[Lilypond-auto] Issue 2677 in lilypond: Add function for overriding broken spanners to LilyPond

[lilypond]

Status: Started
Owner: ----
CC: address@hidden
Labels: Type-Patch Patch-new

New issue 2677 by address@hidden: Add function for overriding broken  
spanners to LilyPond
http://code.google.com/p/lilypond/issues/detail?id=2677

The music function \alterBroken is intended to facilitate overrides
applied independently to the pieces of broken spanners--one of the
perennial difficulties faced by users of LilyPond (addressed in
Extending 2.6: "Difficult Tweaks").  The function aims at generalization
by allowing the user to specify the name of the spanner and the property
to be overridden.

The function will override unbroken spanners, but it will ignore
non-spanners with a warning.

The function calls \override and may be prefaced by \once (or followed
by a \revert of the relevant property).

Rietveld issue:
http://codereview.appspot.com/6397054/