fc-pattern --version (return code: 0)
fontconfig version 2.11.94
fc-pattern --help (return code: 0)
usage: fc-pattern [-cdVh] [-f FORMAT] [--config] [--default] [--verbose] [--format=FORMAT] [--version] [--help] [pattern] {element...}
List best font matching [pattern]
-c, --config perform config substitution on pattern
-d, -default perform default substitution on pattern
-f, --format=FORMAT use the given output format
-V, --version display font config version and exit
-h, --help display this help and exit