cutgeneratingfunctionology/spam/real_set.py: Another update from Sage 9.5.beta9

Author: mkoeppe

cutgeneratingfunctionology/spam/real_set.py

@@ -415,11 +415,15 @@ def _latex_(self):
         """
         from sage.misc.latex import latex
         if self.is_point():
-            return r'\{' + latex(self.lower()) + r'\}'
+            # Converting to str avoids the extra whitespace
+            # that LatexExpr add on concenation. We do not need
+            # the whitespace because we are wrapping it in
+            # non-letter characters.
+            return r'\{' + str(latex(self.lower())) + r'\}'
         s =  '[' if self._lower_closed else '('
-        s += latex(self.lower())
+        s += str(latex(self.lower()))
         s += ', '
-        s += latex(self.upper())
+        s += str(latex(self.upper()))
         s +=  ']' if self._upper_closed else ')'
         return s
 
@@ -1380,9 +1384,9 @@ def _latex_(self):
 
             sage: from cutgeneratingfunctionology.spam.real_set import RealSet
             sage: latex(RealSet(0, 1))
-            ( 0 , 1 )
+            (0, 1)
             sage: latex((RealSet(0, 1).union(RealSet.unbounded_above_closed(2))))
-            ( 0 , 1 ) \cup [ 2 , +\infty )
+            (0, 1) \cup [2, +\infty)
         """
         from sage.misc.latex import latex
         if self.n_components() == 0: