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bug#46853: Confusing terminology "face height" instead of "font size"
From: |
Eli Zaretskii |
Subject: |
bug#46853: Confusing terminology "face height" instead of "font size" |
Date: |
Thu, 04 Mar 2021 15:46:08 +0200 |
> 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
- bug#46853: Confusing terminology "face height" instead of "font size", (continued)
- bug#46853: Confusing terminology "face height" instead of "font size", Eli Zaretskii, 2021/03/01
- bug#46853: Confusing terminology "face height" instead of "font size", Lars Ingebrigtsen, 2021/03/01
- bug#46853: Confusing terminology "face height" instead of "font size", Eli Zaretskii, 2021/03/01
- bug#46853: Confusing terminology "face height" instead of "font size", Stefan Kangas, 2021/03/03
- bug#46853: Confusing terminology "face height" instead of "font size", Eli Zaretskii, 2021/03/04
- bug#46853: Confusing terminology "face height" instead of "font size", Stefan Kangas, 2021/03/04
- bug#46853: Confusing terminology "face height" instead of "font size", Eli Zaretskii, 2021/03/01
- bug#46853: Confusing terminology "face height" instead of "font size", Lars Ingebrigtsen, 2021/03/01
- bug#46853: Confusing terminology "face height" instead of "font size", Eli Zaretskii, 2021/03/01
- bug#46853: Confusing terminology "face height" instead of "font size", Stefan Kangas, 2021/03/03
- bug#46853: Confusing terminology "face height" instead of "font size",
Eli Zaretskii <=
- bug#46853: Confusing terminology "face height" instead of "font size", Stefan Kangas, 2021/03/04
- bug#46853: Confusing terminology "face height" instead of "font size", Eli Zaretskii, 2021/03/01