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diff --git a/t/t2001-checkout-cache-clash.sh b/t/t2001-checkout-cache-clash.sh
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+#!/bin/sh
+#
+# Copyright (c) 2005 Junio C Hamano
+#
+
+test_description='git-checkout-index test.
+
+This test registers the following filesystem structure in the cache:
+
+    path0/file0	- a file in a directory
+    path1/file1 - a file in a directory
+
+and attempts to check it out when the work tree has:
+
+    path0/file0 - a file in a directory
+    path1       - a symlink pointing at "path0"
+
+Checkout cache should fail to extract path1/file1 because the leading
+path path1 is occupied by a non-directory.  With "-f" it should remove
+the symlink path1 and create directory path1 and file path1/file1.
+'
+. ./test-lib.sh
+
+show_files() {
+	# show filesystem files, just [-dl] for type and name
+	find path? -ls |
+	sed -e 's/^[0-9]* * [0-9]* * \([-bcdl]\)[^ ]* *[0-9]* *[^ ]* *[^ ]* *[0-9]* [A-Z][a-z][a-z] [0-9][0-9] [^ ]* /fs: \1 /'
+	# what's in the cache, just mode and name
+	git-ls-files --stage |
+	sed -e 's/^\([0-9]*\) [0-9a-f]* [0-3] /ca: \1 /'
+	# what's in the tree, just mode and name.
+	git-ls-tree -r "$1" |
+	sed -e 's/^\([0-9]*\)	[^ ]*	[0-9a-f]*	/tr: \1 /'
+}
+
+mkdir path0
+date >path0/file0
+test_expect_success \
+    'git-update-index --add path0/file0' \
+    'git-update-index --add path0/file0'
+test_expect_success \
+    'writing tree out with git-write-tree' \
+    'tree1=$(git-write-tree)'
+test_debug 'show_files $tree1'
+
+mkdir path1
+date >path1/file1
+test_expect_success \
+    'git-update-index --add path1/file1' \
+    'git-update-index --add path1/file1'
+test_expect_success \
+    'writing tree out with git-write-tree' \
+    'tree2=$(git-write-tree)'
+test_debug 'show_files $tree2'
+
+rm -fr path1
+test_expect_success \
+    'read previously written tree and checkout.' \
+    'git-read-tree -m $tree1 && git-checkout-index -f -a'
+test_debug 'show_files $tree1'
+
+ln -s path0 path1
+test_expect_success \
+    'git-update-index --add a symlink.' \
+    'git-update-index --add path1'
+test_expect_success \
+    'writing tree out with git-write-tree' \
+    'tree3=$(git-write-tree)'
+test_debug 'show_files $tree3'
+
+# Morten says "Got that?" here.
+# Test begins.
+
+test_expect_success \
+    'read previously written tree and checkout.' \
+    'git-read-tree $tree2 && git-checkout-index -f -a'
+test_debug 'show_files $tree2'
+
+test_expect_success \
+    'checking out conflicting path with -f' \
+    'test ! -h path0 && test -d path0 &&
+     test ! -h path1 && test -d path1 &&
+     test ! -h path0/file0 && test -f path0/file0 &&
+     test ! -h path1/file1 && test -f path1/file1'
+
+test_done