+\version "2.19.4"
+
+\header {
+ texidoc = "Tuplet numbers are placed next to kneed beams when
+@code{Beam.positions} is overridden."
+}
+
+\layout {
+ indent = 0
+ ragged-right = ##t
+}
+
+top = \change Staff = "1"
+bottom = \change Staff = "2"
+
+music = \relative c {
+ \override Beam.auto-knee-gap = 1
+ \tuplet 3/2 4 {
+ c8 \top e'' \bottom g,,
+ \once \override Beam.positions = #'(4.5 . 4.5)
+ c,8 \top e'' \bottom g,,
+ \once \override Beam.positions = #'(-7.0 . -7.0)
+ \top e''8 \bottom c,, c,
+ \once \override Beam.positions = #'(-4.5 . -4.5)
+ \top e'''8 \bottom c,, c,
+ }
+}
+
+\score {
+ \new PianoStaff <<
+ \new Staff = "1" {
+ s1
+ }
+ \new Staff = "2" {
+ \clef bass
+ \music
+ }
+ >>
+}