Re: [PATCH 1/5] t/t7004-tag: test handling of rfc1991 signatures

Currently, git expects "-----BEGIN PGP SIGNATURE-----" at the beginning of a
signature. But gpg uses "MESSAGE" instead of "SIGNATURE" when used with
the "rfc1991" option. This leads to git's failing to verify it's own
signed tags, among other problems.

Add tests for all code paths (tag -v, tag -l -n largenumber, tag -f
without -m) where signature detection matters.

Reported-by: Stephan Hugel <redacted>
Signed-off-by: Michael J Gruber <redacted>
---
 t/t7004-tag.sh |   43 +++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 43 insertions(+), 0 deletions(-)

diff --git a/t/t7004-tag.sh b/t/t7004-tag.sh
index ac943f5..22dcc45 100755
--- a/t/t7004-tag.sh
+++ b/t/t7004-tag.sh

@@ -1030,6 +1030,49 @@ test_expect_success GPG \
 	test_cmp expect actual
 '
 
+# usage with rfc1991 signatures
+echo "rfc1991" > gpghome/gpg.conf
+get_tag_header rfc1991-signed-tag $commit commit $time >expect
+echo "RFC1991 signed tag" >>expect
+echo '-----BEGIN PGP MESSAGE-----' >>expect
+test_expect_success GPG \
+	'creating a signed tag with rfc1991' '
+	git tag -s -m "RFC1991 signed tag" rfc1991-signed-tag $commit &&
+	get_tag_msg rfc1991-signed-tag >actual &&
+	test_cmp expect actual
+'
+
+cat >fakeeditor <<'EOF'
+#!/bin/sh
+cp "$1" actual
+EOF
+chmod +x fakeeditor
+
+test_expect_failure GPG \
+...
+'
+
+rm -f gpghome/gpg.conf