Re: [Libguestfs] [PATCH libguestfs 2/5] guestfish: write --help to stdout, use gnulib's progname module

On Mon, Aug 24, 2009 at 01:21:39PM +0200, Jim Meyering wrote: > Also, it is good policy, IMHO, to make it so a program works the same > way no matter where the actual binary happens to be located in a file > system hierarchy. Well, if you can think of a better way to do it ... I can't. > >> + enum { HELP_OPTION = CHAR_MAX + 1 }; > >> + > >> static const char *options = "a:Df:h::im:nrv?Vx"; > >> static const struct option long_options[] = { > >> { "add", 1, 0, 'a' }, > >> { "cmd-help", 2, 0, 'h' }, > >> { "file", 1, 0, 'f' }, > >> - { "help", 0, 0, '?' }, > >> + { "help", 0, 0, HELP_OPTION }, > > > > I'm unclear on why we do this - what's wrong with using '?'? > > So that we can distinguish getop-diagnosed failure > (where it returns '?') from --help. Right, I see.