Fix handling of duplicated files in git ls-files output

Author: erezyaffe

gitsearchreplace/__init__.py

@@ -10,6 +10,7 @@
 import os
 import bisect
 import fnmatch
+from sets import Set
 
 def run_subprocess(cmd):
     pipe = subprocess.Popen(cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
@@ -110,8 +111,9 @@ def sub(self, expr, content, stage):
 
     def search_replace_in_files(self):
         filenames = run_subprocess(["git", "ls-files"]).splitlines()
+        unique_filenames = list(Set(filenames))
         filtered_filenames = []
-        for filename in filenames:
+        for filename in unique_filenames:
             excluded = False
             for exclude in self.exclude:
                 if fnmatch.fnmatch(filename, exclude):