check-regexp --version (return code: 0)
check-regexp (GNU Source-highlight) 3.1.8
check-regexp --help (return code: 0)
check-regexp (GNU Source-highlight) 3.1.8
Tries to match the regular expression passed as the first argument
against the strings passed as remaining arguments
Usage: check-regexp 'regular expression' 'string1' 'string2' ...
-h, --help Print help and exit
-V, --version Print version and exit