--- /dev/null
+\version "2.14.2"
+
+#(ly:set-option 'warning-as-error #f)
+
+\header {
+ texidoc = "LilyPond does not support multiple concurrent phrasing slurs with the
+parentheses syntax. In this case, warnings will be given and the nested
+slur will not be generated. However, one can can create a second slur with
+a different spanner-id."
+}
+
+altPhSlur = #(make-music 'PhrasingSlurEvent 'span-direction START 'spanner-id "alt")
+altPhSlurEnd = #(make-music 'PhrasingSlurEvent 'span-direction STOP 'spanner-id "alt")
+
+\relative c'' {
+ % This will give warnings ("Already have phrasing slur" and "Cannot end phrasing slur")
+ c4\(\( d4\)\( e4\) f\) |
+ % This will give two overlapping slurs:
+ d\( d\altPhSlur e\) f\altPhSlurEnd |
+
+}