Issue 2143 in lilypond: accidental arrangement should depend on tightness of music

[lilypond]

Status: Accepted
Owner: ----
CC: address@hidden
Labels: Type-Enhancement

New issue 2143 by address@hidden: accidental arrangement should  
depend on tightness of music
http://code.google.com/p/lilypond/issues/detail?id=2143

depending on space available, accidentals should be placed more or  
less "dense".

For example two flats in sixth (and two sharps in sixth, too) should be  
aligned in one vertical line when they appear in a rapid succession of  
32nds, while they shouldn't be aligned if there's plenty of whitespace  
before notes to which they apply.

Accidentals should be also placed tightly when they affect the first note  
after a barline (it is preferred to have first note in a measure as close  
to the barline as possible, within reason).

Attached "desired output.png" shows how the results might look like.   
Following are real engraving examples.

Related issues:
issue 2141
issue 2142
issue 2144
issue 2145

Attachments:
        desired output.png  32.1 KB
        example - flats and naturals 1.png  316 KB
        example - flats in sixth 3.png  29.6 KB
        example - natural and sharp in sixth 2.png  85.2 KB
        example - natural and sharp in sixth 3.png  27.0 KB
        example - naturals in sixth.png  131 KB
        example - sharp and natural in fifth.png  83.0 KB
        example - sharp and natural in seventh.png  132 KB
        example - sharp and natural in sixth 1.png  273 KB
        example - sharp and natural in sixth 2.png  37.9 KB
        example - sharps in sixth 1.png  287 KB
        example - sharps in sixth 2.png  328 KB