Issue 452 in lilypond: shortInstrumentName change gets confused when changing directly at a linebreak

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Issue 452: shortInstrumentName change gets confused when changing directly at a 
linebreak
http://code.google.com/p/lilypond/issues/detail?id=452

New issue report by trevorbaca:
Hi,

In the snippet below, the shortInstrumentName change gets confused. Rather
than renaming to "" the shortInstrumentName prints as the long(er)
instrumentName instead.

Notes:

1. The empty string "" is not required to produce the problem; normal
strings like "New instrument name" induce the same behavior;

2. This confusion lasts for only a single system, after which the
shortInstrumentName changes as requested;

3. The name change seems to have to happen *directly at a linebreak* for
this bug to occur.



%%% BEGIN %%%

\version "2.11.31"

\new Staff {
   \set Staff.instrumentName = "Violino"
   \set Staff.shortInstrumentName = "Vn."
   c'1
   \break
   c'1
   \break
   \set Staff.shortInstrumentName = ""
   c'1
}

%%% END %%%


Low priority, IMO.

Attachments:
        insrument-name-confusion.png  7.7 KB 


Issue attributes:
        Status: New
        Owner: ----
        Labels: Type-Defect Priority-Medium

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