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bug#39554: 27.0.50; cairo not composing sequences
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From: |
James Cloos |
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Subject: |
bug#39554: 27.0.50; cairo not composing sequences |
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Date: |
Fri, 11 Feb 2022 15:40:19 -0500 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) |
>>>>> "RP" == Robert Pluim <rpluim@gmail.com> writes:
>>>>> "LI" == Lars Ingebrigtsen <larsi@gnus.org> writes:
RP>> I donʼt see the issue with DejaVu Sans Mono in an Xft build, and can
RP>> reproduce it in an Xft+Harfbuzz build, so Cairo is not to blame here.
LI> in that case Emacs doesn't combine chars. So it's a
LI> matter of choosing a font that has wider coverage, I think.
no.
in this case one font is used.
w/ m17lib+libotf the two glyphs are combined and displayed one atop the other
(ie, z-axis stacking).
w/ harfbuzz the two glyphs still are combined but displayed next to each other.
(ie, x-axis stacking).
the first way is the correct way. the latter is a bug.
-JimC
--
James Cloos <cloos@jhcloos.com> OpenPGP: 0x997A9F17ED7DAEA6