apply: demonstrate a problem applying svn diffs

Subversion generates diffs that contain funny ---/+++ lines containing
more than just the file names. Example:

	--- a/trunk/README	(revision 4711)
	+++ /dev/null	(nonexistent)

Let's add a test case demonstrating that apply cannot handle the
/dev/null line (although it can handle the trunk/README line just fine).

Reported in https://github.com/git-for-windows/git/issues/1489

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t4135-apply-weird-filenames.sh

@@ -89,4 +89,21 @@ test_expect_success 'traditional, whitespace-damaged, colon in timezone' '
 	test_cmp expected "post image.txt"
 '
 
+cat >diff-from-svn <<\EOF
+Index: Makefile
+===================================================================
+diff --git a/branches/Makefile
+deleted file mode 100644
+--- a/branches/Makefile	(revision 13)
++++ /dev/null	(nonexistent)
+@@ +1 0,0 @@
+-
+EOF
+
+test_expect_failure 'apply handles a diff generated by Subversion' '
+	>Makefile &&
+	git apply -p2 diff-from-svn &&
+	test_path_is_missing Makefile
+'
+
 test_done