From: Eli Zaretskii <eliz@gnu.org>
To: Stefan Kangas <stefan@marxist.se>
Cc: 46853@debbugs.gnu.org, larsi@gnus.org
Subject: bug#46853: Confusing terminology "face height" instead of "font size"
Date: Thu, 04 Mar 2021 15:46:08 +0200 [thread overview]
Message-ID: <837dmnjalb.fsf@gnu.org> (raw)
In-Reply-To: <CADwFkmmoVW2xqLrWEPncHYb4jxbkd9NxYVHfOmb4PYP3i9ShWA@mail.gmail.com> (message from Stefan Kangas on Wed, 3 Mar 2021 18:16:02 -0600)
> From: Stefan Kangas <stefan@marxist.se>
> Date: Wed, 3 Mar 2021 18:16:02 -0600
> Cc: 46853@debbugs.gnu.org
>
> >> and then `C-x C-+' in the buffer enlarges all the faces, even
> >> variable-pitch...
> >
> > It only enlarges those faces which inherit their size from 'default'.
>
> I find the semantics here confusing. I do this in emacs -Q:
>
> (progn
> (defface foo-bar '((t :weight bold)) "foo")
> (pop-to-buffer (get-buffer-create "foo"))
> (insert "aaa " (propertize "bbb" 'face 'foo-bar) " ccc")
> (text-scale-adjust 3))
>
> And I see that "bbb" has its font size increased together with "aaa" and
> "ccc". But `M-x describe-face RET foo-bar' says that "Inherit:
> unspecified".
All the faces implicitly inherit from 'default'.
> Looking at the manual, the node `(elisp) Basic Faces' says:
>
> ‘default’
> The default face, whose attributes are all specified. All other
> faces implicitly inherit from it: any unspecified attribute
> defaults to the attribute on this face (*note Face Attributes::).
Exactly.
> So when you say that "it only enlarges those faces which inherit their
> size from 'default'", doesn't that just mean that *any* face is resized,
> unless that face itself or any its parents specify an absolute :height
> (an integer)?
No, it doesn't have to be an absolute :height attribute. It can also
be:
. a face that inherits from a face other than 'default', which has
an absolute :height attribute
. a face that specifies a relative :height attribute and inherits
from a face other than 'default that specifies an absolute :height
. any other situation where a face recursively inherits from some
other face with a non-default absolute :height
next prev parent reply other threads:[~2021-03-04 13:46 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-01 16:40 bug#46853: Confusing terminology "face height" instead of "font size" Stefan Kangas
2021-03-01 17:06 ` Eli Zaretskii
2021-03-01 19:31 ` Stefan Kangas
2021-03-01 19:46 ` Eli Zaretskii
2021-03-01 17:12 ` Lars Ingebrigtsen
2021-03-01 17:17 ` Eli Zaretskii
2021-03-01 19:15 ` Stefan Kangas
2021-03-01 19:25 ` Lars Ingebrigtsen
2021-03-01 19:33 ` Lars Ingebrigtsen
2021-03-01 19:37 ` Lars Ingebrigtsen
2021-03-01 19:50 ` Eli Zaretskii
2021-03-01 19:48 ` Eli Zaretskii
2021-03-01 20:05 ` Lars Ingebrigtsen
2021-03-01 20:17 ` Eli Zaretskii
2021-03-03 22:43 ` Stefan Kangas
2021-03-04 13:41 ` Eli Zaretskii
2021-03-04 18:05 ` Stefan Kangas
2022-06-19 23:27 ` Lars Ingebrigtsen
2021-03-01 19:35 ` Eli Zaretskii
2021-03-01 19:45 ` Lars Ingebrigtsen
2021-03-01 19:59 ` Eli Zaretskii
2021-03-04 0:16 ` Stefan Kangas
2021-03-04 13:46 ` Eli Zaretskii [this message]
2021-03-04 17:35 ` Stefan Kangas
2021-03-01 19:33 ` Eli Zaretskii
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