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bug#50177: Support U+20DD COMBINING ENCLOSING CIRCLE
From: |
Werner LEMBERG |
Subject: |
bug#50177: Support U+20DD COMBINING ENCLOSING CIRCLE |
Date: |
Sat, 28 Aug 2021 06:40:02 +0000 (UTC) |
>> CC'ing Handa-san, in the hope that he could explain better why we
>> disallow character composition from different fonts.
>
> The main reason is what Eli wrote. An opentype font contains rules
> to tell how to compose two glyphs in that font. But such rules are
> specific to that font, and there's no way to combine rules of
> different fonts. So, an opentype rendering engine does not work for
> different fonts.
>
> And, when we artificially compose characters from different fonts,
> there is a possibility that the resulting image looks like a
> different character which I think is worse than not composing.
+1
Werner