builtin-remote.c

   1 #include "cache.h"
   2 #include "parse-options.h"
   3 #include "transport.h"
   4 #include "remote.h"
   5 #include "string-list.h"
   6 #include "strbuf.h"
   7 #include "run-command.h"
   8 #include "refs.h"
   9
  10 static const char * const builtin_remote_usage[] = {
  11         "git remote [-v | --verbose]",
  12         "git remote add [-t <branch>] [-m <master>] [-f] [--mirror] <name> <url>",
  13         "git remote rename <old> <new>",
  14         "git remote rm <name>",
  15         "git remote set-head <name> [-a | -d | <branch>]",
  16         "git remote show [-n] <name>",
  17         "git remote prune [-n | --dry-run] <name>",
  18         "git remote [-v | --verbose] update [-p | --prune] [group]",
  19         NULL
  20 };
  21
  22 #define GET_REF_STATES (1<<0)
  23 #define GET_HEAD_NAMES (1<<1)
  24 #define GET_PUSH_REF_STATES (1<<2)
  25
  26 static int verbose;
  27
  28 static int show_all(void);
  29 static int prune_remote(const char *remote, int dry_run);
  30
  31 static inline int postfixcmp(const char *string, const char *postfix)
  32 {
  33         int len1 = strlen(string), len2 = strlen(postfix);
  34         if (len1 < len2)
  35                 return 1;
  36         return strcmp(string + len1 - len2, postfix);
  37 }
  38
  39 static int opt_parse_track(const struct option *opt, const char *arg, int not)
  40 {
  41         struct string_list *list = opt->value;
  42         if (not)
  43                 string_list_clear(list, 0);
  44         else
  45                 string_list_append(arg, list);
  46         return 0;
  47 }
  48
  49 static int fetch_remote(const char *name)
  50 {
  51         const char *argv[] = { "fetch", name, NULL, NULL };
  52         if (verbose) {
  53                 argv[1] = "-v";
  54                 argv[2] = name;
  55         }
  56         printf("Updating %s\n", name);
  57         if (run_command_v_opt(argv, RUN_GIT_CMD))
  58                 return error("Could not fetch %s", name);
  59         return 0;
  60 }
  61
  62 static int add(int argc, const char **argv)
  63 {
  64         int fetch = 0, mirror = 0;
  65         struct string_list track = { NULL, 0, 0 };
  66         const char *master = NULL;
  67         struct remote *remote;
  68         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
  69         const char *name, *url;
  70         int i;
  71
  72         struct option options[] = {
  73                 OPT_GROUP("add specific options"),
  74                 OPT_BOOLEAN('f', "fetch", &fetch, "fetch the remote branches"),
  75                 OPT_CALLBACK('t', "track", &track, "branch",
  76                         "branch(es) to track", opt_parse_track),
  77                 OPT_STRING('m', "master", &master, "branch", "master branch"),
  78                 OPT_BOOLEAN(0, "mirror", &mirror, "no separate remotes"),
  79                 OPT_END()
  80         };
  81
  82         argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
  83
  84         if (argc < 2)
  85                 usage_with_options(builtin_remote_usage, options);
  86
  87         name = argv[0];
  88         url = argv[1];
  89
  90         remote = remote_get(name);
  91         if (remote && (remote->url_nr > 1 || strcmp(name, remote->url[0]) ||
  92                         remote->fetch_refspec_nr))
  93                 die("remote %s already exists.", name);
  94
  95         strbuf_addf(&buf2, "refs/heads/test:refs/remotes/%s/test", name);
  96         if (!valid_fetch_refspec(buf2.buf))
  97                 die("'%s' is not a valid remote name", name);
  98
  99         strbuf_addf(&buf, "remote.%s.url", name);
 100         if (git_config_set(buf.buf, url))
 101                 return 1;
 102
 103         strbuf_reset(&buf);
 104         strbuf_addf(&buf, "remote.%s.fetch", name);
 105
 106         if (track.nr == 0)
 107                 string_list_append("*", &track);
 108         for (i = 0; i < track.nr; i++) {
 109                 struct string_list_item *item = track.items + i;
 110
 111                 strbuf_reset(&buf2);
 112                 strbuf_addch(&buf2, '+');
 113                 if (mirror)
 114                         strbuf_addf(&buf2, "refs/%s:refs/%s",
 115                                         item->string, item->string);
 116                 else
 117                         strbuf_addf(&buf2, "refs/heads/%s:refs/remotes/%s/%s",
 118                                         item->string, name, item->string);
 119                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 120                         return 1;
 121         }
 122
 123         if (mirror) {
 124                 strbuf_reset(&buf);
 125                 strbuf_addf(&buf, "remote.%s.mirror", name);
 126                 if (git_config_set(buf.buf, "true"))
 127                         return 1;
 128         }
 129
 130         if (fetch && fetch_remote(name))
 131                 return 1;
 132
 133         if (master) {
 134                 strbuf_reset(&buf);
 135                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", name);
 136
 137                 strbuf_reset(&buf2);
 138                 strbuf_addf(&buf2, "refs/remotes/%s/%s", name, master);
 139
 140                 if (create_symref(buf.buf, buf2.buf, "remote add"))
 141                         return error("Could not setup master '%s'", master);
 142         }
 143
 144         strbuf_release(&buf);
 145         strbuf_release(&buf2);
 146         string_list_clear(&track, 0);
 147
 148         return 0;
 149 }
 150
 151 struct branch_info {
 152         char *remote_name;
 153         struct string_list merge;
 154         int rebase;
 155 };
 156
 157 static struct string_list branch_list;
 158
 159 static const char *abbrev_ref(const char *name, const char *prefix)
 160 {
 161         const char *abbrev = skip_prefix(name, prefix);
 162         if (abbrev)
 163                 return abbrev;
 164         return name;
 165 }
 166 #define abbrev_branch(name) abbrev_ref((name), "refs/heads/")
 167
 168 static int config_read_branches(const char *key, const char *value, void *cb)
 169 {
 170         if (!prefixcmp(key, "branch.")) {
 171                 const char *orig_key = key;
 172                 char *name;
 173                 struct string_list_item *item;
 174                 struct branch_info *info;
 175                 enum { REMOTE, MERGE, REBASE } type;
 176
 177                 key += 7;
 178                 if (!postfixcmp(key, ".remote")) {
 179                         name = xstrndup(key, strlen(key) - 7);
 180                         type = REMOTE;
 181                 } else if (!postfixcmp(key, ".merge")) {
 182                         name = xstrndup(key, strlen(key) - 6);
 183                         type = MERGE;
 184                 } else if (!postfixcmp(key, ".rebase")) {
 185                         name = xstrndup(key, strlen(key) - 7);
 186                         type = REBASE;
 187                 } else
 188                         return 0;
 189
 190                 item = string_list_insert(name, &branch_list);
 191
 192                 if (!item->util)
 193                         item->util = xcalloc(sizeof(struct branch_info), 1);
 194                 info = item->util;
 195                 if (type == REMOTE) {
 196                         if (info->remote_name)
 197                                 warning("more than one %s", orig_key);
 198                         info->remote_name = xstrdup(value);
 199                 } else if (type == MERGE) {
 200                         char *space = strchr(value, ' ');
 201                         value = abbrev_branch(value);
 202                         while (space) {
 203                                 char *merge;
 204                                 merge = xstrndup(value, space - value);
 205                                 string_list_append(merge, &info->merge);
 206                                 value = abbrev_branch(space + 1);
 207                                 space = strchr(value, ' ');
 208                         }
 209                         string_list_append(xstrdup(value), &info->merge);
 210                 } else
 211                         info->rebase = git_config_bool(orig_key, value);
 212         }
 213         return 0;
 214 }
 215
 216 static void read_branches(void)
 217 {
 218         if (branch_list.nr)
 219                 return;
 220         git_config(config_read_branches, NULL);
 221 }
 222
 223 struct ref_states {
 224         struct remote *remote;
 225         struct string_list new, stale, tracked, heads, push;
 226         int queried;
 227 };
 228
 229 static int handle_one_branch(const char *refname,
 230         const unsigned char *sha1, int flags, void *cb_data)
 231 {
 232         struct ref_states *states = cb_data;
 233         struct refspec refspec;
 234
 235         memset(&refspec, 0, sizeof(refspec));
 236         refspec.dst = (char *)refname;
 237         if (!remote_find_tracking(states->remote, &refspec)) {
 238                 struct string_list_item *item;
 239                 const char *name = abbrev_branch(refspec.src);
 240                 /* symbolic refs pointing nowhere were handled already */
 241                 if ((flags & REF_ISSYMREF) ||
 242                     string_list_has_string(&states->tracked, name) ||
 243                     string_list_has_string(&states->new, name))
 244                         return 0;
 245                 item = string_list_append(name, &states->stale);
 246                 item->util = xstrdup(refname);
 247         }
 248         return 0;
 249 }
 250
 251 static int get_ref_states(const struct ref *remote_refs, struct ref_states *states)
 252 {
 253         struct ref *fetch_map = NULL, **tail = &fetch_map;
 254         struct ref *ref;
 255         int i;
 256
 257         for (i = 0; i < states->remote->fetch_refspec_nr; i++)
 258                 if (get_fetch_map(remote_refs, states->remote->fetch + i, &tail, 1))
 259                         die("Could not get fetch map for refspec %s",
 260                                 states->remote->fetch_refspec[i]);
 261
 262         states->new.strdup_strings = states->tracked.strdup_strings = 1;
 263         for (ref = fetch_map; ref; ref = ref->next) {
 264                 unsigned char sha1[20];
 265                 if (!ref->peer_ref || read_ref(ref->peer_ref->name, sha1))
 266                         string_list_append(abbrev_branch(ref->name), &states->new);
 267                 else
 268                         string_list_append(abbrev_branch(ref->name), &states->tracked);
 269         }
 270         free_refs(fetch_map);
 271
 272         sort_string_list(&states->new);
 273         sort_string_list(&states->tracked);
 274         for_each_ref(handle_one_branch, states);
 275         sort_string_list(&states->stale);
 276
 277         return 0;
 278 }
 279
 280 struct push_info {
 281         char *dest;
 282         int forced;
 283         enum {
 284                 PUSH_STATUS_CREATE = 0,
 285                 PUSH_STATUS_DELETE,
 286                 PUSH_STATUS_UPTODATE,
 287                 PUSH_STATUS_FASTFORWARD,
 288                 PUSH_STATUS_OUTOFDATE,
 289                 PUSH_STATUS_NOTQUERIED,
 290         } status;
 291 };
 292
 293 static int get_push_ref_states(const struct ref *remote_refs,
 294         struct ref_states *states)
 295 {
 296         struct remote *remote = states->remote;
 297         struct ref *ref, *local_refs, *push_map;
 298         if (remote->mirror)
 299                 return 0;
 300
 301         local_refs = get_local_heads();
 302         push_map = copy_ref_list(remote_refs);
 303
 304         match_refs(local_refs, &push_map, remote->push_refspec_nr,
 305                    remote->push_refspec, MATCH_REFS_NONE);
 306
 307         states->push.strdup_strings = 1;
 308         for (ref = push_map; ref; ref = ref->next) {
 309                 struct string_list_item *item;
 310                 struct push_info *info;
 311
 312                 if (!ref->peer_ref)
 313                         continue;
 314                 hashcpy(ref->new_sha1, ref->peer_ref->new_sha1);
 315
 316                 item = string_list_append(abbrev_branch(ref->peer_ref->name),
 317                                           &states->push);
 318                 item->util = xcalloc(sizeof(struct push_info), 1);
 319                 info = item->util;
 320                 info->forced = ref->force;
 321                 info->dest = xstrdup(abbrev_branch(ref->name));
 322
 323                 if (is_null_sha1(ref->new_sha1)) {
 324                         info->status = PUSH_STATUS_DELETE;
 325                 } else if (!hashcmp(ref->old_sha1, ref->new_sha1))
 326                         info->status = PUSH_STATUS_UPTODATE;
 327                 else if (is_null_sha1(ref->old_sha1))
 328                         info->status = PUSH_STATUS_CREATE;
 329                 else if (has_sha1_file(ref->old_sha1) &&
 330                          ref_newer(ref->new_sha1, ref->old_sha1))
 331                         info->status = PUSH_STATUS_FASTFORWARD;
 332                 else
 333                         info->status = PUSH_STATUS_OUTOFDATE;
 334         }
 335         free_refs(local_refs);
 336         free_refs(push_map);
 337         return 0;
 338 }
 339
 340 static int get_push_ref_states_noquery(struct ref_states *states)
 341 {
 342         int i;
 343         struct remote *remote = states->remote;
 344         struct string_list_item *item;
 345         struct push_info *info;
 346
 347         if (remote->mirror)
 348                 return 0;
 349
 350         states->push.strdup_strings = 1;
 351         if (!remote->push_refspec_nr) {
 352                 item = string_list_append("(matching)", &states->push);
 353                 info = item->util = xcalloc(sizeof(struct push_info), 1);
 354                 info->status = PUSH_STATUS_NOTQUERIED;
 355                 info->dest = xstrdup(item->string);
 356         }
 357         for (i = 0; i < remote->push_refspec_nr; i++) {
 358                 struct refspec *spec = remote->push + i;
 359                 if (spec->matching)
 360                         item = string_list_append("(matching)", &states->push);
 361                 else if (strlen(spec->src))
 362                         item = string_list_append(spec->src, &states->push);
 363                 else
 364                         item = string_list_append("(delete)", &states->push);
 365
 366                 info = item->util = xcalloc(sizeof(struct push_info), 1);
 367                 info->forced = spec->force;
 368                 info->status = PUSH_STATUS_NOTQUERIED;
 369                 info->dest = xstrdup(spec->dst ? spec->dst : item->string);
 370         }
 371         return 0;
 372 }
 373
 374 static int get_head_names(const struct ref *remote_refs, struct ref_states *states)
 375 {
 376         struct ref *ref, *matches;
 377         struct ref *fetch_map = NULL, **fetch_map_tail = &fetch_map;
 378         struct refspec refspec;
 379
 380         refspec.force = 0;
 381         refspec.pattern = 1;
 382         refspec.src = refspec.dst = "refs/heads/*";
 383         states->heads.strdup_strings = 1;
 384         get_fetch_map(remote_refs, &refspec, &fetch_map_tail, 0);
 385         matches = guess_remote_head(find_ref_by_name(remote_refs, "HEAD"),
 386                                     fetch_map, 1);
 387         for(ref = matches; ref; ref = ref->next)
 388                 string_list_append(abbrev_branch(ref->name), &states->heads);
 389
 390         free_refs(fetch_map);
 391         free_refs(matches);
 392
 393         return 0;
 394 }
 395
 396 struct known_remote {
 397         struct known_remote *next;
 398         struct remote *remote;
 399 };
 400
 401 struct known_remotes {
 402         struct remote *to_delete;
 403         struct known_remote *list;
 404 };
 405
 406 static int add_known_remote(struct remote *remote, void *cb_data)
 407 {
 408         struct known_remotes *all = cb_data;
 409         struct known_remote *r;
 410
 411         if (!strcmp(all->to_delete->name, remote->name))
 412                 return 0;
 413
 414         r = xmalloc(sizeof(*r));
 415         r->remote = remote;
 416         r->next = all->list;
 417         all->list = r;
 418         return 0;
 419 }
 420
 421 struct branches_for_remote {
 422         struct remote *remote;
 423         struct string_list *branches, *skipped;
 424         struct known_remotes *keep;
 425 };
 426
 427 static int add_branch_for_removal(const char *refname,
 428         const unsigned char *sha1, int flags, void *cb_data)
 429 {
 430         struct branches_for_remote *branches = cb_data;
 431         struct refspec refspec;
 432         struct string_list_item *item;
 433         struct known_remote *kr;
 434
 435         memset(&refspec, 0, sizeof(refspec));
 436         refspec.dst = (char *)refname;
 437         if (remote_find_tracking(branches->remote, &refspec))
 438                 return 0;
 439
 440         /* don't delete a branch if another remote also uses it */
 441         for (kr = branches->keep->list; kr; kr = kr->next) {
 442                 memset(&refspec, 0, sizeof(refspec));
 443                 refspec.dst = (char *)refname;
 444                 if (!remote_find_tracking(kr->remote, &refspec))
 445                         return 0;
 446         }
 447
 448         /* don't delete non-remote refs */
 449         if (prefixcmp(refname, "refs/remotes")) {
 450                 /* advise user how to delete local branches */
 451                 if (!prefixcmp(refname, "refs/heads/"))
 452                         string_list_append(abbrev_branch(refname),
 453                                            branches->skipped);
 454                 /* silently skip over other non-remote refs */
 455                 return 0;
 456         }
 457
 458         /* make sure that symrefs are deleted */
 459         if (flags & REF_ISSYMREF)
 460                 return unlink(git_path("%s", refname));
 461
 462         item = string_list_append(refname, branches->branches);
 463         item->util = xmalloc(20);
 464         hashcpy(item->util, sha1);
 465
 466         return 0;
 467 }
 468
 469 struct rename_info {
 470         const char *old;
 471         const char *new;
 472         struct string_list *remote_branches;
 473 };
 474
 475 static int read_remote_branches(const char *refname,
 476         const unsigned char *sha1, int flags, void *cb_data)
 477 {
 478         struct rename_info *rename = cb_data;
 479         struct strbuf buf = STRBUF_INIT;
 480         struct string_list_item *item;
 481         int flag;
 482         unsigned char orig_sha1[20];
 483         const char *symref;
 484
 485         strbuf_addf(&buf, "refs/remotes/%s", rename->old);
 486         if(!prefixcmp(refname, buf.buf)) {
 487                 item = string_list_append(xstrdup(refname), rename->remote_branches);
 488                 symref = resolve_ref(refname, orig_sha1, 1, &flag);
 489                 if (flag & REF_ISSYMREF)
 490                         item->util = xstrdup(symref);
 491                 else
 492                         item->util = NULL;
 493         }
 494
 495         return 0;
 496 }
 497
 498 static int migrate_file(struct remote *remote)
 499 {
 500         struct strbuf buf = STRBUF_INIT;
 501         int i;
 502         char *path = NULL;
 503
 504         strbuf_addf(&buf, "remote.%s.url", remote->name);
 505         for (i = 0; i < remote->url_nr; i++)
 506                 if (git_config_set_multivar(buf.buf, remote->url[i], "^$", 0))
 507                         return error("Could not append '%s' to '%s'",
 508                                         remote->url[i], buf.buf);
 509         strbuf_reset(&buf);
 510         strbuf_addf(&buf, "remote.%s.push", remote->name);
 511         for (i = 0; i < remote->push_refspec_nr; i++)
 512                 if (git_config_set_multivar(buf.buf, remote->push_refspec[i], "^$", 0))
 513                         return error("Could not append '%s' to '%s'",
 514                                         remote->push_refspec[i], buf.buf);
 515         strbuf_reset(&buf);
 516         strbuf_addf(&buf, "remote.%s.fetch", remote->name);
 517         for (i = 0; i < remote->fetch_refspec_nr; i++)
 518                 if (git_config_set_multivar(buf.buf, remote->fetch_refspec[i], "^$", 0))
 519                         return error("Could not append '%s' to '%s'",
 520                                         remote->fetch_refspec[i], buf.buf);
 521         if (remote->origin == REMOTE_REMOTES)
 522                 path = git_path("remotes/%s", remote->name);
 523         else if (remote->origin == REMOTE_BRANCHES)
 524                 path = git_path("branches/%s", remote->name);
 525         if (path)
 526                 unlink_or_warn(path);
 527         return 0;
 528 }
 529
 530 static int mv(int argc, const char **argv)
 531 {
 532         struct option options[] = {
 533                 OPT_END()
 534         };
 535         struct remote *oldremote, *newremote;
 536         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT, buf3 = STRBUF_INIT;
 537         struct string_list remote_branches = { NULL, 0, 0, 0 };
 538         struct rename_info rename;
 539         int i;
 540
 541         if (argc != 3)
 542                 usage_with_options(builtin_remote_usage, options);
 543
 544         rename.old = argv[1];
 545         rename.new = argv[2];
 546         rename.remote_branches = &remote_branches;
 547
 548         oldremote = remote_get(rename.old);
 549         if (!oldremote)
 550                 die("No such remote: %s", rename.old);
 551
 552         if (!strcmp(rename.old, rename.new) && oldremote->origin != REMOTE_CONFIG)
 553                 return migrate_file(oldremote);
 554
 555         newremote = remote_get(rename.new);
 556         if (newremote && (newremote->url_nr > 1 || newremote->fetch_refspec_nr))
 557                 die("remote %s already exists.", rename.new);
 558
 559         strbuf_addf(&buf, "refs/heads/test:refs/remotes/%s/test", rename.new);
 560         if (!valid_fetch_refspec(buf.buf))
 561                 die("'%s' is not a valid remote name", rename.new);
 562
 563         strbuf_reset(&buf);
 564         strbuf_addf(&buf, "remote.%s", rename.old);
 565         strbuf_addf(&buf2, "remote.%s", rename.new);
 566         if (git_config_rename_section(buf.buf, buf2.buf) < 1)
 567                 return error("Could not rename config section '%s' to '%s'",
 568                                 buf.buf, buf2.buf);
 569
 570         strbuf_reset(&buf);
 571         strbuf_addf(&buf, "remote.%s.fetch", rename.new);
 572         if (git_config_set_multivar(buf.buf, NULL, NULL, 1))
 573                 return error("Could not remove config section '%s'", buf.buf);
 574         for (i = 0; i < oldremote->fetch_refspec_nr; i++) {
 575                 char *ptr;
 576
 577                 strbuf_reset(&buf2);
 578                 strbuf_addstr(&buf2, oldremote->fetch_refspec[i]);
 579                 ptr = strstr(buf2.buf, rename.old);
 580                 if (ptr)
 581                         strbuf_splice(&buf2, ptr-buf2.buf, strlen(rename.old),
 582                                         rename.new, strlen(rename.new));
 583                 if (git_config_set_multivar(buf.buf, buf2.buf, "^$", 0))
 584                         return error("Could not append '%s'", buf.buf);
 585         }
 586
 587         read_branches();
 588         for (i = 0; i < branch_list.nr; i++) {
 589                 struct string_list_item *item = branch_list.items + i;
 590                 struct branch_info *info = item->util;
 591                 if (info->remote_name && !strcmp(info->remote_name, rename.old)) {
 592                         strbuf_reset(&buf);
 593                         strbuf_addf(&buf, "branch.%s.remote", item->string);
 594                         if (git_config_set(buf.buf, rename.new)) {
 595                                 return error("Could not set '%s'", buf.buf);
 596                         }
 597                 }
 598         }
 599
 600         /*
 601          * First remove symrefs, then rename the rest, finally create
 602          * the new symrefs.
 603          */
 604         for_each_ref(read_remote_branches, &rename);
 605         for (i = 0; i < remote_branches.nr; i++) {
 606                 struct string_list_item *item = remote_branches.items + i;
 607                 int flag = 0;
 608                 unsigned char sha1[20];
 609
 610                 resolve_ref(item->string, sha1, 1, &flag);
 611                 if (!(flag & REF_ISSYMREF))
 612                         continue;
 613                 if (delete_ref(item->string, NULL, REF_NODEREF))
 614                         die("deleting '%s' failed", item->string);
 615         }
 616         for (i = 0; i < remote_branches.nr; i++) {
 617                 struct string_list_item *item = remote_branches.items + i;
 618
 619                 if (item->util)
 620                         continue;
 621                 strbuf_reset(&buf);
 622                 strbuf_addstr(&buf, item->string);
 623                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 624                                 rename.new, strlen(rename.new));
 625                 strbuf_reset(&buf2);
 626                 strbuf_addf(&buf2, "remote: renamed %s to %s",
 627                                 item->string, buf.buf);
 628                 if (rename_ref(item->string, buf.buf, buf2.buf))
 629                         die("renaming '%s' failed", item->string);
 630         }
 631         for (i = 0; i < remote_branches.nr; i++) {
 632                 struct string_list_item *item = remote_branches.items + i;
 633
 634                 if (!item->util)
 635                         continue;
 636                 strbuf_reset(&buf);
 637                 strbuf_addstr(&buf, item->string);
 638                 strbuf_splice(&buf, strlen("refs/remotes/"), strlen(rename.old),
 639                                 rename.new, strlen(rename.new));
 640                 strbuf_reset(&buf2);
 641                 strbuf_addstr(&buf2, item->util);
 642                 strbuf_splice(&buf2, strlen("refs/remotes/"), strlen(rename.old),
 643                                 rename.new, strlen(rename.new));
 644                 strbuf_reset(&buf3);
 645                 strbuf_addf(&buf3, "remote: renamed %s to %s",
 646                                 item->string, buf.buf);
 647                 if (create_symref(buf.buf, buf2.buf, buf3.buf))
 648                         die("creating '%s' failed", buf.buf);
 649         }
 650         return 0;
 651 }
 652
 653 static int remove_branches(struct string_list *branches)
 654 {
 655         int i, result = 0;
 656         for (i = 0; i < branches->nr; i++) {
 657                 struct string_list_item *item = branches->items + i;
 658                 const char *refname = item->string;
 659                 unsigned char *sha1 = item->util;
 660
 661                 if (delete_ref(refname, sha1, 0))
 662                         result |= error("Could not remove branch %s", refname);
 663         }
 664         return result;
 665 }
 666
 667 static int rm(int argc, const char **argv)
 668 {
 669         struct option options[] = {
 670                 OPT_END()
 671         };
 672         struct remote *remote;
 673         struct strbuf buf = STRBUF_INIT;
 674         struct known_remotes known_remotes = { NULL, NULL };
 675         struct string_list branches = { NULL, 0, 0, 1 };
 676         struct string_list skipped = { NULL, 0, 0, 1 };
 677         struct branches_for_remote cb_data = {
 678                 NULL, &branches, &skipped, &known_remotes
 679         };
 680         int i, result;
 681
 682         if (argc != 2)
 683                 usage_with_options(builtin_remote_usage, options);
 684
 685         remote = remote_get(argv[1]);
 686         if (!remote)
 687                 die("No such remote: %s", argv[1]);
 688
 689         known_remotes.to_delete = remote;
 690         for_each_remote(add_known_remote, &known_remotes);
 691
 692         strbuf_addf(&buf, "remote.%s", remote->name);
 693         if (git_config_rename_section(buf.buf, NULL) < 1)
 694                 return error("Could not remove config section '%s'", buf.buf);
 695
 696         read_branches();
 697         for (i = 0; i < branch_list.nr; i++) {
 698                 struct string_list_item *item = branch_list.items + i;
 699                 struct branch_info *info = item->util;
 700                 if (info->remote_name && !strcmp(info->remote_name, remote->name)) {
 701                         const char *keys[] = { "remote", "merge", NULL }, **k;
 702                         for (k = keys; *k; k++) {
 703                                 strbuf_reset(&buf);
 704                                 strbuf_addf(&buf, "branch.%s.%s",
 705                                                 item->string, *k);
 706                                 if (git_config_set(buf.buf, NULL)) {
 707                                         strbuf_release(&buf);
 708                                         return -1;
 709                                 }
 710                         }
 711                 }
 712         }
 713
 714         /*
 715          * We cannot just pass a function to for_each_ref() which deletes
 716          * the branches one by one, since for_each_ref() relies on cached
 717          * refs, which are invalidated when deleting a branch.
 718          */
 719         cb_data.remote = remote;
 720         result = for_each_ref(add_branch_for_removal, &cb_data);
 721         strbuf_release(&buf);
 722
 723         if (!result)
 724                 result = remove_branches(&branches);
 725         string_list_clear(&branches, 1);
 726
 727         if (skipped.nr) {
 728                 fprintf(stderr, skipped.nr == 1 ?
 729                         "Note: A non-remote branch was not removed; "
 730                         "to delete it, use:\n" :
 731                         "Note: Non-remote branches were not removed; "
 732                         "to delete them, use:\n");
 733                 for (i = 0; i < skipped.nr; i++)
 734                         fprintf(stderr, "  git branch -d %s\n",
 735                                 skipped.items[i].string);
 736         }
 737         string_list_clear(&skipped, 0);
 738
 739         return result;
 740 }
 741
 742 void clear_push_info(void *util, const char *string)
 743 {
 744         struct push_info *info = util;
 745         free(info->dest);
 746         free(info);
 747 }
 748
 749 static void free_remote_ref_states(struct ref_states *states)
 750 {
 751         string_list_clear(&states->new, 0);
 752         string_list_clear(&states->stale, 0);
 753         string_list_clear(&states->tracked, 0);
 754         string_list_clear(&states->heads, 0);
 755         string_list_clear_func(&states->push, clear_push_info);
 756 }
 757
 758 static int append_ref_to_tracked_list(const char *refname,
 759         const unsigned char *sha1, int flags, void *cb_data)
 760 {
 761         struct ref_states *states = cb_data;
 762         struct refspec refspec;
 763
 764         if (flags & REF_ISSYMREF)
 765                 return 0;
 766
 767         memset(&refspec, 0, sizeof(refspec));
 768         refspec.dst = (char *)refname;
 769         if (!remote_find_tracking(states->remote, &refspec))
 770                 string_list_append(abbrev_branch(refspec.src), &states->tracked);
 771
 772         return 0;
 773 }
 774
 775 static int get_remote_ref_states(const char *name,
 776                                  struct ref_states *states,
 777                                  int query)
 778 {
 779         struct transport *transport;
 780         const struct ref *remote_refs;
 781
 782         states->remote = remote_get(name);
 783         if (!states->remote)
 784                 return error("No such remote: %s", name);
 785
 786         read_branches();
 787
 788         if (query) {
 789                 transport = transport_get(NULL, states->remote->url_nr > 0 ?
 790                         states->remote->url[0] : NULL);
 791                 remote_refs = transport_get_remote_refs(transport);
 792                 transport_disconnect(transport);
 793
 794                 states->queried = 1;
 795                 if (query & GET_REF_STATES)
 796                         get_ref_states(remote_refs, states);
 797                 if (query & GET_HEAD_NAMES)
 798                         get_head_names(remote_refs, states);
 799                 if (query & GET_PUSH_REF_STATES)
 800                         get_push_ref_states(remote_refs, states);
 801         } else {
 802                 for_each_ref(append_ref_to_tracked_list, states);
 803                 sort_string_list(&states->tracked);
 804                 get_push_ref_states_noquery(states);
 805         }
 806
 807         return 0;
 808 }
 809
 810 struct show_info {
 811         struct string_list *list;
 812         struct ref_states *states;
 813         int width, width2;
 814         int any_rebase;
 815 };
 816
 817 int add_remote_to_show_info(struct string_list_item *item, void *cb_data)
 818 {
 819         struct show_info *info = cb_data;
 820         int n = strlen(item->string);
 821         if (n > info->width)
 822                 info->width = n;
 823         string_list_insert(item->string, info->list);
 824         return 0;
 825 }
 826
 827 int show_remote_info_item(struct string_list_item *item, void *cb_data)
 828 {
 829         struct show_info *info = cb_data;
 830         struct ref_states *states = info->states;
 831         const char *name = item->string;
 832
 833         if (states->queried) {
 834                 const char *fmt = "%s";
 835                 const char *arg = "";
 836                 if (string_list_has_string(&states->new, name)) {
 837                         fmt = " new (next fetch will store in remotes/%s)";
 838                         arg = states->remote->name;
 839                 } else if (string_list_has_string(&states->tracked, name))
 840                         arg = " tracked";
 841                 else if (string_list_has_string(&states->stale, name))
 842                         arg = " stale (use 'git remote prune' to remove)";
 843                 else
 844                         arg = " ???";
 845                 printf("    %-*s", info->width, name);
 846                 printf(fmt, arg);
 847                 printf("\n");
 848         } else
 849                 printf("    %s\n", name);
 850
 851         return 0;
 852 }
 853
 854 int add_local_to_show_info(struct string_list_item *branch_item, void *cb_data)
 855 {
 856         struct show_info *show_info = cb_data;
 857         struct ref_states *states = show_info->states;
 858         struct branch_info *branch_info = branch_item->util;
 859         struct string_list_item *item;
 860         int n;
 861
 862         if (!branch_info->merge.nr || !branch_info->remote_name ||
 863             strcmp(states->remote->name, branch_info->remote_name))
 864                 return 0;
 865         if ((n = strlen(branch_item->string)) > show_info->width)
 866                 show_info->width = n;
 867         if (branch_info->rebase)
 868                 show_info->any_rebase = 1;
 869
 870         item = string_list_insert(branch_item->string, show_info->list);
 871         item->util = branch_info;
 872
 873         return 0;
 874 }
 875
 876 int show_local_info_item(struct string_list_item *item, void *cb_data)
 877 {
 878         struct show_info *show_info = cb_data;
 879         struct branch_info *branch_info = item->util;
 880         struct string_list *merge = &branch_info->merge;
 881         const char *also;
 882         int i;
 883
 884         if (branch_info->rebase && branch_info->merge.nr > 1) {
 885                 error("invalid branch.%s.merge; cannot rebase onto > 1 branch",
 886                         item->string);
 887                 return 0;
 888         }
 889
 890         printf("    %-*s ", show_info->width, item->string);
 891         if (branch_info->rebase) {
 892                 printf("rebases onto remote %s\n", merge->items[0].string);
 893                 return 0;
 894         } else if (show_info->any_rebase) {
 895                 printf(" merges with remote %s\n", merge->items[0].string);
 896                 also = "    and with remote";
 897         } else {
 898                 printf("merges with remote %s\n", merge->items[0].string);
 899                 also = "   and with remote";
 900         }
 901         for (i = 1; i < merge->nr; i++)
 902                 printf("    %-*s %s %s\n", show_info->width, "", also,
 903                        merge->items[i].string);
 904
 905         return 0;
 906 }
 907
 908 int add_push_to_show_info(struct string_list_item *push_item, void *cb_data)
 909 {
 910         struct show_info *show_info = cb_data;
 911         struct push_info *push_info = push_item->util;
 912         struct string_list_item *item;
 913         int n;
 914         if ((n = strlen(push_item->string)) > show_info->width)
 915                 show_info->width = n;
 916         if ((n = strlen(push_info->dest)) > show_info->width2)
 917                 show_info->width2 = n;
 918         item = string_list_append(push_item->string, show_info->list);
 919         item->util = push_item->util;
 920         return 0;
 921 }
 922
 923 /*
 924  * Sorting comparison for a string list that has push_info
 925  * structs in its util field
 926  */
 927 static int cmp_string_with_push(const void *va, const void *vb)
 928 {
 929         const struct string_list_item *a = va;
 930         const struct string_list_item *b = vb;
 931         const struct push_info *a_push = a->util;
 932         const struct push_info *b_push = b->util;
 933         int cmp = strcmp(a->string, b->string);
 934         return cmp ? cmp : strcmp(a_push->dest, b_push->dest);
 935 }
 936
 937 int show_push_info_item(struct string_list_item *item, void *cb_data)
 938 {
 939         struct show_info *show_info = cb_data;
 940         struct push_info *push_info = item->util;
 941         char *src = item->string, *status = NULL;
 942
 943         switch (push_info->status) {
 944         case PUSH_STATUS_CREATE:
 945                 status = "create";
 946                 break;
 947         case PUSH_STATUS_DELETE:
 948                 status = "delete";
 949                 src = "(none)";
 950                 break;
 951         case PUSH_STATUS_UPTODATE:
 952                 status = "up to date";
 953                 break;
 954         case PUSH_STATUS_FASTFORWARD:
 955                 status = "fast forwardable";
 956                 break;
 957         case PUSH_STATUS_OUTOFDATE:
 958                 status = "local out of date";
 959                 break;
 960         case PUSH_STATUS_NOTQUERIED:
 961                 break;
 962         }
 963         if (status)
 964                 printf("    %-*s %s to %-*s (%s)\n", show_info->width, src,
 965                         push_info->forced ? "forces" : "pushes",
 966                         show_info->width2, push_info->dest, status);
 967         else
 968                 printf("    %-*s %s to %s\n", show_info->width, src,
 969                         push_info->forced ? "forces" : "pushes",
 970                         push_info->dest);
 971         return 0;
 972 }
 973
 974 static int show(int argc, const char **argv)
 975 {
 976         int no_query = 0, result = 0, query_flag = 0;
 977         struct option options[] = {
 978                 OPT_GROUP("show specific options"),
 979                 OPT_BOOLEAN('n', NULL, &no_query, "do not query remotes"),
 980                 OPT_END()
 981         };
 982         struct ref_states states;
 983         struct string_list info_list = { NULL, 0, 0, 0 };
 984         struct show_info info;
 985
 986         argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
 987
 988         if (argc < 1)
 989                 return show_all();
 990
 991         if (!no_query)
 992                 query_flag = (GET_REF_STATES | GET_HEAD_NAMES | GET_PUSH_REF_STATES);
 993
 994         memset(&states, 0, sizeof(states));
 995         memset(&info, 0, sizeof(info));
 996         info.states = &states;
 997         info.list = &info_list;
 998         for (; argc; argc--, argv++) {
 999                 int i;
1000
1001                 get_remote_ref_states(*argv, &states, query_flag);
1002
1003                 printf("* remote %s\n  URL: %s\n", *argv,
1004                         states.remote->url_nr > 0 ?
1005                                 states.remote->url[0] : "(no URL)");
1006                 if (no_query)
1007                         printf("  HEAD branch: (not queried)\n");
1008                 else if (!states.heads.nr)
1009                         printf("  HEAD branch: (unknown)\n");
1010                 else if (states.heads.nr == 1)
1011                         printf("  HEAD branch: %s\n", states.heads.items[0].string);
1012                 else {
1013                         printf("  HEAD branch (remote HEAD is ambiguous,"
1014                                " may be one of the following):\n");
1015                         for (i = 0; i < states.heads.nr; i++)
1016                                 printf("    %s\n", states.heads.items[i].string);
1017                 }
1018
1019                 /* remote branch info */
1020                 info.width = 0;
1021                 for_each_string_list(add_remote_to_show_info, &states.new, &info);
1022                 for_each_string_list(add_remote_to_show_info, &states.tracked, &info);
1023                 for_each_string_list(add_remote_to_show_info, &states.stale, &info);
1024                 if (info.list->nr)
1025                         printf("  Remote branch%s:%s\n",
1026                                info.list->nr > 1 ? "es" : "",
1027                                 no_query ? " (status not queried)" : "");
1028                 for_each_string_list(show_remote_info_item, info.list, &info);
1029                 string_list_clear(info.list, 0);
1030
1031                 /* git pull info */
1032                 info.width = 0;
1033                 info.any_rebase = 0;
1034                 for_each_string_list(add_local_to_show_info, &branch_list, &info);
1035                 if (info.list->nr)
1036                         printf("  Local branch%s configured for 'git pull':\n",
1037                                info.list->nr > 1 ? "es" : "");
1038                 for_each_string_list(show_local_info_item, info.list, &info);
1039                 string_list_clear(info.list, 0);
1040
1041                 /* git push info */
1042                 if (states.remote->mirror)
1043                         printf("  Local refs will be mirrored by 'git push'\n");
1044
1045                 info.width = info.width2 = 0;
1046                 for_each_string_list(add_push_to_show_info, &states.push, &info);
1047                 qsort(info.list->items, info.list->nr,
1048                         sizeof(*info.list->items), cmp_string_with_push);
1049                 if (info.list->nr)
1050                         printf("  Local ref%s configured for 'git push'%s:\n",
1051                                 info.list->nr > 1 ? "s" : "",
1052                                 no_query ? " (status not queried)" : "");
1053                 for_each_string_list(show_push_info_item, info.list, &info);
1054                 string_list_clear(info.list, 0);
1055
1056                 free_remote_ref_states(&states);
1057         }
1058
1059         return result;
1060 }
1061
1062 static int set_head(int argc, const char **argv)
1063 {
1064         int i, opt_a = 0, opt_d = 0, result = 0;
1065         struct strbuf buf = STRBUF_INIT, buf2 = STRBUF_INIT;
1066         char *head_name = NULL;
1067
1068         struct option options[] = {
1069                 OPT_GROUP("set-head specific options"),
1070                 OPT_BOOLEAN('a', "auto", &opt_a,
1071                             "set refs/remotes/<name>/HEAD according to remote"),
1072                 OPT_BOOLEAN('d', "delete", &opt_d,
1073                             "delete refs/remotes/<name>/HEAD"),
1074                 OPT_END()
1075         };
1076         argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
1077         if (argc)
1078                 strbuf_addf(&buf, "refs/remotes/%s/HEAD", argv[0]);
1079
1080         if (!opt_a && !opt_d && argc == 2) {
1081                 head_name = xstrdup(argv[1]);
1082         } else if (opt_a && !opt_d && argc == 1) {
1083                 struct ref_states states;
1084                 memset(&states, 0, sizeof(states));
1085                 get_remote_ref_states(argv[0], &states, GET_HEAD_NAMES);
1086                 if (!states.heads.nr)
1087                         result |= error("Cannot determine remote HEAD");
1088                 else if (states.heads.nr > 1) {
1089                         result |= error("Multiple remote HEAD branches. "
1090                                         "Please choose one explicitly with:");
1091                         for (i = 0; i < states.heads.nr; i++)
1092                                 fprintf(stderr, "  git remote set-head %s %s\n",
1093                                         argv[0], states.heads.items[i].string);
1094                 } else
1095                         head_name = xstrdup(states.heads.items[0].string);
1096                 free_remote_ref_states(&states);
1097         } else if (opt_d && !opt_a && argc == 1) {
1098                 if (delete_ref(buf.buf, NULL, REF_NODEREF))
1099                         result |= error("Could not delete %s", buf.buf);
1100         } else
1101                 usage_with_options(builtin_remote_usage, options);
1102
1103         if (head_name) {
1104                 unsigned char sha1[20];
1105                 strbuf_addf(&buf2, "refs/remotes/%s/%s", argv[0], head_name);
1106                 /* make sure it's valid */
1107                 if (!resolve_ref(buf2.buf, sha1, 1, NULL))
1108                         result |= error("Not a valid ref: %s", buf2.buf);
1109                 else if (create_symref(buf.buf, buf2.buf, "remote set-head"))
1110                         result |= error("Could not setup %s", buf.buf);
1111                 if (opt_a)
1112                         printf("%s/HEAD set to %s\n", argv[0], head_name);
1113                 free(head_name);
1114         }
1115
1116         strbuf_release(&buf);
1117         strbuf_release(&buf2);
1118         return result;
1119 }
1120
1121 static int prune(int argc, const char **argv)
1122 {
1123         int dry_run = 0, result = 0;
1124         struct option options[] = {
1125                 OPT_GROUP("prune specific options"),
1126                 OPT__DRY_RUN(&dry_run),
1127                 OPT_END()
1128         };
1129
1130         argc = parse_options(argc, argv, options, builtin_remote_usage, 0);
1131
1132         if (argc < 1)
1133                 usage_with_options(builtin_remote_usage, options);
1134
1135         for (; argc; argc--, argv++)
1136                 result |= prune_remote(*argv, dry_run);
1137
1138         return result;
1139 }
1140
1141 static int prune_remote(const char *remote, int dry_run)
1142 {
1143         int result = 0, i;
1144         struct ref_states states;
1145         const char *dangling_msg = dry_run
1146                 ? " %s will become dangling!\n"
1147                 : " %s has become dangling!\n";
1148
1149         memset(&states, 0, sizeof(states));
1150         get_remote_ref_states(remote, &states, GET_REF_STATES);
1151
1152         if (states.stale.nr) {
1153                 printf("Pruning %s\n", remote);
1154                 printf("URL: %s\n",
1155                        states.remote->url_nr
1156                        ? states.remote->url[0]
1157                        : "(no URL)");
1158         }
1159
1160         for (i = 0; i < states.stale.nr; i++) {
1161                 const char *refname = states.stale.items[i].util;
1162
1163                 if (!dry_run)
1164                         result |= delete_ref(refname, NULL, 0);
1165
1166                 printf(" * [%s] %s\n", dry_run ? "would prune" : "pruned",
1167                        abbrev_ref(refname, "refs/remotes/"));
1168                 warn_dangling_symref(dangling_msg, refname);
1169         }
1170
1171         free_remote_ref_states(&states);
1172         return result;
1173 }
1174
1175 static int get_one_remote_for_update(struct remote *remote, void *priv)
1176 {
1177         struct string_list *list = priv;
1178         if (!remote->skip_default_update)
1179                 string_list_append(remote->name, list);
1180         return 0;
1181 }
1182
1183 struct remote_group {
1184         const char *name;
1185         struct string_list *list;
1186 } remote_group;
1187
1188 static int get_remote_group(const char *key, const char *value, void *num_hits)
1189 {
1190         if (!prefixcmp(key, "remotes.") &&
1191                         !strcmp(key + 8, remote_group.name)) {
1192                 /* split list by white space */
1193                 int space = strcspn(value, " \t\n");
1194                 while (*value) {
1195                         if (space > 1) {
1196                                 string_list_append(xstrndup(value, space),
1197                                                 remote_group.list);
1198                                 ++*((int *)num_hits);
1199                         }
1200                         value += space + (value[space] != '\0');
1201                         space = strcspn(value, " \t\n");
1202                 }
1203         }
1204
1205         return 0;
1206 }
1207
1208 static int update(int argc, const char **argv)
1209 {
1210         int i, result = 0, prune = 0;
1211         struct string_list list = { NULL, 0, 0, 0 };
1212         static const char *default_argv[] = { NULL, "default", NULL };
1213         struct option options[] = {
1214                 OPT_GROUP("update specific options"),
1215                 OPT_BOOLEAN('p', "prune", &prune,
1216                             "prune remotes after fetching"),
1217                 OPT_END()
1218         };
1219
1220         argc = parse_options(argc, argv, options, builtin_remote_usage,
1221                              PARSE_OPT_KEEP_ARGV0);
1222         if (argc < 2) {
1223                 argc = 2;
1224                 argv = default_argv;
1225         }
1226
1227         remote_group.list = &list;
1228         for (i = 1; i < argc; i++) {
1229                 int groups_found = 0;
1230                 remote_group.name = argv[i];
1231                 result = git_config(get_remote_group, &groups_found);
1232                 if (!groups_found && (i != 1 || strcmp(argv[1], "default"))) {
1233                         struct remote *remote;
1234                         if (!remote_is_configured(argv[i]))
1235                                 die("No such remote or remote group: %s",
1236                                     argv[i]);
1237                         remote = remote_get(argv[i]);
1238                         string_list_append(remote->name, remote_group.list);
1239                 }
1240         }
1241
1242         if (!result && !list.nr  && argc == 2 && !strcmp(argv[1], "default"))
1243                 result = for_each_remote(get_one_remote_for_update, &list);
1244
1245         for (i = 0; i < list.nr; i++) {
1246                 int err = fetch_remote(list.items[i].string);
1247                 result |= err;
1248                 if (!err && prune)
1249                         result |= prune_remote(list.items[i].string, 0);
1250         }
1251
1252         /* all names were strdup()ed or strndup()ed */
1253         list.strdup_strings = 1;
1254         string_list_clear(&list, 0);
1255
1256         return result;
1257 }
1258
1259 static int get_one_entry(struct remote *remote, void *priv)
1260 {
1261         struct string_list *list = priv;
1262
1263         if (remote->url_nr > 0) {
1264                 int i;
1265
1266                 for (i = 0; i < remote->url_nr; i++)
1267                         string_list_append(remote->name, list)->util = (void *)remote->url[i];
1268         } else
1269                 string_list_append(remote->name, list)->util = NULL;
1270
1271         return 0;
1272 }
1273
1274 static int show_all(void)
1275 {
1276         struct string_list list = { NULL, 0, 0 };
1277         int result = for_each_remote(get_one_entry, &list);
1278
1279         if (!result) {
1280                 int i;
1281
1282                 sort_string_list(&list);
1283                 for (i = 0; i < list.nr; i++) {
1284                         struct string_list_item *item = list.items + i;
1285                         if (verbose)
1286                                 printf("%s\t%s\n", item->string,
1287                                         item->util ? (const char *)item->util : "");
1288                         else {
1289                                 if (i && !strcmp((item - 1)->string, item->string))
1290                                         continue;
1291                                 printf("%s\n", item->string);
1292                         }
1293                 }
1294         }
1295         return result;
1296 }
1297
1298 int cmd_remote(int argc, const char **argv, const char *prefix)
1299 {
1300         struct option options[] = {
1301                 OPT__VERBOSE(&verbose),
1302                 OPT_END()
1303         };
1304         int result;
1305
1306         argc = parse_options(argc, argv, options, builtin_remote_usage,
1307                 PARSE_OPT_STOP_AT_NON_OPTION);
1308
1309         if (argc < 1)
1310                 result = show_all();
1311         else if (!strcmp(argv[0], "add"))
1312                 result = add(argc, argv);
1313         else if (!strcmp(argv[0], "rename"))
1314                 result = mv(argc, argv);
1315         else if (!strcmp(argv[0], "rm"))
1316                 result = rm(argc, argv);
1317         else if (!strcmp(argv[0], "set-head"))
1318                 result = set_head(argc, argv);
1319         else if (!strcmp(argv[0], "show"))
1320                 result = show(argc, argv);
1321         else if (!strcmp(argv[0], "prune"))
1322                 result = prune(argc, argv);
1323         else if (!strcmp(argv[0], "update"))
1324                 result = update(argc, argv);
1325         else {
1326                 error("Unknown subcommand: %s", argv[0]);
1327                 usage_with_options(builtin_remote_usage, options);
1328         }
1329
1330         return result ? 1 : 0;
1331 }