GNU bug report logs - #20984
25.0.50; Combining accents don't display properly in certain fonts

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From: Eli Zaretskii <eliz <at> gnu.org>
To: bruce.connor.am <at> gmail.com
Cc: 20984 <at> debbugs.gnu.org
Subject: bug#20984: 25.0.50; Combining accents don't display properly in certain fonts
Date: Sun, 05 Jul 2015 19:33:33 +0300

> Date: Sun, 5 Jul 2015 17:24:32 +0100
> From: Artur Malabarba <bruce.connor.am <at> gmail.com>
> 
> Start emacs -Q then evaluate the following in the *scratch* (assuming
> you have this font installed)
> 
> (set-face-attribute 'default nil :font "SourceCodePro Medium")
> (insert (format "a%c" 768))
> 
> The result should look like "à", but instead, it looks like "a`" where
> the letter "a" is actually distorted and shifted up (image attached).
> The same happens with other combining symbols.

Do both glyphs come from the same font, according to "C-u C-x ="?  (I
don't have that font installed to try that myself.)

Emacs can only compose characters if their glyphs are covered by the
same font.

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