\version "2.15.5"
#(ly:set-option 'warning-as-error #f)
+#(ly:expect-warning (_ "already have slur"))
\header {
texidoc = "An additional opening slur during a running slur should be ignored
a2( b4 c)
% ^ extra SlurEvent
}
-%% END
\ No newline at end of file
+%% END