Corrected typo from previous commit.

line.py

@@ -170,7 +170,7 @@ def generate_line(root):
             r = e[1][0]
             left_simple = is_id(left) or is_int(left)
 
-            if (r in ('(', ']') and left_simple) or (l == ')' and r != '-') \
+            if (r in ('(', '[') and left_simple) or (l == ')' and r != '-') \
                     or (left_simple and r.isalpha()):
                 sep = ''