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Merge branch 'dt/refs-backend-preamble'

In preparation for allowing different "backends" to store the refs
in a way different from the traditional "one ref per file in $GIT_DIR
or in a $GIT_DIR/packed-refs file" filesystem storage, reduce
direct filesystem access to ref-like things like CHERRY_PICK_HEAD
from scripts and programs.

* dt/refs-backend-preamble:
  git-stash: use update-ref --create-reflog instead of creating files
  update-ref and tag: add --create-reflog arg
  refs: add REF_FORCE_CREATE_REFLOG flag
  git-reflog: add exists command
  refs: new public ref function: safe_create_reflog
  refs: break out check for reflog autocreation
  refs.c: add err arguments to reflog functions
This commit is contained in:
Junio C Hamano 2015-08-03 11:01:29 -07:00
commit b6d323f164
13 changed files with 238 additions and 85 deletions

View File

@ -23,6 +23,7 @@ depending on the subcommand:
[--dry-run] [--verbose] [--all | <refs>...]
'git reflog delete' [--rewrite] [--updateref]
[--dry-run] [--verbose] ref@\{specifier\}...
'git reflog exists' <ref>
Reference logs, or "reflogs", record when the tips of branches and
other references were updated in the local repository. Reflogs are
@ -52,6 +53,9 @@ argument must be an _exact_ entry (e.g. "`git reflog delete
master@{2}`"). This subcommand is also typically not used directly by
end users.
The "exists" subcommand checks whether a ref has a reflog. It exits
with zero status if the reflog exists, and non-zero status if it does
not.
OPTIONS
-------

View File

@ -13,7 +13,7 @@ SYNOPSIS
<tagname> [<commit> | <object>]
'git tag' -d <tagname>...
'git tag' [-n[<num>]] -l [--contains <commit>] [--points-at <object>]
[--column[=<options>] | --no-column] [<pattern>...]
[--column[=<options>] | --no-column] [--create-reflog] [<pattern>...]
'git tag' -v <tagname>...
DESCRIPTION
@ -142,6 +142,9 @@ This option is only applicable when listing tags without annotation lines.
all, 'whitespace' removes just leading/trailing whitespace lines and
'strip' removes both whitespace and commentary.
--create-reflog::
Create a reflog for the tag.
<tagname>::
The name of the tag to create, delete, or describe.
The new tag name must pass all checks defined by

View File

@ -8,7 +8,7 @@ git-update-ref - Update the object name stored in a ref safely
SYNOPSIS
--------
[verse]
'git update-ref' [-m <reason>] (-d <ref> [<oldvalue>] | [--no-deref] <ref> <newvalue> [<oldvalue>] | --stdin [-z])
'git update-ref' [-m <reason>] (-d <ref> [<oldvalue>] | [--no-deref] [--create-reflog] <ref> <newvalue> [<oldvalue>] | --stdin [-z])
DESCRIPTION
-----------
@ -67,6 +67,9 @@ performs all modifications together. Specify commands of the form:
verify SP <ref> [SP <oldvalue>] LF
option SP <opt> LF
With `--create-reflog`, update-ref will create a reflog for each ref
even if one would not ordinarily be created.
Quote fields containing whitespace as if they were strings in C source
code; i.e., surrounded by double-quotes and with backslash escapes.
Use 40 "0" characters or the empty string to specify a zero value. To

View File

@ -612,22 +612,20 @@ static void update_refs_for_switch(const struct checkout_opts *opts,
if (opts->new_branch) {
if (opts->new_orphan_branch) {
if (opts->new_branch_log && !log_all_ref_updates) {
int temp;
struct strbuf log_file = STRBUF_INIT;
int ret;
const char *ref_name;
char *refname;
struct strbuf err = STRBUF_INIT;
ref_name = mkpath("refs/heads/%s", opts->new_orphan_branch);
temp = log_all_ref_updates;
log_all_ref_updates = 1;
ret = log_ref_setup(ref_name, &log_file);
log_all_ref_updates = temp;
strbuf_release(&log_file);
refname = mkpathdup("refs/heads/%s", opts->new_orphan_branch);
ret = safe_create_reflog(refname, 1, &err);
free(refname);
if (ret) {
fprintf(stderr, _("Can not do reflog for '%s'\n"),
opts->new_orphan_branch);
fprintf(stderr, _("Can not do reflog for '%s': %s\n"),
opts->new_orphan_branch, err.buf);
strbuf_release(&err);
return;
}
strbuf_release(&err);
}
}
else

View File

@ -13,6 +13,8 @@ static const char reflog_expire_usage[] =
"git reflog expire [--expire=<time>] [--expire-unreachable=<time>] [--rewrite] [--updateref] [--stale-fix] [--dry-run | -n] [--verbose] [--all] <refs>...";
static const char reflog_delete_usage[] =
"git reflog delete [--rewrite] [--updateref] [--dry-run | -n] [--verbose] <refs>...";
static const char reflog_exists_usage[] =
"git reflog exists <ref>";
static unsigned long default_reflog_expire;
static unsigned long default_reflog_expire_unreachable;
@ -699,12 +701,38 @@ static int cmd_reflog_delete(int argc, const char **argv, const char *prefix)
return status;
}
static int cmd_reflog_exists(int argc, const char **argv, const char *prefix)
{
int i, start = 0;
for (i = 1; i < argc; i++) {
const char *arg = argv[i];
if (!strcmp(arg, "--")) {
i++;
break;
}
else if (arg[0] == '-')
usage(reflog_exists_usage);
else
break;
}
start = i;
if (argc - start != 1)
usage(reflog_exists_usage);
if (check_refname_format(argv[start], REFNAME_ALLOW_ONELEVEL))
die("invalid ref format: %s", argv[start]);
return !reflog_exists(argv[start]);
}
/*
* main "reflog"
*/
static const char reflog_usage[] =
"git reflog [ show | expire | delete ]";
"git reflog [ show | expire | delete | exists ]";
int cmd_reflog(int argc, const char **argv, const char *prefix)
{
@ -724,5 +752,8 @@ int cmd_reflog(int argc, const char **argv, const char *prefix)
if (!strcmp(argv[1], "delete"))
return cmd_reflog_delete(argc - 1, argv + 1, prefix);
if (!strcmp(argv[1], "exists"))
return cmd_reflog_exists(argc - 1, argv + 1, prefix);
return cmd_log_reflog(argc, argv, prefix);
}

View File

@ -579,6 +579,7 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
struct create_tag_options opt;
char *cleanup_arg = NULL;
int annotate = 0, force = 0, lines = -1;
int create_reflog = 0;
int cmdmode = 0;
const char *msgfile = NULL, *keyid = NULL;
struct msg_arg msg = { 0, STRBUF_INIT };
@ -605,6 +606,7 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
OPT_STRING('u', "local-user", &keyid, N_("key-id"),
N_("use another key to sign the tag")),
OPT__FORCE(&force, N_("replace the tag if exists")),
OPT_BOOL(0, "create-reflog", &create_reflog, N_("create_reflog")),
OPT_GROUP(N_("Tag listing options")),
OPT_COLUMN(0, "column", &colopts, N_("show tag list in columns")),
@ -733,7 +735,8 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
transaction = ref_transaction_begin(&err);
if (!transaction ||
ref_transaction_update(transaction, ref.buf, object, prev,
0, NULL, &err) ||
create_reflog ? REF_FORCE_CREATE_REFLOG : 0,
NULL, &err) ||
ref_transaction_commit(transaction, &err))
die("%s", err.buf);
ref_transaction_free(transaction);

View File

@ -14,6 +14,7 @@ static const char * const git_update_ref_usage[] = {
static char line_termination = '\n';
static int update_flags;
static unsigned create_reflog_flag;
static const char *msg;
/*
@ -200,7 +201,8 @@ static const char *parse_cmd_update(struct ref_transaction *transaction,
if (ref_transaction_update(transaction, refname,
new_sha1, have_old ? old_sha1 : NULL,
update_flags, msg, &err))
update_flags | create_reflog_flag,
msg, &err))
die("%s", err.buf);
update_flags = 0;
@ -231,7 +233,8 @@ static const char *parse_cmd_create(struct ref_transaction *transaction,
die("create %s: extra input: %s", refname, next);
if (ref_transaction_create(transaction, refname, new_sha1,
update_flags, msg, &err))
update_flags | create_reflog_flag,
msg, &err))
die("%s", err.buf);
update_flags = 0;
@ -354,6 +357,7 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix)
unsigned char sha1[20], oldsha1[20];
int delete = 0, no_deref = 0, read_stdin = 0, end_null = 0;
unsigned int flags = 0;
int create_reflog = 0;
struct option options[] = {
OPT_STRING( 'm', NULL, &msg, N_("reason"), N_("reason of the update")),
OPT_BOOL('d', NULL, &delete, N_("delete the reference")),
@ -361,6 +365,7 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix)
N_("update <refname> not the one it points to")),
OPT_BOOL('z', NULL, &end_null, N_("stdin has NUL-terminated arguments")),
OPT_BOOL( 0 , "stdin", &read_stdin, N_("read updates from stdin")),
OPT_BOOL( 0 , "create-reflog", &create_reflog, N_("create_reflog")),
OPT_END(),
};
@ -370,6 +375,8 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix)
if (msg && !*msg)
die("Refusing to perform update with empty message.");
create_reflog_flag = create_reflog ? REF_FORCE_CREATE_REFLOG : 0;
if (read_stdin) {
struct strbuf err = STRBUF_INIT;
struct ref_transaction *transaction;
@ -431,5 +438,6 @@ int cmd_update_ref(int argc, const char **argv, const char *prefix)
flags);
else
return update_ref(msg, refname, sha1, oldval ? oldsha1 : NULL,
flags, UPDATE_REFS_DIE_ON_ERR);
flags | create_reflog_flag,
UPDATE_REFS_DIE_ON_ERR);
}

View File

@ -183,9 +183,7 @@ store_stash () {
stash_msg="Created via \"git stash store\"."
fi
# Make sure the reflog for stash is kept.
: >>"$(git rev-parse --git-path logs/$ref_stash)"
git update-ref -m "$stash_msg" $ref_stash $w_commit
git update-ref --create-reflog -m "$stash_msg" $ref_stash $w_commit
ret=$?
test $ret != 0 && test -z $quiet &&
die "$(eval_gettext "Cannot update \$ref_stash with \$w_commit")"
@ -262,7 +260,7 @@ save_stash () {
say "$(gettext "No local changes to save")"
exit 0
fi
test -f "$(git rev-parse --git-path logs/$ref_stash)" ||
git reflog exists $ref_stash ||
clear_stash || die "$(gettext "Cannot initialize stash")"
create_stash "$stash_msg" $untracked

169
refs.c
View File

@ -62,6 +62,11 @@ static unsigned char refname_disposition[256] = {
*/
#define REF_NEEDS_COMMIT 0x20
/*
* 0x40 is REF_FORCE_CREATE_REFLOG, so skip it if you're adding a
* value to ref_update::flags
*/
/*
* Try to read one refname component from the front of refname.
* Return the length of the component found, or -1 if the component is
@ -2975,9 +2980,11 @@ static int rename_ref_available(const char *oldname, const char *newname)
return ret;
}
static int write_ref_to_lockfile(struct ref_lock *lock, const unsigned char *sha1);
static int write_ref_to_lockfile(struct ref_lock *lock,
const unsigned char *sha1, struct strbuf *err);
static int commit_ref_update(struct ref_lock *lock,
const unsigned char *sha1, const char *logmsg);
const unsigned char *sha1, const char *logmsg,
int flags, struct strbuf *err);
int rename_ref(const char *oldrefname, const char *newrefname, const char *logmsg)
{
@ -3038,9 +3045,10 @@ int rename_ref(const char *oldrefname, const char *newrefname, const char *logms
}
hashcpy(lock->old_oid.hash, orig_sha1);
if (write_ref_to_lockfile(lock, orig_sha1) ||
commit_ref_update(lock, orig_sha1, logmsg)) {
error("unable to write current sha1 into %s", newrefname);
if (write_ref_to_lockfile(lock, orig_sha1, &err) ||
commit_ref_update(lock, orig_sha1, logmsg, 0, &err)) {
error("unable to write current sha1 into %s: %s", newrefname, err.buf);
strbuf_release(&err);
goto rollback;
}
@ -3056,9 +3064,11 @@ int rename_ref(const char *oldrefname, const char *newrefname, const char *logms
flag = log_all_ref_updates;
log_all_ref_updates = 0;
if (write_ref_to_lockfile(lock, orig_sha1) ||
commit_ref_update(lock, orig_sha1, NULL))
error("unable to write current sha1 into %s", oldrefname);
if (write_ref_to_lockfile(lock, orig_sha1, &err) ||
commit_ref_update(lock, orig_sha1, NULL, 0, &err)) {
error("unable to write current sha1 into %s: %s", oldrefname, err.buf);
strbuf_release(&err);
}
log_all_ref_updates = flag;
rollbacklog:
@ -3113,8 +3123,23 @@ static int copy_msg(char *buf, const char *msg)
return cp - buf;
}
/* This function must set a meaningful errno on failure */
int log_ref_setup(const char *refname, struct strbuf *sb_logfile)
static int should_autocreate_reflog(const char *refname)
{
if (!log_all_ref_updates)
return 0;
return starts_with(refname, "refs/heads/") ||
starts_with(refname, "refs/remotes/") ||
starts_with(refname, "refs/notes/") ||
!strcmp(refname, "HEAD");
}
/*
* Create a reflog for a ref. If force_create = 0, the reflog will
* only be created for certain refs (those for which
* should_autocreate_reflog returns non-zero. Otherwise, create it
* regardless of the ref name. Fill in *err and return -1 on failure.
*/
static int log_ref_setup(const char *refname, struct strbuf *sb_logfile, struct strbuf *err, int force_create)
{
int logfd, oflags = O_APPEND | O_WRONLY;
char *logfile;
@ -3123,15 +3148,10 @@ int log_ref_setup(const char *refname, struct strbuf *sb_logfile)
logfile = sb_logfile->buf;
/* make sure the rest of the function can't change "logfile" */
sb_logfile = NULL;
if (log_all_ref_updates &&
(starts_with(refname, "refs/heads/") ||
starts_with(refname, "refs/remotes/") ||
starts_with(refname, "refs/notes/") ||
!strcmp(refname, "HEAD"))) {
if (force_create || should_autocreate_reflog(refname)) {
if (safe_create_leading_directories(logfile) < 0) {
int save_errno = errno;
error("unable to create directory for %s", logfile);
errno = save_errno;
strbuf_addf(err, "unable to create directory for %s: "
"%s", logfile, strerror(errno));
return -1;
}
oflags |= O_CREAT;
@ -3144,20 +3164,16 @@ int log_ref_setup(const char *refname, struct strbuf *sb_logfile)
if (errno == EISDIR) {
if (remove_empty_directories(logfile)) {
int save_errno = errno;
error("There are still logs under '%s'",
logfile);
errno = save_errno;
strbuf_addf(err, "There are still logs under "
"'%s'", logfile);
return -1;
}
logfd = open(logfile, oflags, 0666);
}
if (logfd < 0) {
int save_errno = errno;
error("Unable to append to %s: %s", logfile,
strerror(errno));
errno = save_errno;
strbuf_addf(err, "unable to append to %s: %s",
logfile, strerror(errno));
return -1;
}
}
@ -3167,6 +3183,17 @@ int log_ref_setup(const char *refname, struct strbuf *sb_logfile)
return 0;
}
int safe_create_reflog(const char *refname, int force_create, struct strbuf *err)
{
int ret;
struct strbuf sb = STRBUF_INIT;
ret = log_ref_setup(refname, &sb, err, force_create);
strbuf_release(&sb);
return ret;
}
static int log_ref_write_fd(int fd, const unsigned char *old_sha1,
const unsigned char *new_sha1,
const char *committer, const char *msg)
@ -3195,7 +3222,8 @@ static int log_ref_write_fd(int fd, const unsigned char *old_sha1,
static int log_ref_write_1(const char *refname, const unsigned char *old_sha1,
const unsigned char *new_sha1, const char *msg,
struct strbuf *sb_log_file)
struct strbuf *sb_log_file, int flags,
struct strbuf *err)
{
int logfd, result, oflags = O_APPEND | O_WRONLY;
char *log_file;
@ -3203,7 +3231,8 @@ static int log_ref_write_1(const char *refname, const unsigned char *old_sha1,
if (log_all_ref_updates < 0)
log_all_ref_updates = !is_bare_repository();
result = log_ref_setup(refname, sb_log_file);
result = log_ref_setup(refname, sb_log_file, err, flags & REF_FORCE_CREATE_REFLOG);
if (result)
return result;
log_file = sb_log_file->buf;
@ -3216,26 +3245,26 @@ static int log_ref_write_1(const char *refname, const unsigned char *old_sha1,
result = log_ref_write_fd(logfd, old_sha1, new_sha1,
git_committer_info(0), msg);
if (result) {
int save_errno = errno;
strbuf_addf(err, "unable to append to %s: %s", log_file,
strerror(errno));
close(logfd);
error("Unable to append to %s", log_file);
errno = save_errno;
return -1;
}
if (close(logfd)) {
int save_errno = errno;
error("Unable to append to %s", log_file);
errno = save_errno;
strbuf_addf(err, "unable to append to %s: %s", log_file,
strerror(errno));
return -1;
}
return 0;
}
static int log_ref_write(const char *refname, const unsigned char *old_sha1,
const unsigned char *new_sha1, const char *msg)
const unsigned char *new_sha1, const char *msg,
int flags, struct strbuf *err)
{
struct strbuf sb = STRBUF_INIT;
int ret = log_ref_write_1(refname, old_sha1, new_sha1, msg, &sb);
int ret = log_ref_write_1(refname, old_sha1, new_sha1, msg, &sb, flags,
err);
strbuf_release(&sb);
return ret;
}
@ -3247,36 +3276,36 @@ int is_branch(const char *refname)
/*
* Write sha1 into the open lockfile, then close the lockfile. On
* errors, rollback the lockfile and set errno to reflect the problem.
* errors, rollback the lockfile, fill in *err and
* return -1.
*/
static int write_ref_to_lockfile(struct ref_lock *lock,
const unsigned char *sha1)
const unsigned char *sha1, struct strbuf *err)
{
static char term = '\n';
struct object *o;
o = parse_object(sha1);
if (!o) {
error("Trying to write ref %s with nonexistent object %s",
lock->ref_name, sha1_to_hex(sha1));
strbuf_addf(err,
"Trying to write ref %s with nonexistent object %s",
lock->ref_name, sha1_to_hex(sha1));
unlock_ref(lock);
errno = EINVAL;
return -1;
}
if (o->type != OBJ_COMMIT && is_branch(lock->ref_name)) {
error("Trying to write non-commit object %s to branch %s",
sha1_to_hex(sha1), lock->ref_name);
strbuf_addf(err,
"Trying to write non-commit object %s to branch %s",
sha1_to_hex(sha1), lock->ref_name);
unlock_ref(lock);
errno = EINVAL;
return -1;
}
if (write_in_full(lock->lk->fd, sha1_to_hex(sha1), 40) != 40 ||
write_in_full(lock->lk->fd, &term, 1) != 1 ||
close_ref(lock) < 0) {
int save_errno = errno;
error("Couldn't write %s", lock->lk->filename.buf);
strbuf_addf(err,
"Couldn't write %s", lock->lk->filename.buf);
unlock_ref(lock);
errno = save_errno;
return -1;
}
return 0;
@ -3288,12 +3317,17 @@ static int write_ref_to_lockfile(struct ref_lock *lock,
* necessary, using the specified lockmsg (which can be NULL).
*/
static int commit_ref_update(struct ref_lock *lock,
const unsigned char *sha1, const char *logmsg)
const unsigned char *sha1, const char *logmsg,
int flags, struct strbuf *err)
{
clear_loose_ref_cache(&ref_cache);
if (log_ref_write(lock->ref_name, lock->old_oid.hash, sha1, logmsg) < 0 ||
if (log_ref_write(lock->ref_name, lock->old_oid.hash, sha1, logmsg, flags, err) < 0 ||
(strcmp(lock->ref_name, lock->orig_ref_name) &&
log_ref_write(lock->orig_ref_name, lock->old_oid.hash, sha1, logmsg) < 0)) {
log_ref_write(lock->orig_ref_name, lock->old_oid.hash, sha1, logmsg, flags, err) < 0)) {
char *old_msg = strbuf_detach(err, NULL);
strbuf_addf(err, "Cannot update the ref '%s': %s",
lock->ref_name, old_msg);
free(old_msg);
unlock_ref(lock);
return -1;
}
@ -3316,14 +3350,21 @@ static int commit_ref_update(struct ref_lock *lock,
head_ref = resolve_ref_unsafe("HEAD", RESOLVE_REF_READING,
head_sha1, &head_flag);
if (head_ref && (head_flag & REF_ISSYMREF) &&
!strcmp(head_ref, lock->ref_name))
log_ref_write("HEAD", lock->old_oid.hash, sha1, logmsg);
!strcmp(head_ref, lock->ref_name)) {
struct strbuf log_err = STRBUF_INIT;
if (log_ref_write("HEAD", lock->old_oid.hash, sha1,
logmsg, 0, &log_err)) {
error("%s", log_err.buf);
strbuf_release(&log_err);
}
}
}
if (commit_ref(lock)) {
error("Couldn't set %s", lock->ref_name);
unlock_ref(lock);
return -1;
}
unlock_ref(lock);
return 0;
}
@ -3336,6 +3377,7 @@ int create_symref(const char *ref_target, const char *refs_heads_master,
int fd, len, written;
char *git_HEAD = git_pathdup("%s", ref_target);
unsigned char old_sha1[20], new_sha1[20];
struct strbuf err = STRBUF_INIT;
if (logmsg && read_ref(ref_target, old_sha1))
hashclr(old_sha1);
@ -3384,8 +3426,11 @@ int create_symref(const char *ref_target, const char *refs_heads_master,
#ifndef NO_SYMLINK_HEAD
done:
#endif
if (logmsg && !read_ref(refs_heads_master, new_sha1))
log_ref_write(ref_target, old_sha1, new_sha1, logmsg);
if (logmsg && !read_ref(refs_heads_master, new_sha1) &&
log_ref_write(ref_target, old_sha1, new_sha1, logmsg, 0, &err)) {
error("%s", err.buf);
strbuf_release(&err);
}
free(git_HEAD);
return 0;
@ -4021,14 +4066,19 @@ int ref_transaction_commit(struct ref_transaction *transaction,
* value, so we don't need to write it.
*/
} else if (write_ref_to_lockfile(update->lock,
update->new_sha1)) {
update->new_sha1,
err)) {
char *write_err = strbuf_detach(err, NULL);
/*
* The lock was freed upon failure of
* write_ref_to_lockfile():
*/
update->lock = NULL;
strbuf_addf(err, "cannot update the ref '%s'.",
update->refname);
strbuf_addf(err,
"cannot update the ref '%s': %s",
update->refname, write_err);
free(write_err);
ret = TRANSACTION_GENERIC_ERROR;
goto cleanup;
} else {
@ -4054,11 +4104,10 @@ int ref_transaction_commit(struct ref_transaction *transaction,
if (update->flags & REF_NEEDS_COMMIT) {
if (commit_ref_update(update->lock,
update->new_sha1, update->msg)) {
update->new_sha1, update->msg,
update->flags, err)) {
/* freed by commit_ref_update(): */
update->lock = NULL;
strbuf_addf(err, "Cannot update the ref '%s'.",
update->refname);
ret = TRANSACTION_GENERIC_ERROR;
goto cleanup;
} else {

5
refs.h
View File

@ -224,11 +224,12 @@ int pack_refs(unsigned int flags);
* Other flags are reserved for internal use.
*/
#define REF_NODEREF 0x01
#define REF_FORCE_CREATE_REFLOG 0x40
/*
* Setup reflog before using. Set errno to something meaningful on failure.
* Setup reflog before using. Fill in err and return -1 on failure.
*/
int log_ref_setup(const char *refname, struct strbuf *logfile);
int safe_create_reflog(const char *refname, int force_create, struct strbuf *err);
/** Reads log for the value of ref during at_time. **/
extern int read_ref_at(const char *refname, unsigned int flags,

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@ -23,6 +23,7 @@ test_expect_success setup '
m=refs/heads/master
n_dir=refs/heads/gu
n=$n_dir/fixes
outside=foo
test_expect_success \
"create $m" \
@ -74,6 +75,24 @@ test_expect_success "delete $m (by HEAD)" '
'
rm -f .git/$m
test_expect_success 'update-ref does not create reflogs by default' '
test_when_finished "git update-ref -d $outside" &&
git update-ref $outside $A &&
git rev-parse $A >expect &&
git rev-parse $outside >actual &&
test_cmp expect actual &&
test_must_fail git reflog exists $outside
'
test_expect_success 'update-ref creates reflogs with --create-reflog' '
test_when_finished "git update-ref -d $outside" &&
git update-ref --create-reflog $outside $A &&
git rev-parse $A >expect &&
git rev-parse $outside >actual &&
test_cmp expect actual &&
git reflog exists $outside
'
test_expect_success \
"create $m (by HEAD)" \
"git update-ref HEAD $A &&
@ -472,6 +491,25 @@ test_expect_success 'stdin create ref works' '
test_cmp expect actual
'
test_expect_success 'stdin does not create reflogs by default' '
test_when_finished "git update-ref -d $outside" &&
echo "create $outside $m" >stdin &&
git update-ref --stdin <stdin &&
git rev-parse $m >expect &&
git rev-parse $outside >actual &&
test_cmp expect actual &&
test_must_fail git reflog exists $outside
'
test_expect_success 'stdin creates reflogs with --create-reflog' '
echo "create $outside $m" >stdin &&
git update-ref --create-reflog --stdin <stdin &&
git rev-parse $m >expect &&
git rev-parse $outside >actual &&
test_cmp expect actual &&
git reflog exists $outside
'
test_expect_success 'stdin succeeds with quoted argument' '
git update-ref -d $a &&
echo "create $a \"$m\"" >stdin &&

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@ -166,4 +166,9 @@ test_expect_success 'git log -g -p shows diffs vs. parents' '
test_cmp expect actual
'
test_expect_success 'reflog exists works' '
git reflog exists refs/heads/master &&
! git reflog exists refs/heads/nonexistent
'
test_done

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@ -51,7 +51,19 @@ test_expect_success 'creating a tag using default HEAD should succeed' '
echo foo >foo &&
git add foo &&
git commit -m Foo &&
git tag mytag
git tag mytag &&
test_must_fail git reflog exists refs/tags/mytag
'
test_expect_success 'creating a tag with --create-reflog should create reflog' '
test_when_finished "git tag -d tag_with_reflog" &&
git tag --create-reflog tag_with_reflog &&
git reflog exists refs/tags/tag_with_reflog
'
test_expect_success '--create-reflog does not create reflog on failure' '
test_must_fail git tag --create-reflog mytag &&
test_must_fail git reflog exists refs/tags/mytag
'
test_expect_success 'listing all tags if one exists should succeed' '