[Fontconfig] Query for unknown font with spacing=mono returns sans-serif font

[Akira TAGOH]

On Wed, Nov 10, 2021 at 2:14 PM Christian Weiske <cweiske at cweiske.de> wrote:
>
> Hello Akira,
>
>
>
> > Speaking of your example, the problem there is RFont3 isn't a known
> > font for your system and fontconfig doesn't also know what it is and
> > what the generic family they are.  if RFont3 is the monospaced font,
> > the proper fix here would be to have a config file like:
> >
> > <alias>
> >   <family>RFont3</family>
> >   <default><family>monospace</family></default>
> > </alias>
> >
> > Or do they have different spacing with one family name?
>
> RFont3 is a monospaced font in one PDF file, but non-monospaced (sans
> serif) in the next PDF file. So a hard mapping like you showed here is
> not possible.
>
> But poppler also sends the hint to fontconfig that it wants a
> monospaced font ("$ fc-match RFont3:spacing=mono").
> Shouldn't fontconfig use that hint and return a monospaced font?

In theory, yes. We may need similar things for :spacing=charcell and
:spacing=dual too.

>
> --
> Regards/Mit freundlichen Grüßen
> Christian Weiske
>
> -=≡ Geeking around in the name of science since 1982 ≡=-



-- 
Akira TAGOH