TrillSpan help

[Mark Probert]

Hi.

According to the manual "A hairpin ending on a downbeat will stop at 
the preceding barline." By default, I've found this to be true of 
\startTrillSpan \stopTrillSpan as well.

With hairpins there is an override (Hairpin.to-barline) that allows for 
the final note to be included. Does there exist such a feature for 
trills?

In the example note how the trill and the hairpin don't match. I am 
clearly missing something...

Any help appreciated, and many thanks!

 .. mark.

---
\version "2.24"

tune = \relative c'' {
  \clef treble
  \time 4/4
  \override Hairpin.to-barline = ##f

  g1\startTrillSpan_\< | g1 | g1\stopTrillSpan\! |
}
\score {
  <<
    \new Staff \tune
  >>
}