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https://github.com/git/git.git
synced 2024-09-22 05:31:42 +02:00
Merge branch 'nd/clone-detached'
* nd/clone-detached: clone: fix up delay cloning conditions push: do not let configured foreign-vcs permanently clobbered clone: print advice on checking out detached HEAD clone: allow --branch to take a tag clone: refuse to clone if --branch points to bogus ref clone: --branch=<branch> always means refs/heads/<branch> clone: delay cloning until after remote HEAD checking clone: factor out remote ref writing clone: factor out HEAD update code clone: factor out checkout code clone: write detached HEAD in bare repositories t5601: add missing && cascade
This commit is contained in:
Junio C Hamano
commit
5ce2b97d2c
@ -147,8 +147,9 @@ objects from the source repository into a pack in the cloned repository.
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-b <name>::
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Instead of pointing the newly created HEAD to the branch pointed
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to by the cloned repository's HEAD, point to `<name>` branch
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instead. In a non-bare repository, this is the branch that will
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be checked out.
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instead. `--branch` can also take tags and treat them like
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detached HEAD. In a non-bare repository, this is the branch
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that will be checked out.
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--upload-pack <upload-pack>::
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-u <upload-pack>::
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14
advice.c
14
advice.c
@ -73,3 +73,17 @@ void NORETURN die_resolve_conflict(const char *me)
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error_resolve_conflict(me);
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die("Exiting because of an unresolved conflict.");
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}
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void detach_advice(const char *new_name)
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{
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const char fmt[] =
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"Note: checking out '%s'.\n\n"
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"You are in 'detached HEAD' state. You can look around, make experimental\n"
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"changes and commit them, and you can discard any commits you make in this\n"
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"state without impacting any branches by performing another checkout.\n\n"
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"If you want to create a new branch to retain commits you create, you may\n"
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"do so (now or later) by using -b with the checkout command again. Example:\n\n"
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" git checkout -b new_branch_name\n\n";
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fprintf(stderr, fmt, new_name);
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}
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1
advice.h
1
advice.h
@ -14,5 +14,6 @@ int git_default_advice_config(const char *var, const char *value);
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void advise(const char *advice, ...);
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int error_resolve_conflict(const char *me);
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extern void NORETURN die_resolve_conflict(const char *me);
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void detach_advice(const char *new_name);
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#endif /* ADVICE_H */
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@ -514,20 +514,6 @@ static void report_tracking(struct branch_info *new)
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strbuf_release(&sb);
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}
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static void detach_advice(const char *old_path, const char *new_name)
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{
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const char fmt[] =
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"Note: checking out '%s'.\n\n"
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"You are in 'detached HEAD' state. You can look around, make experimental\n"
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"changes and commit them, and you can discard any commits you make in this\n"
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"state without impacting any branches by performing another checkout.\n\n"
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"If you want to create a new branch to retain commits you create, you may\n"
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"do so (now or later) by using -b with the checkout command again. Example:\n\n"
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" git checkout -b new_branch_name\n\n";
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fprintf(stderr, fmt, new_name);
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}
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static void update_refs_for_switch(struct checkout_opts *opts,
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struct branch_info *old,
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struct branch_info *new)
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@ -575,7 +561,7 @@ static void update_refs_for_switch(struct checkout_opts *opts,
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REF_NODEREF, DIE_ON_ERR);
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if (!opts->quiet) {
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if (old->path && advice_detached_head)
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detach_advice(old->path, new->name);
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detach_advice(new->name);
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describe_detached_head(_("HEAD is now at"), new->commit);
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}
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} else if (new->path) { /* Switch branches. */
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305
builtin/clone.c
305
builtin/clone.c
@ -48,7 +48,6 @@ static int option_verbosity;
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static int option_progress;
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static struct string_list option_config;
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static struct string_list option_reference;
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static const char *src_ref_prefix = "refs/heads/";
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static int opt_parse_reference(const struct option *opt, const char *arg, int unset)
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{
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@ -364,13 +363,8 @@ static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest,
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closedir(dir);
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}
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static const struct ref *clone_local(const char *src_repo,
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const char *dest_repo)
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static void clone_local(const char *src_repo, const char *dest_repo)
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{
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const struct ref *ret;
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struct remote *remote;
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struct transport *transport;
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if (option_shared) {
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struct strbuf alt = STRBUF_INIT;
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strbuf_addf(&alt, "%s/objects", src_repo);
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@ -386,13 +380,8 @@ static const struct ref *clone_local(const char *src_repo,
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strbuf_release(&dest);
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}
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remote = remote_get(src_repo);
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transport = transport_get(remote, src_repo);
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ret = transport_get_remote_refs(transport);
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transport_disconnect(transport);
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if (0 <= option_verbosity)
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printf(_("done.\n"));
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return ret;
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}
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static const char *junk_work_tree;
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@ -423,6 +412,26 @@ static void remove_junk_on_signal(int signo)
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raise(signo);
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}
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static struct ref *find_remote_branch(const struct ref *refs, const char *branch)
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{
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struct ref *ref;
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struct strbuf head = STRBUF_INIT;
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strbuf_addstr(&head, "refs/heads/");
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strbuf_addstr(&head, branch);
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ref = find_ref_by_name(refs, head.buf);
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strbuf_release(&head);
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if (ref)
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return ref;
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strbuf_addstr(&head, "refs/tags/");
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strbuf_addstr(&head, branch);
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ref = find_ref_by_name(refs, head.buf);
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strbuf_release(&head);
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return ref;
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}
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static struct ref *wanted_peer_refs(const struct ref *refs,
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struct refspec *refspec)
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{
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@ -435,19 +444,18 @@ static struct ref *wanted_peer_refs(const struct ref *refs,
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if (!option_branch)
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remote_head = guess_remote_head(head, refs, 0);
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else {
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struct strbuf sb = STRBUF_INIT;
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strbuf_addstr(&sb, src_ref_prefix);
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strbuf_addstr(&sb, option_branch);
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remote_head = find_ref_by_name(refs, sb.buf);
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strbuf_release(&sb);
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}
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else
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remote_head = find_remote_branch(refs, option_branch);
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if (!remote_head && option_branch)
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warning(_("Could not find remote branch %s to clone."),
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option_branch);
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else
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else {
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get_fetch_map(remote_head, refspec, &tail, 0);
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/* if --branch=tag, pull the requested tag explicitly */
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get_fetch_map(remote_head, tag_refspec, &tail, 0);
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}
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} else
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get_fetch_map(refs, refspec, &tail, 0);
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@ -485,6 +493,116 @@ static void write_followtags(const struct ref *refs, const char *msg)
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}
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}
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static void update_remote_refs(const struct ref *refs,
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const struct ref *mapped_refs,
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const struct ref *remote_head_points_at,
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const char *branch_top,
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const char *msg)
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{
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if (refs) {
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clear_extra_refs();
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write_remote_refs(mapped_refs);
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if (option_single_branch)
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write_followtags(refs, msg);
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}
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if (remote_head_points_at && !option_bare) {
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struct strbuf head_ref = STRBUF_INIT;
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strbuf_addstr(&head_ref, branch_top);
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strbuf_addstr(&head_ref, "HEAD");
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create_symref(head_ref.buf,
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remote_head_points_at->peer_ref->name,
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msg);
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}
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}
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static void update_head(const struct ref *our, const struct ref *remote,
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const char *msg)
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{
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if (our && !prefixcmp(our->name, "refs/heads/")) {
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/* Local default branch link */
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create_symref("HEAD", our->name, NULL);
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if (!option_bare) {
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const char *head = skip_prefix(our->name, "refs/heads/");
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update_ref(msg, "HEAD", our->old_sha1, NULL, 0, DIE_ON_ERR);
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install_branch_config(0, head, option_origin, our->name);
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}
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} else if (our) {
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struct commit *c = lookup_commit_reference(our->old_sha1);
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/* --branch specifies a non-branch (i.e. tags), detach HEAD */
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update_ref(msg, "HEAD", c->object.sha1,
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NULL, REF_NODEREF, DIE_ON_ERR);
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} else if (remote) {
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/*
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* We know remote HEAD points to a non-branch, or
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* HEAD points to a branch but we don't know which one.
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* Detach HEAD in all these cases.
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*/
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update_ref(msg, "HEAD", remote->old_sha1,
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NULL, REF_NODEREF, DIE_ON_ERR);
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}
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}
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static int checkout(void)
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{
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unsigned char sha1[20];
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char *head;
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struct lock_file *lock_file;
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struct unpack_trees_options opts;
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struct tree *tree;
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struct tree_desc t;
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int err = 0, fd;
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if (option_no_checkout)
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return 0;
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head = resolve_refdup("HEAD", sha1, 1, NULL);
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if (!head) {
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warning(_("remote HEAD refers to nonexistent ref, "
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"unable to checkout.\n"));
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return 0;
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}
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if (!strcmp(head, "HEAD")) {
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if (advice_detached_head)
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detach_advice(sha1_to_hex(sha1));
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} else {
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if (prefixcmp(head, "refs/heads/"))
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die(_("HEAD not found below refs/heads!"));
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}
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free(head);
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/* We need to be in the new work tree for the checkout */
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setup_work_tree();
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lock_file = xcalloc(1, sizeof(struct lock_file));
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fd = hold_locked_index(lock_file, 1);
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memset(&opts, 0, sizeof opts);
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opts.update = 1;
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opts.merge = 1;
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opts.fn = oneway_merge;
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opts.verbose_update = (option_verbosity > 0);
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opts.src_index = &the_index;
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opts.dst_index = &the_index;
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tree = parse_tree_indirect(sha1);
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parse_tree(tree);
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init_tree_desc(&t, tree->buffer, tree->size);
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unpack_trees(1, &t, &opts);
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if (write_cache(fd, active_cache, active_nr) ||
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commit_locked_index(lock_file))
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die(_("unable to write new index file"));
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err |= run_hook(NULL, "post-checkout", sha1_to_hex(null_sha1),
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sha1_to_hex(sha1), "1", NULL);
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if (!err && option_recursive)
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err = run_command_v_opt(argv_submodule, RUN_GIT_CMD);
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return err;
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}
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static int write_one_config(const char *key, const char *value, void *data)
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{
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return git_config_set_multivar(key, value ? value : "true", "^$", 0);
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@ -512,10 +630,13 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
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const struct ref *remote_head_points_at;
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const struct ref *our_head_points_at;
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struct ref *mapped_refs;
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const struct ref *ref;
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struct strbuf key = STRBUF_INIT, value = STRBUF_INIT;
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struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
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struct transport *transport = NULL;
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int err = 0;
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const char *src_ref_prefix = "refs/heads/";
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struct remote *remote;
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int err = 0, complete_refs_before_fetch = 1;
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struct refspec *refspec;
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const char *fetch_pattern;
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@ -669,13 +790,10 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
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strbuf_reset(&value);
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if (is_local) {
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refs = clone_local(path, git_dir);
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mapped_refs = wanted_peer_refs(refs, refspec);
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} else {
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struct remote *remote = remote_get(option_origin);
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transport = transport_get(remote, remote->url[0]);
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remote = remote_get(option_origin);
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transport = transport_get(remote, remote->url[0]);
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if (!is_local) {
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if (!transport->get_refs_list || !transport->fetch)
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die(_("Don't know how to clone %s"), transport->url);
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@ -692,39 +810,42 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
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if (option_upload_pack)
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transport_set_option(transport, TRANS_OPT_UPLOADPACK,
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option_upload_pack);
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refs = transport_get_remote_refs(transport);
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if (refs) {
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mapped_refs = wanted_peer_refs(refs, refspec);
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transport_fetch_refs(transport, mapped_refs);
|
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}
|
||||
}
|
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|
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refs = transport_get_remote_refs(transport);
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mapped_refs = refs ? wanted_peer_refs(refs, refspec) : NULL;
|
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|
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/*
|
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* transport_get_remote_refs() may return refs with null sha-1
|
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* in mapped_refs (see struct transport->get_refs_list
|
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* comment). In that case we need fetch it early because
|
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* remote_head code below relies on it.
|
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*
|
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* for normal clones, transport_get_remote_refs() should
|
||||
* return reliable ref set, we can delay cloning until after
|
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* remote HEAD check.
|
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*/
|
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for (ref = refs; ref; ref = ref->next)
|
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if (is_null_sha1(ref->old_sha1)) {
|
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complete_refs_before_fetch = 0;
|
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break;
|
||||
}
|
||||
|
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if (!is_local && !complete_refs_before_fetch && refs)
|
||||
transport_fetch_refs(transport, mapped_refs);
|
||||
|
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if (refs) {
|
||||
clear_extra_refs();
|
||||
|
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write_remote_refs(mapped_refs);
|
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if (option_single_branch)
|
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write_followtags(refs, reflog_msg.buf);
|
||||
|
||||
remote_head = find_ref_by_name(refs, "HEAD");
|
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remote_head_points_at =
|
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guess_remote_head(remote_head, mapped_refs, 0);
|
||||
|
||||
if (option_branch) {
|
||||
struct strbuf head = STRBUF_INIT;
|
||||
strbuf_addstr(&head, src_ref_prefix);
|
||||
strbuf_addstr(&head, option_branch);
|
||||
our_head_points_at =
|
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find_ref_by_name(mapped_refs, head.buf);
|
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strbuf_release(&head);
|
||||
find_remote_branch(mapped_refs, option_branch);
|
||||
|
||||
if (!our_head_points_at) {
|
||||
warning(_("Remote branch %s not found in "
|
||||
"upstream %s, using HEAD instead"),
|
||||
option_branch, option_origin);
|
||||
our_head_points_at = remote_head_points_at;
|
||||
}
|
||||
if (!our_head_points_at)
|
||||
die(_("Remote branch %s not found in upstream %s"),
|
||||
option_branch, option_origin);
|
||||
}
|
||||
else
|
||||
our_head_points_at = remote_head_points_at;
|
||||
@ -740,84 +861,20 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
|
||||
"refs/heads/master");
|
||||
}
|
||||
|
||||
if (remote_head_points_at && !option_bare) {
|
||||
struct strbuf head_ref = STRBUF_INIT;
|
||||
strbuf_addstr(&head_ref, branch_top.buf);
|
||||
strbuf_addstr(&head_ref, "HEAD");
|
||||
create_symref(head_ref.buf,
|
||||
remote_head_points_at->peer_ref->name,
|
||||
reflog_msg.buf);
|
||||
}
|
||||
if (is_local)
|
||||
clone_local(path, git_dir);
|
||||
else if (refs && complete_refs_before_fetch)
|
||||
transport_fetch_refs(transport, mapped_refs);
|
||||
|
||||
if (our_head_points_at) {
|
||||
/* Local default branch link */
|
||||
create_symref("HEAD", our_head_points_at->name, NULL);
|
||||
if (!option_bare) {
|
||||
const char *head = skip_prefix(our_head_points_at->name,
|
||||
"refs/heads/");
|
||||
update_ref(reflog_msg.buf, "HEAD",
|
||||
our_head_points_at->old_sha1,
|
||||
NULL, 0, DIE_ON_ERR);
|
||||
install_branch_config(0, head, option_origin,
|
||||
our_head_points_at->name);
|
||||
}
|
||||
} else if (remote_head) {
|
||||
/* Source had detached HEAD pointing somewhere. */
|
||||
if (!option_bare) {
|
||||
update_ref(reflog_msg.buf, "HEAD",
|
||||
remote_head->old_sha1,
|
||||
NULL, REF_NODEREF, DIE_ON_ERR);
|
||||
our_head_points_at = remote_head;
|
||||
}
|
||||
} else {
|
||||
/* Nothing to checkout out */
|
||||
if (!option_no_checkout)
|
||||
warning(_("remote HEAD refers to nonexistent ref, "
|
||||
"unable to checkout.\n"));
|
||||
option_no_checkout = 1;
|
||||
}
|
||||
update_remote_refs(refs, mapped_refs, remote_head_points_at,
|
||||
branch_top.buf, reflog_msg.buf);
|
||||
|
||||
if (transport) {
|
||||
transport_unlock_pack(transport);
|
||||
transport_disconnect(transport);
|
||||
}
|
||||
update_head(our_head_points_at, remote_head, reflog_msg.buf);
|
||||
|
||||
if (!option_no_checkout) {
|
||||
struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
|
||||
struct unpack_trees_options opts;
|
||||
struct tree *tree;
|
||||
struct tree_desc t;
|
||||
int fd;
|
||||
transport_unlock_pack(transport);
|
||||
transport_disconnect(transport);
|
||||
|
||||
/* We need to be in the new work tree for the checkout */
|
||||
setup_work_tree();
|
||||
|
||||
fd = hold_locked_index(lock_file, 1);
|
||||
|
||||
memset(&opts, 0, sizeof opts);
|
||||
opts.update = 1;
|
||||
opts.merge = 1;
|
||||
opts.fn = oneway_merge;
|
||||
opts.verbose_update = (option_verbosity > 0);
|
||||
opts.src_index = &the_index;
|
||||
opts.dst_index = &the_index;
|
||||
|
||||
tree = parse_tree_indirect(our_head_points_at->old_sha1);
|
||||
parse_tree(tree);
|
||||
init_tree_desc(&t, tree->buffer, tree->size);
|
||||
unpack_trees(1, &t, &opts);
|
||||
|
||||
if (write_cache(fd, active_cache, active_nr) ||
|
||||
commit_locked_index(lock_file))
|
||||
die(_("unable to write new index file"));
|
||||
|
||||
err |= run_hook(NULL, "post-checkout", sha1_to_hex(null_sha1),
|
||||
sha1_to_hex(our_head_points_at->old_sha1), "1",
|
||||
NULL);
|
||||
|
||||
if (!err && option_recursive)
|
||||
err = run_command_v_opt(argv_submodule, RUN_GIT_CMD);
|
||||
}
|
||||
err = checkout();
|
||||
|
||||
strbuf_release(&reflog_msg);
|
||||
strbuf_release(&branch_top);
|
||||
|
||||
@ -282,13 +282,6 @@ test_expect_success 'clone shallow object count' '
|
||||
test_cmp count3.expected count3.actual
|
||||
'
|
||||
|
||||
test_expect_success 'clone shallow with nonexistent --branch' '
|
||||
git clone --depth 1 --branch Z "file://$(pwd)/." shallow4 &&
|
||||
GIT_DIR=shallow4/.git git rev-parse HEAD >actual &&
|
||||
git rev-parse HEAD >expected &&
|
||||
test_cmp expected actual
|
||||
'
|
||||
|
||||
test_expect_success 'clone shallow with detached HEAD' '
|
||||
git checkout HEAD^ &&
|
||||
git clone --depth 1 "file://$(pwd)/." shallow5 &&
|
||||
@ -318,4 +311,19 @@ EOF
|
||||
test_cmp count6.expected count6.actual
|
||||
'
|
||||
|
||||
test_expect_success 'shallow cloning single tag' '
|
||||
git clone --depth 1 --branch=TAGB1 "file://$(pwd)/." shallow7 &&
|
||||
cat >taglist.expected <<\EOF &&
|
||||
TAGB1
|
||||
TAGB2
|
||||
EOF
|
||||
GIT_DIR=shallow7/.git git tag -l >taglist.actual &&
|
||||
test_cmp taglist.expected taglist.actual &&
|
||||
|
||||
echo "in-pack: 7" > count7.expected &&
|
||||
GIT_DIR=shallow7/.git git count-objects -v |
|
||||
grep "^in-pack" > count7.actual &&
|
||||
test_cmp count7.expected count7.actual
|
||||
'
|
||||
|
||||
test_done
|
||||
|
||||
@ -9,10 +9,13 @@ test_expect_success setup '
|
||||
rm -fr .git &&
|
||||
test_create_repo src &&
|
||||
(
|
||||
cd src
|
||||
>file
|
||||
git add file
|
||||
git commit -m initial
|
||||
cd src &&
|
||||
>file &&
|
||||
git add file &&
|
||||
git commit -m initial &&
|
||||
echo 1 >file &&
|
||||
git add file &&
|
||||
git commit -m updated
|
||||
)
|
||||
|
||||
'
|
||||
@ -88,6 +91,26 @@ test_expect_success 'clone --mirror' '
|
||||
|
||||
'
|
||||
|
||||
test_expect_success 'clone --mirror with detached HEAD' '
|
||||
|
||||
( cd src && git checkout HEAD^ && git rev-parse HEAD >../expected ) &&
|
||||
git clone --mirror src mirror.detached &&
|
||||
( cd src && git checkout - ) &&
|
||||
GIT_DIR=mirror.detached git rev-parse HEAD >actual &&
|
||||
test_cmp expected actual
|
||||
|
||||
'
|
||||
|
||||
test_expect_success 'clone --bare with detached HEAD' '
|
||||
|
||||
( cd src && git checkout HEAD^ && git rev-parse HEAD >../expected ) &&
|
||||
git clone --bare src bare.detached &&
|
||||
( cd src && git checkout - ) &&
|
||||
GIT_DIR=bare.detached git rev-parse HEAD >actual &&
|
||||
test_cmp expected actual
|
||||
|
||||
'
|
||||
|
||||
test_expect_success 'clone --bare names the local repository <name>.git' '
|
||||
|
||||
git clone --bare src &&
|
||||
@ -248,4 +271,13 @@ test_expect_success 'clone from original with relative alternate' '
|
||||
grep /src/\\.git/objects target-10/objects/info/alternates
|
||||
'
|
||||
|
||||
test_expect_success 'clone checking out a tag' '
|
||||
git clone --branch=some-tag src dst.tag &&
|
||||
GIT_DIR=src/.git git rev-parse some-tag >expected &&
|
||||
test_cmp expected dst.tag/.git/HEAD &&
|
||||
GIT_DIR=dst.tag/.git git config remote.origin.fetch >fetch.actual &&
|
||||
echo "+refs/heads/*:refs/remotes/origin/*" >fetch.expected &&
|
||||
test_cmp fetch.expected fetch.actual
|
||||
'
|
||||
|
||||
test_done
|
||||
|
||||
@ -57,12 +57,8 @@ test_expect_success 'clone -b does not munge remotes/origin/HEAD' '
|
||||
)
|
||||
'
|
||||
|
||||
test_expect_success 'clone -b with bogus branch chooses HEAD' '
|
||||
git clone -b bogus parent clone-bogus &&
|
||||
(cd clone-bogus &&
|
||||
check_HEAD master &&
|
||||
check_file one
|
||||
)
|
||||
test_expect_success 'clone -b with bogus branch' '
|
||||
test_must_fail git clone -b bogus parent clone-bogus
|
||||
'
|
||||
|
||||
test_done
|
||||
|
||||
Loading…
Reference in New Issue
Block a user