root/builtin/remote.c

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DEFINITIONS

This source file includes following definitions.
  1. fetch_remote
  2. add_branch
  3. parse_mirror_opt
  4. add
  5. abbrev_ref
  6. config_read_branches
  7. read_branches
  8. get_ref_states
  9. get_push_ref_states
  10. get_push_ref_states_noquery
  11. get_head_names
  12. add_known_remote
  13. add_branch_for_removal
  14. read_remote_branches
  15. migrate_file
  16. mv
  17. rm
  18. clear_push_info
  19. free_remote_ref_states
  20. append_ref_to_tracked_list
  21. get_remote_ref_states
  22. add_remote_to_show_info
  23. show_remote_info_item
  24. add_local_to_show_info
  25. show_local_info_item
  26. add_push_to_show_info
  27. cmp_string_with_push
  28. show_push_info_item
  29. get_one_entry
  30. show_all
  31. show
  32. set_head
  33. prune_remote
  34. prune
  35. get_remote_default
  36. update
  37. remove_all_fetch_refspecs
  38. add_branches
  39. set_remote_branches
  40. set_branches
  41. set_url
  42. cmd_remote

#include "builtin.h"
#include "parse-options.h"
#include "transport.h"
#include "remote.h"
#include "string-list.h"
#include "strbuf.h"
#include "run-command.h"
#include "refs.h"
#include "argv-array.h"

static const char * const builtin_remote_usage[] = {
        N_("git remote [-v | --verbose]"),
        N_("git remote add [-t <branch>] [-m <master>] [-f] [--tags | --no-tags] [--mirror=<fetch|push>] <name> <url>"),
        N_("git remote rename <old> <new>"),
        N_("git remote remove <name>"),
        N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
        N_("git remote [-v | --verbose] show [-n] <name>"),
        N_("git remote prune [-n | --dry-run] <name>"),
        N_("git remote [-v | --verbose] update [-p | --prune] [(<group> | <remote>)...]"),
        N_("git remote set-branches [--add] <name> <branch>..."),
        N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
        N_("git remote set-url --add <name> <newurl>"),
        N_("git remote set-url --delete <name> <url>"),
        NULL
};

static const char * const builtin_remote_add_usage[] = {
        N_("git remote add [<options>] <name> <url>"),
        NULL
};

static const char * const builtin_remote_rename_usage[] = {
        N_("git remote rename <old> <new>"),
        NULL
};

static const char * const builtin_remote_rm_usage[] = {
        N_("git remote remove <name>"),
        NULL
};

static const char * const builtin_remote_sethead_usage[] = {
        N_("git remote set-head <name> (-a | --auto | -d | --delete | <branch>)"),
        NULL
};

static const char * const builtin_remote_setbranches_usage[] = {
        N_("git remote set-branches <name> <branch>..."),
        N_("git remote set-branches --add <name> <branch>..."),
        NULL
};

static const char * const builtin_remote_show_usage[] = {
        N_("git remote show [<options>] <name>"),
        NULL
};

static const char * const builtin_remote_prune_usage[] = {
        N_("git remote prune [<options>] <name>"),
        NULL
};

static const char * const builtin_remote_update_usage[] = {
        N_("git remote update [<options>] [<group> | <remote>]..."),
        NULL
};

static const char * const builtin_remote_seturl_usage[] = {
        N_("git remote set-url [--push] <name> <newurl> [<oldurl>]"),
        N_("git remote set-url --add <name> <newurl>"),
        N_("git remote set-url --delete <name> <url>"),
        NULL
};

#define GET_REF_STATES (1<<0)
#define GET_HEAD_NAMES (1<<1)
#define GET_PUSH_REF_STATES (1<<2)

static int verbose;

static int fetch_remote(const char *name)
{
        const char *argv[] = { "fetch", name, NULL, NULL };
        if (verbose) {
                argv[1] = "-v";
                argv[2] = name;
        }
        printf_ln(_("Updating %s"), name);
        if (run_command_v_opt(argv, RUN_GIT_CMD))
                return error(_("Could not fetch %s"), name);
        return 0;
}

enum {
        TAGS_UNSET = 0,
        TAGS_DEFAULT = 1,
        TAGS_SET = 2
};

#define MIRROR_NONE 0
#define MIRROR_FETCH 1
#define MIRROR_PUSH 2
#define MIRROR_BOTH (MIRROR_FETCH|MIRROR_PUSH)

static int add_branch(const char *key, const char *branchname,
                const char *remotename, int mirror, struct strbuf *tmp)
{
        strbuf_reset(tmp);
        strbuf_addch(tmp, '+');
        if (mirror)
                strbuf_addf(tmp, "refs/%s:refs/%s",
                                branchname, branchname);
        else
                strbuf_addf(tmp, "refs/heads/%s:refs/remotes/%s/%s",
                                branchname, remotename, branchname);
        return git_config_set_multivar(key, tmp->buf, "^$", 0);
}

static const char mirror_advice[] =
N_("--mirror is dangerous and deprecated; please\n"
   "\t use --mirror=fetch or --mirror=push instead");

static int parse_mirror_opt(const struct option *opt, const char *arg, int not)
{
        unsigned *mirror = opt->value;
        if (not)
                *mirror = MIRROR_NONE;
        else if (!arg) {
                warning("%s", _(mirror_advice));
                *mirror = MIRROR_BOTH;
        }
        else if (!strcmp(arg, "fetch"))
                *mirror = MIRROR_FETCH;
        else if (!strcmp(arg, "push"))
                *mirror = MIRROR_PUSH;
        else
                return error(_("unknown mirror argument: %s"), arg);
        return 0;
}

static int add(int argc, const char **argv)
{
        int fetch = 0, fetch_tags = TAGS_DEFAULT;
        unsigned mirror = MIRROR_NONE;
        struct string_list track = STRING_LIST_INIT_NODUP;
        const char *master = NULL;
        struct remote *remote;
        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
        const char *name, *url;
        int i;

        struct option options[] = {
                OPT_BOOL('f', "fetch", &fetch, N_("fetch the remote branches")),
                OPT_SET_INT(0, "tags", &fetch_tags,
                            N_("import all tags and associated objects when fetching"),
                            TAGS_SET),
                OPT_SET_INT(0, NULL, &fetch_tags,
                            N_("or do not fetch any tag at all (--no-tags)"), TAGS_UNSET),
                OPT_STRING_LIST('t', "track", &track, N_("branch"),
                                N_("branch(es) to track")),
                OPT_STRING('m', "master", &master, N_("branch"), N_("master branch")),
                { OPTION_CALLBACK, 0, "mirror", &mirror, N_("push|fetch"),
                        N_("set up remote as a mirror to push to or fetch from"),
                        PARSE_OPT_OPTARG, parse_mirror_opt },
                OPT_END()
        };

        argc = parse_options(argc, argv, NULL, options, builtin_remote_add_usage,
                             0);

        if (argc != 2)
                usage_with_options(builtin_remote_add_usage, options);

        if (mirror && master)
                die(_("specifying a master branch makes no sense with --mirror"));
        if (mirror && !(mirror & MIRROR_FETCH) && track.nr)
                die(_("specifying branches to track makes sense only with fetch mirrors"));

        name = argv[0];
        url = argv[1];

        remote = remote_get(name);
        if (remote && (remote->url_nr > 1 ||
                        (strcmp(name, remote->url[0]) &&
                                strcmp(url, remote->url[0])) ||
                        remote->fetch_refspec_nr))
                die(_("remote %s already exists."), name);

        strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
        if (!valid_fetch_refspec(buf2.buf))
                die(_("'%s' is not a valid remote name"), name);

        strbuf_addf(&buf, "remote.%s.url", name);
        if (git_config_set(buf.buf, url))
                return 1;

        if (!mirror || mirror & MIRROR_FETCH) {
                strbuf_reset(&buf);
                strbuf_addf(&buf, "remote.%s.fetch", name);
                if (track.nr == 0)
                        string_list_append(&track, "*");
                for (i = 0; i < track.nr; i++) {
                        if (add_branch(buf.buf, track.items[i].string,
                                       name, mirror, &buf2))
                                return 1;
                }
        }

        if (mirror & MIRROR_PUSH) {
                strbuf_reset(&buf);
                strbuf_addf(&buf, "remote.%s.mirror", name);
                if (git_config_set(buf.buf, "true"))
                        return 1;
        }

        if (fetch_tags != TAGS_DEFAULT) {
                strbuf_reset(&buf);
                strbuf_addf(&buf, "remote.%s.tagopt", name);
                if (git_config_set(buf.buf,
                        fetch_tags == TAGS_SET ? "--tags" : "--no-tags"))
                        return 1;
        }

        if (fetch && fetch_remote(name))
                return 1;

        if (master) {
                strbuf_reset(&buf);
                strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);

                strbuf_reset(&buf2);
                strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);

                if (create_symref(buf.buf, buf2.buf, "remote add"))
                        return error(_("Could not setup master '%s'"), master);
        }

        strbuf_release(&buf);
        strbuf_release(&buf2);
        string_list_clear(&track, 0);

        return 0;
}

struct branch_info {
        char *remote_name;
        struct string_list merge;
        int rebase;
};

static struct string_list branch_list;

static const char *abbrev_ref(const char *name, const char *prefix)
{
        skip_prefix(name, prefix, &name);
        return name;
}
#define abbrev_branch(name) abbrev_ref((name), "refs/heads/")

static int config_read_branches(const char *key, const char *value, void *cb)
{
        if (starts_with(key, "branch.")) {
                const char *orig_key = key;
                char *name;
                struct string_list_item *item;
                struct branch_info *info;
                enum { REMOTE, MERGE, REBASE } type;
                size_t key_len;

                key += 7;
                if (strip_suffix(key, ".remote", &key_len)) {
                        name = xmemdupz(key, key_len);
                        type = REMOTE;
                } else if (strip_suffix(key, ".merge", &key_len)) {
                        name = xmemdupz(key, key_len);
                        type = MERGE;
                } else if (strip_suffix(key, ".rebase", &key_len)) {
                        name = xmemdupz(key, key_len);
                        type = REBASE;
                } else
                        return 0;

                item = string_list_insert(&branch_list, name);

                if (!item->util)
                        item->util = xcalloc(1, sizeof(struct branch_info));
                info = item->util;
                if (type == REMOTE) {
                        if (info->remote_name)
                                warning(_("more than one %s"), orig_key);
                        info->remote_name = xstrdup(value);
                } else if (type == MERGE) {
                        char *space = strchr(value, ' ');
                        value = abbrev_branch(value);
                        while (space) {
                                char *merge;
                                merge = xstrndup(value, space - value);
                                string_list_append(&info->merge, merge);
                                value = abbrev_branch(space + 1);
                                space = strchr(value, ' ');
                        }
                        string_list_append(&info->merge, xstrdup(value));
                } else {
                        int v = git_config_maybe_bool(orig_key, value);
                        if (v >= 0)
                                info->rebase = v;
                        else if (!strcmp(value, "preserve"))
                                info->rebase = 1;
                }
        }
        return 0;
}

static void read_branches(void)
{
        if (branch_list.nr)
                return;
        git_config(config_read_branches, NULL);
}

struct ref_states {
        struct remote *remote;
        struct string_list new, stale, tracked, heads, push;
        int queried;
};

static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
{
        struct ref *fetch_map = NULL, **tail = &fetch_map;
        struct ref *ref, *stale_refs;
        int i;

        for (i = 0; i < states->remote->fetch_refspec_nr; i++)
                if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
                        die(_("Could not get fetch map for refspec %s"),
                                states->remote->fetch_refspec[i]);

        states->new.strdup_strings = 1;
        states->tracked.strdup_strings = 1;
        states->stale.strdup_strings = 1;
        for (ref = fetch_map; ref; ref = ref->next) {
                if (!ref->peer_ref || !ref_exists(ref->peer_ref->name))
                        string_list_append(&states->new, abbrev_branch(ref->name));
                else
                        string_list_append(&states->tracked, abbrev_branch(ref->name));
        }
        stale_refs = get_stale_heads(states->remote->fetch,
                                     states->remote->fetch_refspec_nr, fetch_map);
        for (ref = stale_refs; ref; ref = ref->next) {
                struct string_list_item *item =
                        string_list_append(&states->stale, abbrev_branch(ref->name));
                item->util = xstrdup(ref->name);
        }
        free_refs(stale_refs);
        free_refs(fetch_map);

        string_list_sort(&states->new);
        string_list_sort(&states->tracked);
        string_list_sort(&states->stale);

        return 0;
}

struct push_info {
        char *dest;
        int forced;
        enum {
                PUSH_STATUS_CREATE = 0,
                PUSH_STATUS_DELETE,
                PUSH_STATUS_UPTODATE,
                PUSH_STATUS_FASTFORWARD,
                PUSH_STATUS_OUTOFDATE,
                PUSH_STATUS_NOTQUERIED
        } status;
};

static int get_push_ref_states(const struct ref *remote_refs,
        struct ref_states *states)
{
        struct remote *remote = states->remote;
        struct ref *ref, *local_refs, *push_map;
        if (remote->mirror)
                return 0;

        local_refs = get_local_heads();
        push_map = copy_ref_list(remote_refs);

        match_push_refs(local_refs, &push_map, remote->push_refspec_nr,
                        remote->push_refspec, MATCH_REFS_NONE);

        states->push.strdup_strings = 1;
        for (ref = push_map; ref; ref = ref->next) {
                struct string_list_item *item;
                struct push_info *info;

                if (!ref->peer_ref)
                        continue;
                hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);

                item = string_list_append(&states->push,
                                          abbrev_branch(ref->peer_ref->name));
                item->util = xcalloc(1, sizeof(struct push_info));
                info = item->util;
                info->forced = ref->force;
                info->dest = xstrdup(abbrev_branch(ref->name));

                if (is_null_sha1(ref->new_sha1)) {
                        info->status = PUSH_STATUS_DELETE;
                } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
                        info->status = PUSH_STATUS_UPTODATE;
                else if (is_null_sha1(ref->old_sha1))
                        info->status = PUSH_STATUS_CREATE;
                else if (has_sha1_file(ref->old_sha1) &&
                         ref_newer(ref->new_sha1, ref->old_sha1))
                        info->status = PUSH_STATUS_FASTFORWARD;
                else
                        info->status = PUSH_STATUS_OUTOFDATE;
        }
        free_refs(local_refs);
        free_refs(push_map);
        return 0;
}

static int get_push_ref_states_noquery(struct ref_states *states)
{
        int i;
        struct remote *remote = states->remote;
        struct string_list_item *item;
        struct push_info *info;

        if (remote->mirror)
                return 0;

        states->push.strdup_strings = 1;
        if (!remote->push_refspec_nr) {
                item = string_list_append(&states->push, _("(matching)"));
                info = item->util = xcalloc(1, sizeof(struct push_info));
                info->status = PUSH_STATUS_NOTQUERIED;
                info->dest = xstrdup(item->string);
        }
        for (i = 0; i < remote->push_refspec_nr; i++) {
                struct refspec *spec = remote->push + i;
                if (spec->matching)
                        item = string_list_append(&states->push, _("(matching)"));
                else if (strlen(spec->src))
                        item = string_list_append(&states->push, spec->src);
                else
                        item = string_list_append(&states->push, _("(delete)"));

                info = item->util = xcalloc(1, sizeof(struct push_info));
                info->forced = spec->force;
                info->status = PUSH_STATUS_NOTQUERIED;
                info->dest = xstrdup(spec->dst ? spec->dst : item->string);
        }
        return 0;
}

static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
{
        struct ref *ref, *matches;
        struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
        struct refspec refspec;

        refspec.force = 0;
        refspec.pattern = 1;
        refspec.src = refspec.dst = "refs/heads/*";
        states->heads.strdup_strings = 1;
        get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
        matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
                                    fetch_map, 1);
        for (ref = matches; ref; ref = ref->next)
                string_list_append(&states->heads, abbrev_branch(ref->name));

        free_refs(fetch_map);
        free_refs(matches);

        return 0;
}

struct known_remote {
        struct known_remote *next;
        struct remote *remote;
};

struct known_remotes {
        struct remote *to_delete;
        struct known_remote *list;
};

static int add_known_remote(struct remote *remote, void *cb_data)
{
        struct known_remotes *all = cb_data;
        struct known_remote *r;

        if (!strcmp(all->to_delete->name, remote->name))
                return 0;

        r = xmalloc(sizeof(*r));
        r->remote = remote;
        r->next = all->list;
        all->list = r;
        return 0;
}

struct branches_for_remote {
        struct remote *remote;
        struct string_list *branches, *skipped;
        struct known_remotes *keep;
};

static int add_branch_for_removal(const char *refname,
        const struct object_id *oid, int flags, void *cb_data)
{
        struct branches_for_remote *branches = cb_data;
        struct refspec refspec;
        struct known_remote *kr;

        memset(&refspec, 0, sizeof(refspec));
        refspec.dst = (char *)refname;
        if (remote_find_tracking(branches->remote, &refspec))
                return 0;

        /* don't delete a branch if another remote also uses it */
        for (kr = branches->keep->list; kr; kr = kr->next) {
                memset(&refspec, 0, sizeof(refspec));
                refspec.dst = (char *)refname;
                if (!remote_find_tracking(kr->remote, &refspec))
                        return 0;
        }

        /* don't delete non-remote-tracking refs */
        if (!starts_with(refname, "refs/remotes/")) {
                /* advise user how to delete local branches */
                if (starts_with(refname, "refs/heads/"))
                        string_list_append(branches->skipped,
                                           abbrev_branch(refname));
                /* silently skip over other non-remote refs */
                return 0;
        }

        /* make sure that symrefs are deleted */
        if (flags & REF_ISSYMREF)
                return unlink(git_path("%s", refname));

        string_list_append(branches->branches, refname);

        return 0;
}

struct rename_info {
        const char *old;
        const char *new;
        struct string_list *remote_branches;
};

static int read_remote_branches(const char *refname,
        const struct object_id *oid, int flags, void *cb_data)
{
        struct rename_info *rename = cb_data;
        struct strbuf buf = STRBUF_INIT;
        struct string_list_item *item;
        int flag;
        struct object_id orig_oid;
        const char *symref;

        strbuf_addf(&buf, "refs/remotes/%s/", rename->old);
        if (starts_with(refname, buf.buf)) {
                item = string_list_append(rename->remote_branches, xstrdup(refname));
                symref = resolve_ref_unsafe(refname, RESOLVE_REF_READING,
                                            orig_oid.hash, &flag);
                if (flag & REF_ISSYMREF)
                        item->util = xstrdup(symref);
                else
                        item->util = NULL;
        }

        return 0;
}

static int migrate_file(struct remote *remote)
{
        struct strbuf buf = STRBUF_INIT;
        int i;

        strbuf_addf(&buf, "remote.%s.url", remote->name);
        for (i = 0; i < remote->url_nr; i++)
                if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
                        return error(_("Could not append '%s' to '%s'"),
                                        remote->url[i], buf.buf);
        strbuf_reset(&buf);
        strbuf_addf(&buf, "remote.%s.push", remote->name);
        for (i = 0; i < remote->push_refspec_nr; i++)
                if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
                        return error(_("Could not append '%s' to '%s'"),
                                        remote->push_refspec[i], buf.buf);
        strbuf_reset(&buf);
        strbuf_addf(&buf, "remote.%s.fetch", remote->name);
        for (i = 0; i < remote->fetch_refspec_nr; i++)
                if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
                        return error(_("Could not append '%s' to '%s'"),
                                        remote->fetch_refspec[i], buf.buf);
        if (remote->origin == REMOTE_REMOTES)
                unlink_or_warn(git_path("remotes/%s", remote->name));
        else if (remote->origin == REMOTE_BRANCHES)
                unlink_or_warn(git_path("branches/%s", remote->name));
        return 0;
}

static int mv(int argc, const char **argv)
{
        struct option options[] = {
                OPT_END()
        };
        struct remote *oldremote, *newremote;
        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT,
                old_remote_context = STRBUF_INIT;
        struct string_list remote_branches = STRING_LIST_INIT_NODUP;
        struct rename_info rename;
        int i, refspec_updated = 0;

        if (argc != 3)
                usage_with_options(builtin_remote_rename_usage, options);

        rename.old = argv[1];
        rename.new = argv[2];
        rename.remote_branches = &remote_branches;

        oldremote = remote_get(rename.old);
        if (!oldremote)
                die(_("No such remote: %s"), rename.old);

        if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
                return migrate_file(oldremote);

        newremote = remote_get(rename.new);
        if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
                die(_("remote %s already exists."), rename.new);

        strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
        if (!valid_fetch_refspec(buf.buf))
                die(_("'%s' is not a valid remote name"), rename.new);

        strbuf_reset(&buf);
        strbuf_addf(&buf, "remote.%s", rename.old);
        strbuf_addf(&buf2, "remote.%s", rename.new);
        if (git_config_rename_section(buf.buf, buf2.buf) < 1)
                return error(_("Could not rename config section '%s' to '%s'"),
                                buf.buf, buf2.buf);

        strbuf_reset(&buf);
        strbuf_addf(&buf, "remote.%s.fetch", rename.new);
        if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
                return error(_("Could not remove config section '%s'"), buf.buf);
        strbuf_addf(&old_remote_context, ":refs/remotes/%s/", rename.old);
        for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
                char *ptr;

                strbuf_reset(&buf2);
                strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
                ptr = strstr(buf2.buf, old_remote_context.buf);
                if (ptr) {
                        refspec_updated = 1;
                        strbuf_splice(&buf2,
                                      ptr-buf2.buf + strlen(":refs/remotes/"),
                                      strlen(rename.old), rename.new,
                                      strlen(rename.new));
                } else
                        warning(_("Not updating non-default fetch refspec\n"
                                  "\t%s\n"
                                  "\tPlease update the configuration manually if necessary."),
                                buf2.buf);

                if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
                        return error(_("Could not append '%s'"), buf.buf);
        }

        read_branches();
        for (i = 0; i < branch_list.nr; i++) {
                struct string_list_item *item = branch_list.items + i;
                struct branch_info *info = item->util;
                if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
                        strbuf_reset(&buf);
                        strbuf_addf(&buf, "branch.%s.remote", item->string);
                        if (git_config_set(buf.buf, rename.new)) {
                                return error(_("Could not set '%s'"), buf.buf);
                        }
                }
        }

        if (!refspec_updated)
                return 0;

        /*
         * First remove symrefs, then rename the rest, finally create
         * the new symrefs.
         */
        for_each_ref(read_remote_branches, &rename);
        for (i = 0; i < remote_branches.nr; i++) {
                struct string_list_item *item = remote_branches.items + i;
                int flag = 0;
                struct object_id oid;

                read_ref_full(item->string, RESOLVE_REF_READING, oid.hash, &flag);
                if (!(flag & REF_ISSYMREF))
                        continue;
                if (delete_ref(item->string, NULL, REF_NODEREF))
                        die(_("deleting '%s' failed"), item->string);
        }
        for (i = 0; i < remote_branches.nr; i++) {
                struct string_list_item *item = remote_branches.items + i;

                if (item->util)
                        continue;
                strbuf_reset(&buf);
                strbuf_addstr(&buf, item->string);
                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
                                rename.new, strlen(rename.new));
                strbuf_reset(&buf2);
                strbuf_addf(&buf2, "remote: renamed %s to %s",
                                item->string, buf.buf);
                if (rename_ref(item->string, buf.buf, buf2.buf))
                        die(_("renaming '%s' failed"), item->string);
        }
        for (i = 0; i < remote_branches.nr; i++) {
                struct string_list_item *item = remote_branches.items + i;

                if (!item->util)
                        continue;
                strbuf_reset(&buf);
                strbuf_addstr(&buf, item->string);
                strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
                                rename.new, strlen(rename.new));
                strbuf_reset(&buf2);
                strbuf_addstr(&buf2, item->util);
                strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
                                rename.new, strlen(rename.new));
                strbuf_reset(&buf3);
                strbuf_addf(&buf3, "remote: renamed %s to %s",
                                item->string, buf.buf);
                if (create_symref(buf.buf, buf2.buf, buf3.buf))
                        die(_("creating '%s' failed"), buf.buf);
        }
        return 0;
}

static int rm(int argc, const char **argv)
{
        struct option options[] = {
                OPT_END()
        };
        struct remote *remote;
        struct strbuf buf = STRBUF_INIT;
        struct known_remotes known_remotes = { NULL, NULL };
        struct string_list branches = STRING_LIST_INIT_DUP;
        struct string_list skipped = STRING_LIST_INIT_DUP;
        struct branches_for_remote cb_data;
        int i, result;

        memset(&cb_data, 0, sizeof(cb_data));
        cb_data.branches = &branches;
        cb_data.skipped = &skipped;
        cb_data.keep = &known_remotes;

        if (argc != 2)
                usage_with_options(builtin_remote_rm_usage, options);

        remote = remote_get(argv[1]);
        if (!remote)
                die(_("No such remote: %s"), argv[1]);

        known_remotes.to_delete = remote;
        for_each_remote(add_known_remote, &known_remotes);

        read_branches();
        for (i = 0; i < branch_list.nr; i++) {
                struct string_list_item *item = branch_list.items + i;
                struct branch_info *info = item->util;
                if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
                        const char *keys[] = { "remote", "merge", NULL }, **k;
                        for (k = keys; *k; k++) {
                                strbuf_reset(&buf);
                                strbuf_addf(&buf, "branch.%s.%s",
                                                item->string, *k);
                                if (git_config_set(buf.buf, NULL)) {
                                        strbuf_release(&buf);
                                        return -1;
                                }
                        }
                }
        }

        /*
         * We cannot just pass a function to for_each_ref() which deletes
         * the branches one by one, since for_each_ref() relies on cached
         * refs, which are invalidated when deleting a branch.
         */
        cb_data.remote = remote;
        result = for_each_ref(add_branch_for_removal, &cb_data);
        strbuf_release(&buf);

        if (!result)
                result = delete_refs(&branches);
        string_list_clear(&branches, 0);

        if (skipped.nr) {
                fprintf_ln(stderr,
                           Q_("Note: A branch outside the refs/remotes/ hierarchy was not removed;\n"
                              "to delete it, use:",
                              "Note: Some branches outside the refs/remotes/ hierarchy were not removed;\n"
                              "to delete them, use:",
                              skipped.nr));
                for (i = 0; i < skipped.nr; i++)
                        fprintf(stderr, "  git branch -d %s\n",
                                skipped.items[i].string);
        }
        string_list_clear(&skipped, 0);

        if (!result) {
                strbuf_addf(&buf, "remote.%s", remote->name);
                if (git_config_rename_section(buf.buf, NULL) < 1)
                        return error(_("Could not remove config section '%s'"), buf.buf);
        }

        return result;
}

static void clear_push_info(void *util, const char *string)
{
        struct push_info *info = util;
        free(info->dest);
        free(info);
}

static void free_remote_ref_states(struct ref_states *states)
{
        string_list_clear(&states->new, 0);
        string_list_clear(&states->stale, 1);
        string_list_clear(&states->tracked, 0);
        string_list_clear(&states->heads, 0);
        string_list_clear_func(&states->push, clear_push_info);
}

static int append_ref_to_tracked_list(const char *refname,
        const struct object_id *oid, int flags, void *cb_data)
{
        struct ref_states *states = cb_data;
        struct refspec refspec;

        if (flags & REF_ISSYMREF)
                return 0;

        memset(&refspec, 0, sizeof(refspec));
        refspec.dst = (char *)refname;
        if (!remote_find_tracking(states->remote, &refspec))
                string_list_append(&states->tracked, abbrev_branch(refspec.src));

        return 0;
}

static int get_remote_ref_states(const char *name,
                                 struct ref_states *states,
                                 int query)
{
        struct transport *transport;
        const struct ref *remote_refs;

        states->remote = remote_get(name);
        if (!states->remote)
                return error(_("No such remote: %s"), name);

        read_branches();

        if (query) {
                transport = transport_get(states->remote, states->remote->url_nr > 0 ?
                        states->remote->url[0] : NULL);
                remote_refs = transport_get_remote_refs(transport);
                transport_disconnect(transport);

                states->queried = 1;
                if (query & GET_REF_STATES)
                        get_ref_states(remote_refs, states);
                if (query & GET_HEAD_NAMES)
                        get_head_names(remote_refs, states);
                if (query & GET_PUSH_REF_STATES)
                        get_push_ref_states(remote_refs, states);
        } else {
                for_each_ref(append_ref_to_tracked_list, states);
                string_list_sort(&states->tracked);
                get_push_ref_states_noquery(states);
        }

        return 0;
}

struct show_info {
        struct string_list *list;
        struct ref_states *states;
        int width, width2;
        int any_rebase;
};

static int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
{
        struct show_info *info = cb_data;
        int n = strlen(item->string);
        if (n > info->width)
                info->width = n;
        string_list_insert(info->list, item->string);
        return 0;
}

static int show_remote_info_item(struct string_list_item *item, void *cb_data)
{
        struct show_info *info = cb_data;
        struct ref_states *states = info->states;
        const char *name = item->string;

        if (states->queried) {
                const char *fmt = "%s";
                const char *arg = "";
                if (string_list_has_string(&states->new, name)) {
                        fmt = _(" new (next fetch will store in remotes/%s)");
                        arg = states->remote->name;
                } else if (string_list_has_string(&states->tracked, name))
                        arg = _(" tracked");
                else if (string_list_has_string(&states->stale, name))
                        arg = _(" stale (use 'git remote prune' to remove)");
                else
                        arg = _(" ???");
                printf("    %-*s", info->width, name);
                printf(fmt, arg);
                printf("\n");
        } else
                printf("    %s\n", name);

        return 0;
}

static int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
{
        struct show_info *show_info = cb_data;
        struct ref_states *states = show_info->states;
        struct branch_info *branch_info = branch_item->util;
        struct string_list_item *item;
        int n;

        if (!branch_info->merge.nr || !branch_info->remote_name ||
            strcmp(states->remote->name, branch_info->remote_name))
                return 0;
        if ((n = strlen(branch_item->string)) > show_info->width)
                show_info->width = n;
        if (branch_info->rebase)
                show_info->any_rebase = 1;

        item = string_list_insert(show_info->list, branch_item->string);
        item->util = branch_info;

        return 0;
}

static int show_local_info_item(struct string_list_item *item, void *cb_data)
{
        struct show_info *show_info = cb_data;
        struct branch_info *branch_info = item->util;
        struct string_list *merge = &branch_info->merge;
        const char *also;
        int i;

        if (branch_info->rebase && branch_info->merge.nr > 1) {
                error(_("invalid branch.%s.merge; cannot rebase onto > 1 branch"),
                        item->string);
                return 0;
        }

        printf("    %-*s ", show_info->width, item->string);
        if (branch_info->rebase) {
                printf_ln(_("rebases onto remote %s"), merge->items[0].string);
                return 0;
        } else if (show_info->any_rebase) {
                printf_ln(_(" merges with remote %s"), merge->items[0].string);
                also = _("    and with remote");
        } else {
                printf_ln(_("merges with remote %s"), merge->items[0].string);
                also = _("   and with remote");
        }
        for (i = 1; i < merge->nr; i++)
                printf("    %-*s %s %s\n", show_info->width, "", also,
                       merge->items[i].string);

        return 0;
}

static int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
{
        struct show_info *show_info = cb_data;
        struct push_info *push_info = push_item->util;
        struct string_list_item *item;
        int n;
        if ((n = strlen(push_item->string)) > show_info->width)
                show_info->width = n;
        if ((n = strlen(push_info->dest)) > show_info->width2)
                show_info->width2 = n;
        item = string_list_append(show_info->list, push_item->string);
        item->util = push_item->util;
        return 0;
}

/*
 * Sorting comparison for a string list that has push_info
 * structs in its util field
 */
static int cmp_string_with_push(const void *va, const void *vb)
{
        const struct string_list_item *a = va;
        const struct string_list_item *b = vb;
        const struct push_info *a_push = a->util;
        const struct push_info *b_push = b->util;
        int cmp = strcmp(a->string, b->string);
        return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
}

static int show_push_info_item(struct string_list_item *item, void *cb_data)
{
        struct show_info *show_info = cb_data;
        struct push_info *push_info = item->util;
        const char *src = item->string, *status = NULL;

        switch (push_info->status) {
        case PUSH_STATUS_CREATE:
                status = _("create");
                break;
        case PUSH_STATUS_DELETE:
                status = _("delete");
                src = _("(none)");
                break;
        case PUSH_STATUS_UPTODATE:
                status = _("up to date");
                break;
        case PUSH_STATUS_FASTFORWARD:
                status = _("fast-forwardable");
                break;
        case PUSH_STATUS_OUTOFDATE:
                status = _("local out of date");
                break;
        case PUSH_STATUS_NOTQUERIED:
                break;
        }
        if (status) {
                if (push_info->forced)
                        printf_ln(_("    %-*s forces to %-*s (%s)"), show_info->width, src,
                               show_info->width2, push_info->dest, status);
                else
                        printf_ln(_("    %-*s pushes to %-*s (%s)"), show_info->width, src,
                               show_info->width2, push_info->dest, status);
        } else {
                if (push_info->forced)
                        printf_ln(_("    %-*s forces to %s"), show_info->width, src,
                               push_info->dest);
                else
                        printf_ln(_("    %-*s pushes to %s"), show_info->width, src,
                               push_info->dest);
        }
        return 0;
}

static int get_one_entry(struct remote *remote, void *priv)
{
        struct string_list *list = priv;
        struct strbuf url_buf = STRBUF_INIT;
        const char **url;
        int i, url_nr;

        if (remote->url_nr > 0) {
                strbuf_addf(&url_buf, "%s (fetch)", remote->url[0]);
                string_list_append(list, remote->name)->util =
                                strbuf_detach(&url_buf, NULL);
        } else
                string_list_append(list, remote->name)->util = NULL;
        if (remote->pushurl_nr) {
                url = remote->pushurl;
                url_nr = remote->pushurl_nr;
        } else {
                url = remote->url;
                url_nr = remote->url_nr;
        }
        for (i = 0; i < url_nr; i++)
        {
                strbuf_addf(&url_buf, "%s (push)", url[i]);
                string_list_append(list, remote->name)->util =
                                strbuf_detach(&url_buf, NULL);
        }

        return 0;
}

static int show_all(void)
{
        struct string_list list = STRING_LIST_INIT_NODUP;
        int result;

        list.strdup_strings = 1;
        result = for_each_remote(get_one_entry, &list);

        if (!result) {
                int i;

                string_list_sort(&list);
                for (i = 0; i < list.nr; i++) {
                        struct string_list_item *item = list.items + i;
                        if (verbose)
                                printf("%s\t%s\n", item->string,
                                        item->util ? (const char *)item->util : "");
                        else {
                                if (i && !strcmp((item - 1)->string, item->string))
                                        continue;
                                printf("%s\n", item->string);
                        }
                }
        }
        string_list_clear(&list, 1);
        return result;
}

static int show(int argc, const char **argv)
{
        int no_query = 0, result = 0, query_flag = 0;
        struct option options[] = {
                OPT_BOOL('n', NULL, &no_query, N_("do not query remotes")),
                OPT_END()
        };
        struct ref_states states;
        struct string_list info_list = STRING_LIST_INIT_NODUP;
        struct show_info info;

        argc = parse_options(argc, argv, NULL, options, builtin_remote_show_usage,
                             0);

        if (argc < 1)
                return show_all();

        if (!no_query)
                query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);

        memset(&states, 0, sizeof(states));
        memset(&info, 0, sizeof(info));
        info.states = &states;
        info.list = &info_list;
        for (; argc; argc--, argv++) {
                int i;
                const char **url;
                int url_nr;

                get_remote_ref_states(*argv, &states, query_flag);

                printf_ln(_("* remote %s"), *argv);
                printf_ln(_("  Fetch URL: %s"), states.remote->url_nr > 0 ?
                       states.remote->url[0] : _("(no URL)"));
                if (states.remote->pushurl_nr) {
                        url = states.remote->pushurl;
                        url_nr = states.remote->pushurl_nr;
                } else {
                        url = states.remote->url;
                        url_nr = states.remote->url_nr;
                }
                for (i = 0; i < url_nr; i++)
                        printf_ln(_("  Push  URL: %s"), url[i]);
                if (!i)
                        printf_ln(_("  Push  URL: %s"), "(no URL)");
                if (no_query)
                        printf_ln(_("  HEAD branch: %s"), "(not queried)");
                else if (!states.heads.nr)
                        printf_ln(_("  HEAD branch: %s"), "(unknown)");
                else if (states.heads.nr == 1)
                        printf_ln(_("  HEAD branch: %s"), states.heads.items[0].string);
                else {
                        printf(_("  HEAD branch (remote HEAD is ambiguous,"
                                 " may be one of the following):\n"));
                        for (i = 0; i < states.heads.nr; i++)
                                printf("    %s\n", states.heads.items[i].string);
                }

                /* remote branch info */
                info.width = 0;
                for_each_string_list(&states.new, add_remote_to_show_info, &info);
                for_each_string_list(&states.tracked, add_remote_to_show_info, &info);
                for_each_string_list(&states.stale, add_remote_to_show_info, &info);
                if (info.list->nr)
                        printf_ln(Q_("  Remote branch:%s",
                                     "  Remote branches:%s",
                                     info.list->nr),
                                  no_query ? _(" (status not queried)") : "");
                for_each_string_list(info.list, show_remote_info_item, &info);
                string_list_clear(info.list, 0);

                /* git pull info */
                info.width = 0;
                info.any_rebase = 0;
                for_each_string_list(&branch_list, add_local_to_show_info, &info);
                if (info.list->nr)
                        printf_ln(Q_("  Local branch configured for 'git pull':",
                                     "  Local branches configured for 'git pull':",
                                     info.list->nr));
                for_each_string_list(info.list, show_local_info_item, &info);
                string_list_clear(info.list, 0);

                /* git push info */
                if (states.remote->mirror)
                        printf_ln(_("  Local refs will be mirrored by 'git push'"));

                info.width = info.width2 = 0;
                for_each_string_list(&states.push, add_push_to_show_info, &info);
                qsort(info.list->items, info.list->nr,
                        sizeof(*info.list->items), cmp_string_with_push);
                if (info.list->nr)
                        printf_ln(Q_("  Local ref configured for 'git push'%s:",
                                     "  Local refs configured for 'git push'%s:",
                                     info.list->nr),
                                  no_query ? _(" (status not queried)") : "");
                for_each_string_list(info.list, show_push_info_item, &info);
                string_list_clear(info.list, 0);

                free_remote_ref_states(&states);
        }

        return result;
}

static int set_head(int argc, const char **argv)
{
        int i, opt_a = 0, opt_d = 0, result = 0;
        struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
        char *head_name = NULL;

        struct option options[] = {
                OPT_BOOL('a', "auto", &opt_a,
                         N_("set refs/remotes/<name>/HEAD according to remote")),
                OPT_BOOL('d', "delete", &opt_d,
                         N_("delete refs/remotes/<name>/HEAD")),
                OPT_END()
        };
        argc = parse_options(argc, argv, NULL, options, builtin_remote_sethead_usage,
                             0);
        if (argc)
                strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);

        if (!opt_a && !opt_d && argc == 2) {
                head_name = xstrdup(argv[1]);
        } else if (opt_a && !opt_d && argc == 1) {
                struct ref_states states;
                memset(&states, 0, sizeof(states));
                get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
                if (!states.heads.nr)
                        result |= error(_("Cannot determine remote HEAD"));
                else if (states.heads.nr > 1) {
                        result |= error(_("Multiple remote HEAD branches. "
                                          "Please choose one explicitly with:"));
                        for (i = 0; i < states.heads.nr; i++)
                                fprintf(stderr, "  git remote set-head %s %s\n",
                                        argv[0], states.heads.items[i].string);
                } else
                        head_name = xstrdup(states.heads.items[0].string);
                free_remote_ref_states(&states);
        } else if (opt_d && !opt_a && argc == 1) {
                if (delete_ref(buf.buf, NULL, REF_NODEREF))
                        result |= error(_("Could not delete %s"), buf.buf);
        } else
                usage_with_options(builtin_remote_sethead_usage, options);

        if (head_name) {
                strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
                /* make sure it's valid */
                if (!ref_exists(buf2.buf))
                        result |= error(_("Not a valid ref: %s"), buf2.buf);
                else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
                        result |= error(_("Could not setup %s"), buf.buf);
                if (opt_a)
                        printf("%s/HEAD set to %s\n", argv[0], head_name);
                free(head_name);
        }

        strbuf_release(&buf);
        strbuf_release(&buf2);
        return result;
}

static int prune_remote(const char *remote, int dry_run)
{
        int result = 0;
        struct ref_states states;
        struct string_list refs_to_prune = STRING_LIST_INIT_NODUP;
        struct string_list_item *item;
        const char *dangling_msg = dry_run
                ? _(" %s will become dangling!")
                : _(" %s has become dangling!");

        memset(&states, 0, sizeof(states));
        get_remote_ref_states(remote, &states, GET_REF_STATES);

        if (!states.stale.nr) {
                free_remote_ref_states(&states);
                return 0;
        }

        printf_ln(_("Pruning %s"), remote);
        printf_ln(_("URL: %s"),
                  states.remote->url_nr
                  ? states.remote->url[0]
                  : _("(no URL)"));

        for_each_string_list_item(item, &states.stale)
                string_list_append(&refs_to_prune, item->util);
        string_list_sort(&refs_to_prune);

        if (!dry_run)
                result |= delete_refs(&refs_to_prune);

        for_each_string_list_item(item, &states.stale) {
                const char *refname = item->util;

                if (dry_run)
                        printf_ln(_(" * [would prune] %s"),
                               abbrev_ref(refname, "refs/remotes/"));
                else
                        printf_ln(_(" * [pruned] %s"),
                               abbrev_ref(refname, "refs/remotes/"));
        }

        warn_dangling_symrefs(stdout, dangling_msg, &refs_to_prune);

        string_list_clear(&refs_to_prune, 0);
        free_remote_ref_states(&states);
        return result;
}

static int prune(int argc, const char **argv)
{
        int dry_run = 0, result = 0;
        struct option options[] = {
                OPT__DRY_RUN(&dry_run, N_("dry run")),
                OPT_END()
        };

        argc = parse_options(argc, argv, NULL, options, builtin_remote_prune_usage,
                             0);

        if (argc < 1)
                usage_with_options(builtin_remote_prune_usage, options);

        for (; argc; argc--, argv++)
                result |= prune_remote(*argv, dry_run);

        return result;
}

static int get_remote_default(const char *key, const char *value, void *priv)
{
        if (strcmp(key, "remotes.default") == 0) {
                int *found = priv;
                *found = 1;
        }
        return 0;
}

static int update(int argc, const char **argv)
{
        int i, prune = -1;
        struct option options[] = {
                OPT_BOOL('p', "prune", &prune,
                         N_("prune remotes after fetching")),
                OPT_END()
        };
        struct argv_array fetch_argv = ARGV_ARRAY_INIT;
        int default_defined = 0;
        int retval;

        argc = parse_options(argc, argv, NULL, options, builtin_remote_update_usage,
                             PARSE_OPT_KEEP_ARGV0);

        argv_array_push(&fetch_argv, "fetch");

        if (prune != -1)
                argv_array_push(&fetch_argv, prune ? "--prune" : "--no-prune");
        if (verbose)
                argv_array_push(&fetch_argv, "-v");
        argv_array_push(&fetch_argv, "--multiple");
        if (argc < 2)
                argv_array_push(&fetch_argv, "default");
        for (i = 1; i < argc; i++)
                argv_array_push(&fetch_argv, argv[i]);

        if (strcmp(fetch_argv.argv[fetch_argv.argc-1], "default") == 0) {
                git_config(get_remote_default, &default_defined);
                if (!default_defined) {
                        argv_array_pop(&fetch_argv);
                        argv_array_push(&fetch_argv, "--all");
                }
        }

        retval = run_command_v_opt(fetch_argv.argv, RUN_GIT_CMD);
        argv_array_clear(&fetch_argv);
        return retval;
}

static int remove_all_fetch_refspecs(const char *remote, const char *key)
{
        return git_config_set_multivar(key, NULL, NULL, 1);
}

static int add_branches(struct remote *remote, const char **branches,
                        const char *key)
{
        const char *remotename = remote->name;
        int mirror = remote->mirror;
        struct strbuf refspec = STRBUF_INIT;

        for (; *branches; branches++)
                if (add_branch(key, *branches, remotename, mirror, &refspec)) {
                        strbuf_release(&refspec);
                        return 1;
                }

        strbuf_release(&refspec);
        return 0;
}

static int set_remote_branches(const char *remotename, const char **branches,
                                int add_mode)
{
        struct strbuf key = STRBUF_INIT;
        struct remote *remote;

        strbuf_addf(&key, "remote.%s.fetch", remotename);

        if (!remote_is_configured(remotename))
                die(_("No such remote '%s'"), remotename);
        remote = remote_get(remotename);

        if (!add_mode && remove_all_fetch_refspecs(remotename, key.buf)) {
                strbuf_release(&key);
                return 1;
        }
        if (add_branches(remote, branches, key.buf)) {
                strbuf_release(&key);
                return 1;
        }

        strbuf_release(&key);
        return 0;
}

static int set_branches(int argc, const char **argv)
{
        int add_mode = 0;
        struct option options[] = {
                OPT_BOOL('\0', "add", &add_mode, N_("add branch")),
                OPT_END()
        };

        argc = parse_options(argc, argv, NULL, options,
                             builtin_remote_setbranches_usage, 0);
        if (argc == 0) {
                error(_("no remote specified"));
                usage_with_options(builtin_remote_setbranches_usage, options);
        }
        argv[argc] = NULL;

        return set_remote_branches(argv[0], argv + 1, add_mode);
}

static int set_url(int argc, const char **argv)
{
        int i, push_mode = 0, add_mode = 0, delete_mode = 0;
        int matches = 0, negative_matches = 0;
        const char *remotename = NULL;
        const char *newurl = NULL;
        const char *oldurl = NULL;
        struct remote *remote;
        regex_t old_regex;
        const char **urlset;
        int urlset_nr;
        struct strbuf name_buf = STRBUF_INIT;
        struct option options[] = {
                OPT_BOOL('\0', "push", &push_mode,
                         N_("manipulate push URLs")),
                OPT_BOOL('\0', "add", &add_mode,
                         N_("add URL")),
                OPT_BOOL('\0', "delete", &delete_mode,
                            N_("delete URLs")),
                OPT_END()
        };
        argc = parse_options(argc, argv, NULL, options, builtin_remote_seturl_usage,
                             PARSE_OPT_KEEP_ARGV0);

        if (add_mode && delete_mode)
                die(_("--add --delete doesn't make sense"));

        if (argc < 3 || argc > 4 || ((add_mode || delete_mode) && argc != 3))
                usage_with_options(builtin_remote_seturl_usage, options);

        remotename = argv[1];
        newurl = argv[2];
        if (argc > 3)
                oldurl = argv[3];

        if (delete_mode)
                oldurl = newurl;

        if (!remote_is_configured(remotename))
                die(_("No such remote '%s'"), remotename);
        remote = remote_get(remotename);

        if (push_mode) {
                strbuf_addf(&name_buf, "remote.%s.pushurl", remotename);
                urlset = remote->pushurl;
                urlset_nr = remote->pushurl_nr;
        } else {
                strbuf_addf(&name_buf, "remote.%s.url", remotename);
                urlset = remote->url;
                urlset_nr = remote->url_nr;
        }

        /* Special cases that add new entry. */
        if ((!oldurl && !delete_mode) || add_mode) {
                if (add_mode)
                        git_config_set_multivar(name_buf.buf, newurl,
                                "^$", 0);
                else
                        git_config_set(name_buf.buf, newurl);
                strbuf_release(&name_buf);
                return 0;
        }

        /* Old URL specified. Demand that one matches. */
        if (regcomp(&old_regex, oldurl, REG_EXTENDED))
                die(_("Invalid old URL pattern: %s"), oldurl);

        for (i = 0; i < urlset_nr; i++)
                if (!regexec(&old_regex, urlset[i], 0, NULL, 0))
                        matches++;
                else
                        negative_matches++;
        if (!delete_mode && !matches)
                die(_("No such URL found: %s"), oldurl);
        if (delete_mode && !negative_matches && !push_mode)
                die(_("Will not delete all non-push URLs"));

        regfree(&old_regex);

        if (!delete_mode)
                git_config_set_multivar(name_buf.buf, newurl, oldurl, 0);
        else
                git_config_set_multivar(name_buf.buf, NULL, oldurl, 1);
        return 0;
}

int cmd_remote(int argc, const char **argv, const char *prefix)
{
        struct option options[] = {
                OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
                OPT_END()
        };
        int result;

        argc = parse_options(argc, argv, prefix, options, builtin_remote_usage,
                PARSE_OPT_STOP_AT_NON_OPTION);

        if (argc < 1)
                result = show_all();
        else if (!strcmp(argv[0], "add"))
                result = add(argc, argv);
        else if (!strcmp(argv[0], "rename"))
                result = mv(argc, argv);
        else if (!strcmp(argv[0], "rm") || !strcmp(argv[0], "remove"))
                result = rm(argc, argv);
        else if (!strcmp(argv[0], "set-head"))
                result = set_head(argc, argv);
        else if (!strcmp(argv[0], "set-branches"))
                result = set_branches(argc, argv);
        else if (!strcmp(argv[0], "set-url"))
                result = set_url(argc, argv);
        else if (!strcmp(argv[0], "show"))
                result = show(argc, argv);
        else if (!strcmp(argv[0], "prune"))
                result = prune(argc, argv);
        else if (!strcmp(argv[0], "update"))
                result = update(argc, argv);
        else {
                error(_("Unknown subcommand: %s"), argv[0]);
                usage_with_options(builtin_remote_usage, options);
        }

        return result ? 1 : 0;
}

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