Updates:
Summary: Patch: Provide \hide and \omit functions for transparent and void
glyphs
Comment #10 on issue 2859 by [email protected]: Patch: Provide \hide and \omit
functions for transparent and void glyphs
http://code.google.com/p/lilypond/issues/detail?id=2859
To conclude the bikeshedding, an additional \un function has been provided
in issue 2874 and \no has been renamed to \omit again, since \un\omit is
less ugly than \un\no.
Since this is holding up issue 2870, I would propose (after Patchy passes,
of course) to change this back to Patch-countdown. It's not like it has
not seen extensive review.