builtin-commit.con commit grep docs: use AsciiDoc literals consistently (bfb8306)
   1/*
   2 * Builtin "git commit"
   3 *
   4 * Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>
   5 * Based on git-commit.sh by Junio C Hamano and Linus Torvalds
   6 */
   7
   8#include "cache.h"
   9#include "cache-tree.h"
  10#include "color.h"
  11#include "dir.h"
  12#include "builtin.h"
  13#include "diff.h"
  14#include "diffcore.h"
  15#include "commit.h"
  16#include "revision.h"
  17#include "wt-status.h"
  18#include "run-command.h"
  19#include "refs.h"
  20#include "log-tree.h"
  21#include "strbuf.h"
  22#include "utf8.h"
  23#include "parse-options.h"
  24#include "string-list.h"
  25#include "rerere.h"
  26#include "unpack-trees.h"
  27#include "quote.h"
  28
  29static const char * const builtin_commit_usage[] = {
  30        "git commit [options] [--] <filepattern>...",
  31        NULL
  32};
  33
  34static const char * const builtin_status_usage[] = {
  35        "git status [options] [--] <filepattern>...",
  36        NULL
  37};
  38
  39static const char implicit_ident_advice[] =
  40"Your name and email address were configured automatically based\n"
  41"on your username and hostname. Please check that they are accurate.\n"
  42"You can suppress this message by setting them explicitly:\n"
  43"\n"
  44"    git config --global user.name \"Your Name\"\n"
  45"    git config --global user.email you@example.com\n"
  46"\n"
  47"If the identity used for this commit is wrong, you can fix it with:\n"
  48"\n"
  49"    git commit --amend --author='Your Name <you@example.com>'\n";
  50
  51static unsigned char head_sha1[20];
  52
  53static char *use_message_buffer;
  54static const char commit_editmsg[] = "COMMIT_EDITMSG";
  55static struct lock_file index_lock; /* real index */
  56static struct lock_file false_lock; /* used only for partial commits */
  57static enum {
  58        COMMIT_AS_IS = 1,
  59        COMMIT_NORMAL,
  60        COMMIT_PARTIAL,
  61} commit_style;
  62
  63static const char *logfile, *force_author;
  64static const char *template_file;
  65static char *edit_message, *use_message;
  66static char *author_name, *author_email, *author_date;
  67static int all, edit_flag, also, interactive, only, amend, signoff;
  68static int quiet, verbose, no_verify, allow_empty, dry_run, renew_authorship;
  69static char *untracked_files_arg, *force_date;
  70/*
  71 * The default commit message cleanup mode will remove the lines
  72 * beginning with # (shell comments) and leading and trailing
  73 * whitespaces (empty lines or containing only whitespaces)
  74 * if editor is used, and only the whitespaces if the message
  75 * is specified explicitly.
  76 */
  77static enum {
  78        CLEANUP_SPACE,
  79        CLEANUP_NONE,
  80        CLEANUP_ALL,
  81} cleanup_mode;
  82static char *cleanup_arg;
  83
  84static int use_editor = 1, initial_commit, in_merge, include_status = 1;
  85static const char *only_include_assumed;
  86static struct strbuf message;
  87
  88static int null_termination;
  89static enum {
  90        STATUS_FORMAT_LONG,
  91        STATUS_FORMAT_SHORT,
  92        STATUS_FORMAT_PORCELAIN,
  93} status_format = STATUS_FORMAT_LONG;
  94
  95static int opt_parse_m(const struct option *opt, const char *arg, int unset)
  96{
  97        struct strbuf *buf = opt->value;
  98        if (unset)
  99                strbuf_setlen(buf, 0);
 100        else {
 101                strbuf_addstr(buf, arg);
 102                strbuf_addstr(buf, "\n\n");
 103        }
 104        return 0;
 105}
 106
 107static struct option builtin_commit_options[] = {
 108        OPT__QUIET(&quiet),
 109        OPT__VERBOSE(&verbose),
 110
 111        OPT_GROUP("Commit message options"),
 112        OPT_FILENAME('F', "file", &logfile, "read log from file"),
 113        OPT_STRING(0, "author", &force_author, "AUTHOR", "override author for commit"),
 114        OPT_STRING(0, "date", &force_date, "DATE", "override date for commit"),
 115        OPT_CALLBACK('m', "message", &message, "MESSAGE", "specify commit message", opt_parse_m),
 116        OPT_STRING('c', "reedit-message", &edit_message, "COMMIT", "reuse and edit message from specified commit"),
 117        OPT_STRING('C', "reuse-message", &use_message, "COMMIT", "reuse message from specified commit"),
 118        OPT_BOOLEAN(0, "reset-author", &renew_authorship, "the commit is authored by me now (used with -C-c/--amend)"),
 119        OPT_BOOLEAN('s', "signoff", &signoff, "add Signed-off-by:"),
 120        OPT_FILENAME('t', "template", &template_file, "use specified template file"),
 121        OPT_BOOLEAN('e', "edit", &edit_flag, "force edit of commit"),
 122        OPT_STRING(0, "cleanup", &cleanup_arg, "default", "how to strip spaces and #comments from message"),
 123        OPT_BOOLEAN(0, "status", &include_status, "include status in commit message template"),
 124        /* end commit message options */
 125
 126        OPT_GROUP("Commit contents options"),
 127        OPT_BOOLEAN('a', "all", &all, "commit all changed files"),
 128        OPT_BOOLEAN('i', "include", &also, "add specified files to index for commit"),
 129        OPT_BOOLEAN(0, "interactive", &interactive, "interactively add files"),
 130        OPT_BOOLEAN('o', "only", &only, "commit only specified files"),
 131        OPT_BOOLEAN('n', "no-verify", &no_verify, "bypass pre-commit hook"),
 132        OPT_BOOLEAN(0, "dry-run", &dry_run, "show what would be committed"),
 133        OPT_SET_INT(0, "short", &status_format, "show status concisely",
 134                    STATUS_FORMAT_SHORT),
 135        OPT_SET_INT(0, "porcelain", &status_format,
 136                    "show porcelain output format", STATUS_FORMAT_PORCELAIN),
 137        OPT_BOOLEAN('z', "null", &null_termination,
 138                    "terminate entries with NUL"),
 139        OPT_BOOLEAN(0, "amend", &amend, "amend previous commit"),
 140        { OPTION_STRING, 'u', "untracked-files", &untracked_files_arg, "mode", "show untracked files, optional modes: all, normal, no. (Default: all)", PARSE_OPT_OPTARG, NULL, (intptr_t)"all" },
 141        OPT_BOOLEAN(0, "allow-empty", &allow_empty, "ok to record an empty change"),
 142        /* end commit contents options */
 143
 144        OPT_END()
 145};
 146
 147static void rollback_index_files(void)
 148{
 149        switch (commit_style) {
 150        case COMMIT_AS_IS:
 151                break; /* nothing to do */
 152        case COMMIT_NORMAL:
 153                rollback_lock_file(&index_lock);
 154                break;
 155        case COMMIT_PARTIAL:
 156                rollback_lock_file(&index_lock);
 157                rollback_lock_file(&false_lock);
 158                break;
 159        }
 160}
 161
 162static int commit_index_files(void)
 163{
 164        int err = 0;
 165
 166        switch (commit_style) {
 167        case COMMIT_AS_IS:
 168                break; /* nothing to do */
 169        case COMMIT_NORMAL:
 170                err = commit_lock_file(&index_lock);
 171                break;
 172        case COMMIT_PARTIAL:
 173                err = commit_lock_file(&index_lock);
 174                rollback_lock_file(&false_lock);
 175                break;
 176        }
 177
 178        return err;
 179}
 180
 181/*
 182 * Take a union of paths in the index and the named tree (typically, "HEAD"),
 183 * and return the paths that match the given pattern in list.
 184 */
 185static int list_paths(struct string_list *list, const char *with_tree,
 186                      const char *prefix, const char **pattern)
 187{
 188        int i;
 189        char *m;
 190
 191        for (i = 0; pattern[i]; i++)
 192                ;
 193        m = xcalloc(1, i);
 194
 195        if (with_tree)
 196                overlay_tree_on_cache(with_tree, prefix);
 197
 198        for (i = 0; i < active_nr; i++) {
 199                struct cache_entry *ce = active_cache[i];
 200                struct string_list_item *item;
 201
 202                if (ce->ce_flags & CE_UPDATE)
 203                        continue;
 204                if (!match_pathspec(pattern, ce->name, ce_namelen(ce), 0, m))
 205                        continue;
 206                item = string_list_insert(ce->name, list);
 207                if (ce_skip_worktree(ce))
 208                        item->util = item; /* better a valid pointer than a fake one */
 209        }
 210
 211        return report_path_error(m, pattern, prefix ? strlen(prefix) : 0);
 212}
 213
 214static void add_remove_files(struct string_list *list)
 215{
 216        int i;
 217        for (i = 0; i < list->nr; i++) {
 218                struct stat st;
 219                struct string_list_item *p = &(list->items[i]);
 220
 221                /* p->util is skip-worktree */
 222                if (p->util)
 223                        continue;
 224
 225                if (!lstat(p->string, &st)) {
 226                        if (add_to_cache(p->string, &st, 0))
 227                                die("updating files failed");
 228                } else
 229                        remove_file_from_cache(p->string);
 230        }
 231}
 232
 233static void create_base_index(void)
 234{
 235        struct tree *tree;
 236        struct unpack_trees_options opts;
 237        struct tree_desc t;
 238
 239        if (initial_commit) {
 240                discard_cache();
 241                return;
 242        }
 243
 244        memset(&opts, 0, sizeof(opts));
 245        opts.head_idx = 1;
 246        opts.index_only = 1;
 247        opts.merge = 1;
 248        opts.src_index = &the_index;
 249        opts.dst_index = &the_index;
 250
 251        opts.fn = oneway_merge;
 252        tree = parse_tree_indirect(head_sha1);
 253        if (!tree)
 254                die("failed to unpack HEAD tree object");
 255        parse_tree(tree);
 256        init_tree_desc(&t, tree->buffer, tree->size);
 257        if (unpack_trees(1, &t, &opts))
 258                exit(128); /* We've already reported the error, finish dying */
 259}
 260
 261static void refresh_cache_or_die(int refresh_flags)
 262{
 263        /*
 264         * refresh_flags contains REFRESH_QUIET, so the only errors
 265         * are for unmerged entries.
 266         */
 267        if (refresh_cache(refresh_flags | REFRESH_IN_PORCELAIN))
 268                die_resolve_conflict("commit");
 269}
 270
 271static char *prepare_index(int argc, const char **argv, const char *prefix, int is_status)
 272{
 273        int fd;
 274        struct string_list partial;
 275        const char **pathspec = NULL;
 276        int refresh_flags = REFRESH_QUIET;
 277
 278        if (is_status)
 279                refresh_flags |= REFRESH_UNMERGED;
 280        if (interactive) {
 281                if (interactive_add(argc, argv, prefix) != 0)
 282                        die("interactive add failed");
 283                if (read_cache_preload(NULL) < 0)
 284                        die("index file corrupt");
 285                commit_style = COMMIT_AS_IS;
 286                return get_index_file();
 287        }
 288
 289        if (*argv)
 290                pathspec = get_pathspec(prefix, argv);
 291
 292        if (read_cache_preload(pathspec) < 0)
 293                die("index file corrupt");
 294
 295        /*
 296         * Non partial, non as-is commit.
 297         *
 298         * (1) get the real index;
 299         * (2) update the_index as necessary;
 300         * (3) write the_index out to the real index (still locked);
 301         * (4) return the name of the locked index file.
 302         *
 303         * The caller should run hooks on the locked real index, and
 304         * (A) if all goes well, commit the real index;
 305         * (B) on failure, rollback the real index.
 306         */
 307        if (all || (also && pathspec && *pathspec)) {
 308                int fd = hold_locked_index(&index_lock, 1);
 309                add_files_to_cache(also ? prefix : NULL, pathspec, 0);
 310                refresh_cache_or_die(refresh_flags);
 311                if (write_cache(fd, active_cache, active_nr) ||
 312                    close_lock_file(&index_lock))
 313                        die("unable to write new_index file");
 314                commit_style = COMMIT_NORMAL;
 315                return index_lock.filename;
 316        }
 317
 318        /*
 319         * As-is commit.
 320         *
 321         * (1) return the name of the real index file.
 322         *
 323         * The caller should run hooks on the real index, and run
 324         * hooks on the real index, and create commit from the_index.
 325         * We still need to refresh the index here.
 326         */
 327        if (!pathspec || !*pathspec) {
 328                fd = hold_locked_index(&index_lock, 1);
 329                refresh_cache_or_die(refresh_flags);
 330                if (write_cache(fd, active_cache, active_nr) ||
 331                    commit_locked_index(&index_lock))
 332                        die("unable to write new_index file");
 333                commit_style = COMMIT_AS_IS;
 334                return get_index_file();
 335        }
 336
 337        /*
 338         * A partial commit.
 339         *
 340         * (0) find the set of affected paths;
 341         * (1) get lock on the real index file;
 342         * (2) update the_index with the given paths;
 343         * (3) write the_index out to the real index (still locked);
 344         * (4) get lock on the false index file;
 345         * (5) reset the_index from HEAD;
 346         * (6) update the_index the same way as (2);
 347         * (7) write the_index out to the false index file;
 348         * (8) return the name of the false index file (still locked);
 349         *
 350         * The caller should run hooks on the locked false index, and
 351         * create commit from it.  Then
 352         * (A) if all goes well, commit the real index;
 353         * (B) on failure, rollback the real index;
 354         * In either case, rollback the false index.
 355         */
 356        commit_style = COMMIT_PARTIAL;
 357
 358        if (in_merge)
 359                die("cannot do a partial commit during a merge.");
 360
 361        memset(&partial, 0, sizeof(partial));
 362        partial.strdup_strings = 1;
 363        if (list_paths(&partial, initial_commit ? NULL : "HEAD", prefix, pathspec))
 364                exit(1);
 365
 366        discard_cache();
 367        if (read_cache() < 0)
 368                die("cannot read the index");
 369
 370        fd = hold_locked_index(&index_lock, 1);
 371        add_remove_files(&partial);
 372        refresh_cache(REFRESH_QUIET);
 373        if (write_cache(fd, active_cache, active_nr) ||
 374            close_lock_file(&index_lock))
 375                die("unable to write new_index file");
 376
 377        fd = hold_lock_file_for_update(&false_lock,
 378                                       git_path("next-index-%"PRIuMAX,
 379                                                (uintmax_t) getpid()),
 380                                       LOCK_DIE_ON_ERROR);
 381
 382        create_base_index();
 383        add_remove_files(&partial);
 384        refresh_cache(REFRESH_QUIET);
 385
 386        if (write_cache(fd, active_cache, active_nr) ||
 387            close_lock_file(&false_lock))
 388                die("unable to write temporary index file");
 389
 390        discard_cache();
 391        read_cache_from(false_lock.filename);
 392
 393        return false_lock.filename;
 394}
 395
 396static int run_status(FILE *fp, const char *index_file, const char *prefix, int nowarn,
 397                      struct wt_status *s)
 398{
 399        unsigned char sha1[20];
 400
 401        if (s->relative_paths)
 402                s->prefix = prefix;
 403
 404        if (amend) {
 405                s->amend = 1;
 406                s->reference = "HEAD^1";
 407        }
 408        s->verbose = verbose;
 409        s->index_file = index_file;
 410        s->fp = fp;
 411        s->nowarn = nowarn;
 412        s->is_initial = get_sha1(s->reference, sha1) ? 1 : 0;
 413
 414        wt_status_collect(s);
 415
 416        switch (status_format) {
 417        case STATUS_FORMAT_SHORT:
 418                wt_shortstatus_print(s, null_termination);
 419                break;
 420        case STATUS_FORMAT_PORCELAIN:
 421                wt_porcelain_print(s, null_termination);
 422                break;
 423        case STATUS_FORMAT_LONG:
 424                wt_status_print(s);
 425                break;
 426        }
 427
 428        return s->commitable;
 429}
 430
 431static int is_a_merge(const unsigned char *sha1)
 432{
 433        struct commit *commit = lookup_commit(sha1);
 434        if (!commit || parse_commit(commit))
 435                die("could not parse HEAD commit");
 436        return !!(commit->parents && commit->parents->next);
 437}
 438
 439static const char sign_off_header[] = "Signed-off-by: ";
 440
 441static void determine_author_info(void)
 442{
 443        char *name, *email, *date;
 444
 445        name = getenv("GIT_AUTHOR_NAME");
 446        email = getenv("GIT_AUTHOR_EMAIL");
 447        date = getenv("GIT_AUTHOR_DATE");
 448
 449        if (use_message && !renew_authorship) {
 450                const char *a, *lb, *rb, *eol;
 451
 452                a = strstr(use_message_buffer, "\nauthor ");
 453                if (!a)
 454                        die("invalid commit: %s", use_message);
 455
 456                lb = strstr(a + 8, " <");
 457                rb = strstr(a + 8, "> ");
 458                eol = strchr(a + 8, '\n');
 459                if (!lb || !rb || !eol)
 460                        die("invalid commit: %s", use_message);
 461
 462                name = xstrndup(a + 8, lb - (a + 8));
 463                email = xstrndup(lb + 2, rb - (lb + 2));
 464                date = xstrndup(rb + 2, eol - (rb + 2));
 465        }
 466
 467        if (force_author) {
 468                const char *lb = strstr(force_author, " <");
 469                const char *rb = strchr(force_author, '>');
 470
 471                if (!lb || !rb)
 472                        die("malformed --author parameter");
 473                name = xstrndup(force_author, lb - force_author);
 474                email = xstrndup(lb + 2, rb - (lb + 2));
 475        }
 476
 477        if (force_date)
 478                date = force_date;
 479
 480        author_name = name;
 481        author_email = email;
 482        author_date = date;
 483}
 484
 485static int ends_rfc2822_footer(struct strbuf *sb)
 486{
 487        int ch;
 488        int hit = 0;
 489        int i, j, k;
 490        int len = sb->len;
 491        int first = 1;
 492        const char *buf = sb->buf;
 493
 494        for (i = len - 1; i > 0; i--) {
 495                if (hit && buf[i] == '\n')
 496                        break;
 497                hit = (buf[i] == '\n');
 498        }
 499
 500        while (i < len - 1 && buf[i] == '\n')
 501                i++;
 502
 503        for (; i < len; i = k) {
 504                for (k = i; k < len && buf[k] != '\n'; k++)
 505                        ; /* do nothing */
 506                k++;
 507
 508                if ((buf[k] == ' ' || buf[k] == '\t') && !first)
 509                        continue;
 510
 511                first = 0;
 512
 513                for (j = 0; i + j < len; j++) {
 514                        ch = buf[i + j];
 515                        if (ch == ':')
 516                                break;
 517                        if (isalnum(ch) ||
 518                            (ch == '-'))
 519                                continue;
 520                        return 0;
 521                }
 522        }
 523        return 1;
 524}
 525
 526static int prepare_to_commit(const char *index_file, const char *prefix,
 527                             struct wt_status *s)
 528{
 529        struct stat statbuf;
 530        int commitable, saved_color_setting;
 531        struct strbuf sb = STRBUF_INIT;
 532        char *buffer;
 533        FILE *fp;
 534        const char *hook_arg1 = NULL;
 535        const char *hook_arg2 = NULL;
 536        int ident_shown = 0;
 537
 538        if (!no_verify && run_hook(index_file, "pre-commit", NULL))
 539                return 0;
 540
 541        if (message.len) {
 542                strbuf_addbuf(&sb, &message);
 543                hook_arg1 = "message";
 544        } else if (logfile && !strcmp(logfile, "-")) {
 545                if (isatty(0))
 546                        fprintf(stderr, "(reading log message from standard input)\n");
 547                if (strbuf_read(&sb, 0, 0) < 0)
 548                        die_errno("could not read log from standard input");
 549                hook_arg1 = "message";
 550        } else if (logfile) {
 551                if (strbuf_read_file(&sb, logfile, 0) < 0)
 552                        die_errno("could not read log file '%s'",
 553                                  logfile);
 554                hook_arg1 = "message";
 555        } else if (use_message) {
 556                buffer = strstr(use_message_buffer, "\n\n");
 557                if (!buffer || buffer[2] == '\0')
 558                        die("commit has empty message");
 559                strbuf_add(&sb, buffer + 2, strlen(buffer + 2));
 560                hook_arg1 = "commit";
 561                hook_arg2 = use_message;
 562        } else if (!stat(git_path("MERGE_MSG"), &statbuf)) {
 563                if (strbuf_read_file(&sb, git_path("MERGE_MSG"), 0) < 0)
 564                        die_errno("could not read MERGE_MSG");
 565                hook_arg1 = "merge";
 566        } else if (!stat(git_path("SQUASH_MSG"), &statbuf)) {
 567                if (strbuf_read_file(&sb, git_path("SQUASH_MSG"), 0) < 0)
 568                        die_errno("could not read SQUASH_MSG");
 569                hook_arg1 = "squash";
 570        } else if (template_file && !stat(template_file, &statbuf)) {
 571                if (strbuf_read_file(&sb, template_file, 0) < 0)
 572                        die_errno("could not read '%s'", template_file);
 573                hook_arg1 = "template";
 574        }
 575
 576        /*
 577         * This final case does not modify the template message,
 578         * it just sets the argument to the prepare-commit-msg hook.
 579         */
 580        else if (in_merge)
 581                hook_arg1 = "merge";
 582
 583        fp = fopen(git_path(commit_editmsg), "w");
 584        if (fp == NULL)
 585                die_errno("could not open '%s'", git_path(commit_editmsg));
 586
 587        if (cleanup_mode != CLEANUP_NONE)
 588                stripspace(&sb, 0);
 589
 590        if (signoff) {
 591                struct strbuf sob = STRBUF_INIT;
 592                int i;
 593
 594                strbuf_addstr(&sob, sign_off_header);
 595                strbuf_addstr(&sob, fmt_name(getenv("GIT_COMMITTER_NAME"),
 596                                             getenv("GIT_COMMITTER_EMAIL")));
 597                strbuf_addch(&sob, '\n');
 598                for (i = sb.len - 1; i > 0 && sb.buf[i - 1] != '\n'; i--)
 599                        ; /* do nothing */
 600                if (prefixcmp(sb.buf + i, sob.buf)) {
 601                        if (!i || !ends_rfc2822_footer(&sb))
 602                                strbuf_addch(&sb, '\n');
 603                        strbuf_addbuf(&sb, &sob);
 604                }
 605                strbuf_release(&sob);
 606        }
 607
 608        if (fwrite(sb.buf, 1, sb.len, fp) < sb.len)
 609                die_errno("could not write commit template");
 610
 611        strbuf_release(&sb);
 612
 613        determine_author_info();
 614
 615        /* This checks if committer ident is explicitly given */
 616        git_committer_info(0);
 617        if (use_editor && include_status) {
 618                char *author_ident;
 619                const char *committer_ident;
 620
 621                if (in_merge)
 622                        fprintf(fp,
 623                                "#\n"
 624                                "# It looks like you may be committing a MERGE.\n"
 625                                "# If this is not correct, please remove the file\n"
 626                                "#      %s\n"
 627                                "# and try again.\n"
 628                                "#\n",
 629                                git_path("MERGE_HEAD"));
 630
 631                fprintf(fp,
 632                        "\n"
 633                        "# Please enter the commit message for your changes.");
 634                if (cleanup_mode == CLEANUP_ALL)
 635                        fprintf(fp,
 636                                " Lines starting\n"
 637                                "# with '#' will be ignored, and an empty"
 638                                " message aborts the commit.\n");
 639                else /* CLEANUP_SPACE, that is. */
 640                        fprintf(fp,
 641                                " Lines starting\n"
 642                                "# with '#' will be kept; you may remove them"
 643                                " yourself if you want to.\n"
 644                                "# An empty message aborts the commit.\n");
 645                if (only_include_assumed)
 646                        fprintf(fp, "# %s\n", only_include_assumed);
 647
 648                author_ident = xstrdup(fmt_name(author_name, author_email));
 649                committer_ident = fmt_name(getenv("GIT_COMMITTER_NAME"),
 650                                           getenv("GIT_COMMITTER_EMAIL"));
 651                if (strcmp(author_ident, committer_ident))
 652                        fprintf(fp,
 653                                "%s"
 654                                "# Author:    %s\n",
 655                                ident_shown++ ? "" : "#\n",
 656                                author_ident);
 657                free(author_ident);
 658
 659                if (!user_ident_sufficiently_given())
 660                        fprintf(fp,
 661                                "%s"
 662                                "# Committer: %s\n",
 663                                ident_shown++ ? "" : "#\n",
 664                                committer_ident);
 665
 666                if (ident_shown)
 667                        fprintf(fp, "#\n");
 668
 669                saved_color_setting = s->use_color;
 670                s->use_color = 0;
 671                commitable = run_status(fp, index_file, prefix, 1, s);
 672                s->use_color = saved_color_setting;
 673        } else {
 674                unsigned char sha1[20];
 675                const char *parent = "HEAD";
 676
 677                if (!active_nr && read_cache() < 0)
 678                        die("Cannot read index");
 679
 680                if (amend)
 681                        parent = "HEAD^1";
 682
 683                if (get_sha1(parent, sha1))
 684                        commitable = !!active_nr;
 685                else
 686                        commitable = index_differs_from(parent, 0);
 687        }
 688
 689        fclose(fp);
 690
 691        if (!commitable && !in_merge && !allow_empty &&
 692            !(amend && is_a_merge(head_sha1))) {
 693                run_status(stdout, index_file, prefix, 0, s);
 694                return 0;
 695        }
 696
 697        /*
 698         * Re-read the index as pre-commit hook could have updated it,
 699         * and write it out as a tree.  We must do this before we invoke
 700         * the editor and after we invoke run_status above.
 701         */
 702        discard_cache();
 703        read_cache_from(index_file);
 704        if (!active_cache_tree)
 705                active_cache_tree = cache_tree();
 706        if (cache_tree_update(active_cache_tree,
 707                              active_cache, active_nr, 0, 0) < 0) {
 708                error("Error building trees");
 709                return 0;
 710        }
 711
 712        if (run_hook(index_file, "prepare-commit-msg",
 713                     git_path(commit_editmsg), hook_arg1, hook_arg2, NULL))
 714                return 0;
 715
 716        if (use_editor) {
 717                char index[PATH_MAX];
 718                const char *env[2] = { index, NULL };
 719                snprintf(index, sizeof(index), "GIT_INDEX_FILE=%s", index_file);
 720                if (launch_editor(git_path(commit_editmsg), NULL, env)) {
 721                        fprintf(stderr,
 722                        "Please supply the message using either -m or -F option.\n");
 723                        exit(1);
 724                }
 725        }
 726
 727        if (!no_verify &&
 728            run_hook(index_file, "commit-msg", git_path(commit_editmsg), NULL)) {
 729                return 0;
 730        }
 731
 732        return 1;
 733}
 734
 735/*
 736 * Find out if the message in the strbuf contains only whitespace and
 737 * Signed-off-by lines.
 738 */
 739static int message_is_empty(struct strbuf *sb)
 740{
 741        struct strbuf tmpl = STRBUF_INIT;
 742        const char *nl;
 743        int eol, i, start = 0;
 744
 745        if (cleanup_mode == CLEANUP_NONE && sb->len)
 746                return 0;
 747
 748        /* See if the template is just a prefix of the message. */
 749        if (template_file && strbuf_read_file(&tmpl, template_file, 0) > 0) {
 750                stripspace(&tmpl, cleanup_mode == CLEANUP_ALL);
 751                if (start + tmpl.len <= sb->len &&
 752                    memcmp(tmpl.buf, sb->buf + start, tmpl.len) == 0)
 753                        start += tmpl.len;
 754        }
 755        strbuf_release(&tmpl);
 756
 757        /* Check if the rest is just whitespace and Signed-of-by's. */
 758        for (i = start; i < sb->len; i++) {
 759                nl = memchr(sb->buf + i, '\n', sb->len - i);
 760                if (nl)
 761                        eol = nl - sb->buf;
 762                else
 763                        eol = sb->len;
 764
 765                if (strlen(sign_off_header) <= eol - i &&
 766                    !prefixcmp(sb->buf + i, sign_off_header)) {
 767                        i = eol;
 768                        continue;
 769                }
 770                while (i < eol)
 771                        if (!isspace(sb->buf[i++]))
 772                                return 0;
 773        }
 774
 775        return 1;
 776}
 777
 778static const char *find_author_by_nickname(const char *name)
 779{
 780        struct rev_info revs;
 781        struct commit *commit;
 782        struct strbuf buf = STRBUF_INIT;
 783        const char *av[20];
 784        int ac = 0;
 785
 786        init_revisions(&revs, NULL);
 787        strbuf_addf(&buf, "--author=%s", name);
 788        av[++ac] = "--all";
 789        av[++ac] = "-i";
 790        av[++ac] = buf.buf;
 791        av[++ac] = NULL;
 792        setup_revisions(ac, av, &revs, NULL);
 793        prepare_revision_walk(&revs);
 794        commit = get_revision(&revs);
 795        if (commit) {
 796                struct pretty_print_context ctx = {0};
 797                ctx.date_mode = DATE_NORMAL;
 798                strbuf_release(&buf);
 799                format_commit_message(commit, "%an <%ae>", &buf, &ctx);
 800                return strbuf_detach(&buf, NULL);
 801        }
 802        die("No existing author found with '%s'", name);
 803}
 804
 805
 806static void handle_untracked_files_arg(struct wt_status *s)
 807{
 808        if (!untracked_files_arg)
 809                ; /* default already initialized */
 810        else if (!strcmp(untracked_files_arg, "no"))
 811                s->show_untracked_files = SHOW_NO_UNTRACKED_FILES;
 812        else if (!strcmp(untracked_files_arg, "normal"))
 813                s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
 814        else if (!strcmp(untracked_files_arg, "all"))
 815                s->show_untracked_files = SHOW_ALL_UNTRACKED_FILES;
 816        else
 817                die("Invalid untracked files mode '%s'", untracked_files_arg);
 818}
 819
 820static int parse_and_validate_options(int argc, const char *argv[],
 821                                      const char * const usage[],
 822                                      const char *prefix,
 823                                      struct wt_status *s)
 824{
 825        int f = 0;
 826
 827        argc = parse_options(argc, argv, prefix, builtin_commit_options, usage,
 828                             0);
 829
 830        if (force_author && !strchr(force_author, '>'))
 831                force_author = find_author_by_nickname(force_author);
 832
 833        if (force_author && renew_authorship)
 834                die("Using both --reset-author and --author does not make sense");
 835
 836        if (logfile || message.len || use_message)
 837                use_editor = 0;
 838        if (edit_flag)
 839                use_editor = 1;
 840        if (!use_editor)
 841                setenv("GIT_EDITOR", ":", 1);
 842
 843        if (get_sha1("HEAD", head_sha1))
 844                initial_commit = 1;
 845
 846        /* Sanity check options */
 847        if (amend && initial_commit)
 848                die("You have nothing to amend.");
 849        if (amend && in_merge)
 850                die("You are in the middle of a merge -- cannot amend.");
 851
 852        if (use_message)
 853                f++;
 854        if (edit_message)
 855                f++;
 856        if (logfile)
 857                f++;
 858        if (f > 1)
 859                die("Only one of -c/-C/-F can be used.");
 860        if (message.len && f > 0)
 861                die("Option -m cannot be combined with -c/-C/-F.");
 862        if (edit_message)
 863                use_message = edit_message;
 864        if (amend && !use_message)
 865                use_message = "HEAD";
 866        if (!use_message && renew_authorship)
 867                die("--reset-author can be used only with -C, -c or --amend.");
 868        if (use_message) {
 869                unsigned char sha1[20];
 870                static char utf8[] = "UTF-8";
 871                const char *out_enc;
 872                char *enc, *end;
 873                struct commit *commit;
 874
 875                if (get_sha1(use_message, sha1))
 876                        die("could not lookup commit %s", use_message);
 877                commit = lookup_commit_reference(sha1);
 878                if (!commit || parse_commit(commit))
 879                        die("could not parse commit %s", use_message);
 880
 881                enc = strstr(commit->buffer, "\nencoding");
 882                if (enc) {
 883                        end = strchr(enc + 10, '\n');
 884                        enc = xstrndup(enc + 10, end - (enc + 10));
 885                } else {
 886                        enc = utf8;
 887                }
 888                out_enc = git_commit_encoding ? git_commit_encoding : utf8;
 889
 890                if (strcmp(out_enc, enc))
 891                        use_message_buffer =
 892                                reencode_string(commit->buffer, out_enc, enc);
 893
 894                /*
 895                 * If we failed to reencode the buffer, just copy it
 896                 * byte for byte so the user can try to fix it up.
 897                 * This also handles the case where input and output
 898                 * encodings are identical.
 899                 */
 900                if (use_message_buffer == NULL)
 901                        use_message_buffer = xstrdup(commit->buffer);
 902                if (enc != utf8)
 903                        free(enc);
 904        }
 905
 906        if (!!also + !!only + !!all + !!interactive > 1)
 907                die("Only one of --include/--only/--all/--interactive can be used.");
 908        if (argc == 0 && (also || (only && !amend)))
 909                die("No paths with --include/--only does not make sense.");
 910        if (argc == 0 && only && amend)
 911                only_include_assumed = "Clever... amending the last one with dirty index.";
 912        if (argc > 0 && !also && !only)
 913                only_include_assumed = "Explicit paths specified without -i nor -o; assuming --only paths...";
 914        if (!cleanup_arg || !strcmp(cleanup_arg, "default"))
 915                cleanup_mode = use_editor ? CLEANUP_ALL : CLEANUP_SPACE;
 916        else if (!strcmp(cleanup_arg, "verbatim"))
 917                cleanup_mode = CLEANUP_NONE;
 918        else if (!strcmp(cleanup_arg, "whitespace"))
 919                cleanup_mode = CLEANUP_SPACE;
 920        else if (!strcmp(cleanup_arg, "strip"))
 921                cleanup_mode = CLEANUP_ALL;
 922        else
 923                die("Invalid cleanup mode %s", cleanup_arg);
 924
 925        handle_untracked_files_arg(s);
 926
 927        if (all && argc > 0)
 928                die("Paths with -a does not make sense.");
 929        else if (interactive && argc > 0)
 930                die("Paths with --interactive does not make sense.");
 931
 932        if (null_termination && status_format == STATUS_FORMAT_LONG)
 933                status_format = STATUS_FORMAT_PORCELAIN;
 934        if (status_format != STATUS_FORMAT_LONG)
 935                dry_run = 1;
 936
 937        return argc;
 938}
 939
 940static int dry_run_commit(int argc, const char **argv, const char *prefix,
 941                          struct wt_status *s)
 942{
 943        int commitable;
 944        const char *index_file;
 945
 946        index_file = prepare_index(argc, argv, prefix, 1);
 947        commitable = run_status(stdout, index_file, prefix, 0, s);
 948        rollback_index_files();
 949
 950        return commitable ? 0 : 1;
 951}
 952
 953static int parse_status_slot(const char *var, int offset)
 954{
 955        if (!strcasecmp(var+offset, "header"))
 956                return WT_STATUS_HEADER;
 957        if (!strcasecmp(var+offset, "updated")
 958                || !strcasecmp(var+offset, "added"))
 959                return WT_STATUS_UPDATED;
 960        if (!strcasecmp(var+offset, "changed"))
 961                return WT_STATUS_CHANGED;
 962        if (!strcasecmp(var+offset, "untracked"))
 963                return WT_STATUS_UNTRACKED;
 964        if (!strcasecmp(var+offset, "nobranch"))
 965                return WT_STATUS_NOBRANCH;
 966        if (!strcasecmp(var+offset, "unmerged"))
 967                return WT_STATUS_UNMERGED;
 968        return -1;
 969}
 970
 971static int git_status_config(const char *k, const char *v, void *cb)
 972{
 973        struct wt_status *s = cb;
 974
 975        if (!strcmp(k, "status.submodulesummary")) {
 976                int is_bool;
 977                s->submodule_summary = git_config_bool_or_int(k, v, &is_bool);
 978                if (is_bool && s->submodule_summary)
 979                        s->submodule_summary = -1;
 980                return 0;
 981        }
 982        if (!strcmp(k, "status.color") || !strcmp(k, "color.status")) {
 983                s->use_color = git_config_colorbool(k, v, -1);
 984                return 0;
 985        }
 986        if (!prefixcmp(k, "status.color.") || !prefixcmp(k, "color.status.")) {
 987                int slot = parse_status_slot(k, 13);
 988                if (slot < 0)
 989                        return 0;
 990                if (!v)
 991                        return config_error_nonbool(k);
 992                color_parse(v, k, s->color_palette[slot]);
 993                return 0;
 994        }
 995        if (!strcmp(k, "status.relativepaths")) {
 996                s->relative_paths = git_config_bool(k, v);
 997                return 0;
 998        }
 999        if (!strcmp(k, "status.showuntrackedfiles")) {
1000                if (!v)
1001                        return config_error_nonbool(k);
1002                else if (!strcmp(v, "no"))
1003                        s->show_untracked_files = SHOW_NO_UNTRACKED_FILES;
1004                else if (!strcmp(v, "normal"))
1005                        s->show_untracked_files = SHOW_NORMAL_UNTRACKED_FILES;
1006                else if (!strcmp(v, "all"))
1007                        s->show_untracked_files = SHOW_ALL_UNTRACKED_FILES;
1008                else
1009                        return error("Invalid untracked files mode '%s'", v);
1010                return 0;
1011        }
1012        return git_diff_ui_config(k, v, NULL);
1013}
1014
1015int cmd_status(int argc, const char **argv, const char *prefix)
1016{
1017        struct wt_status s;
1018        unsigned char sha1[20];
1019        static struct option builtin_status_options[] = {
1020                OPT__VERBOSE(&verbose),
1021                OPT_SET_INT('s', "short", &status_format,
1022                            "show status concisely", STATUS_FORMAT_SHORT),
1023                OPT_SET_INT(0, "porcelain", &status_format,
1024                            "show porcelain output format",
1025                            STATUS_FORMAT_PORCELAIN),
1026                OPT_BOOLEAN('z', "null", &null_termination,
1027                            "terminate entries with NUL"),
1028                { OPTION_STRING, 'u', "untracked-files", &untracked_files_arg,
1029                  "mode",
1030                  "show untracked files, optional modes: all, normal, no. (Default: all)",
1031                  PARSE_OPT_OPTARG, NULL, (intptr_t)"all" },
1032                OPT_END(),
1033        };
1034
1035        if (null_termination && status_format == STATUS_FORMAT_LONG)
1036                status_format = STATUS_FORMAT_PORCELAIN;
1037
1038        wt_status_prepare(&s);
1039        git_config(git_status_config, &s);
1040        in_merge = file_exists(git_path("MERGE_HEAD"));
1041        argc = parse_options(argc, argv, prefix,
1042                             builtin_status_options,
1043                             builtin_status_usage, 0);
1044        handle_untracked_files_arg(&s);
1045
1046        if (*argv)
1047                s.pathspec = get_pathspec(prefix, argv);
1048
1049        read_cache();
1050        refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, s.pathspec, NULL, NULL);
1051        s.is_initial = get_sha1(s.reference, sha1) ? 1 : 0;
1052        s.in_merge = in_merge;
1053        wt_status_collect(&s);
1054
1055        if (s.relative_paths)
1056                s.prefix = prefix;
1057        if (s.use_color == -1)
1058                s.use_color = git_use_color_default;
1059        if (diff_use_color_default == -1)
1060                diff_use_color_default = git_use_color_default;
1061
1062        switch (status_format) {
1063        case STATUS_FORMAT_SHORT:
1064                wt_shortstatus_print(&s, null_termination);
1065                break;
1066        case STATUS_FORMAT_PORCELAIN:
1067                wt_porcelain_print(&s, null_termination);
1068                break;
1069        case STATUS_FORMAT_LONG:
1070                s.verbose = verbose;
1071                wt_status_print(&s);
1072                break;
1073        }
1074        return 0;
1075}
1076
1077static void print_summary(const char *prefix, const unsigned char *sha1)
1078{
1079        struct rev_info rev;
1080        struct commit *commit;
1081        struct strbuf format = STRBUF_INIT;
1082        unsigned char junk_sha1[20];
1083        const char *head = resolve_ref("HEAD", junk_sha1, 0, NULL);
1084        struct pretty_print_context pctx = {0};
1085        struct strbuf author_ident = STRBUF_INIT;
1086        struct strbuf committer_ident = STRBUF_INIT;
1087
1088        commit = lookup_commit(sha1);
1089        if (!commit)
1090                die("couldn't look up newly created commit");
1091        if (!commit || parse_commit(commit))
1092                die("could not parse newly created commit");
1093
1094        strbuf_addstr(&format, "format:%h] %s");
1095
1096        format_commit_message(commit, "%an <%ae>", &author_ident, &pctx);
1097        format_commit_message(commit, "%cn <%ce>", &committer_ident, &pctx);
1098        if (strbuf_cmp(&author_ident, &committer_ident)) {
1099                strbuf_addstr(&format, "\n Author: ");
1100                strbuf_addbuf_percentquote(&format, &author_ident);
1101        }
1102        if (!user_ident_sufficiently_given()) {
1103                strbuf_addstr(&format, "\n Committer: ");
1104                strbuf_addbuf_percentquote(&format, &committer_ident);
1105                if (advice_implicit_identity) {
1106                        strbuf_addch(&format, '\n');
1107                        strbuf_addstr(&format, implicit_ident_advice);
1108                }
1109        }
1110        strbuf_release(&author_ident);
1111        strbuf_release(&committer_ident);
1112
1113        init_revisions(&rev, prefix);
1114        setup_revisions(0, NULL, &rev, NULL);
1115
1116        rev.abbrev = 0;
1117        rev.diff = 1;
1118        rev.diffopt.output_format =
1119                DIFF_FORMAT_SHORTSTAT | DIFF_FORMAT_SUMMARY;
1120
1121        rev.verbose_header = 1;
1122        rev.show_root_diff = 1;
1123        get_commit_format(format.buf, &rev);
1124        rev.always_show_header = 0;
1125        rev.diffopt.detect_rename = 1;
1126        rev.diffopt.rename_limit = 100;
1127        rev.diffopt.break_opt = 0;
1128        diff_setup_done(&rev.diffopt);
1129
1130        printf("[%s%s ",
1131                !prefixcmp(head, "refs/heads/") ?
1132                        head + 11 :
1133                        !strcmp(head, "HEAD") ?
1134                                "detached HEAD" :
1135                                head,
1136                initial_commit ? " (root-commit)" : "");
1137
1138        if (!log_tree_commit(&rev, commit)) {
1139                struct pretty_print_context ctx = {0};
1140                struct strbuf buf = STRBUF_INIT;
1141                ctx.date_mode = DATE_NORMAL;
1142                format_commit_message(commit, format.buf + 7, &buf, &ctx);
1143                printf("%s\n", buf.buf);
1144                strbuf_release(&buf);
1145        }
1146        strbuf_release(&format);
1147}
1148
1149static int git_commit_config(const char *k, const char *v, void *cb)
1150{
1151        struct wt_status *s = cb;
1152
1153        if (!strcmp(k, "commit.template"))
1154                return git_config_pathname(&template_file, k, v);
1155        if (!strcmp(k, "commit.status")) {
1156                include_status = git_config_bool(k, v);
1157                return 0;
1158        }
1159
1160        return git_status_config(k, v, s);
1161}
1162
1163int cmd_commit(int argc, const char **argv, const char *prefix)
1164{
1165        struct strbuf sb = STRBUF_INIT;
1166        const char *index_file, *reflog_msg;
1167        char *nl, *p;
1168        unsigned char commit_sha1[20];
1169        struct ref_lock *ref_lock;
1170        struct commit_list *parents = NULL, **pptr = &parents;
1171        struct stat statbuf;
1172        int allow_fast_forward = 1;
1173        struct wt_status s;
1174
1175        wt_status_prepare(&s);
1176        git_config(git_commit_config, &s);
1177        in_merge = file_exists(git_path("MERGE_HEAD"));
1178        s.in_merge = in_merge;
1179
1180        if (s.use_color == -1)
1181                s.use_color = git_use_color_default;
1182        argc = parse_and_validate_options(argc, argv, builtin_commit_usage,
1183                                          prefix, &s);
1184        if (dry_run) {
1185                if (diff_use_color_default == -1)
1186                        diff_use_color_default = git_use_color_default;
1187                return dry_run_commit(argc, argv, prefix, &s);
1188        }
1189        index_file = prepare_index(argc, argv, prefix, 0);
1190
1191        /* Set up everything for writing the commit object.  This includes
1192           running hooks, writing the trees, and interacting with the user.  */
1193        if (!prepare_to_commit(index_file, prefix, &s)) {
1194                rollback_index_files();
1195                return 1;
1196        }
1197
1198        /* Determine parents */
1199        if (initial_commit) {
1200                reflog_msg = "commit (initial)";
1201        } else if (amend) {
1202                struct commit_list *c;
1203                struct commit *commit;
1204
1205                reflog_msg = "commit (amend)";
1206                commit = lookup_commit(head_sha1);
1207                if (!commit || parse_commit(commit))
1208                        die("could not parse HEAD commit");
1209
1210                for (c = commit->parents; c; c = c->next)
1211                        pptr = &commit_list_insert(c->item, pptr)->next;
1212        } else if (in_merge) {
1213                struct strbuf m = STRBUF_INIT;
1214                FILE *fp;
1215
1216                reflog_msg = "commit (merge)";
1217                pptr = &commit_list_insert(lookup_commit(head_sha1), pptr)->next;
1218                fp = fopen(git_path("MERGE_HEAD"), "r");
1219                if (fp == NULL)
1220                        die_errno("could not open '%s' for reading",
1221                                  git_path("MERGE_HEAD"));
1222                while (strbuf_getline(&m, fp, '\n') != EOF) {
1223                        unsigned char sha1[20];
1224                        if (get_sha1_hex(m.buf, sha1) < 0)
1225                                die("Corrupt MERGE_HEAD file (%s)", m.buf);
1226                        pptr = &commit_list_insert(lookup_commit(sha1), pptr)->next;
1227                }
1228                fclose(fp);
1229                strbuf_release(&m);
1230                if (!stat(git_path("MERGE_MODE"), &statbuf)) {
1231                        if (strbuf_read_file(&sb, git_path("MERGE_MODE"), 0) < 0)
1232                                die_errno("could not read MERGE_MODE");
1233                        if (!strcmp(sb.buf, "no-ff"))
1234                                allow_fast_forward = 0;
1235                }
1236                if (allow_fast_forward)
1237                        parents = reduce_heads(parents);
1238        } else {
1239                reflog_msg = "commit";
1240                pptr = &commit_list_insert(lookup_commit(head_sha1), pptr)->next;
1241        }
1242
1243        /* Finally, get the commit message */
1244        strbuf_reset(&sb);
1245        if (strbuf_read_file(&sb, git_path(commit_editmsg), 0) < 0) {
1246                int saved_errno = errno;
1247                rollback_index_files();
1248                die("could not read commit message: %s", strerror(saved_errno));
1249        }
1250
1251        /* Truncate the message just before the diff, if any. */
1252        if (verbose) {
1253                p = strstr(sb.buf, "\ndiff --git ");
1254                if (p != NULL)
1255                        strbuf_setlen(&sb, p - sb.buf + 1);
1256        }
1257
1258        if (cleanup_mode != CLEANUP_NONE)
1259                stripspace(&sb, cleanup_mode == CLEANUP_ALL);
1260        if (message_is_empty(&sb)) {
1261                rollback_index_files();
1262                fprintf(stderr, "Aborting commit due to empty commit message.\n");
1263                exit(1);
1264        }
1265
1266        if (commit_tree(sb.buf, active_cache_tree->sha1, parents, commit_sha1,
1267                        fmt_ident(author_name, author_email, author_date,
1268                                IDENT_ERROR_ON_NO_NAME))) {
1269                rollback_index_files();
1270                die("failed to write commit object");
1271        }
1272
1273        ref_lock = lock_any_ref_for_update("HEAD",
1274                                           initial_commit ? NULL : head_sha1,
1275                                           0);
1276
1277        nl = strchr(sb.buf, '\n');
1278        if (nl)
1279                strbuf_setlen(&sb, nl + 1 - sb.buf);
1280        else
1281                strbuf_addch(&sb, '\n');
1282        strbuf_insert(&sb, 0, reflog_msg, strlen(reflog_msg));
1283        strbuf_insert(&sb, strlen(reflog_msg), ": ", 2);
1284
1285        if (!ref_lock) {
1286                rollback_index_files();
1287                die("cannot lock HEAD ref");
1288        }
1289        if (write_ref_sha1(ref_lock, commit_sha1, sb.buf) < 0) {
1290                rollback_index_files();
1291                die("cannot update HEAD ref");
1292        }
1293
1294        unlink(git_path("MERGE_HEAD"));
1295        unlink(git_path("MERGE_MSG"));
1296        unlink(git_path("MERGE_MODE"));
1297        unlink(git_path("SQUASH_MSG"));
1298
1299        if (commit_index_files())
1300                die ("Repository has been updated, but unable to write\n"
1301                     "new_index file. Check that disk is not full or quota is\n"
1302                     "not exceeded, and then \"git reset HEAD\" to recover.");
1303
1304        rerere(0);
1305        run_hook(get_index_file(), "post-commit", NULL);
1306        if (!quiet)
1307                print_summary(prefix, commit_sha1);
1308
1309        return 0;
1310}