Re: Issue 2402 in lilypond: Extra bar-lines appear when cadenzas are mixed with time signatures

[lilypond]

Comment #5 on issue 2402 by address@hidden: Extra bar-lines appear when  
cadenzas are mixed with time signatures
http://code.google.com/p/lilypond/issues/detail?id=2402

Problem found - if a \cadenzaOn starts at the same point in time where a  
\cadenzaOff stops, it may or may not kick in (as the two commands both act  
on Timing.timing and Timing.autoBeaming).

As a workaround I've put \grace { s32 } after the cadenzaOffs in my score  
and it works like a charm.

Didn't we have the same problem with MIDI volume (offs and ons falling at  
the same time)?  It'd be nice perhaps to have a generic way to handle  
`offs' so that they were always registered before `ons' (i.e. some sorta  
macro define-on-command and define-off-command).