Merge branch 'jc/describe-misnamed-annotated-tag'
When "git describe C" finds an annotated tag with tagname A to be
the best name to explain commit C, and the tag is stored in a
"wrong" place in the refs/tags hierarchy, e.g. refs/tags/B, the
command gave a warning message but used A (not B) to describe C.
If C is exactly at the tag, the describe output would be "A", but
"git rev-parse A^0" would not be equal as "git rev-parse C^0". The
behavior of the command has been changed to use the "long" form
i.e. A-0-gOBJECTNAME, which is correctly interpreted by rev-parse.
* jc/describe-misnamed-annotated-tag:
describe: force long format for a name based on a mislocated tag
diff --git a/builtin/describe.c b/builtin/describe.c
index 420f4c6..21d2cb9 100644
--- a/builtin/describe.c
+++ b/builtin/describe.c
@@ -54,6 +54,7 @@
struct tag *tag;
unsigned prio:2; /* annotated tag = 2, tag = 1, head = 0 */
unsigned name_checked:1;
+ unsigned misnamed:1;
struct object_id oid;
char *path;
};
@@ -132,6 +133,7 @@
e->tag = tag;
e->prio = prio;
e->name_checked = 0;
+ e->misnamed = 0;
oidcpy(&e->oid, oid);
free(e->path);
e->path = xstrdup(path);
@@ -275,10 +277,11 @@
die(_("annotated tag %s not available"), n->path);
}
if (n->tag && !n->name_checked) {
- if (!n->tag->tag)
- die(_("annotated tag %s has no embedded name"), n->path);
- if (strcmp(n->tag->tag, all ? n->path + 5 : n->path))
- warning(_("tag '%s' is really '%s' here"), n->tag->tag, n->path);
+ if (strcmp(n->tag->tag, all ? n->path + 5 : n->path)) {
+ warning(_("tag '%s' is externally known as '%s'"),
+ n->path, n->tag->tag);
+ n->misnamed = 1;
+ }
n->name_checked = 1;
}
@@ -314,7 +317,7 @@
* Exact match to an existing ref.
*/
append_name(n, dst);
- if (longformat)
+ if (n->misnamed || longformat)
append_suffix(0, n->tag ? get_tagged_oid(n->tag) : oid, dst);
if (suffix)
strbuf_addstr(dst, suffix);
@@ -463,7 +466,7 @@
}
append_name(all_matches[0].name, dst);
- if (abbrev)
+ if (all_matches[0].name->misnamed || abbrev)
append_suffix(all_matches[0].depth, &cmit->object.oid, dst);
if (suffix)
strbuf_addstr(dst, suffix);
diff --git a/t/t6120-describe.sh b/t/t6120-describe.sh
index 34502e3..f822d5d 100755
--- a/t/t6120-describe.sh
+++ b/t/t6120-describe.sh
@@ -129,12 +129,30 @@
mv .git/refs/tags/A .git/refs/tags/Q
'
cat - >err.expect <<EOF
-warning: tag 'A' is really 'Q' here
+warning: tag 'Q' is externally known as 'A'
EOF
check_describe A-* HEAD
test_expect_success 'warning was displayed for Q' '
test_i18ncmp err.expect err.actual
'
+test_expect_success 'misnamed annotated tag forces long output' '
+ description=$(git describe --no-long Q^0) &&
+ expr "$description" : "A-0-g[0-9a-f]*$" &&
+ git rev-parse --verify "$description" >actual &&
+ git rev-parse --verify Q^0 >expect &&
+ test_cmp expect actual
+'
+
+test_expect_success 'abbrev=0 will not break misplaced tag (1)' '
+ description=$(git describe --abbrev=0 Q^0) &&
+ expr "$description" : "A-0-g[0-9a-f]*$"
+'
+
+test_expect_success 'abbrev=0 will not break misplaced tag (2)' '
+ description=$(git describe --abbrev=0 c^0) &&
+ expr "$description" : "A-1-g[0-9a-f]*$"
+'
+
test_expect_success 'rename tag Q back to A' '
mv .git/refs/tags/Q .git/refs/tags/A
'
