Bug#278246: About double-width cyrillic characters
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This problem is caused by invalid font configuration.
Qt's QFont object are always unicode at API level. If underlying "platform"
font doesn't have all unicode glyphs, single QFont object uses several
platform fonts. Sometimes Qt can't find those several fonts with same
typeface, so different typeface is used for some glyphs. Fonts without
cyrillic glyphs are a common case (e.g. popular "vera" fonts don't have
cyrillic glyphs), so other fonts are used at QFont level, causing
interesting visual effects.
So the "fix" for this bug is - install proper fonts and/or reconfigure your
KDE to use them.
If we want to avoid this problem on unexperienced user's systems, we should
never use fonts that don't provide all glyphs in any default configuration
of any package. Probably some "standard family names" should be defined
(e.g. "mono", "sans" and "serif"), which will be aliased to something that
works properly with system default locale on installation time.
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