--- /dev/null
+\version "2.19.28"
+
+\header {
+ texidoc ="The part combiner can combine parts of unequal lengths."
+}
+
+\layout { ragged-right = ##t }
+
+\new Staff { %% based on the example in Issue 913
+ c'1
+ \partcombine { e' r } { c' }
+ \partcombine { b' } {}
+ \partcombine {} { f' }
+}