Re: Issue 1110 in lilypond: Wrong octave of repetition chord with \relative and #{ #} syntax

[lilypond]

Comment #13 on issue 1110 by address@hidden: Wrong octave of repetition chord  
with \relative and #{ #} syntax
http://code.google.com/p/lilypond/issues/detail?id=1110

Regarding comment #11: see comment #12.  If you want a reliable indicator  
for mismatching chord associations when relativizing, one possibibility  
would be to let q give the source chord a unique chordId, and give the same  
chordId to repeated chords.  A mismatch when relativizing in the manner  
given in comment #12 would then be flagged as an error.

One possibility for unique chordId is just using (make-symbol "chordId").   
This creates an eq?-unique uninterned symbol on each call, and the  
uniqueness survives any kind of deep copying.

Personally, I prefer them over the symbol table garbage that gensym leaves  
around, but some people might be annoyed about Id values that all _look_  
the same while comparing as different.