tag -d: print sha1 of deleted tag

Michael J Gruber · gitster · commit 0a043b1fe561 · 2009-12-10T18:45:34.000-08:00
Print the sha1 of the deleted tag (in addition to the tag name) so that
one can easily recreate a mistakenly deleted tag:

git tag -d tagname
Deleted tag 'tagname' (was DEADBEEF)
git tag 'tagname' DEADBEEF

We output the previous ref also in the case of forcefully overwriting
tags.

Signed-off-by: Michael J Gruber &lt;git@drmicha.warpmail.net&gt;
Suggested-by: Jari Aalto &lt;jari.aalto@cante.net&gt;
Helped-by: Björn Steinbrink &lt;B.Steinbrink@gmx.de&gt;
Helped-by: Jeff King &lt;peff@peff.net&gt;
Helped-by: Zoltán Füzesi &lt;zfuzesi@eaglet.hu&gt;
Signed-off-by: Junio C Hamano &lt;gitster@pobox.com&gt;
diff --git a/builtin-tag.c b/builtin-tag.c
@@ -140,7 +140,7 @@ static int delete_tag(const char *name, const char *ref,
 {
 	if (delete_ref(ref, sha1, 0))
 		return 1;
-	printf("Deleted tag '%s'\n", name);
+	printf("Deleted tag '%s' (was %s)\n", name, find_unique_abbrev(sha1, DEFAULT_ABBREV));
 	return 0;
 }
 
@@ -479,6 +479,8 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
 		die("%s: cannot lock the ref", ref);
 	if (write_ref_sha1(lock, object, NULL) < 0)
 		die("%s: cannot update the ref", ref);
+	if (force && hashcmp(prev, object))
+		printf("Updated tag '%s' (was %s)\n", tag, find_unique_abbrev(prev, DEFAULT_ABBREV));
 
 	strbuf_release(&buf);
 	return 0;
