[Lilypond-auto] Issue 2884 in lilypond: Spanners should extend into \alternative blocks automatically

[lilypond]

Status: Accepted
Owner: ----
Labels: Type-Enhancement

New issue 2884 by address@hidden: Spanners should extend into  
\alternative blocks automatically
http://code.google.com/p/lilypond/issues/detail?id=2884

Ties, slurs, glissandi and other spanners extending into \alternative
blocks only work correctly for the first alternative.

David Kastrup suggested:

"It might make sense if the repeat constructs siphoned off unfinished
spanners at the start of the first alternative and replicated them as
post-break spanners into every other alternative."

For background, see Issue 2591.