change custom notehead for different stem direction

[Orm Finnendahl]

Hi,

 for flute pizzicato in contemporary music, it is quite common to use
a ">" as a notehead. With a stem down, the ">" should be changed to a
"<" as visible in the attached png.

I know how to change the notehead by overriding the NoteHead stencil
with an eps file, but can't find any information about automatically
changing the glyph depending on stem direction. Is that possible in
lilypond and does anybody have advice?

It's cumbersome to do this by hand each time stem direction is
changed.

--
Orm

pizz.png
Description: PNG image