diff --git a/lex.py b/lex.py
index 17d4cda..b97eb59 100755
--- a/lex.py
+++ b/lex.py
@@ -368,6 +368,12 @@ class Lexer(object):
         assert self.grammar.rules
     def get_line(self):
         return self.lines[self.y] + '\n'
+    def lex_all(self, lines):
+        lextokens = [[] for l in lines]
+        for t in lexer.lex(lines):
+            lextokens[t.y].append(t)
+        return lextokens
+        
     def lex(self, lines, y=0, x=0):
         self.action      = 'lex'
         self.y           = y