>> LilyPond provides `\temporary` and `\revert` to set a grob property
>> temporarily, and afterwards the value of the grob property is the
>> same as before.
>>
>> Is there a similar possiblity for `\set` (or something usable in
>> Scheme)? I guess not, but I couldn't find this documented
>> somewhere...
>
> No, this doesn't exist OOTB. It could be implemented with a Scheme
> engraver, but that would probably be overkill, unless for some
> reason it's really important for what you're trying to do?
I was wondering whether there exists a solution to issue #4651 – the
suggested code there doesn't work, unfortunately – removing the beam
stencil might lead to missing flags if auto-beaming is active.
Perhaps I could iterate over the music, emitting `\once \autoBeamOn`
for every element?
Werner
