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authorRichard Hansen <rhansen@bbn.com>2013-09-03 15:50:16 -0400
committerJunio C Hamano <gitster@pobox.com>2013-09-03 13:09:17 -0700
commit75aa26d34c4a80142512bd980a416b0fb30044c1 (patch)
tree15871e0fb3d80909d16f9db8ef77108fb1c97d80 /sha1_name.c
parente230c568c4b9a991e3175e5f65171a566fd8e39c (diff)
downloadgit-75aa26d34c4a80142512bd980a416b0fb30044c1.tar.gz
git-75aa26d34c4a80142512bd980a416b0fb30044c1.tar.xz
peel_onion(): add support for <rev>^{tag}
Complete the <rev>^{<type>} family of object descriptors by having <rev>^{tag} dereference <rev> until a tag object is found (or fail if unable). At first glance this may not seem very useful, as commits, trees, and blobs cannot be peeled to a tag, and a tag would just peel to itself. However, this can be used to ensure that <rev> names a tag object: $ git rev-parse --verify v1.8.4^{tag} 04f013dc38d7512eadb915eba22efc414f18b869 $ git rev-parse --verify master^{tag} error: master^{tag}: expected tag type, but the object dereferences to tree type fatal: Needed a single revision Users can already ensure that <rev> is a tag object by checking the output of 'git cat-file -t <rev>', but: * users may expect <rev>^{tag} to exist given that <rev>^{commit}, <rev>^{tree}, and <rev>^{blob} all exist * this syntax is more convenient/natural in some circumstances Signed-off-by: Richard Hansen <rhansen@bbn.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'sha1_name.c')
-rw-r--r--sha1_name.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sha1_name.c b/sha1_name.c
index 65ad066d9..6dc496deb 100644
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -679,6 +679,8 @@ static int peel_onion(const char *name, int len, unsigned char *sha1)
sp++; /* beginning of type name, or closing brace for empty */
if (!strncmp(commit_type, sp, 6) && sp[6] == '}')
expected_type = OBJ_COMMIT;
+ else if (!strncmp(tag_type, sp, 3) && sp[3] == '}')
+ expected_type = OBJ_TAG;
else if (!strncmp(tree_type, sp, 4) && sp[4] == '}')
expected_type = OBJ_TREE;
else if (!strncmp(blob_type, sp, 4) && sp[4] == '}')