>> Looking up the e-mail archive for 'lilypond-devel' I couldn't find
>> relevant info. Do you have a link?
>
> Have a look at
> https://lilypond.org/doc/v2.21/Documentation/notation/spanners.fr.html
>
> Apparently some spacing calculations need to be triggeredby hand.
Well, that's exactly the point: I can't find any technical reasoning
for that. While it certainly is a special case for beams to adjust
the minimum length, other grobs like voice follower lines or
glissandos almost always need it.
Werner
