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