Setting Score.voltaSpannerDuration to shorten a volta bracket causes warning

[Reinhold Kainhofer]

The attached minimal example (taken from an LSR snippet) cause the volta 
engraver to print a warning, although the file is perfectly fine and should 
work without a warning:

address@hidden:~/lilypond/lilypond$ LANGUAGE=C lilypond volta-bracket-
shortening.ly 
GNU LilyPond 2.15.12
Processing `volta-bracket-shortening.ly'
Parsing...
Interpreting music... 
warning: cannot end volta spanner
Preprocessing graphical objects...
Finding the ideal number of pages...
Fitting music on 1 page...
Drawing systems...
Layout output to `volta-bracket-shortening.ps'...
Converting to `./volta-bracket-shortening.pdf'...
Success: compilation successfully completed

The Volta_engraver::process_music checks for each ongoing repeat whether a 
bracket exists. if it doesn't it prints that warning, even though the bracket 
might have been ended earlier legally.

Cheers,
Reinhold
-- 
------------------------------------------------------------------
Reinhold Kainhofer, address@hidden, http://reinhold.kainhofer.com/
 * Financial & Actuarial Math., Vienna Univ. of Technology, Austria
 * http://www.fam.tuwien.ac.at/, DVR: 0005886
 * LilyPond, Music typesetting, http://www.lilypond.org

volta-bracket-shortening.ly
Description: Text Data