Re: Pointing Aiken Fa up in partCombine

[Jean Abou Samra]

> Le 18 août 2022 à 18:09, Werner LEMBERG <wl@gnu.org> a écrit :
> 
> 
>> 
>> \partCombine #'(1 . 1)
>>  { \aikenHeads f'2 } 
>>  { \aikenHeads f'2 }
> 
> This is an interesting problem.  LilyPond's Emmentaler font contains
> two shapes of this glyph, namely `noteheads.d1fa` and
> `noteheads.u1fa`, where the 'd' and 'u' stands for 'down' and 'up',
> respectively (you can see the glyphs in Appendix A.8 of the Notation
> Reference).  It seems that the part combine engine uses the 'down'
> version of the glyph if two voices fall together; AFAIK, this is an
> arbitrary choice without a possibility to adjust.
> 


Looks like it’s not the part combiner, but the core note column merging logic. 
See note-collision.cc.


> I have no idea how the part combiner works, but it shouldn't be too
> hard to add a property to select which shape should be used in this
> case.
> If my analysis is correct, I suggest to open an issue in our tracker.
> 
> 
>    Werner