gtklp --version (return code: 0)
gtklp: invalid option -- '-'
Usage: gtklp [-P|-d printer] [-c configdir] [-S server] [-U user] [-p port] [-l] [-D] [-V] [-b] [-i] [-# n] [-C] [-H] [-E] [-J jobname] [-q priority] [-o option=value ...] [file(s)]
gtklp --help (return code: 0)
gtklp: invalid option -- '-'
Usage: gtklp [-P|-d printer] [-c configdir] [-S server] [-U user] [-p port] [-l] [-D] [-V] [-b] [-i] [-# n] [-C] [-H] [-E] [-J jobname] [-q priority] [-o option=value ...] [file(s)]