Re: Issue 1477 in lilypond: suppress output for expected warnings

[lilypond]

Comment #5 on issue 1477 by percival.music.ca: suppress output for expected  
warnings
http://code.google.com/p/lilypond/issues/detail?id=1477

Colin: this is a longstanding complaint.  The good news is that I've  
finally gotten around to adding it as issue 1526.  The bad news is that  
everybody is petrified to touch the build system, so it'll most likely  
never get fixed.

Carl: a segfault will stop the test (or doc) build, so it'll be really  
obvious.  Besides that, we run diffs on the console output, so unless the  
message was buried in the 80%+ "false positive" text diffs, it could be  
found in the regtests comparison.  Eventually we want to enable  
#(warnings-as-errors #t) in the regtests to make this even more obvious.