Add an extra comment

jklymak · web-flow · commit 347d156794b0 · 2019-09-12T17:05:39.000-07:00
diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
@@ -2410,6 +2410,7 @@ def handle_single_axis(scale, autoscaleon, shared_axes, interval,
 
             bb = mtransforms.BboxBase.union(dl)
             x0, x1 = getattr(bb, interval)
+            # If x0 and x1 are non finite, use the locator to figure out default limits.  
             locator = axis.get_major_locator()
             x0, x1 = locator.nonsingular(x0, x1)
 
