Editing Force clef change in alternatives

This snippet shows how to force the appearance of a callback clef during a repeat.

<lilypond version="2.24">
%% => http://lilypond-french-users.1298960.n2.nabble.com/Changement-de-cle-avant-reprise-td7590078.html

\relative c' {
  \repeat volta 2 {
     c4 d e f g1 \clef bass g,4 a b c
  } 
  \alternative {
    { d1 \clef treble }
    { 
      \grace s4
      \once \override Staff.Clef.extra-spacing-width = #'(-1.5 . 0)
      \clef bass
      d4 c b a 
    }
  } 
  g1
}
</lilypond>

[[Category:Repeats]]
[[Category:Staff notation]]
[[Category:Editorial annotations]]
[[Category:Workaround]]
[[Category:Snippet]]