diff options
| -rw-r--r-- | sha1_name.c | 17 | ||||
| -rw-r--r-- | show-branch.c | 13 |
2 files changed, 24 insertions, 6 deletions
diff --git a/sha1_name.c b/sha1_name.c index be1755a70..faac158b1 100644 --- a/sha1_name.c +++ b/sha1_name.c @@ -236,6 +236,7 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1) NULL }; const char **p; + int found = 0; if (len == 40 && !get_sha1_hex(str, sha1)) return 0; @@ -246,10 +247,20 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1) for (p = prefix; *p; p++) { char *pathname = git_path("%s/%.*s", *p, len, str); - if (!read_ref(pathname, sha1)) - return 0; + if (!read_ref(pathname, sha1)) { + /* Must be unique; i.e. when heads/foo and + * tags/foo are both present, reject "foo". + * Note that read_ref() eventually calls + * get_sha1_hex() which can smudge initial + * part of the buffer even if what is read + * is found to be invalid halfway. + */ + if (1 < found++) + return -1; + } } - + if (found == 1) + return 0; return -1; } diff --git a/show-branch.c b/show-branch.c index 631336cd9..d8808eefc 100644 --- a/show-branch.c +++ b/show-branch.c @@ -313,9 +313,16 @@ static int append_ref(const char *refname, const unsigned char *sha1) static int append_head_ref(const char *refname, const unsigned char *sha1) { - if (strncmp(refname, "refs/heads/", 11)) + unsigned char tmp[20]; + int ofs = 11; + if (strncmp(refname, "refs/heads/", ofs)) return 0; - return append_ref(refname + 11, sha1); + /* If both heads/foo and tags/foo exists, get_sha1 would + * get confused. + */ + if (get_sha1(refname + ofs, tmp) || memcmp(tmp, sha1, 20)) + ofs = 5; + return append_ref(refname + ofs, sha1); } static int append_tag_ref(const char *refname, const unsigned char *sha1) @@ -470,7 +477,7 @@ int main(int ac, char **av) if (MAX_REVS <= num_rev) die("cannot handle more than %d revs.", MAX_REVS); if (get_sha1(ref_name[num_rev], revkey)) - usage(show_branch_usage); + die("'%s' is not a valid ref.\n", ref_name[num_rev]); commit = lookup_commit_reference(revkey); if (!commit) die("cannot find commit %s (%s)", |