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bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appea
From: |
Kenichi Handa |
Subject: |
bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear |
Date: |
Tue, 11 Sep 2012 23:49:40 +0900 |
In article <wlbohflu0z.wl%mituharu@math.s.chiba-u.ac.jp>, YAMAMOTO Mitsuharu
<mituharu@math.s.chiba-u.ac.jp> writes:
> As you explained, the grapheme clusters are in logical order, and
> glyphs in each grapheme cluster are in drawing order. So simply
> merging grapheme clusters as in the code in Ffont_shape_gstring does
> not seem to be correct in the case of right-to-left text (what's drawn
> later comes earlier in a merged grapheme cluster).
Sure.
> IMO, dividing glyphs into grapheme clusters is font backed driver's
> task, and I don't understand why Ffont_shape_gstring merges the
> grapheme clusters for some cases. Could you explain?
When I designed it, I consider such a situation that
grapheme clusters returned by a font-driver is so fine for
Emacs' display engine that Ffont_shape_gstring must combine
some of them into one grapheme cluster. But, I agree that
it's much cleaner to make a font-driver to consider such a
thing.
I'll try to fix Ffont_shape_gstring, and check whether or
not it breaks rendersing of some scripts.
---
Kenichi Handa
handa@gnu.org
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear, (continued)
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear, Steffan, 2012/09/03
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear, Steffan, 2012/09/03
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear, Steffan, 2012/09/06
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear, Steffan, 2012/09/06
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear, YAMAMOTO Mitsuharu, 2012/09/09
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear,
Kenichi Handa <=
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear, Eli Zaretskii, 2012/09/11
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear, Kenichi Handa, 2012/09/12
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear, Eli Zaretskii, 2012/09/12
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear, Kenichi Handa, 2012/09/13
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear, Eli Zaretskii, 2012/09/13
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear, Kenichi Handa, 2012/09/13
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear, Kenichi Handa, 2012/09/16
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear, Eli Zaretskii, 2012/09/16
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear, Stefan Monnier, 2012/09/16
- bug#11860: 24.1; Arabic - Harakat (diacritics, short vowels) don't appear, Eli Zaretskii, 2012/09/16