int FcStrCmpIgnoreCase (const FcChar8 *s1, const FcChar8 *s2);
Returns the usual <0, 0, >0 result of comparing s1 and s2. This test is case-insensitive in the ASCII range and will operate properly with UTF8 encoded strings, although it does not check for well formed strings.
Fontconfig version 2.3.2
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