From 889b0aa4506d5ea43985865a44562ebd39b3bf00 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tarek=20Ziad=C3=A9?= <ziade.tarek@gmail.com>
Date: Sun, 5 Apr 2009 21:49:36 +0000
Subject: Merged revisions 71280 via svnmerge from
 svn+ssh://pythondev@svn.python.org/python/trunk

........
  r71280 | tarek.ziade | 2009-04-05 23:44:08 +0200 (Sun, 05 Apr 2009) | 1 line

  Fixed #1491431: distutils.filelist.glob_to_re was broken for some edge cases (detailed in the test
........
---
 Lib/distutils/filelist.py            |  3 ++-
 Lib/distutils/tests/test_filelist.py | 23 +++++++++++++++++++++++
 Misc/NEWS                            |  3 +++
 3 files changed, 28 insertions(+), 1 deletion(-)
 create mode 100644 Lib/distutils/tests/test_filelist.py

diff --git a/Lib/distutils/filelist.py b/Lib/distutils/filelist.py
index a80c71e..58a2bfb 100644
--- a/Lib/distutils/filelist.py
+++ b/Lib/distutils/filelist.py
@@ -289,7 +289,8 @@ def glob_to_re(pattern):
     # character except the special characters.
     # XXX currently the "special characters" are just slash -- i.e. this is
     # Unix-only.
-    pattern_re = re.sub(r'(^|[^\\])\.', r'\1[^/]', pattern_re)
+    pattern_re = re.sub(r'((?<!\\)(\\\\)*)\.', r'\1[^/]', pattern_re)
+
     return pattern_re
 
 
diff --git a/Lib/distutils/tests/test_filelist.py b/Lib/distutils/tests/test_filelist.py
new file mode 100644
index 0000000..86db557
--- /dev/null
+++ b/Lib/distutils/tests/test_filelist.py
@@ -0,0 +1,23 @@
+"""Tests for distutils.filelist."""
+import unittest
+from distutils.filelist import glob_to_re
+
+class FileListTestCase(unittest.TestCase):
+
+    def test_glob_to_re(self):
+        # simple cases
+        self.assertEquals(glob_to_re('foo*'), 'foo[^/]*$')
+        self.assertEquals(glob_to_re('foo?'), 'foo[^/]$')
+        self.assertEquals(glob_to_re('foo??'), 'foo[^/][^/]$')
+
+        # special cases
+        self.assertEquals(glob_to_re(r'foo\\*'), r'foo\\\\[^/]*$')
+        self.assertEquals(glob_to_re(r'foo\\\*'), r'foo\\\\\\[^/]*$')
+        self.assertEquals(glob_to_re('foo????'), r'foo[^/][^/][^/][^/]$')
+        self.assertEquals(glob_to_re(r'foo\\??'), r'foo\\\\[^/][^/]$')
+
+def test_suite():
+    return unittest.makeSuite(FileListTestCase)
+
+if __name__ == "__main__":
+    unittest.main(defaultTest="test_suite")
diff --git a/Misc/NEWS b/Misc/NEWS
index cac482b1..815081b 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -327,6 +327,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases.
+  Initial fix by Wayne Davison.
+
 - Issue #5694: removed spurious test output in Distutils (test_clean).
 
 - Issue #1326077: fix the formatting of SyntaxErrors by the traceback module.
-- 
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