fix lazy-pattern-rule bug

--HG-- branch : pmacs2
2009-07-27 14:41:27 -04:00 · 2009-07-27 14:41:27 -04:00 · 1310911e1f
parent 7c113ed27d
commit 1310911e1f
1 changed files with 4 additions and 1 deletions
--- a/lex.py
+++ b/lex.py
@ -207,7 +207,10 @@ class LazyPatternRule(Rule):
        self.pattern = pattern
        self.d       = {}
    def _compile(self, d):
-        self.re = re.compile(self.pattern % d, self.reflags)
+        try:
+            self.re = re.compile(self.pattern % d, self.reflags)
+        except:
+            self.re = re.compile(self.pattern)
        self.d  = d
    def match(self, lexer, parent):
        if self.d != parent.matchd: