rely on re to escape trailing separator

afvincent · afvincent · commit 033111fd1f04 · 2017-08-24T16:11:34.000-07:00
diff --git a/lib/matplotlib/ticker.py b/lib/matplotlib/ticker.py
@@ -174,6 +174,7 @@
 import six
 
 import itertools
+import re
 import locale
 import math
 import numpy as np
@@ -1240,8 +1241,7 @@ def __init__(self, unit="", places=None, sep=" "):
     def __call__(self, x, pos=None):
         s = "%s%s" % (self.format_eng(x), self.unit)
         # Remove the trailing separator when there is neither prefix nor unit
-        if len(self.sep) > 0 and s.endswith(self.sep):
-            s = s[:-len(self.sep)]
+        s = re.sub(re.escape(self.sep) + "$", "", s)
         return self.fix_minus(s)
 
     def format_eng(self, num):
