tests for semicircle arrow shape

diff --git a/graphs/directed/arrows.gv b/graphs/directed/arrows.gv
index e84b04a3350276433c6a68d827dd665dc786575e..a05f566c49e7ea75d53db24faaf583e760146dd6 100644 (file)
--- a/graphs/directed/arrows.gv
+++ b/graphs/directed/arrows.gv
@@ -74,4 +74,10 @@ digraph G {
        lvee -> lveelvee [arrowhead=lveelvee label=lveelvee]
        _vee -> rvee [arrowhead=rvee label=rvee]
        rvee -> rveervee [arrowhead=rveervee label=rveervee]
+       _curve -> curve [arrowhead=curve label=curve]
+       curve -> curvecurve [arrowhead=curvecurve label=curvecurve]
+       _curve -> lcurve [arrowhead=lcurve label=lcurve]
+       lcurve -> lcurvelcurve [arrowhead=lcurvelcurve label=lcurvelcurve]
+       _curve -> rcurve [arrowhead=rcurve label=rcurve]
+       rcurve -> rcurvercurve [arrowhead=rcurvercurve label=rcurvercurve]
 }