Comment #7 on issue 2789 by [email protected]: Patch: Doc: clarify the use of a Scheme engraver.
http://code.google.com/p/lilypond/issues/detail?id=2789
This has apparently pushed as commit 5fed61cb3b4f254cac376555734bcf748573ea66 Author: Francisco Vila <[email protected]> Date: Wed Aug 29 15:42:09 2012 +0200 Doc: clarify the use of a Scheme engraver.
