Add an extra comment

jklymak · anntzer · commit cf2ef39a4cc3 · 2019-09-13T12:10:24.000+02:00
diff --git a/lib/matplotlib/axes/_base.py b/lib/matplotlib/axes/_base.py
@@ -2410,6 +2410,8 @@ 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)
 
