bug#52493: 29.0.50; Setting Inconsolata up in init.el makes default face rendered wrong

[Dmitry Gutov]

On 16.12.2021 10:29, Eli Zaretskii wrote:
> > Cc: 52493@debbugs.gnu.org
> > From: Dmitry Gutov <dgutov@yandex.ru>
> > Date: Thu, 16 Dec 2021 01:43:31 +0300
> >
> > > > (set-face-attribute 'default nil :height 110 :family "Inconsolata_dz")
> > > >
> > > > See the attached screenshot with comparison (master is on the left).
> > >
> > > Indeed, weird.  What does the below show?
> > >
> > >     M-: (face-font 'default) RET
> > >
> > > after you evaluate the above in "emacs -Q"?
> >
> > "-DAMA-Ubuntu Condensed-regular-normal-normal-*-29-*-*-*-*-0-iso10646-1"
> >
> > So... not the right family and it's "condensed", for some reason.
> >
> > For comparison,
> >
> > (set-face-attribute 'default nil :height 110 :family "Ubuntu")
> >
> > results in
> >
> > "-DAMA-Ubuntu-regular-normal-normal-*-29-*-*-*-*-0-iso10646-1"
> >
> > And by default (without any set-face-attribute calls),
> >
> > (face-font 'default) evaluates to
> >
> > "-DAMA-Ubuntu Mono-regular-normal-normal-*-35-*-*-*-m-0-iso10646-1"
> >
> > > And how does it differ
> > > from the same in a version of Emacs that predates the changes of the
> > > mode-line face?
> >
> > Current emacs-28 returns
> >
> > "-PfEd-Inconsolata_dz-normal-normal-normal-*-29-*-*-*-m-0-iso10646-1"
> >
> > Regarding "version of Emacs that predates", I wasn't sure which commit
> > to pick exactly, but 756b8a5f1bd28aeadc804 also returns that value, and
> > doesn't have the described problem.
> >
> > > Also, what happens if you invoke Emacs like this:
> > >
> > >     $ emacs -Q -fn Inconsolata_dz
> >
> > It doesn't look as narrow, and (face-font 'default) evaluates to
> >
> > "-PfEd-Inconsolata_dz-medium-normal-normal-*-32-*-*-*-m-0-iso10646-1"
>
> Thanks.  I think this means that Emacs 29 on master now rejects the
> Inconsolata_dz font for some reason, or thinks it finds a better
> match.

Despite 'emacs -Q -fn Inconsolata_dz' having the intended effect?

> The fact that it picks a condensed family is probably
> secondary; the main issue here is that the font family you requested
> is rejected.
>
> Does that family have the regular weight?  If not, maybe that's the
> reason it is rejected, and you need to also require some specific
> :weight value in your set-face-attribute call.

Although yes, something to that effect seems to be going on. But 
specifying different values of :weight doesn't help either (regulal, 
medium, light, bold, extra-bold).

Nor :width (condensed/semi-condensed/normal).

> Also, maybe running
>
>    $ FC_DEBUG=1282 emacs -Q
>
> will give us a clue of what happens.  See
>
>    https://www.freedesktop.org/software/fontconfig/fontconfig-user.html#DEBUG
>
> for where I took that weird value.

I've recorded the log, but it's 92 MB.

It's uploaded here: https://www.filemail.com/d/uplporttqgfaive

(The page probably requires JS, and if somehow it doesn't work on your 
system, try ftp://uplporttqgfaive:filemail@3012.filemail.com/)