Re: [Lilypond-auto] Issue 4390 in lilypond: MusicXML: tremolo on an eighth note creates a 32nd tremolo mark instead

[lilypond]

Comment #1 on issue 4390 by address@hidden: MusicXML: tremolo on an  
eighth note creates a 32nd tremolo mark instead
https://code.google.com/p/lilypond/issues/detail?id=4390

Hi Jörn,

On 03.05.2015, at 00:23, Jörn Eichler <address@hidden> wrote:

> > I'm not top posting.

> For music XML input "<tremolo type="single">2</tremolo>" on an eighth note
> of C, musicxml2ly creates "c8 :16" which, I think, is incorrect, because  
> the
> 2 tremolo marks make it a 32th tremolo.

thanks for the report!

Yes, you are right, it’s a bug and all beamed notes are affected e.g.:

   MusicXML                              expected LP     wrong LP
  --------------------------------------------------------------------------
   eighth note with 1 stroke         c8:16               c8:8
   eighth note with 2 strokes       c8:32               c8:16
   ...
   sixteenth note with 1 stroke    c16:32             c16:8
   sixteenth note with 2 strokes  c16:64             c16:16
   ...


I cooked up some files to illustrate the expected output and the bug:

*  
https://github.com/Philomelos/PUMTS/blob/master/partwise/elements/tremolo/tremolo.xml  
(MusicXML supports up to 8 tremolo marks)
*  
https://github.com/Philomelos/PUMTS/blob/master/partwise/elements/tremolo/tremolo--expected.ly
*  
https://github.com/Philomelos/PUMTS/blob/master/partwise/elements/tremolo/tremolo--expected.svg
*  
https://github.com/Philomelos/PUMTS/blob/master/partwise/elements/tremolo/tremolo_xml--musicxml2ly-2.19.15.ly  
(I had to comment out some lines)
*  
https://github.com/Philomelos/PUMTS/blob/master/partwise/elements/tremolo/tremolo_xml--musicxml2ly-2.19.15.ly--lilypond-2.19.15.svg


hth
patrick


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