> I think the best format for usage is something like what Plan 9 > utilities use (BSD use the same): > > usage: cmd [-abcde] [-f file] [-g pattern] [file ...]
Options without values are combined? Is that correct? > With these rules flo usage should be > > usage: flo [-c id] [-f from] [-r id] [-t to] [-w what] [what[,from][-to]] What if the values are of the same type? -c and -r have id as value. -f and -t have date as value. I think your usage-text looks prettier, but out of curiosity, can they be combined like this? usage: flo [-cr id] [-ft date] … If I decide to ditch getopt(), then I’d like to be able to type “flo -c -f” to clear the from-field, which means that -f and -t have optional arguments. Is it valid for an option to have an optional argument? If it is, which of the following is correct? 1. usage flo: [-f [from]] [-t [to]] 2. usage flo: [-ft] [-f from] [-t to] 3. usage flo: [-f from] [-t to] 4. usage flo: [-ft] I found some guidelines here: http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap12.html#tag_12_01c Do you agree with the guidelines listed in 12.2? I’ll find a pen and a paper and try to digest those.
