Add _internal.classic_mode rcParam

mdboom · mdboom · commit 838b541514a0 · 2015-11-30T14:21:43.000-05:00
diff --git a/lib/matplotlib/mpl-data/stylelib/classic.mplstyle b/lib/matplotlib/mpl-data/stylelib/classic.mplstyle
@@ -495,3 +495,5 @@ animation.convert_path: convert   # Path to ImageMagick's convert binary.
                                   # is also the name of a system tool.
 animation.convert_args:
 animation.html: none
+
+_internal.classic_mode: True
diff --git a/lib/matplotlib/rcsetup.py b/lib/matplotlib/rcsetup.py
@@ -1191,7 +1191,14 @@ def validate_cycler(s):
     'animation.convert_path':  ['convert', six.text_type],
      # Additional arguments for mencoder movie writer (using pipes)
 
-    'animation.convert_args':  [[], validate_stringlist]}
+    'animation.convert_args':  [[], validate_stringlist],
+
+    # Classic (pre 2.0) compatibility mode
+    # This is used for things that are hard to make backward compatible
+    # with a sane rcParam alone.  This does *not* turn on classic mode
+    # altogether.  For that use `matplotlib.style.use('classic')`.
+    '_internal.classic_mode': [False, validate_bool]
+}
 
 
 if __name__ == '__main__':
