fc-scan --version (return code: 0)
fontconfig version 2.11.94
fc-scan --help (return code: 0)
usage: fc-scan [-Vbh] [-f FORMAT] [--ignore-blanks] [--format FORMAT] [--version] [--help] font-file...
Scan font files and directories, and print resulting pattern(s)
-b, --ignore-blanks ignore blanks to compute languages
-f, --format=FORMAT use the given output format
-V, --version display font config version and exit
-h, --help display this help and exit