Issue 1918 in lilypond: possible bad output in mensural-ligatures.ly

[lilypond]

Status: Accepted
Owner: ----
Labels: Needs-evidence Type-Other

New issue 1918 by brownian.box: possible bad output in mensural-ligatures.ly
http://code.google.com/p/lilypond/issues/detail?id=1918

Reported by Janek Warchoł,
http://lists.gnu.org/archive/html/bug-lilypond/2011-09/msg00599.html

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Hi,

i've noticed something strange in mensural-ligatures.ly: in the last  
system, a flat symbol collides with the notes (attached).  Should it look  
like this?
I tried to determine when it was introduced, but i cannot open eps files in  
Lilydev so all regtest archives from  
http://lilypond.org/download/binaries/test-output/ are useless for me...

cheers,
Janek
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As I've figured out of that thread, there is an invalid ligature; so,  
mensural-ligatures.ly should be modified?