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bug#29630: 25.3; Unable to change fontset using :family face attribute
From: |
handa |
Subject: |
bug#29630: 25.3; Unable to change fontset using :family face attribute |
Date: |
Wed, 27 Dec 2017 21:33:04 +0900 |
In article <87zi68elz1.fsf@ziiuu.com>, Thomas Morgan <tlm@ziiuu.com> writes:
> `:font'
> [...] If you specify a string, the contents of the string should
> be a font name (*note (emacs)Fonts::); if the font name is an XLFD
> containing wildcards, Emacs chooses the first font matching those
> wildcards. [...]
> Would it make sense to add the following after the quoted sentence?
> You may also specify a fontset name as a string. For reasons of
> backward compatibility, in the case of the `default' face this may
> automatically generate a new fontset based on the family, weight,
> size, and other font-related properties of the specified fontset.
The generation of a new fontset happens every time you change a font of
the default face; not only when you specify a fontset for :font.
So, here, as an explanation of :font, I think what we have to say is that
specifying a fontset name is the same as specifying a font that the
fontset defines for ASCII. For instance,
Even if yoy create a fontset as this name:
(create-fontset-from-fontset-spec
"-*-dejavu sans mono-normal-normal-normal-*-*-*-*-*-m-0-fontset-dejavu")
when you do:
(set-fontset-font "fontset-dejavu" 'unicode-bmp (font-spec :family
"Freemono"))
giving "fontset-dejavu" to :font is the same as giving
(font-spec :family "Freemono").
> It would probably also be helpful to document the :fontset attribute
> in the manual, if that's the proper way to specify a fontset for the
> the frame's default face.
I don't remember how :fontset attribute works here, sorry. :-(
I tried:
(set-face-attribute 'default nil :fontset "fontset-dejavu")
but it seems that it has no effect?!?
On the other hand,
(modify-frame-parameters nil '((font . "fontset-dejavu")))
works.
> > At least, calling set-fontset-font for the fontset of the current frame
> > should work... and worked as far as I rememnber... but I've just found
> > that this does not work with the latest Emacs?!?
> >
> > (set-fontset-font nil 'unicode-bmp "dejavu sans mono")
> > (set-fontset-font nil 'unicode-bmp "Freemono" nil 'append)
> >
> > I'm now checking what is wrong.
That was my misunderstanding, sorry. I have two versions of freemono
fonts, ttf and otf, and Emacs (or fontconfig) found otf version, but I
was expecting ttf version that has more glyphs.
---
K. Handa
handa@gnu.org