Fixed handling of ArrowStyle class input to set_arrowstyle function. Fixes #1812

cimarronm · cimarronm · commit 465b26d395ae · 2013-04-16T16:10:42.000-07:00
diff --git a/lib/matplotlib/patches.py b/lib/matplotlib/patches.py
@@ -3906,7 +3906,7 @@ def set_arrowstyle(self, arrowstyle=None, **kw):
         if arrowstyle is None:
             return ArrowStyle.pprint_styles()
 
-        if isinstance(arrowstyle, ConnectionStyle._Base):
+        if isinstance(arrowstyle, ArrowStyle._Base):
             self._arrow_transmuter = arrowstyle
         else:
             self._arrow_transmuter = ArrowStyle(arrowstyle, **kw)
