"Phil Holmes" <m...@philholmes.net> writes: > ----- Original Message ----- > From: "James Harkins" <jamshar...@gmail.com> > To: "lily-users" <lilypond-user@gnu.org> > Sent: Wednesday, June 20, 2012 9:36 AM > Subject: Re: "-dshow-available-fonts" vs. UNIX stdout? > > >> On 6/20/12, Ramana Kumar <ramana.ku...@gmail.com> wrote: >>> probably lilypond isn't writing to stdout. maybe stderr? >> >> OK, let me refine the question. If it isn't using stdout, is there a >> good reason why is it using something else? Or is it just a bug? >> >> hjh > > > As a general rule, Unix orientated programs direct the main output of > the program to stdout, and other informative messages to stderr. The > main output of lilypond is the pdf, which actually goes to a file. > The informative messages (e.g. a list of fonts) continue to adopt the > principle of going to stderr.
It would be arguable that an explicitly requested list of fonts is not an "informative message". For the record: if you call a typical GNU utility with bad options, it outputs correct usage information to stderr. If, in contrast, you call it with --help, it outputs correct usage information to stdout. In the first case, we are talking about diagnostics, in the second case, we are talking about requested output. -- David Kastrup _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
