diff --git a/t/t7004-tag.sh b/t/t7004-tag.sh
new file mode 100755
index 0000000000..5d15449be5
--- /dev/null
+++ b/t/t7004-tag.sh
@@ -0,0 +1,686 @@
+#!/bin/sh
+#
+# Copyright (c) 2007 Carlos Rica
+#
+
+test_description='git-tag
+
+Basic tests for operations with tags.'
+
+. ./test-lib.sh
+
+# creating and listing lightweight tags:
+
+tag_exists () {
+	git show-ref --quiet --verify refs/tags/"$1"
+}
+
+# todo: git tag -l now returns always zero, when fixed, change this test
+test_expect_success 'listing all tags in an empty tree should succeed' \
+	'git tag -l'
+
+test_expect_success 'listing all tags in an empty tree should output nothing' \
+	'test `git-tag -l | wc -l` -eq 0'
+
+test_expect_failure 'looking for a tag in an empty tree should fail' \
+	'tag_exists mytag'
+
+test_expect_success 'creating a tag in an empty tree should fail' '
+	! git-tag mynotag &&
+	! tag_exists mynotag
+'
+
+test_expect_success 'creating a tag for HEAD in an empty tree should fail' '
+	! git-tag mytaghead HEAD &&
+	! tag_exists mytaghead
+'
+
+test_expect_success 'creating a tag for an unknown revision should fail' '
+	! git-tag mytagnorev aaaaaaaaaaa &&
+	! tag_exists mytagnorev
+'
+
+# commit used in the tests, test_tick is also called here to freeze the date:
+test_expect_success 'creating a tag using default HEAD should succeed' '
+	test_tick &&
+	echo foo >foo &&
+	git add foo &&
+	git commit -m Foo &&
+	git tag mytag
+'
+
+test_expect_success 'listing all tags if one exists should succeed' \
+	'git-tag -l'
+
+test_expect_success 'listing all tags if one exists should output that tag' \
+	'test `git-tag -l` = mytag'
+
+# pattern matching:
+
+test_expect_success 'listing a tag using a matching pattern should succeed' \
+	'git-tag -l mytag'
+
+test_expect_success \
+	'listing a tag using a matching pattern should output that tag' \
+	'test `git-tag -l mytag` = mytag'
+
+# todo: git tag -l now returns always zero, when fixed, change this test
+test_expect_success \
+	'listing tags using a non-matching pattern should suceed' \
+	'git-tag -l xxx'
+
+test_expect_success \
+	'listing tags using a non-matching pattern should output nothing' \
+	'test `git-tag -l xxx | wc -l` -eq 0'
+
+# special cases for creating tags:
+
+test_expect_failure \
+	'trying to create a tag with the name of one existing should fail' \
+	'git tag mytag'
+
+test_expect_success \
+	'trying to create a tag with a non-valid name should fail' '
+	test `git-tag -l | wc -l` -eq 1 &&
+	! git tag "" &&
+	! git tag .othertag &&
+	! git tag "other tag" &&
+	! git tag "othertag^" &&
+	! git tag "other~tag" &&
+	test `git-tag -l | wc -l` -eq 1
+'
+
+test_expect_success 'creating a tag using HEAD directly should succeed' '
+	git tag myhead HEAD &&
+	tag_exists myhead
+'
+
+# deleting tags:
+
+test_expect_success 'trying to delete an unknown tag should fail' '
+	! tag_exists unknown-tag &&
+	! git-tag -d unknown-tag
+'
+
+cat >expect <<EOF
+myhead
+mytag
+EOF
+test_expect_success \
+	'trying to delete tags without params should succeed and do nothing' '
+	git tag -l > actual && git diff expect actual &&
+	git-tag -d &&
+	git tag -l > actual && git diff expect actual
+'
+
+test_expect_success \
+	'deleting two existing tags in one command should succeed' '
+	tag_exists mytag &&
+	tag_exists myhead &&
+	git-tag -d mytag myhead &&
+	! tag_exists mytag &&
+	! tag_exists myhead
+'
+
+test_expect_success \
+	'creating a tag with the name of another deleted one should succeed' '
+	! tag_exists mytag &&
+	git-tag mytag &&
+	tag_exists mytag
+'
+
+test_expect_success \
+	'trying to delete two tags, existing and not, should fail in the 2nd' '
+	tag_exists mytag &&
+	! tag_exists myhead &&
+	! git-tag -d mytag anothertag &&
+	! tag_exists mytag &&
+	! tag_exists myhead
+'
+
+test_expect_failure 'trying to delete an already deleted tag should fail' \
+	'git-tag -d mytag'
+
+# listing various tags with pattern matching:
+
+cat >expect <<EOF
+a1
+aa1
+cba
+t210
+t211
+v0.2.1
+v1.0
+v1.0.1
+v1.1.3
+EOF
+test_expect_success 'listing all tags should print them ordered' '
+	git tag v1.0.1 &&
+	git tag t211 &&
+	git tag aa1 &&
+	git tag v0.2.1 &&
+	git tag v1.1.3 &&
+	git tag cba &&
+	git tag a1 &&
+	git tag v1.0 &&
+	git tag t210 &&
+	git tag -l > actual
+	git diff expect actual
+'
+
+cat >expect <<EOF
+a1
+aa1
+cba
+EOF
+test_expect_success \
+	'listing tags with substring as pattern must print those matching' '
+	git-tag -l a > actual &&
+	git-diff expect actual
+'
+
+cat >expect <<EOF
+v0.2.1
+v1.0.1
+v1.1.3
+EOF
+test_expect_success \
+	'listing tags with substring as pattern must print those matching' '
+	git-tag -l .1 > actual &&
+	git-diff expect actual
+'
+
+cat >expect <<EOF
+t210
+t211
+EOF
+test_expect_success \
+	'listing tags with substring as pattern must print those matching' '
+	git-tag -l t21 > actual &&
+	git-diff expect actual
+'
+
+cat >expect <<EOF
+a1
+aa1
+EOF
+test_expect_success \
+	'listing tags using a name as pattern must print those matching' '
+	git-tag -l a1 > actual &&
+	git-diff expect actual
+'
+
+cat >expect <<EOF
+v1.0
+v1.0.1
+EOF
+test_expect_success \
+	'listing tags using a name as pattern must print those matching' '
+	git-tag -l v1.0 > actual &&
+	git-diff expect actual
+'
+
+cat >expect <<EOF
+v1.1.3
+EOF
+test_expect_success \
+	'listing tags with ? in the pattern should print those matching' '
+	git-tag -l "1.1?" > actual &&
+	git-diff expect actual
+'
+
+>expect
+test_expect_success \
+	'listing tags using v.* should print nothing because none have v.' '
+	git-tag -l "v.*" > actual &&
+	git-diff expect actual
+'
+
+cat >expect <<EOF
+v0.2.1
+v1.0
+v1.0.1
+v1.1.3
+EOF
+test_expect_success \
+	'listing tags using v* should print only those having v' '
+	git-tag -l "v*" > actual &&
+	git-diff expect actual
+'
+
+# creating and verifying lightweight tags:
+
+test_expect_success \
+	'a non-annotated tag created without parameters should point to HEAD' '
+	git-tag non-annotated-tag &&
+	test $(git-cat-file -t non-annotated-tag) = commit &&
+	test $(git-rev-parse non-annotated-tag) = $(git-rev-parse HEAD)
+'
+
+test_expect_failure 'trying to verify an unknown tag should fail' \
+	'git-tag -v unknown-tag'
+
+test_expect_failure \
+	'trying to verify a non-annotated and non-signed tag should fail' \
+	'git-tag -v non-annotated-tag'
+
+# creating annotated tags:
+
+get_tag_msg () {
+	git cat-file tag "$1" | sed -e "/BEGIN PGP/q"
+}
+
+# run test_tick before committing always gives the time in that timezone
+get_tag_header () {
+cat <<EOF
+object $2
+type $3
+tag $1
+tagger C O Mitter <committer@example.com> $4 -0700
+
+EOF
+}
+
+commit=$(git rev-parse HEAD)
+time=$test_tick
+
+get_tag_header annotated-tag $commit commit $time >expect
+echo "A message" >>expect
+test_expect_success \
+	'creating an annotated tag with -m message should succeed' '
+	git-tag -m "A message" annotated-tag &&
+	get_tag_msg annotated-tag >actual &&
+	git diff expect actual
+'
+
+cat >msgfile <<EOF
+Another message
+in a file.
+EOF
+get_tag_header file-annotated-tag $commit commit $time >expect
+cat msgfile >>expect
+test_expect_success \
+	'creating an annotated tag with -F messagefile should succeed' '
+	git-tag -F msgfile file-annotated-tag &&
+	get_tag_msg file-annotated-tag >actual &&
+	git diff expect actual
+'
+
+# blank and empty messages:
+
+get_tag_header empty-annotated-tag $commit commit $time >expect
+test_expect_success \
+	'creating a tag with an empty -m message should succeed' '
+	git-tag -m "" empty-annotated-tag &&
+	get_tag_msg empty-annotated-tag >actual &&
+	git diff expect actual
+'
+
+>emptyfile
+get_tag_header emptyfile-annotated-tag $commit commit $time >expect
+test_expect_success \
+	'creating a tag with an empty -F messagefile should succeed' '
+	git-tag -F emptyfile emptyfile-annotated-tag &&
+	get_tag_msg emptyfile-annotated-tag >actual &&
+	git diff expect actual
+'
+
+printf '\n\n  \n\t\nLeading blank lines\n' >blanksfile
+printf '\n\t \t  \nRepeated blank lines\n' >>blanksfile
+printf '\n\n\nTrailing spaces      \t  \n' >>blanksfile
+printf '\nTrailing blank lines\n\n\t \n\n' >>blanksfile
+get_tag_header blanks-annotated-tag $commit commit $time >expect
+cat >>expect <<EOF
+Leading blank lines
+
+Repeated blank lines
+
+Trailing spaces
+
+Trailing blank lines
+EOF
+test_expect_success \
+	'extra blanks in the message for an annotated tag should be removed' '
+	git-tag -F blanksfile blanks-annotated-tag &&
+	get_tag_msg blanks-annotated-tag >actual &&
+	git diff expect actual
+'
+
+get_tag_header blank-annotated-tag $commit commit $time >expect
+test_expect_success \
+	'creating a tag with blank -m message with spaces should succeed' '
+	git-tag -m "     " blank-annotated-tag &&
+	get_tag_msg blank-annotated-tag >actual &&
+	git diff expect actual
+'
+
+echo '     ' >blankfile
+echo ''      >>blankfile
+echo '  '    >>blankfile
+get_tag_header blankfile-annotated-tag $commit commit $time >expect
+test_expect_success \
+	'creating a tag with blank -F messagefile with spaces should succeed' '
+	git-tag -F blankfile blankfile-annotated-tag &&
+	get_tag_msg blankfile-annotated-tag >actual &&
+	git diff expect actual
+'
+
+printf '      ' >blanknonlfile
+get_tag_header blanknonlfile-annotated-tag $commit commit $time >expect
+test_expect_success \
+	'creating a tag with -F file of spaces and no newline should succeed' '
+	git-tag -F blanknonlfile blanknonlfile-annotated-tag &&
+	get_tag_msg blanknonlfile-annotated-tag >actual &&
+	git diff expect actual
+'
+
+# messages with commented lines:
+
+cat >commentsfile <<EOF
+# A comment
+
+############
+The message.
+############
+One line.
+
+
+# commented lines
+# commented lines
+
+Another line.
+# comments
+
+Last line.
+EOF
+get_tag_header comments-annotated-tag $commit commit $time >expect
+cat >>expect <<EOF
+The message.
+One line.
+
+Another line.
+
+Last line.
+EOF
+test_expect_success \
+	'creating a tag using a -F messagefile with #comments should succeed' '
+	git-tag -F commentsfile comments-annotated-tag &&
+	get_tag_msg comments-annotated-tag >actual &&
+	git diff expect actual
+'
+
+get_tag_header comment-annotated-tag $commit commit $time >expect
+test_expect_success \
+	'creating a tag with a #comment in the -m message should succeed' '
+	git-tag -m "#comment" comment-annotated-tag &&
+	get_tag_msg comment-annotated-tag >actual &&
+	git diff expect actual
+'
+
+echo '#comment' >commentfile
+echo ''         >>commentfile
+echo '####'     >>commentfile
+get_tag_header commentfile-annotated-tag $commit commit $time >expect
+test_expect_success \
+	'creating a tag with #comments in the -F messagefile should succeed' '
+	git-tag -F commentfile commentfile-annotated-tag &&
+	get_tag_msg commentfile-annotated-tag >actual &&
+	git diff expect actual
+'
+
+printf '#comment' >commentnonlfile
+get_tag_header commentnonlfile-annotated-tag $commit commit $time >expect
+test_expect_success \
+	'creating a tag with a file of #comment and no newline should succeed' '
+	git-tag -F commentnonlfile commentnonlfile-annotated-tag &&
+	get_tag_msg commentnonlfile-annotated-tag >actual &&
+	git diff expect actual
+'
+
+# trying to verify annotated non-signed tags:
+
+test_expect_success \
+	'trying to verify an annotated non-signed tag should fail' '
+	tag_exists annotated-tag &&
+	! git-tag -v annotated-tag
+'
+
+test_expect_success \
+	'trying to verify a file-annotated non-signed tag should fail' '
+	tag_exists file-annotated-tag &&
+	! git-tag -v file-annotated-tag
+'
+
+# creating and verifying signed tags:
+
+gpg --version >/dev/null
+if [ $? -eq 127 ]; then
+	echo "Skipping signed tags tests, because gpg was not found"
+	test_done
+	exit
+fi
+
+# key generation info: gpg --homedir t/t7004 --gen-key
+# Type DSA and Elgamal, size 2048 bits, no expiration date.
+# Name and email: C O Mitter <committer@example.com>
+# No password given, to enable non-interactive operation.
+
+cp -R ../t7004 ./gpghome
+chmod 0700 gpghome
+export GNUPGHOME="$(pwd)/gpghome"
+
+get_tag_header signed-tag $commit commit $time >expect
+echo 'A signed tag message' >>expect
+echo '-----BEGIN PGP SIGNATURE-----' >>expect
+test_expect_success 'creating a signed tag with -m message should succeed' '
+	git-tag -s -m "A signed tag message" signed-tag &&
+	get_tag_msg signed-tag >actual &&
+	git-diff expect actual
+'
+
+test_expect_success 'verifying a signed tag should succeed' \
+	'git-tag -v signed-tag'
+
+test_expect_success 'verifying a forged tag should fail' '
+	forged=$(git cat-file tag signed-tag |
+		sed -e "s/signed-tag/forged-tag/" |
+		git mktag) &&
+	git tag forged-tag $forged &&
+	! git-tag -v forged-tag
+'
+
+# blank and empty messages for signed tags:
+
+get_tag_header empty-signed-tag $commit commit $time >expect
+echo '-----BEGIN PGP SIGNATURE-----' >>expect
+test_expect_success \
+	'creating a signed tag with an empty -m message should succeed' '
+	git-tag -s -m "" empty-signed-tag &&
+	get_tag_msg empty-signed-tag >actual &&
+	git diff expect actual &&
+	git-tag -v empty-signed-tag
+'
+
+>sigemptyfile
+get_tag_header emptyfile-signed-tag $commit commit $time >expect
+echo '-----BEGIN PGP SIGNATURE-----' >>expect
+test_expect_success \
+	'creating a signed tag with an empty -F messagefile should succeed' '
+	git-tag -s -F sigemptyfile emptyfile-signed-tag &&
+	get_tag_msg emptyfile-signed-tag >actual &&
+	git diff expect actual &&
+	git-tag -v emptyfile-signed-tag
+'
+
+printf '\n\n  \n\t\nLeading blank lines\n' > sigblanksfile
+printf '\n\t \t  \nRepeated blank lines\n' >>sigblanksfile
+printf '\n\n\nTrailing spaces      \t  \n' >>sigblanksfile
+printf '\nTrailing blank lines\n\n\t \n\n' >>sigblanksfile
+get_tag_header blanks-signed-tag $commit commit $time >expect
+cat >>expect <<EOF
+Leading blank lines
+
+Repeated blank lines
+
+Trailing spaces
+
+Trailing blank lines
+EOF
+echo '-----BEGIN PGP SIGNATURE-----' >>expect
+test_expect_success \
+	'extra blanks in the message for a signed tag should be removed' '
+	git-tag -s -F sigblanksfile blanks-signed-tag &&
+	get_tag_msg blanks-signed-tag >actual &&
+	git diff expect actual &&
+	git-tag -v blanks-signed-tag
+'
+
+get_tag_header blank-signed-tag $commit commit $time >expect
+echo '-----BEGIN PGP SIGNATURE-----' >>expect
+test_expect_success \
+	'creating a signed tag with a blank -m message should succeed' '
+	git-tag -s -m "     " blank-signed-tag &&
+	get_tag_msg blank-signed-tag >actual &&
+	git diff expect actual &&
+	git-tag -v blank-signed-tag
+'
+
+echo '     ' >sigblankfile
+echo ''      >>sigblankfile
+echo '  '    >>sigblankfile
+get_tag_header blankfile-signed-tag $commit commit $time >expect
+echo '-----BEGIN PGP SIGNATURE-----' >>expect
+test_expect_success \
+	'creating a signed tag with blank -F file with spaces should succeed' '
+	git-tag -s -F sigblankfile blankfile-signed-tag &&
+	get_tag_msg blankfile-signed-tag >actual &&
+	git diff expect actual &&
+	git-tag -v blankfile-signed-tag
+'
+
+printf '      ' >sigblanknonlfile
+get_tag_header blanknonlfile-signed-tag $commit commit $time >expect
+echo '-----BEGIN PGP SIGNATURE-----' >>expect
+test_expect_success \
+	'creating a signed tag with spaces and no newline should succeed' '
+	git-tag -s -F sigblanknonlfile blanknonlfile-signed-tag &&
+	get_tag_msg blanknonlfile-signed-tag >actual &&
+	git diff expect actual &&
+	git-tag -v signed-tag
+'
+
+# messages with commented lines for signed tags:
+
+cat >sigcommentsfile <<EOF
+# A comment
+
+############
+The message.
+############
+One line.
+
+
+# commented lines
+# commented lines
+
+Another line.
+# comments
+
+Last line.
+EOF
+get_tag_header comments-signed-tag $commit commit $time >expect
+cat >>expect <<EOF
+The message.
+One line.
+
+Another line.
+
+Last line.
+EOF
+echo '-----BEGIN PGP SIGNATURE-----' >>expect
+test_expect_success \
+	'creating a signed tag with a -F file with #comments should succeed' '
+	git-tag -s -F sigcommentsfile comments-signed-tag &&
+	get_tag_msg comments-signed-tag >actual &&
+	git diff expect actual &&
+	git-tag -v comments-signed-tag
+'
+
+get_tag_header comment-signed-tag $commit commit $time >expect
+echo '-----BEGIN PGP SIGNATURE-----' >>expect
+test_expect_success \
+	'creating a signed tag with #commented -m message should succeed' '
+	git-tag -s -m "#comment" comment-signed-tag &&
+	get_tag_msg comment-signed-tag >actual &&
+	git diff expect actual &&
+	git-tag -v comment-signed-tag
+'
+
+echo '#comment' >sigcommentfile
+echo ''         >>sigcommentfile
+echo '####'     >>sigcommentfile
+get_tag_header commentfile-signed-tag $commit commit $time >expect
+echo '-----BEGIN PGP SIGNATURE-----' >>expect
+test_expect_success \
+	'creating a signed tag with #commented -F messagefile should succeed' '
+	git-tag -s -F sigcommentfile commentfile-signed-tag &&
+	get_tag_msg commentfile-signed-tag >actual &&
+	git diff expect actual &&
+	git-tag -v commentfile-signed-tag
+'
+
+printf '#comment' >sigcommentnonlfile
+get_tag_header commentnonlfile-signed-tag $commit commit $time >expect
+echo '-----BEGIN PGP SIGNATURE-----' >>expect
+test_expect_success \
+	'creating a signed tag with a #comment and no newline should succeed' '
+	git-tag -s -F sigcommentnonlfile commentnonlfile-signed-tag &&
+	get_tag_msg commentnonlfile-signed-tag >actual &&
+	git diff expect actual &&
+	git-tag -v commentnonlfile-signed-tag
+'
+
+# tags pointing to objects different from commits:
+
+tree=$(git rev-parse HEAD^{tree})
+blob=$(git rev-parse HEAD:foo)
+tag=$(git rev-parse signed-tag)
+
+get_tag_header tree-signed-tag $tree tree $time >expect
+echo "A message for a tree" >>expect
+echo '-----BEGIN PGP SIGNATURE-----' >>expect
+test_expect_success \
+	'creating a signed tag pointing to a tree should succeed' '
+	git-tag -s -m "A message for a tree" tree-signed-tag HEAD^{tree} &&
+	get_tag_msg tree-signed-tag >actual &&
+	git diff expect actual
+'
+
+get_tag_header blob-signed-tag $blob blob $time >expect
+echo "A message for a blob" >>expect
+echo '-----BEGIN PGP SIGNATURE-----' >>expect
+test_expect_success \
+	'creating a signed tag pointing to a blob should succeed' '
+	git-tag -s -m "A message for a blob" blob-signed-tag HEAD:foo &&
+	get_tag_msg blob-signed-tag >actual &&
+	git diff expect actual
+'
+
+get_tag_header tag-signed-tag $tag tag $time >expect
+echo "A message for another tag" >>expect
+echo '-----BEGIN PGP SIGNATURE-----' >>expect
+test_expect_success \
+	'creating a signed tag pointing to another tag should succeed' '
+	git-tag -s -m "A message for another tag" tag-signed-tag signed-tag &&
+	get_tag_msg tag-signed-tag >actual &&
+	git diff expect actual
+'
+
+# try to verify without gpg:
+
+rm -rf gpghome
+test_expect_failure \
+	'verify signed tag fails when public key is not present' \
+	'git-tag -v signed-tag'
+
+test_done
diff --git a/t/t7004/pubring.gpg b/t/t7004/pubring.gpg
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diff --git a/t/t7004/random_seed b/t/t7004/random_seed
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index 0000000000..8fed1339ed
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diff --git a/t/t7004/secring.gpg b/t/t7004/secring.gpg
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index 0000000000..d831cd9eb3
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