diff: use tab to separate date from filename

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

diff: use tab to separate date from filename

manifest hash: 73812de990e0e787320c11f7bd83c4ca91a52c4c
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.0 (GNU/Linux)

iD8DBQFCpdDxywK+sNU5EO8RAhKwAKCFcUa/p6ALbjoOl4I8VKJknZtu7gCdFvoE
HQn1iq4gnJoeurB7YLMRpqc=
=ltYP
-----END PGP SIGNATURE-----

mercurial/mdiff.py

@@ -26,7 +26,10 b' def unidiff(a, ad, b, bd, fn):'
     else:
         a = a.splitlines(1)
         b = b.splitlines(1)
-        l = list(difflib.unified_diff(a, b, "a/" + fn, "b/" + fn, ad, bd))
+        l = list(difflib.unified_diff(a, b, "a/" + fn, "b/" + fn))
+        # difflib uses a space, rather than a tab
+        l[0] = l[0][:-2] + "\t" + ad + "\n"
+        l[1] = l[1][:-2] + "\t" + bd + "\n"
 
     for ln in xrange(len(l)):
         if l[ln][-1] != '\n':