--- /dev/null
+\version "2.19.23"
+
+\header {
+ texidoc = "@code{\\autochange} needs to be given pitches in their
+final octaves, so if @code{\\relative} is used it must be applied
+inside @code{\\autochange}. The pitches in @code{\\autochange} are
+unaffected by an outer @code{\\relative}, so that the printed output
+shows the pitches that @code{\\autochange} used.
+
+The expected output of this test is three identical measures."
+}
+
+\new PianoStaff {
+ \autochange \absolute {g4 c g' c}
+ \relative \autochange {g4 c g' c} % relative is ignored
+ \autochange \relative {g4 c, g'' c,,}
+}
--- /dev/null
+\version "2.19.23"
+
+\header {
+ texidoc = "@code{\\partcombine} needs to be given pitches in their
+final octaves, so if @code{\\relative} is used it must be applied
+inside @code{\\partcombine}. The pitches in @code{\\partcombine} are
+unaffected by an outer @code{\\relative}, so that the printed output
+shows the pitches that @code{\\partcombine} used.
+
+The expected output of this test is three identical measures."
+}
+
+\new Staff {
+ \partcombine \absolute { e'2 f' } { c'2 d' }
+ \relative \partcombine { e'2 f' } { c'2 d' } % relative is ignored
+ \partcombine \relative { e'2 f } \relative { c'2 d }
+}