Re: Quarter notes with bars like \breve

[Simon Albrecht]

On 28.02.2016 18:31, Gregor Giesen wrote:
> Hi,
>
> how can I write a quarter note (without stem) embraced by two bars
> exactly like a note of the length \breve?

It’s not easy, since the bars belong to the note head glyph used by 
breve notes. Probably you need to combine three tools:
– [\once] \hide Stem
– Overriding the NoteHead stencil using a markup expression: 
<http://www.lilypond.org/doc/v2.18/Documentation/notation/modifying-stencils>
– and the \path markup command 
<http://www.lilypond.org/doc/v2.18/Documentation/notation/graphic#index-_005cpath-1> 
for drawing the actual note head. I don’t have much experience with 
this, others on the list might help.

Best, Simon