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bug#20140: 24.4; M17n shaper output rejected
From: |
Eli Zaretskii |
Subject: |
bug#20140: 24.4; M17n shaper output rejected |
Date: |
Wed, 16 Feb 2022 21:20:02 +0200 |
> Date: Wed, 16 Feb 2022 19:01:12 +0000
> From: Richard Wordingham <richard.wordingham@ntlworld.com>
> Cc: larsi@gnus.org, 20140@debbugs.gnu.org
>
> > It sounds like Courier New in Windows 10 was "improved" by removing
> > the capability of ligating those 2 characters. On Windows XP, their
> > standard Courier New shows the first 2 characters ligate into a single
> > glyph, which looks just like U+FCCA, but on Windows 10 they don't
> > ligate. I don't know why is that; perhaps Arabic typesetting experts
> > decided these should not ligate?
> >
> > > I must admit I'm having trouble laying my hand on a font which
> > > does these ligatures.
> >
> > Try the Arabic Typesetting font, there I see on Windows 10 that the
> > first 2 characters look like U+FCCA.
> >
> > IOW, this is a font issue, not an Emacs or HarfBuzz issue.
>
> Arabic Typesetting seems not to come in an evaluation copy of Windows
> 10.
You can easily install it from the Internet. I did.
> And yes, the issue is that some fonts probably don't work well with
> Emacs.
??? These issues with fonts have nothing to do with Emacs. HarfBuzz
will produce the same results outside of Emacs; e.g., try hb-view. Or
view your message with those characters in a Web browser (by pointing
it to the bug-gnu-emacs archives) -- you will see the same results.
AFAIU, the fonts simply don't want to produce a ligature from those
two characters. Arabic Typesetting does, so the result is what you
expect, in Emacs and elsewhere.
- bug#20140: 24.4; M17n shaper output rejected, (continued)
- bug#20140: 24.4; M17n shaper output rejected, Eli Zaretskii, 2022/02/16
- bug#20140: 24.4; M17n shaper output rejected, Eli Zaretskii, 2022/02/16
- bug#20140: 24.4; M17n shaper output rejected, Eli Zaretskii, 2022/02/13
- bug#20140: 24.4; M17n shaper output rejected, Richard Wordingham, 2022/02/13
- bug#20140: 24.4; M17n shaper output rejected, Eli Zaretskii, 2022/02/14
- bug#20140: 24.4; M17n shaper output rejected, Richard Wordingham, 2022/02/14
- bug#20140: 24.4; M17n shaper output rejected, Eli Zaretskii, 2022/02/15
- bug#20140: 24.4; M17n shaper output rejected, Richard Wordingham, 2022/02/15
- bug#20140: 24.4; M17n shaper output rejected, Eli Zaretskii, 2022/02/16
- bug#20140: 24.4; M17n shaper output rejected, Richard Wordingham, 2022/02/16
- bug#20140: 24.4; M17n shaper output rejected,
Eli Zaretskii <=