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Re: When and how to register various font backends
From: |
Eli Zaretskii |
Subject: |
Re: When and how to register various font backends |
Date: |
Fri, 14 Jun 2019 17:47:07 +0300 |
> From: Robert Pluim <address@hidden>
> Cc: address@hidden
> Date: Fri, 14 Jun 2019 15:16:51 +0200
>
> >>>>> On Fri, 14 Jun 2019 15:19:14 +0300, Eli Zaretskii <address@hidden> said:
>
> >> (xft xfthb x)
> >>
> >> Reordering that to put xfthb first is a matter of reordering the
> >> register_font_driver calls in Fx_create_frame
>
> Eli> That's true, but we don't want to have 3 font backends in the list,
> Eli> because then looking for a font that isn't available on the system
> Eli> will take much longer (Emacs tries to find the font with each backend
> Eli> in turn). We want to have only 2 backends by default.
>
> That I think pleads for your solution, where xfthb is preferred to xft
> unless xft is specifically requested.
Both solutions provide this, the difference is in how you request
specific backend, and at which point in frame's life cycle you
can/should request that.
> Eli> I'm not sure removing x (and gdi on Windows) is a good idea, even in
> Eli> Emacs 28. I understand (more accurately, was told very recently)
> that
> Eli> HarfBuzz was designed to be able to work with any font, not just OTF,
> Eli> but I'm not sure our integration of HarfBuzz allows that. We should
> Eli> actively test that with old fonts, like bitmapped fonts and BDF,
> Eli> before we make the decision. For example, I suspect the methods we
> Eli> currently use for finding fonts suitable for HarfBuzz filter out
> Eli> non-OTF fonts (at least on Windows, this is definitely so).
>
> OK. So itʼs just xft (and uniscribe) weʼd be removing, eventually.
We can only remove those if we require HarfBuzz and don't support
builds without HarfBuzz.
> (add-to-list 'default-frame-alist '(font-backend xft x)) works already, no?
> And
> presumably continues to work with your solution.
No, it doesn't work with my solution, at least not reliably, because I
didn't intend it to work.
- When and how to register various font backends, Eli Zaretskii, 2019/06/07
- Re: When and how to register various font backends, Robert Pluim, 2019/06/14
- Re: When and how to register various font backends, Eli Zaretskii, 2019/06/14
- Re: When and how to register various font backends, Robert Pluim, 2019/06/14
- Re: When and how to register various font backends,
Eli Zaretskii <=
- Re: When and how to register various font backends, Eli Zaretskii, 2019/06/15
- Re: When and how to register various font backends, Michael Welsh Duggan, 2019/06/16
- Re: When and how to register various font backends, Robert Pluim, 2019/06/17
- Re: When and how to register various font backends, Eli Zaretskii, 2019/06/17
- Re: When and how to register various font backends, YAMAMOTO Mitsuharu, 2019/06/17
- Re: When and how to register various font backends, Eli Zaretskii, 2019/06/18
- Re: When and how to register various font backends, YAMAMOTO Mitsuharu, 2019/06/18
- Re: When and how to register various font backends, Eli Zaretskii, 2019/06/19
- Re: When and how to register various font backends, Andy Moreton, 2019/06/14
Re: When and how to register various font backends, YAMAMOTO Mitsuharu, 2019/06/14