Re: funny "doublings" in PostScript output [UPDATED]

[Kieren Richard MacMillan]

Hello, Jan and Mats:

> Actually, you could try any example.
>
> lilypond-bin input/regression/accidental-double.ly
> sort accidental-double.tex > sortedlines
> sort -u accidental-double.tex > uniquesortedlines
> diff sortedlines uniquesortedlines
> 29d28
> < \def\lilypondpaperunit{mm}%
> 49d47
> < \lyitem{ -4.0000 }{ 12.5729 }{\magfontSDEXBomMMBo\char47 }%
> 54d51
> < \lyitem{ -6.0000 }{ 14.9229 }{\magfontSDEXBomMMBo\char150 }%
> 61d57
> < \lyitem{ -7.0000 }{  8.5729 }{\magfontSDEXBomMMBo\char144 }%
> 63,64d58
> < \lyitem{ -7.5000 }{ 21.8437 }{\magfontSDEXBomMMBo\char47 }%
> < \lyitem{ -7.5000 }{ 23.1437 }{\magfontSDEXBomMMBo\char62 }%
> 71d64
> < }%
>
> As you see, the clef, the time signature and the key signature are 
> typeset twice
> (the two last duplications belong to the duplicated note of this 
> particular example file).
> I have no idea why it happens.

If I'm not mistaken (based on fairly quick recent observations) only 
time signatures at the beginning or end of a staff/line are doubled: 
any mid-staff time signature change(s) appears to be typeset only once.

Any thoughts on how/when this can be fixed? (...including me learning 
Scheme or Python and getting my fingers dirty?)

Thanks,
Kieren.