fixes

zblz · zblz · commit fea45e4d76d5 · 2015-10-22T16:34:59.000+01:00
diff --git a/lib/matplotlib/mathtext.py b/lib/matplotlib/mathtext.py
@@ -2505,21 +2505,20 @@ def symbol(self, s, loc, toks):
             # Binary operators at start of string should not be spaced
             if (c in self._binary_operators and
                     (len(s[:loc].split()) == 0 or prev_char == '{' or
-                        prev_char == '(')):
+                        prev_char in self._left_delim)):
                 return [char]
             else:
-                return [Hlist( [self._make_space(0.2),
-                                char,
-                                self._make_space(0.2)] ,
+                return [Hlist([self._make_space(0.2),
+                               char,
+                               self._make_space(0.2)] ,
                                do_kern = True)]
         elif c in self._punctuation_symbols:
-            # Do not space points as decimal separators
-            digits = set(r'0 1 2 3 4 5 6 7 8 9'.split())
-            if (c == '.' and s[loc - 1] in digits and s[loc + 1] in digits):
+            # Do not space dots as decimal separators
+            if (c == '.' and s[loc - 1].isdigit() and s[loc + 1].isdigit()):
                 return [char]
             else:
-                return [Hlist( [char,
-                                self._make_space(0.2)] ,
+                return [Hlist([char,
+                               self._make_space(0.2)],
                                do_kern = True)]
         return [char]
 
