commit c0c7ee3a6536bbea2b9632a4cc9f6cac2a4bd9b6
author Fredrik Lundh <fredrik@pythonware.com> Sun Feb 18 21:04:48 2001 +0000
committer Fredrik Lundh <fredrik@pythonware.com> Sun Feb 18 21:04:48 2001 +0000
tree 1aedbd30e101240d849686fcc4106d686ae983f2
parent 8ac3627b91979a069d84fb9e8500eab0a99ce762

detect attempts to repeat anchors (fixes bug #130748)

Lib/sre_parse.py

diff --git a/Lib/sre_parse.py b/Lib/sre_parse.py
index 36036b6..3840365 100644
--- a/Lib/sre_parse.py
+++ b/Lib/sre_parse.py
@@ -446,6 +446,7 @@
                 min, max = 0, 1
             elif this == "*":
                 min, max = 0, MAXREPEAT
+
             elif this == "+":
                 min, max = 1, MAXREPEAT
             elif this == "{":
@@ -475,6 +476,8 @@
             if subpattern:
                 item = subpattern[-1:]
             else:
+                item = None
+            if not item or (len(item) == 1 and item[0][0] == AT):
                 raise error, "nothing to repeat"
             if item[0][0] in (MIN_REPEAT, MAX_REPEAT):
                 raise error, "multiple repeat"