Comment #3 on issue 2436 by [email protected]: Patch: Directs displaying-grob-ancestry.ly to stderr
http://code.google.com/p/lilypond/issues/detail?id=2436
As a general rule, both stdout and stderr are displayed on the terminal. As I understand it, unix programs generally sent program output to stdout and other "progress" or "warning" information to stderr. The image processing programs like pngtopnm are examples of this. So - if lily followed this paradigm, it would actually send its output (pdg, midi, etc) to stdout, and the other informative messages to stderr. Thus, anything not connected with the desired program output _should_ be sent to stderr. Capturing this is no more difficult than stdout. So - for the benefit of make doc (and following GOP9), I'm trying to ensure that all progress messages go to stderr, not stdout. A by-product of this is that they are captured in logfiles during make test and can also be checked as part of the regression testing processs.
For oi polloi, both appear on the termianl anyway, so there is no change. _______________________________________________ bug-lilypond mailing list [email protected] https://lists.gnu.org/mailman/listinfo/bug-lilypond
