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diff --git a/t/t4007-rename-3.sh b/t/t4007-rename-3.sh
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+#!/bin/sh
+#
+# Copyright (c) 2005 Junio C Hamano
+#
+
+test_description='Rename interaction with pathspec.
+
+'
+. ./test-lib.sh
+. ../diff-lib.sh ;# test-lib chdir's into trash
+
+test_expect_success \
+ 'prepare reference tree' \
+ 'mkdir path0 path1 &&
+ cp ../../COPYING path0/COPYING &&
+ git update-index --add path0/COPYING &&
+ tree=$(git write-tree) &&
+ echo $tree'
+
+test_expect_success \
+ 'prepare work tree' \
+ 'cp path0/COPYING path1/COPYING &&
+ git update-index --add --remove path0/COPYING path1/COPYING'
+
+# In the tree, there is only path0/COPYING. In the cache, path0 and
+# path1 both have COPYING and the latter is a copy of path0/COPYING.
+# Comparing the full tree with cache should tell us so.
+
+git diff-index -C --find-copies-harder $tree >current
+
+cat >expected <<\EOF
+:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 6ff87c4664981e4397625791c8ea3bbb5f2279a3 C100 path0/COPYING path1/COPYING
+EOF
+
+test_expect_success \
+ 'validate the result (#1)' \
+ 'compare_diff_raw current expected'
+
+# In the tree, there is only path0/COPYING. In the cache, path0 and
+# path1 both have COPYING and the latter is a copy of path0/COPYING.
+# However when we say we care only about path1, we should just see
+# path1/COPYING suddenly appearing from nowhere, not detected as
+# a copy from path0/COPYING.
+
+git diff-index -C $tree path1 >current
+
+cat >expected <<\EOF
+:000000 100644 0000000000000000000000000000000000000000 6ff87c4664981e4397625791c8ea3bbb5f2279a3 A path1/COPYING
+EOF
+
+test_expect_success \
+ 'validate the result (#2)' \
+ 'compare_diff_raw current expected'
+
+test_expect_success \
+ 'tweak work tree' \
+ 'rm -f path0/COPYING &&
+ git update-index --remove path0/COPYING'
+
+# In the tree, there is only path0/COPYING. In the cache, path0 does
+# not have COPYING anymore and path1 has COPYING which is a copy of
+# path0/COPYING. Showing the full tree with cache should tell us about
+# the rename.
+
+git diff-index -C $tree >current
+
+cat >expected <<\EOF
+:100644 100644 6ff87c4664981e4397625791c8ea3bbb5f2279a3 6ff87c4664981e4397625791c8ea3bbb5f2279a3 R100 path0/COPYING path1/COPYING
+EOF
+
+test_expect_success \
+ 'validate the result (#3)' \
+ 'compare_diff_raw current expected'
+
+# In the tree, there is only path0/COPYING. In the cache, path0 does
+# not have COPYING anymore and path1 has COPYING which is a copy of
+# path0/COPYING. When we say we care only about path1, we should just
+# see path1/COPYING appearing from nowhere.
+
+git diff-index -C $tree path1 >current
+
+cat >expected <<\EOF
+:000000 100644 0000000000000000000000000000000000000000 6ff87c4664981e4397625791c8ea3bbb5f2279a3 A path1/COPYING
+EOF
+
+test_expect_success \
+ 'validate the result (#4)' \
+ 'compare_diff_raw current expected'
+
+test_done