Add support for ^{tag} to the disambiguation logic. Before this ^{tag}
would simply be ignored:
$ git rev-parse e8f2^{tag}
error: short SHA1 e8f2 is ambiguous
hint: The candidates are:
hint: e8f2650052 tag v2.17.0
hint: e8f21caf94 commit 2013-06-24 - bash prompt: print unique detached
HEAD abbreviated object name
hint: e8f26250fa commit 2017-02-03 - Merge pull request #996 from
jeffhostetler/jeffhostetler/register_rename_src
hint: e8f2bc0c06 commit 2015-05-10 - Documentation: note behavior for
multiple remote.url entries
hint: e8f2093055 tree
hint: e8f25a3a50 tree
hint: e8f28d537c tree
hint: e8f2cf6ec0 tree
hint: e8f21d02f7 blob
hint: e8f21d577c blob
hint: e8f2867228 blob
hint: e8f2a35526 blob
e8f2^{tag}
Now the logic added in ed1ca6025f ("peel_onion: disambiguate to favor
tree-ish when we know we want a tree-ish", 2013-03-31) has been
extended to support it.
$ git rev-parse e8f2^{tag}
e8f2650052f3ff646023725e388ea1112b020e79
Signed-off-by: Ævar Arnfjörð Bjarmason <ava...@gmail.com>
---
cache.h | 5 +++--
sha1-name.c | 13 ++++++++++++-
t/t1512-rev-parse-disambiguation.sh | 5 ++++-
3 files changed, 19 insertions(+), 4 deletions(-)
diff --git a/cache.h b/cache.h
index 77b7acebb6..3f6a292ba6 100644
--- a/cache.h
+++ b/cache.h
@@ -1322,8 +1322,9 @@ struct object_context {
#define GET_OID_TREE 010
#define GET_OID_TREEISH 020
#define GET_OID_BLOB 040
-#define GET_OID_FOLLOW_SYMLINKS 0100
-#define GET_OID_RECORD_PATH 0200
+#define GET_OID_TAG 0100
+#define GET_OID_FOLLOW_SYMLINKS 0200
+#define GET_OID_RECORD_PATH 0400
#define GET_OID_ONLY_TO_DIE 04000
#define GET_OID_DISAMBIGUATORS \
diff --git a/sha1-name.c b/sha1-name.c
index 46d8b1afa6..68d5f65362 100644
--- a/sha1-name.c
+++ b/sha1-name.c
@@ -221,6 +221,12 @@ static int finish_object_disambiguation(struct
disambiguate_state *ds,
return 0;
}
+static int disambiguate_tag_only(const struct object_id *oid, void
*cb_data_unused)
+{
+ int kind = oid_object_info(oid, NULL);
+ return kind == OBJ_TAG;
+}
+
static int disambiguate_commit_only(const struct object_id *oid, void
*cb_data_unused)
{
int kind = oid_object_info(oid, NULL);
@@ -288,7 +294,8 @@ int set_disambiguate_hint_config(const char *var, const
char *value)
{ "committish", disambiguate_committish_only },
{ "tree", disambiguate_tree_only },
{ "treeish", disambiguate_treeish_only },
- { "blob", disambiguate_blob_only }
+ { "blob", disambiguate_blob_only },
+ { "tag", disambiguate_tag_only }
};
int i;
@@ -429,6 +436,8 @@ static int get_short_oid(const char *name, int len, struct
object_id *oid,
ds.fn = disambiguate_treeish_only;
else if (flags & GET_OID_BLOB)
ds.fn = disambiguate_blob_only;
+ else if (flags & GET_OID_TAG)
+ ds.fn = disambiguate_tag_only;
else
ds.fn = default_disambiguate_hint;
@@ -958,6 +967,8 @@ static int peel_onion(const char *name, int len, struct
object_id *oid,
lookup_flags &= ~GET_OID_DISAMBIGUATORS;
if (expected_type == OBJ_COMMIT)
lookup_flags |= GET_OID_COMMITTISH;
+ else if (expected_type == OBJ_TAG)
+ lookup_flags |= GET_OID_TAG;
else if (expected_type == OBJ_TREE)
lookup_flags |= GET_OID_TREEISH;
diff --git a/t/t1512-rev-parse-disambiguation.sh
b/t/t1512-rev-parse-disambiguation.sh
index 711704ba5a..c7ceda2f21 100755
--- a/t/t1512-rev-parse-disambiguation.sh
+++ b/t/t1512-rev-parse-disambiguation.sh
@@ -334,7 +334,10 @@ test_expect_success C_LOCALE_OUTPUT 'ambiguity hints
respect type' '
test_must_fail git rev-parse 000000000^{commit} 2>stderr &&
grep ^hint: stderr >hints &&
# 5 commits, 1 tag (which is a commitish), plus intro line
- test_line_count = 7 hints
+ test_line_count = 7 hints &&
+ git rev-parse 000000000^{tag} >stdout &&
+ test_line_count = 1 stdout &&
+ grep -q ^0000000000f8f stdout
'
test_expect_success C_LOCALE_OUTPUT 'failed type-selector still shows hint' '
--
2.17.0.290.gded63e768a
