Issue 1352 in lilypond: Polyphonic dots placement is inconsistent, confusing and prone to collisions

[lilypond]

Status: Accepted
Owner: ----
Labels: Type-Collision Priority-Medium

New issue 1352 by v.villenave: Polyphonic dots placement is inconsistent,  
confusing and prone to collisions
http://code.google.com/p/lilypond/issues/detail?id=1352

% Reported by Nick Payne on -user.

Dots may be placed differently, as demonstrated below:

\version "2.13.36"

\relative c' {
<< % This octave produces the nicest result.
 { e8. f16} \\
 { bes,,4 } \\
 { <g' d'>}

<< % One octave higher: the dot looks like it belongs to another note.
 { e''8. f16} \\
 { bes,,4 } \\
 { <g' d'> }

<< % Here's what it would look like if it did belong to the other note.
 { e'8*3/2 f16 } \\
 { bes,,4 } \\
 { <g' d'>4.*2/3 }

<< % Removing the chord to avoid Issue 1266; then an ugly collision occurs.
 { e'8. f16} \\
 { bes,,4 } \\
 { d' }

}

See also issue 51 and issue 339 (both are closed, so it's not a regression).
The << \\ >> construct is used here for clarity, but using \new Voice  
\voiceTwo etc. also reproduces the problem.

Attachments:
        ex.png  2.2 KB