Longer repeat ties

Here is how to create longer repeat ties:

\version "2.24.0"

extendRT =
#(define-music-function (further) (number?)
#{
  \once \override RepeatTie.X-extent = #'(0 . 0)
  \once \override RepeatTie.details.note-head-gap = #(- 0.2 (/ further 2))
  \once \override RepeatTie.extra-offset = #(cons (/ further -2) 0)
#})

\relative c' {
  \extendRT #2.5
  e8 \repeatTie r16 r8
}