builtin/tag.c

   1 /*
   2  * Builtin "git tag"
   3  *
   4  * Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>,
   5  *                    Carlos Rica <jasampler@gmail.com>
   6  * Based on git-tag.sh and mktag.c by Linus Torvalds.
   7  */
   8
   9 #include "cache.h"
  10 #include "config.h"
  11 #include "builtin.h"
  12 #include "refs.h"
  13 #include "object-store.h"
  14 #include "tag.h"
  15 #include "run-command.h"
  16 #include "parse-options.h"
  17 #include "diff.h"
  18 #include "revision.h"
  19 #include "gpg-interface.h"
  20 #include "oid-array.h"
  21 #include "column.h"
  22 #include "ref-filter.h"
  23 #include "date.h"
  24
  25 static const char * const git_tag_usage[] = {
  26         N_("git tag [-a | -s | -u <key-id>] [-f] [-m <msg> | -F <file>] [-e]\n"
  27            "        <tagname> [<commit> | <object>]"),
  28         N_("git tag -d <tagname>..."),
  29         N_("git tag [-n[<num>]] -l [--contains <commit>] [--no-contains <commit>]\n"
  30            "        [--points-at <object>] [--column[=<options>] | --no-column]\n"
  31            "        [--create-reflog] [--sort=<key>] [--format=<format>]\n"
  32            "        [--merged <commit>] [--no-merged <commit>] [<pattern>...]"),
  33         N_("git tag -v [--format=<format>] <tagname>..."),
  34         NULL
  35 };
  36
  37 static unsigned int colopts;
  38 static int force_sign_annotate;
  39 static int config_sign_tag = -1; /* unspecified */
  40
  41 static int list_tags(struct ref_filter *filter, struct ref_sorting *sorting,
  42                      struct ref_format *format)
  43 {
  44         struct ref_array array;
  45         struct strbuf output = STRBUF_INIT;
  46         struct strbuf err = STRBUF_INIT;
  47         char *to_free = NULL;
  48         int i;
  49
  50         memset(&array, 0, sizeof(array));
  51
  52         if (filter->lines == -1)
  53                 filter->lines = 0;
  54
  55         if (!format->format) {
  56                 if (filter->lines) {
  57                         to_free = xstrfmt("%s %%(contents:lines=%d)",
  58                                           "%(align:15)%(refname:lstrip=2)%(end)",
  59                                           filter->lines);
  60                         format->format = to_free;
  61                 } else
  62                         format->format = "%(refname:lstrip=2)";
  63         }
  64
  65         if (verify_ref_format(format))
  66                 die(_("unable to parse format string"));
  67         filter->with_commit_tag_algo = 1;
  68         filter_refs(&array, filter, FILTER_REFS_TAGS);
  69         ref_array_sort(sorting, &array);
  70
  71         for (i = 0; i < array.nr; i++) {
  72                 strbuf_reset(&output);
  73                 strbuf_reset(&err);
  74                 if (format_ref_array_item(array.items[i], format, &output, &err))
  75                         die("%s", err.buf);
  76                 fwrite(output.buf, 1, output.len, stdout);
  77                 putchar('\n');
  78         }
  79
  80         strbuf_release(&err);
  81         strbuf_release(&output);
  82         ref_array_clear(&array);
  83         free(to_free);
  84
  85         return 0;
  86 }
  87
  88 typedef int (*each_tag_name_fn)(const char *name, const char *ref,
  89                                 const struct object_id *oid, void *cb_data);
  90
  91 static int for_each_tag_name(const char **argv, each_tag_name_fn fn,
  92                              void *cb_data)
  93 {
  94         const char **p;
  95         struct strbuf ref = STRBUF_INIT;
  96         int had_error = 0;
  97         struct object_id oid;
  98
  99         for (p = argv; *p; p++) {
 100                 strbuf_reset(&ref);
 101                 strbuf_addf(&ref, "refs/tags/%s", *p);
 102                 if (read_ref(ref.buf, &oid)) {
 103                         error(_("tag '%s' not found."), *p);
 104                         had_error = 1;
 105                         continue;
 106                 }
 107                 if (fn(*p, ref.buf, &oid, cb_data))
 108                         had_error = 1;
 109         }
 110         strbuf_release(&ref);
 111         return had_error;
 112 }
 113
 114 static int collect_tags(const char *name, const char *ref,
 115                         const struct object_id *oid, void *cb_data)
 116 {
 117         struct string_list *ref_list = cb_data;
 118
 119         string_list_append(ref_list, ref);
 120         ref_list->items[ref_list->nr - 1].util = oiddup(oid);
 121         return 0;
 122 }
 123
 124 static int delete_tags(const char **argv)
 125 {
 126         int result;
 127         struct string_list refs_to_delete = STRING_LIST_INIT_DUP;
 128         struct string_list_item *item;
 129
 130         result = for_each_tag_name(argv, collect_tags, (void *)&refs_to_delete);
 131         if (delete_refs(NULL, &refs_to_delete, REF_NO_DEREF))
 132                 result = 1;
 133
 134         for_each_string_list_item(item, &refs_to_delete) {
 135                 const char *name = item->string;
 136                 struct object_id *oid = item->util;
 137                 if (!ref_exists(name))
 138                         printf(_("Deleted tag '%s' (was %s)\n"),
 139                                 item->string + 10,
 140                                 find_unique_abbrev(oid, DEFAULT_ABBREV));
 141
 142                 free(oid);
 143         }
 144         string_list_clear(&refs_to_delete, 0);
 145         return result;
 146 }
 147
 148 static int verify_tag(const char *name, const char *ref,
 149                       const struct object_id *oid, void *cb_data)
 150 {
 151         int flags;
 152         struct ref_format *format = cb_data;
 153         flags = GPG_VERIFY_VERBOSE;
 154
 155         if (format->format)
 156                 flags = GPG_VERIFY_OMIT_STATUS;
 157
 158         if (gpg_verify_tag(oid, name, flags))
 159                 return -1;
 160
 161         if (format->format)
 162                 pretty_print_ref(name, oid, format);
 163
 164         return 0;
 165 }
 166
 167 static int do_sign(struct strbuf *buffer)
 168 {
 169         return sign_buffer(buffer, buffer, get_signing_key());
 170 }
 171
 172 static const char tag_template[] =
 173         N_("\nWrite a message for tag:\n  %s\n"
 174         "Lines starting with '%c' will be ignored.\n");
 175
 176 static const char tag_template_nocleanup[] =
 177         N_("\nWrite a message for tag:\n  %s\n"
 178         "Lines starting with '%c' will be kept; you may remove them"
 179         " yourself if you want to.\n");
 180
 181 static int git_tag_config(const char *var, const char *value, void *cb)
 182 {
 183         int status;
 184
 185         if (!strcmp(var, "tag.gpgsign")) {
 186                 config_sign_tag = git_config_bool(var, value);
 187                 return 0;
 188         }
 189
 190         if (!strcmp(var, "tag.sort")) {
 191                 if (!value)
 192                         return config_error_nonbool(var);
 193                 string_list_append(cb, value);
 194                 return 0;
 195         }
 196
 197         status = git_gpg_config(var, value, cb);
 198         if (status)
 199                 return status;
 200         if (!strcmp(var, "tag.forcesignannotated")) {
 201                 force_sign_annotate = git_config_bool(var, value);
 202                 return 0;
 203         }
 204
 205         if (starts_with(var, "column."))
 206                 return git_column_config(var, value, "tag", &colopts);
 207         return git_color_default_config(var, value, cb);
 208 }
 209
 210 static void write_tag_body(int fd, const struct object_id *oid)
 211 {
 212         unsigned long size;
 213         enum object_type type;
 214         char *buf, *sp, *orig;
 215         struct strbuf payload = STRBUF_INIT;
 216         struct strbuf signature = STRBUF_INIT;
 217
 218         orig = buf = read_object_file(oid, &type, &size);
 219         if (!buf)
 220                 return;
 221         if (parse_signature(buf, size, &payload, &signature)) {
 222                 buf = payload.buf;
 223                 size = payload.len;
 224         }
 225         /* skip header */
 226         sp = strstr(buf, "\n\n");
 227
 228         if (!sp || !size || type != OBJ_TAG) {
 229                 free(buf);
 230                 return;
 231         }
 232         sp += 2; /* skip the 2 LFs */
 233         write_or_die(fd, sp, buf + size - sp);
 234
 235         free(orig);
 236         strbuf_release(&payload);
 237         strbuf_release(&signature);
 238 }
 239
 240 static int build_tag_object(struct strbuf *buf, int sign, struct object_id *result)
 241 {
 242         if (sign && do_sign(buf) < 0)
 243                 return error(_("unable to sign the tag"));
 244         if (write_object_file(buf->buf, buf->len, OBJ_TAG, result) < 0)
 245                 return error(_("unable to write tag file"));
 246         return 0;
 247 }
 248
 249 struct create_tag_options {
 250         unsigned int message_given:1;
 251         unsigned int use_editor:1;
 252         unsigned int sign;
 253         enum {
 254                 CLEANUP_NONE,
 255                 CLEANUP_SPACE,
 256                 CLEANUP_ALL
 257         } cleanup_mode;
 258 };
 259
 260 static const char message_advice_nested_tag[] =
 261         N_("You have created a nested tag. The object referred to by your new tag is\n"
 262            "already a tag. If you meant to tag the object that it points to, use:\n"
 263            "\n"
 264            "\tgit tag -f %s %s^{}");
 265
 266 static void create_tag(const struct object_id *object, const char *object_ref,
 267                        const char *tag,
 268                        struct strbuf *buf, struct create_tag_options *opt,
 269                        struct object_id *prev, struct object_id *result)
 270 {
 271         enum object_type type;
 272         struct strbuf header = STRBUF_INIT;
 273         char *path = NULL;
 274
 275         type = oid_object_info(the_repository, object, NULL);
 276         if (type <= OBJ_NONE)
 277                 die(_("bad object type."));
 278
 279         if (type == OBJ_TAG)
 280                 advise_if_enabled(ADVICE_NESTED_TAG, _(message_advice_nested_tag),
 281                                   tag, object_ref);
 282
 283         strbuf_addf(&header,
 284                     "object %s\n"
 285                     "type %s\n"
 286                     "tag %s\n"
 287                     "tagger %s\n\n",
 288                     oid_to_hex(object),
 289                     type_name(type),
 290                     tag,
 291                     git_committer_info(IDENT_STRICT));
 292
 293         if (!opt->message_given || opt->use_editor) {
 294                 int fd;
 295
 296                 /* write the template message before editing: */
 297                 path = git_pathdup("TAG_EDITMSG");
 298                 fd = xopen(path, O_CREAT | O_TRUNC | O_WRONLY, 0600);
 299
 300                 if (opt->message_given) {
 301                         write_or_die(fd, buf->buf, buf->len);
 302                         strbuf_reset(buf);
 303                 } else if (!is_null_oid(prev)) {
 304                         write_tag_body(fd, prev);
 305                 } else {
 306                         struct strbuf buf = STRBUF_INIT;
 307                         strbuf_addch(&buf, '\n');
 308                         if (opt->cleanup_mode == CLEANUP_ALL)
 309                                 strbuf_commented_addf(&buf, _(tag_template), tag, comment_line_char);
 310                         else
 311                                 strbuf_commented_addf(&buf, _(tag_template_nocleanup), tag, comment_line_char);
 312                         write_or_die(fd, buf.buf, buf.len);
 313                         strbuf_release(&buf);
 314                 }
 315                 close(fd);
 316
 317                 if (launch_editor(path, buf, NULL)) {
 318                         fprintf(stderr,
 319                         _("Please supply the message using either -m or -F option.\n"));
 320                         exit(1);
 321                 }
 322         }
 323
 324         if (opt->cleanup_mode != CLEANUP_NONE)
 325                 strbuf_stripspace(buf, opt->cleanup_mode == CLEANUP_ALL);
 326
 327         if (!opt->message_given && !buf->len)
 328                 die(_("no tag message?"));
 329
 330         strbuf_insert(buf, 0, header.buf, header.len);
 331         strbuf_release(&header);
 332
 333         if (build_tag_object(buf, opt->sign, result) < 0) {
 334                 if (path)
 335                         fprintf(stderr, _("The tag message has been left in %s\n"),
 336                                 path);
 337                 exit(128);
 338         }
 339         if (path) {
 340                 unlink_or_warn(path);
 341                 free(path);
 342         }
 343 }
 344
 345 static void create_reflog_msg(const struct object_id *oid, struct strbuf *sb)
 346 {
 347         enum object_type type;
 348         struct commit *c;
 349         char *buf;
 350         unsigned long size;
 351         int subject_len = 0;
 352         const char *subject_start;
 353
 354         char *rla = getenv("GIT_REFLOG_ACTION");
 355         if (rla) {
 356                 strbuf_addstr(sb, rla);
 357         } else {
 358                 strbuf_addstr(sb, "tag: tagging ");
 359                 strbuf_add_unique_abbrev(sb, oid, DEFAULT_ABBREV);
 360         }
 361
 362         strbuf_addstr(sb, " (");
 363         type = oid_object_info(the_repository, oid, NULL);
 364         switch (type) {
 365         default:
 366                 strbuf_addstr(sb, "object of unknown type");
 367                 break;
 368         case OBJ_COMMIT:
 369                 if ((buf = read_object_file(oid, &type, &size))) {
 370                         subject_len = find_commit_subject(buf, &subject_start);
 371                         strbuf_insert(sb, sb->len, subject_start, subject_len);
 372                 } else {
 373                         strbuf_addstr(sb, "commit object");
 374                 }
 375                 free(buf);
 376
 377                 if ((c = lookup_commit_reference(the_repository, oid)))
 378                         strbuf_addf(sb, ", %s", show_date(c->date, 0, DATE_MODE(SHORT)));
 379                 break;
 380         case OBJ_TREE:
 381                 strbuf_addstr(sb, "tree object");
 382                 break;
 383         case OBJ_BLOB:
 384                 strbuf_addstr(sb, "blob object");
 385                 break;
 386         case OBJ_TAG:
 387                 strbuf_addstr(sb, "other tag object");
 388                 break;
 389         }
 390         strbuf_addch(sb, ')');
 391 }
 392
 393 struct msg_arg {
 394         int given;
 395         struct strbuf buf;
 396 };
 397
 398 static int parse_msg_arg(const struct option *opt, const char *arg, int unset)
 399 {
 400         struct msg_arg *msg = opt->value;
 401
 402         BUG_ON_OPT_NEG(unset);
 403
 404         if (!arg)
 405                 return -1;
 406         if (msg->buf.len)
 407                 strbuf_addstr(&(msg->buf), "\n\n");
 408         strbuf_addstr(&(msg->buf), arg);
 409         msg->given = 1;
 410         return 0;
 411 }
 412
 413 static int strbuf_check_tag_ref(struct strbuf *sb, const char *name)
 414 {
 415         if (name[0] == '-')
 416                 return -1;
 417
 418         strbuf_reset(sb);
 419         strbuf_addf(sb, "refs/tags/%s", name);
 420
 421         return check_refname_format(sb->buf, 0);
 422 }
 423
 424 int cmd_tag(int argc, const char **argv, const char *prefix)
 425 {
 426         struct strbuf buf = STRBUF_INIT;
 427         struct strbuf ref = STRBUF_INIT;
 428         struct strbuf reflog_msg = STRBUF_INIT;
 429         struct object_id object, prev;
 430         const char *object_ref, *tag;
 431         struct create_tag_options opt;
 432         char *cleanup_arg = NULL;
 433         int create_reflog = 0;
 434         int annotate = 0, force = 0;
 435         int cmdmode = 0, create_tag_object = 0;
 436         const char *msgfile = NULL, *keyid = NULL;
 437         struct msg_arg msg = { .buf = STRBUF_INIT };
 438         struct ref_transaction *transaction;
 439         struct strbuf err = STRBUF_INIT;
 440         struct ref_filter filter;
 441         struct ref_sorting *sorting;
 442         struct string_list sorting_options = STRING_LIST_INIT_DUP;
 443         struct ref_format format = REF_FORMAT_INIT;
 444         int icase = 0;
 445         int edit_flag = 0;
 446         struct option options[] = {
 447                 OPT_CMDMODE('l', "list", &cmdmode, N_("list tag names"), 'l'),
 448                 { OPTION_INTEGER, 'n', NULL, &filter.lines, N_("n"),
 449                                 N_("print <n> lines of each tag message"),
 450                                 PARSE_OPT_OPTARG, NULL, 1 },
 451                 OPT_CMDMODE('d', "delete", &cmdmode, N_("delete tags"), 'd'),
 452                 OPT_CMDMODE('v', "verify", &cmdmode, N_("verify tags"), 'v'),
 453
 454                 OPT_GROUP(N_("Tag creation options")),
 455                 OPT_BOOL('a', "annotate", &annotate,
 456                                         N_("annotated tag, needs a message")),
 457                 OPT_CALLBACK_F('m', "message", &msg, N_("message"),
 458                                N_("tag message"), PARSE_OPT_NONEG, parse_msg_arg),
 459                 OPT_FILENAME('F', "file", &msgfile, N_("read message from file")),
 460                 OPT_BOOL('e', "edit", &edit_flag, N_("force edit of tag message")),
 461                 OPT_BOOL('s', "sign", &opt.sign, N_("annotated and GPG-signed tag")),
 462                 OPT_CLEANUP(&cleanup_arg),
 463                 OPT_STRING('u', "local-user", &keyid, N_("key-id"),
 464                                         N_("use another key to sign the tag")),
 465                 OPT__FORCE(&force, N_("replace the tag if exists"), 0),
 466                 OPT_BOOL(0, "create-reflog", &create_reflog, N_("create a reflog")),
 467
 468                 OPT_GROUP(N_("Tag listing options")),
 469                 OPT_COLUMN(0, "column", &colopts, N_("show tag list in columns")),
 470                 OPT_CONTAINS(&filter.with_commit, N_("print only tags that contain the commit")),
 471                 OPT_NO_CONTAINS(&filter.no_commit, N_("print only tags that don't contain the commit")),
 472                 OPT_WITH(&filter.with_commit, N_("print only tags that contain the commit")),
 473                 OPT_WITHOUT(&filter.no_commit, N_("print only tags that don't contain the commit")),
 474                 OPT_MERGED(&filter, N_("print only tags that are merged")),
 475                 OPT_NO_MERGED(&filter, N_("print only tags that are not merged")),
 476                 OPT_REF_SORT(&sorting_options),
 477                 {
 478                         OPTION_CALLBACK, 0, "points-at", &filter.points_at, N_("object"),
 479                         N_("print only tags of the object"), PARSE_OPT_LASTARG_DEFAULT,
 480                         parse_opt_object_name, (intptr_t) "HEAD"
 481                 },
 482                 OPT_STRING(  0 , "format", &format.format, N_("format"),
 483                            N_("format to use for the output")),
 484                 OPT__COLOR(&format.use_color, N_("respect format colors")),
 485                 OPT_BOOL('i', "ignore-case", &icase, N_("sorting and filtering are case insensitive")),
 486                 OPT_END()
 487         };
 488         int ret = 0;
 489         const char *only_in_list = NULL;
 490
 491         setup_ref_filter_porcelain_msg();
 492
 493         git_config(git_tag_config, &sorting_options);
 494
 495         memset(&opt, 0, sizeof(opt));
 496         memset(&filter, 0, sizeof(filter));
 497         filter.lines = -1;
 498         opt.sign = -1;
 499
 500         argc = parse_options(argc, argv, prefix, options, git_tag_usage, 0);
 501
 502         if (!cmdmode) {
 503                 if (argc == 0)
 504                         cmdmode = 'l';
 505                 else if (filter.with_commit || filter.no_commit ||
 506                          filter.reachable_from || filter.unreachable_from ||
 507                          filter.points_at.nr || filter.lines != -1)
 508                         cmdmode = 'l';
 509         }
 510
 511         if (cmdmode == 'l')
 512                 setup_auto_pager("tag", 1);
 513
 514         if (opt.sign == -1)
 515                 opt.sign = cmdmode ? 0 : config_sign_tag > 0;
 516
 517         if (keyid) {
 518                 opt.sign = 1;
 519                 set_signing_key(keyid);
 520         }
 521         create_tag_object = (opt.sign || annotate || msg.given || msgfile);
 522
 523         if ((create_tag_object || force) && (cmdmode != 0))
 524                 usage_with_options(git_tag_usage, options);
 525
 526         finalize_colopts(&colopts, -1);
 527         if (cmdmode == 'l' && filter.lines != -1) {
 528                 if (explicitly_enable_column(colopts))
 529                         die(_("options '%s' and '%s' cannot be used together"), "--column", "-n");
 530                 colopts = 0;
 531         }
 532         sorting = ref_sorting_options(&sorting_options);
 533         ref_sorting_set_sort_flags_all(sorting, REF_SORTING_ICASE, icase);
 534         filter.ignore_case = icase;
 535         if (cmdmode == 'l') {
 536                 if (column_active(colopts)) {
 537                         struct column_options copts;
 538                         memset(&copts, 0, sizeof(copts));
 539                         copts.padding = 2;
 540                         run_column_filter(colopts, &copts);
 541                 }
 542                 filter.name_patterns = argv;
 543                 ret = list_tags(&filter, sorting, &format);
 544                 if (column_active(colopts))
 545                         stop_column_filter();
 546                 goto cleanup;
 547         }
 548         if (filter.lines != -1)
 549                 only_in_list = "-n";
 550         else if (filter.with_commit)
 551                 only_in_list = "--contains";
 552         else if (filter.no_commit)
 553                 only_in_list = "--no-contains";
 554         else if (filter.points_at.nr)
 555                 only_in_list = "--points-at";
 556         else if (filter.reachable_from)
 557                 only_in_list = "--merged";
 558         else if (filter.unreachable_from)
 559                 only_in_list = "--no-merged";
 560         if (only_in_list)
 561                 die(_("the '%s' option is only allowed in list mode"), only_in_list);
 562         if (cmdmode == 'd') {
 563                 ret = delete_tags(argv);
 564                 goto cleanup;
 565         }
 566         if (cmdmode == 'v') {
 567                 if (format.format && verify_ref_format(&format))
 568                         usage_with_options(git_tag_usage, options);
 569                 ret = for_each_tag_name(argv, verify_tag, &format);
 570                 goto cleanup;
 571         }
 572
 573         if (msg.given || msgfile) {
 574                 if (msg.given && msgfile)
 575                         die(_("options '%s' and '%s' cannot be used together"), "-F", "-m");
 576                 if (msg.given)
 577                         strbuf_addbuf(&buf, &(msg.buf));
 578                 else {
 579                         if (!strcmp(msgfile, "-")) {
 580                                 if (strbuf_read(&buf, 0, 1024) < 0)
 581                                         die_errno(_("cannot read '%s'"), msgfile);
 582                         } else {
 583                                 if (strbuf_read_file(&buf, msgfile, 1024) < 0)
 584                                         die_errno(_("could not open or read '%s'"),
 585                                                 msgfile);
 586                         }
 587                 }
 588         }
 589
 590         tag = argv[0];
 591
 592         object_ref = argc == 2 ? argv[1] : "HEAD";
 593         if (argc > 2)
 594                 die(_("too many arguments"));
 595
 596         if (get_oid(object_ref, &object))
 597                 die(_("Failed to resolve '%s' as a valid ref."), object_ref);
 598
 599         if (strbuf_check_tag_ref(&ref, tag))
 600                 die(_("'%s' is not a valid tag name."), tag);
 601
 602         if (read_ref(ref.buf, &prev))
 603                 oidclr(&prev);
 604         else if (!force)
 605                 die(_("tag '%s' already exists"), tag);
 606
 607         opt.message_given = msg.given || msgfile;
 608         opt.use_editor = edit_flag;
 609
 610         if (!cleanup_arg || !strcmp(cleanup_arg, "strip"))
 611                 opt.cleanup_mode = CLEANUP_ALL;
 612         else if (!strcmp(cleanup_arg, "verbatim"))
 613                 opt.cleanup_mode = CLEANUP_NONE;
 614         else if (!strcmp(cleanup_arg, "whitespace"))
 615                 opt.cleanup_mode = CLEANUP_SPACE;
 616         else
 617                 die(_("Invalid cleanup mode %s"), cleanup_arg);
 618
 619         create_reflog_msg(&object, &reflog_msg);
 620
 621         if (create_tag_object) {
 622                 if (force_sign_annotate && !annotate)
 623                         opt.sign = 1;
 624                 create_tag(&object, object_ref, tag, &buf, &opt, &prev, &object);
 625         }
 626
 627         transaction = ref_transaction_begin(&err);
 628         if (!transaction ||
 629             ref_transaction_update(transaction, ref.buf, &object, &prev,
 630                                    create_reflog ? REF_FORCE_CREATE_REFLOG : 0,
 631                                    reflog_msg.buf, &err) ||
 632             ref_transaction_commit(transaction, &err))
 633                 die("%s", err.buf);
 634         ref_transaction_free(transaction);
 635         if (force && !is_null_oid(&prev) && !oideq(&prev, &object))
 636                 printf(_("Updated tag '%s' (was %s)\n"), tag,
 637                        find_unique_abbrev(&prev, DEFAULT_ABBREV));
 638
 639 cleanup:
 640         ref_sorting_release(sorting);
 641         strbuf_release(&buf);
 642         strbuf_release(&ref);
 643         strbuf_release(&reflog_msg);
 644         strbuf_release(&msg.buf);
 645         strbuf_release(&err);
 646         return ret;
 647 }