Provided by: libfontconfig1-dev_2.12.6-0ubuntu2_amd64 bug

NAME
       FcStrCmpIgnoreCase - compare UTF-8 strings ignoring case


SYNOPSIS
       #include <fontconfig/fontconfig.h>

       int FcStrCmpIgnoreCase (const FcChar8 *s1, const FcChar8 *s2);


DESCRIPTION
       Returns  the  usual <0, 0, >0 result of comparing s1 and s2. This test is case-insensitive for all proper
       UTF-8 encoded strings.

Fontconfig 2.12.6                                 05 April 2018                            FcStrCmpIgnoreCase(3)