matplotlib
diff --git a/‎lib/matplotlib/colorbar.py
+4-1 b/‎lib/matplotlib/colorbar.py
+4-1
diff --git a/‎lib/matplotlib/tests/baseline_images/test_contour/contour_addlines.png
-164 Bytes b/‎lib/matplotlib/tests/baseline_images/test_contour/contour_addlines.png
-164 Bytes
@@ -783,7 +783,8 @@ def _add_solids_patches(self, X, Y, C, mappable):
 
     def _do_extends(self, extendlen):
         """
-        Make adjustments for the extend triangles (or rectanges)
+        Make adjustments of the inner axes for the extend triangles (or
+        rectanges) and add them as patches.
         """
         # extend lengths are fraction of the *inner* part of colorbar,
         # not the total colorbar:
@@ -891,6 +892,8 @@ def add_lines(self, levels, colors, linewidths, erase=True):
             self.lines = []
         self.lines.append(col)
         col.set_color(colors)
+        # set clipping to False, which should work well with default
+        # limits. 
         col.set_clip_on(False)
         self.ax.add_collection(col)
         self.stale = True