Re: must I build?

[Valentin Villenave]

2008/11/25 John Mangual <address@hidden>:
> Mainly I want to get in involved by fixing some of the presentation bugs
> that arise such as this one
> http://code.google.com/p/lilypond/issues/detail?id=675&start=100

Nice idea; good luck with that! :-)

> where would i look to find the relevant source code to modify?  do i have to
> rebuild Lilypond everytime I want to try out a "fix"?

If you change something in /usr/local/share/lilypond/2.1*/scm, you can
test it immediately (Scheme code is interpreted, not compiled).

If you change something in a C++ file, you'll have to rebuild indeed:

sudo make uninstall & make bin-clean & make all & sudo make install

For this particular bug, the partcombine definition is in
ly/music-functions.ly, that calls a make-part-combine-music function,
that is defined in scm/part-combiner.scm, that uses some functions
from lily/part-combine-engraver.cc

You may also found informations in the docs:
http://lilypond.org/doc/v2.11/Documentation/user/lilypond-internals/PartCombineMusic

(this is probably not the easiest bug to start with, but good luck to you :-)

Cheers,
Valentin