From 06d30763b31ee67ef2786206c858b477d828bde9 Mon Sep 17 00:00:00 2001
From: Nicolas Dumazet <nicdumz.commits@gmail.com>
Date: Fri, 18 Feb 2011 12:23:15 +0900
Subject: [PATCH] mercurial hook: skip duplicates

If a push contains several commits affecting many times the same
file, we only need to check once for the changed file.
---
 flake8/run.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/flake8/run.py b/flake8/run.py
index 222a800..983396e 100644
--- a/flake8/run.py
+++ b/flake8/run.py
@@ -55,8 +55,12 @@ def main():
 
 
 def _get_files(repo, **kwargs):
+    seen = set()
     for rev in xrange(repo[kwargs['node']], len(repo)):
         for file_ in repo[rev].files():
+            if file_ in seen:
+                continue
+            seen.add(file_)
             if not file_.endswith('.py'):
                 continue
             if skip_file(file_):