Shortening volta brackets

By default, the volta brackets will be drawn over all of the alternative music, but it is possible to shorten them by setting voltaSpannerDuration. In the next example, the bracket only lasts one measure, which is a duration of 3/4.

\version "2.24.0"

\relative c'' {
  \time 3/4
  c4 c c
  \set Score.voltaSpannerDuration = #(ly:make-moment 3/4)
  \repeat volta 5 {
    d4 d d
    \alternative {
      \volta 1,2,3,4 {
        e4 e e
        f4 f f }
      \volta 5 {
        g4 g g } } }
}