# HG changeset patch
# User Brendan Cully <brendan@kublai.com>
# Date 1159392773 25200
# Node ID 87b7ae306d54d811230972481a24aaa70aa78f5b
# Parent  0e6b58c7beeaed6c4227fcfe7d45e31f288c2efd
mq: bail out if a patch appears more than once in the series file.

Closes: #379.

diff --git a/hgext/mq.py b/hgext/mq.py
--- a/hgext/mq.py
+++ b/hgext/mq.py
@@ -114,6 +114,9 @@ class queue:
                 comment = l[h:]
             patch = patch.strip()
             if patch:
+                if patch in self.series:
+                    raise util.Abort(_('%s appears more than once in %s') %
+                                     (patch, self.join(self.series_path)))
                 self.series.append(patch)
                 self.series_guards.append(self.guard_re.findall(comment))