Rename ls_mapperr to ls_mapper_r and add comment about the split of ls_mapper

lennart0901 · lennart0901 · commit 9e70828f8445 · 2014-11-09T14:57:22.000+01:00
diff --git a/lib/matplotlib/cbook.py b/lib/matplotlib/cbook.py
@@ -2108,7 +2108,10 @@ def unmasked_index_ranges(mask, compressed=True):
                (':', 'dotted')]
 
 ls_mapper = dict(_linestyles)
-ls_mapperr = dict([(ls[1], ls[0]) for ls in _linestyles])
+# The ls_mapper maps short codes for line style to their full name used
+# by backends
+# The reverse mapper is for mapping full names to short ones
+ls_mapper_r = dict([(ls[1], ls[0]) for ls in _linestyles])
 
 
 def align_iterators(func, *iterables):
diff --git a/lib/matplotlib/lines.py b/lib/matplotlib/lines.py
@@ -16,7 +16,7 @@
 from matplotlib import verbose
 from . import artist
 from .artist import Artist
-from .cbook import iterable, is_string_like, is_numlike, ls_mapperr
+from .cbook import iterable, is_string_like, is_numlike, ls_mapper_r
 from .colors import colorConverter
 from .path import Path
 from .transforms import Bbox, TransformedPath, IdentityTransform
@@ -972,8 +972,8 @@ def set_linestyle(self, linestyle):
                 break
 
         if linestyle not in self._lineStyles:
-            if linestyle in ls_mapperr:
-                linestyle = ls_mapperr[linestyle]
+            if linestyle in ls_mapper_r:
+                linestyle = ls_mapper_r[linestyle]
             else:
                 verbose.report('Unrecognized line style %s, %s' %
                                (linestyle, type(linestyle)))
