[Lilypond-auto] Issue 4543 in lilypond: articulate.ly: update documentation, add support for portato

[lilypond]

Status: New
Owner: ----

New issue 4543 by address@hidden: articulate.ly: update  
documentation, add support for portato
https://code.google.com/p/lilypond/issues/detail?id=4543

<https://codereview.appspot.com/260040043/>

This is a small enhancement which I've had lying around for a while...  
Since the "portato" articulation is nowadays supported when generating MIDI  
without using articulate.ly, there's really no reason why this articulation  
couldn't be supported by articulate.ly as well.

This changeset updates the articulate.ly script documentation on the  
supported articulations with a description of ac:staccatissimoFactor, and  
adds ac:portatoFactor for shortening notes marked portato, and slurred  
notes marked with staccato. The default value for ac:portatoFactor is 3/4  
(to match the shortening factor for portato notes when not using  
articulate.ly).


I'll try my luck at suggesting this enhancement in a form which  
automatically renders also slurred notes marked staccato using  
the "portato" articulation (see <https://en.wikipedia.org/wiki/Portato>) –  
it's easy to remove this feature if there's controversy about how such  
notes "should" be rendered, or whether the note at which the slur ends  
should still be rendered using the "portato" articulation or not (as  
articulate.ly gives slurred notes without any explicit articulations their  
full length *except* for the note at which the slur ends, which again gets  
shortened by ac:normalFactor).


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