#1742: don't raise exception on os.path.relpath("a", "a"), but return os.curdir.
Reported by Jesse Towner.
diff --git a/Misc/NEWS b/Misc/NEWS
index cf54566..4732113 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -342,6 +342,9 @@
 Library
 -------
 
+- Bug #1742: return os.curdir from os.path.relpath() if both arguments are
+  equal instead of raising an exception.
+
 - Patch #1637: fix urlparse for URLs like 'http://x.com?arg=/foo'.
 
 - Patch #1698: allow '@' in username parsed by urlparse.py.