 18:54 ` Eli Zaretskii
2019-10-16 19:52 ` Juri Linkov
2019-10-16 20:06 ` Eli Zaretskii
2019-10-16 19:55 ` Eli Zaretskii
2019-10-16 20:14 ` Juri Linkov
2019-10-17 6:18 ` Eli Zaretskii
2019-10-17 8:52 ` Andrey Orst
2019-10-17 8:59 ` Eli Zaretskii
2019-10-17 9:20 ` Andrey Orst
2019-10-17 12:54 ` Eli Zaretskii
2019-10-17 13:40 ` Andrey Orst
2019-10-17 14:02 ` Eli Zaretskii
2019-10-17 14:13 ` Andrey Orst
2019-10-17 14:38 ` Eli Zaretskii
2019-10-17 14:02 ` Dmitry Gutov
2019-10-17 16:20 ` Eli Zaretskii
2019-10-17 16:46 ` Dmitry Gutov
2019-10-17 17:20 ` Eli Zaretskii
2019-10-17 8:25 ` martin rudalics
2019-10-17 14:08 ` Dmitry Gutov
2019-10-17 16:29 ` Eli Zaretskii
2019-10-17 16:50 ` Dmitry Gutov
2019-10-17 17:23 ` Eli Zaretskii
2019-10-18 14:25 ` Dmitry Gutov
2019-10-20 20:07 ` Dmitry Gutov
2019-10-21 6:10 ` Eli Zaretskii
2019-10-23 12:47 ` Dmitry Gutov
2019-10-23 15:39 ` Eli Zaretskii
2019-10-23 16:12 ` Dmitry Gutov
2019-10-23 18:04 ` Eli Zaretskii
2019-10-23 20:28 ` Dmitry Gutov
2019-10-24 14:56 ` Eli Zaretskii
2019-10-24 17:04 ` Kévin Le Gouguec
2019-10-17 22:22 ` Juri Linkov
2019-10-18 5:28 ` Andrey Orst
2019-10-18 6:53 ` Eli Zaretskii
2019-10-19 20:53 ` Juri Linkov
2019-10-20 6:03 ` Eli Zaretskii
2019-10-20 15:42 ` Juri Linkov
2019-10-20 16:59 ` Eli Zaretskii
2019-10-21 21:29 ` Juri Linkov
2019-10-18 8:25 ` martin rudalics
2019-10-18 12:41 ` Dmitry Gutov
2019-10-18 13:04 ` Andrey Orst
2019-10-17 13:56 ` Dmitry Gutov
2019-10-17 16:28 ` Eli Zaretskii
2019-10-17 13:54 ` Dmitry Gutov
2019-10-16 18:46 ` Eli Zaretskii
2019-10-16 19:46 ` Juri Linkov
2019-10-16 20:03 ` Eli Zaretskii
2019-10-16 20:23 ` Juri Linkov
2019-10-16 20:37 ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2019-10-17 6:43 ` Eli Zaretskii
2019-10-17 6:40 ` Eli Zaretskii
2019-10-16 20:29 ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2019-10-17 14:12 ` Dmitry Gutov
2019-10-16 20:23 ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2019-10-16 11:33 ` Andrey Orst
2019-10-16 15:30 ` Eli Zaretskii
2019-10-31 16:06 ` Jonas Bernoulli
2019-10-31 16:48 ` Eli Zaretskii
2019-11-06 16:26 ` Jonas Bernoulli
2019-11-06 17:06 ` martin rudalics
2019-11-07 13:58 ` Eli Zaretskii
2019-11-07 15:41 ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2019-11-07 17:10 ` martin rudalics
2019-11-07 21:57 ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2019-11-08 9:20 ` martin rudalics
2019-11-08 10:37 ` Eli Zaretskii
2019-11-08 18:26 ` martin rudalics
2019-11-08 19:14 ` Eli Zaretskii
2019-11-08 11:39 ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2019-11-08 18:27 ` martin rudalics
2019-12-05 16:48 ` Kévin Le Gouguec
2019-12-05 18:02 ` Eli Zaretskii
2019-12-05 19:05 ` Kévin Le Gouguec
2019-12-05 19:19 ` Eli Zaretskii
2019-12-05 18:22 ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2019-12-05 18:47 ` Eli Zaretskii
2019-11-07 13:59 ` Eli Zaretskii
2019-11-11 10:52 ` Jonas Bernoulli
2019-11-11 19:03 ` Jonas Bernoulli
2019-11-14 11:33 ` Eli Zaretskii
2019-11-14 14:14 ` Dmitry Gutov
2019-11-14 14:41 ` Eli Zaretskii
2019-11-14 22:42 ` Dmitry Gutov
2019-11-15 8:08 ` Eli Zaretskii
2019-11-15 23:50 ` Dmitry Gutov
2019-11-16 8:09 ` Eli Zaretskii
2019-11-16 8:17 ` Dmitry Gutov
2019-11-23 23:20 ` Juri Linkov
2019-11-24 16:14 ` Eli Zaretskii
2019-11-25 23:45 ` Juanma Barranquero
2019-11-26 17:44 ` Eli Zaretskii
2019-11-25 0:29 ` Dmitry Gutov
2019-11-25 16:00 ` Eli Zaretskii
2019-11-25 23:50 ` Dmitry Gutov
2019-11-26 17:43 ` Eli Zaretskii
2019-12-02 0:05 ` Dmitry Gutov
2019-12-02 16:21 ` Eli Zaretskii
2019-12-03 0:01 ` Dmitry Gutov
2019-12-03 16:21 ` Eli Zaretskii
2019-12-05 1:44 ` Dmitry Gutov
2019-12-05 15:47 ` Eli Zaretskii
2019-12-06 15:44 ` Dmitry Gutov
2019-12-06 16:18 ` Eli Zaretskii
2019-12-06 16:58 ` Dmitry Gutov
2019-12-06 17:31 ` Eli Zaretskii
2019-12-07 1:06 ` Dmitry Gutov
2019-12-07 7:53 ` Eli Zaretskii
2019-12-07 17:06 ` Dmitry Gutov
2019-12-07 17:53 ` Eli Zaretskii [this message]
2019-12-07 18:55 ` Dmitry Gutov
2019-12-07 19:14 ` Eli Zaretskii
2019-12-08 0:42 ` Dmitry Gutov
2019-12-08 3:32 ` Eli Zaretskii
2019-12-08 10:39 ` Dmitry Gutov
2019-12-08 15:50 ` Eli Zaretskii
2019-12-08 21:20 ` Dmitry Gutov
2019-12-09 12:59 ` Eli Zaretskii
2019-12-09 14:07 ` Dmitry Gutov
2019-12-09 14:42 ` Eli Zaretskii
2019-12-09 15:24 ` Dmitry Gutov
2019-12-09 15:42 ` Eli Zaretskii
2019-12-10 0:20 ` Dmitry Gutov
2019-12-10 15:57 ` Eli Zaretskii
2019-12-11 23:02 ` Juri Linkov
2019-12-12 4:36 ` Eli Zaretskii
2019-12-12 23:44 ` Juri Linkov
2019-12-13 7:03 ` Eli Zaretskii
2019-11-27 21:30 ` Juri Linkov
2019-11-27 23:34 ` Dmitry Gutov
2019-11-28 15:19 ` Eli Zaretskii
2019-11-28 15:16 ` Eli Zaretskii
2019-11-30 11:35 ` Eli Zaretskii
2019-12-02 0:07 ` Dmitry Gutov
2019-10-31 17:29 ` Dmitry Gutov
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