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diff --git a/t/t7001-mv.sh b/t/t7001-mv.sh
new file mode 100755
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+++ b/t/t7001-mv.sh
@@ -0,0 +1,121 @@
+#!/bin/sh
+
+test_description='git mv in subdirs'
+. ./test-lib.sh
+
+test_expect_success \
+    'prepare reference tree' \
+    'mkdir path0 path1 &&
+     cp ../../COPYING path0/COPYING &&
+     git add path0/COPYING &&
+     git-commit -m add -a'
+
+test_expect_success \
+    'moving the file out of subdirectory' \
+    'cd path0 && git mv COPYING ../path1/COPYING'
+
+# in path0 currently
+test_expect_success \
+    'commiting the change' \
+    'cd .. && git-commit -m move-out -a'
+
+test_expect_success \
+    'checking the commit' \
+    'git diff-tree -r -M --name-status  HEAD^ HEAD | \
+    grep "^R100..*path0/COPYING..*path1/COPYING"'
+
+test_expect_success \
+    'moving the file back into subdirectory' \
+    'cd path0 && git mv ../path1/COPYING COPYING'
+
+# in path0 currently
+test_expect_success \
+    'commiting the change' \
+    'cd .. && git-commit -m move-in -a'
+
+test_expect_success \
+    'checking the commit' \
+    'git diff-tree -r -M --name-status  HEAD^ HEAD | \
+    grep "^R100..*path1/COPYING..*path0/COPYING"'
+
+test_expect_success \
+    'adding another file' \
+    'cp ../../README path0/README &&
+     git add path0/README &&
+     git-commit -m add2 -a'
+
+test_expect_success \
+    'moving whole subdirectory' \
+    'git mv path0 path2'
+
+test_expect_success \
+    'commiting the change' \
+    'git-commit -m dir-move -a'
+
+test_expect_success \
+    'checking the commit' \
+    'git diff-tree -r -M --name-status  HEAD^ HEAD | \
+     grep "^R100..*path0/COPYING..*path2/COPYING" &&
+     git diff-tree -r -M --name-status  HEAD^ HEAD | \
+     grep "^R100..*path0/README..*path2/README"'
+
+test_expect_success \
+    'succeed when source is a prefix of destination' \
+    'git mv path2/COPYING path2/COPYING-renamed'
+
+test_expect_success \
+    'moving whole subdirectory into subdirectory' \
+    'git mv path2 path1'
+
+test_expect_success \
+    'commiting the change' \
+    'git-commit -m dir-move -a'
+
+test_expect_success \
+    'checking the commit' \
+    'git diff-tree -r -M --name-status  HEAD^ HEAD | \
+     grep "^R100..*path2/COPYING..*path1/path2/COPYING" &&
+     git diff-tree -r -M --name-status  HEAD^ HEAD | \
+     grep "^R100..*path2/README..*path1/path2/README"'
+
+test_expect_success \
+    'do not move directory over existing directory' \
+    'mkdir path0 && mkdir path0/path2 && ! git mv path2 path0'
+
+test_expect_success \
+    'move into "."' \
+    'git mv path1/path2/ .'
+
+test_expect_success "Michael Cassar's test case" '
+	rm -fr .git papers partA &&
+	git init &&
+	mkdir -p papers/unsorted papers/all-papers partA &&
+	echo a > papers/unsorted/Thesis.pdf &&
+	echo b > partA/outline.txt &&
+	echo c > papers/unsorted/_another &&
+	git add papers partA &&
+	T1=`git write-tree` &&
+
+	git mv papers/unsorted/Thesis.pdf papers/all-papers/moo-blah.pdf &&
+
+	T=`git write-tree` &&
+	git ls-tree -r $T | grep partA/outline.txt || {
+		git ls-tree -r $T
+		(exit 1)
+	}
+'
+
+rm -fr papers partA path?
+
+test_expect_success "Sergey Vlasov's test case" '
+	rm -fr .git &&
+	git init &&
+	mkdir ab &&
+	date >ab.c &&
+	date >ab/d &&
+	git add ab.c ab &&
+	git commit -m 'initial' &&
+	git mv ab a
+'
+
+test_done