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provide a nice @{...} syntax to always mean the current branch reflog

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This is shorter than HEAD@{...} and being nameless it has no semantic
issues.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Nicolas Pitre 2007-02-01 17:29:33 -05:00 committed by Junio C Hamano
parent fe55851624
commit 11cf8801d7
1 changed files with 11 additions and 6 deletions
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17
sha1_name.c
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@ -279,7 +279,7 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
/* basic@{time or number} format to query ref-log */
reflog_len = at = 0;
if (str[len-1] == '}') {
for (at = 1; at < len - 1; at++) {
for (at = 0; at < len - 1; at++) {
if (str[at] == '@' && str[at+1] == '{') {
reflog_len = (len-1) - (at+2);
len = at;
@ -289,10 +289,14 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
}
/* Accept only unambiguous ref paths. */
if (ambiguous_path(str, len))
if (len && ambiguous_path(str, len))
return -1;
refs_found = dwim_ref(str, len, sha1, &real_ref);
if (!len && reflog_len) {
/* allow "@{...}" to mean the current branch reflog */
refs_found = dwim_ref("HEAD", 4, sha1, &real_ref);
} else
refs_found = dwim_ref(str, len, sha1, &real_ref);
if (!refs_found)
return -1;
@ -312,11 +316,12 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
* In the mean time prevent people from getting used to
* such a synonym until the work is completed.
*/
if (!strncmp("HEAD", str, len) &&
if (len && !strncmp("HEAD", str, len) &&
!strncmp(real_ref, "refs/", 5)) {
error("reflog for HEAD has not been implemented yet\n"
"Maybe you could try %s%s instead.",
strchr(real_ref+5, '/')+1, str + len);
"Maybe you could try %s%s instead, "
"or just %s for current branch..",
strchr(real_ref+5, '/')+1, str+len, str+len);
exit(-1);
}