tag: recognize rfc1991 signatures

We have always been creating rfc1991 signatures for users with "rfc1991"
in their gpg config but failed to recognize them (tag -l -n largenumber)
and verify them (tag -v, verify-tag).

Make good use of the refactored signature detection and let us recognize
and verify those signatures also.

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/tag.c b/tag.c
index d4f3080..f789744 100644
--- a/tag.c
+++ b/tag.c
@@ -5,6 +5,7 @@
 #include "blob.h"
 
 #define PGP_SIGNATURE "-----BEGIN PGP SIGNATURE-----"
+#define PGP_MESSAGE "-----BEGIN PGP MESSAGE-----"
 
 const char *tag_type = "tag";
 
@@ -140,7 +141,8 @@ size_t parse_signature(const char *buf, unsigned long size)
 {
 	char *eol;
 	size_t len = 0;
-	while (len < size && prefixcmp(buf + len, PGP_SIGNATURE)) {
+	while (len < size && prefixcmp(buf + len, PGP_SIGNATURE) &&
+			prefixcmp(buf + len, PGP_MESSAGE)) {
 		eol = memchr(buf + len, '\n', size - len);
 		len += eol ? eol - (buf + len) + 1 : size - len;
 	}