Andrew's git / gitweb.git / builtin/config.c
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builtin / config.con commit use labs() for variables of type long instead of abs() (83915ba)
   1#include "builtin.h"
   2#include "cache.h"
   3#include "color.h"
   4#include "parse-options.h"
   5#include "urlmatch.h"
   6
   7static const char *const builtin_config_usage[] = {
   8        N_("git config [options]"),
   9        NULL
  10};
  11
  12static char *key;
  13static regex_t *key_regexp;
  14static regex_t *regexp;
  15static int show_keys;
  16static int use_key_regexp;
  17static int do_all;
  18static int do_not_match;
  19static char delim = '=';
  20static char key_delim = ' ';
  21static char term = '\n';
  22
  23static int use_global_config, use_system_config, use_local_config;
  24static struct git_config_source given_config_source;
  25static int actions, types;
  26static const char *get_color_slot, *get_colorbool_slot;
  27static int end_null;
  28static int respect_includes = -1;
  29
  30#define ACTION_GET (1<<0)
  31#define ACTION_GET_ALL (1<<1)
  32#define ACTION_GET_REGEXP (1<<2)
  33#define ACTION_REPLACE_ALL (1<<3)
  34#define ACTION_ADD (1<<4)
  35#define ACTION_UNSET (1<<5)
  36#define ACTION_UNSET_ALL (1<<6)
  37#define ACTION_RENAME_SECTION (1<<7)
  38#define ACTION_REMOVE_SECTION (1<<8)
  39#define ACTION_LIST (1<<9)
  40#define ACTION_EDIT (1<<10)
  41#define ACTION_SET (1<<11)
  42#define ACTION_SET_ALL (1<<12)
  43#define ACTION_GET_COLOR (1<<13)
  44#define ACTION_GET_COLORBOOL (1<<14)
  45#define ACTION_GET_URLMATCH (1<<15)
  46
  47#define TYPE_BOOL (1<<0)
  48#define TYPE_INT (1<<1)
  49#define TYPE_BOOL_OR_INT (1<<2)
  50#define TYPE_PATH (1<<3)
  51
  52static struct option builtin_config_options[] = {
  53        OPT_GROUP(N_("Config file location")),
  54        OPT_BOOL(0, "global", &use_global_config, N_("use global config file")),
  55        OPT_BOOL(0, "system", &use_system_config, N_("use system config file")),
  56        OPT_BOOL(0, "local", &use_local_config, N_("use repository config file")),
  57        OPT_STRING('f', "file", &given_config_source.file, N_("file"), N_("use given config file")),
  58        OPT_STRING(0, "blob", &given_config_source.blob, N_("blob-id"), N_("read config from given blob object")),
  59        OPT_GROUP(N_("Action")),
  60        OPT_BIT(0, "get", &actions, N_("get value: name [value-regex]"), ACTION_GET),
  61        OPT_BIT(0, "get-all", &actions, N_("get all values: key [value-regex]"), ACTION_GET_ALL),
  62        OPT_BIT(0, "get-regexp", &actions, N_("get values for regexp: name-regex [value-regex]"), ACTION_GET_REGEXP),
  63        OPT_BIT(0, "get-urlmatch", &actions, N_("get value specific for the URL: section[.var] URL"), ACTION_GET_URLMATCH),
  64        OPT_BIT(0, "replace-all", &actions, N_("replace all matching variables: name value [value_regex]"), ACTION_REPLACE_ALL),
  65        OPT_BIT(0, "add", &actions, N_("add a new variable: name value"), ACTION_ADD),
  66        OPT_BIT(0, "unset", &actions, N_("remove a variable: name [value-regex]"), ACTION_UNSET),
  67        OPT_BIT(0, "unset-all", &actions, N_("remove all matches: name [value-regex]"), ACTION_UNSET_ALL),
  68        OPT_BIT(0, "rename-section", &actions, N_("rename section: old-name new-name"), ACTION_RENAME_SECTION),
  69        OPT_BIT(0, "remove-section", &actions, N_("remove a section: name"), ACTION_REMOVE_SECTION),
  70        OPT_BIT('l', "list", &actions, N_("list all"), ACTION_LIST),
  71        OPT_BIT('e', "edit", &actions, N_("open an editor"), ACTION_EDIT),
  72        OPT_STRING(0, "get-color", &get_color_slot, N_("slot"), N_("find the color configured: [default]")),
  73        OPT_STRING(0, "get-colorbool", &get_colorbool_slot, N_("slot"), N_("find the color setting: [stdout-is-tty]")),
  74        OPT_GROUP(N_("Type")),
  75        OPT_BIT(0, "bool", &types, N_("value is \"true\" or \"false\""), TYPE_BOOL),
  76        OPT_BIT(0, "int", &types, N_("value is decimal number"), TYPE_INT),
  77        OPT_BIT(0, "bool-or-int", &types, N_("value is --bool or --int"), TYPE_BOOL_OR_INT),
  78        OPT_BIT(0, "path", &types, N_("value is a path (file or directory name)"), TYPE_PATH),
  79        OPT_GROUP(N_("Other")),
  80        OPT_BOOL('z', "null", &end_null, N_("terminate values with NUL byte")),
  81        OPT_BOOL(0, "includes", &respect_includes, N_("respect include directives on lookup")),
  82        OPT_END(),
  83};
  84
  85static void check_argc(int argc, int min, int max) {
  86        if (argc >= min && argc <= max)
  87                return;
  88        error("wrong number of arguments");
  89        usage_with_options(builtin_config_usage, builtin_config_options);
  90}
  91
  92static int show_all_config(const char *key_, const char *value_, void *cb)
  93{
  94        if (value_)
  95                printf("%s%c%s%c", key_, delim, value_, term);
  96        else
  97                printf("%s%c", key_, term);
  98        return 0;
  99}
 100
 101struct strbuf_list {
 102        struct strbuf *items;
 103        int nr;
 104        int alloc;
 105};
 106
 107static int format_config(struct strbuf *buf, const char *key_, const char *value_)
 108{
 109        int must_free_vptr = 0;
 110        int must_print_delim = 0;
 111        char value[256];
 112        const char *vptr = value;
 113
 114        strbuf_init(buf, 0);
 115
 116        if (show_keys) {
 117                strbuf_addstr(buf, key_);
 118                must_print_delim = 1;
 119        }
 120        if (types == TYPE_INT)
 121                sprintf(value, "%"PRId64,
 122                        git_config_int64(key_, value_ ? value_ : ""));
 123        else if (types == TYPE_BOOL)
 124                vptr = git_config_bool(key_, value_) ? "true" : "false";
 125        else if (types == TYPE_BOOL_OR_INT) {
 126                int is_bool, v;
 127                v = git_config_bool_or_int(key_, value_, &is_bool);
 128                if (is_bool)
 129                        vptr = v ? "true" : "false";
 130                else
 131                        sprintf(value, "%d", v);
 132        } else if (types == TYPE_PATH) {
 133                if (git_config_pathname(&vptr, key_, value_) < 0)
 134                        return -1;
 135                must_free_vptr = 1;
 136        } else if (value_) {
 137                vptr = value_;
 138        } else {
 139                /* Just show the key name */
 140                vptr = "";
 141                must_print_delim = 0;
 142        }
 143
 144        if (must_print_delim)
 145                strbuf_addch(buf, key_delim);
 146        strbuf_addstr(buf, vptr);
 147        strbuf_addch(buf, term);
 148
 149        if (must_free_vptr)
 150                free((char *)vptr);
 151        return 0;
 152}
 153
 154static int collect_config(const char *key_, const char *value_, void *cb)
 155{
 156        struct strbuf_list *values = cb;
 157
 158        if (!use_key_regexp && strcmp(key_, key))
 159                return 0;
 160        if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
 161                return 0;
 162        if (regexp != NULL &&
 163            (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
 164                return 0;
 165
 166        ALLOC_GROW(values->items, values->nr + 1, values->alloc);
 167
 168        return format_config(&values->items[values->nr++], key_, value_);
 169}
 170
 171static int get_value(const char *key_, const char *regex_)
 172{
 173        int ret = CONFIG_GENERIC_ERROR;
 174        struct strbuf_list values = {NULL};
 175        int i;
 176
 177        if (use_key_regexp) {
 178                char *tl;
 179
 180                /*
 181                 * NEEDSWORK: this naive pattern lowercasing obviously does not
 182                 * work for more complex patterns like "^[^.]*Foo.*bar".
 183                 * Perhaps we should deprecate this altogether someday.
 184                 */
 185
 186                key = xstrdup(key_);
 187                for (tl = key + strlen(key) - 1;
 188                     tl >= key && *tl != '.';
 189                     tl--)
 190                        *tl = tolower(*tl);
 191                for (tl = key; *tl && *tl != '.'; tl++)
 192                        *tl = tolower(*tl);
 193
 194                key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
 195                if (regcomp(key_regexp, key, REG_EXTENDED)) {
 196                        fprintf(stderr, "Invalid key pattern: %s\n", key_);
 197                        free(key_regexp);
 198                        key_regexp = NULL;
 199                        ret = CONFIG_INVALID_PATTERN;
 200                        goto free_strings;
 201                }
 202        } else {
 203                if (git_config_parse_key(key_, &key, NULL)) {
 204                        ret = CONFIG_INVALID_KEY;
 205                        goto free_strings;
 206                }
 207        }
 208
 209        if (regex_) {
 210                if (regex_[0] == '!') {
 211                        do_not_match = 1;
 212                        regex_++;
 213                }
 214
 215                regexp = (regex_t*)xmalloc(sizeof(regex_t));
 216                if (regcomp(regexp, regex_, REG_EXTENDED)) {
 217                        fprintf(stderr, "Invalid pattern: %s\n", regex_);
 218                        free(regexp);
 219                        regexp = NULL;
 220                        ret = CONFIG_INVALID_PATTERN;
 221                        goto free_strings;
 222                }
 223        }
 224
 225        git_config_with_options(collect_config, &values,
 226                                &given_config_source, respect_includes);
 227
 228        ret = !values.nr;
 229
 230        for (i = 0; i < values.nr; i++) {
 231                struct strbuf *buf = values.items + i;
 232                if (do_all || i == values.nr - 1)
 233                        fwrite(buf->buf, 1, buf->len, stdout);
 234                strbuf_release(buf);
 235        }
 236        free(values.items);
 237
 238free_strings:
 239        free(key);
 240        if (key_regexp) {
 241                regfree(key_regexp);
 242                free(key_regexp);
 243        }
 244        if (regexp) {
 245                regfree(regexp);
 246                free(regexp);
 247        }
 248
 249        return ret;
 250}
 251
 252static char *normalize_value(const char *key, const char *value)
 253{
 254        char *normalized;
 255
 256        if (!value)
 257                return NULL;
 258
 259        if (types == 0 || types == TYPE_PATH)
 260                /*
 261                 * We don't do normalization for TYPE_PATH here: If
 262                 * the path is like ~/foobar/, we prefer to store
 263                 * "~/foobar/" in the config file, and to expand the ~
 264                 * when retrieving the value.
 265                 */
 266                normalized = xstrdup(value);
 267        else {
 268                normalized = xmalloc(64);
 269                if (types == TYPE_INT) {
 270                        int64_t v = git_config_int64(key, value);
 271                        sprintf(normalized, "%"PRId64, v);
 272                }
 273                else if (types == TYPE_BOOL)
 274                        sprintf(normalized, "%s",
 275                                git_config_bool(key, value) ? "true" : "false");
 276                else if (types == TYPE_BOOL_OR_INT) {
 277                        int is_bool, v;
 278                        v = git_config_bool_or_int(key, value, &is_bool);
 279                        if (!is_bool)
 280                                sprintf(normalized, "%d", v);
 281                        else
 282                                sprintf(normalized, "%s", v ? "true" : "false");
 283                }
 284        }
 285
 286        return normalized;
 287}
 288
 289static int get_color_found;
 290static const char *get_color_slot;
 291static const char *get_colorbool_slot;
 292static char parsed_color[COLOR_MAXLEN];
 293
 294static int git_get_color_config(const char *var, const char *value, void *cb)
 295{
 296        if (!strcmp(var, get_color_slot)) {
 297                if (!value)
 298                        config_error_nonbool(var);
 299                color_parse(value, var, parsed_color);
 300                get_color_found = 1;
 301        }
 302        return 0;
 303}
 304
 305static void get_color(const char *def_color)
 306{
 307        get_color_found = 0;
 308        parsed_color[0] = '\0';
 309        git_config_with_options(git_get_color_config, NULL,
 310                                &given_config_source, respect_includes);
 311
 312        if (!get_color_found && def_color)
 313                color_parse(def_color, "command line", parsed_color);
 314
 315        fputs(parsed_color, stdout);
 316}
 317
 318static int get_colorbool_found;
 319static int get_diff_color_found;
 320static int get_color_ui_found;
 321static int git_get_colorbool_config(const char *var, const char *value,
 322                void *cb)
 323{
 324        if (!strcmp(var, get_colorbool_slot))
 325                get_colorbool_found = git_config_colorbool(var, value);
 326        else if (!strcmp(var, "diff.color"))
 327                get_diff_color_found = git_config_colorbool(var, value);
 328        else if (!strcmp(var, "color.ui"))
 329                get_color_ui_found = git_config_colorbool(var, value);
 330        return 0;
 331}
 332
 333static int get_colorbool(int print)
 334{
 335        get_colorbool_found = -1;
 336        get_diff_color_found = -1;
 337        get_color_ui_found = -1;
 338        git_config_with_options(git_get_colorbool_config, NULL,
 339                                &given_config_source, respect_includes);
 340
 341        if (get_colorbool_found < 0) {
 342                if (!strcmp(get_colorbool_slot, "color.diff"))
 343                        get_colorbool_found = get_diff_color_found;
 344                if (get_colorbool_found < 0)
 345                        get_colorbool_found = get_color_ui_found;
 346        }
 347
 348        if (get_colorbool_found < 0)
 349                /* default value if none found in config */
 350                get_colorbool_found = GIT_COLOR_AUTO;
 351
 352        get_colorbool_found = want_color(get_colorbool_found);
 353
 354        if (print) {
 355                printf("%s\n", get_colorbool_found ? "true" : "false");
 356                return 0;
 357        } else
 358                return get_colorbool_found ? 0 : 1;
 359}
 360
 361static void check_write(void)
 362{
 363        if (given_config_source.use_stdin)
 364                die("writing to stdin is not supported");
 365
 366        if (given_config_source.blob)
 367                die("writing config blobs is not supported");
 368}
 369
 370struct urlmatch_current_candidate_value {
 371        char value_is_null;
 372        struct strbuf value;
 373};
 374
 375static int urlmatch_collect_fn(const char *var, const char *value, void *cb)
 376{
 377        struct string_list *values = cb;
 378        struct string_list_item *item = string_list_insert(values, var);
 379        struct urlmatch_current_candidate_value *matched = item->util;
 380
 381        if (!matched) {
 382                matched = xmalloc(sizeof(*matched));
 383                strbuf_init(&matched->value, 0);
 384                item->util = matched;
 385        } else {
 386                strbuf_reset(&matched->value);
 387        }
 388
 389        if (value) {
 390                strbuf_addstr(&matched->value, value);
 391                matched->value_is_null = 0;
 392        } else {
 393                matched->value_is_null = 1;
 394        }
 395        return 0;
 396}
 397
 398static int get_urlmatch(const char *var, const char *url)
 399{
 400        char *section_tail;
 401        struct string_list_item *item;
 402        struct urlmatch_config config = { STRING_LIST_INIT_DUP };
 403        struct string_list values = STRING_LIST_INIT_DUP;
 404
 405        config.collect_fn = urlmatch_collect_fn;
 406        config.cascade_fn = NULL;
 407        config.cb = &values;
 408
 409        if (!url_normalize(url, &config.url))
 410                die("%s", config.url.err);
 411
 412        config.section = xstrdup_tolower(var);
 413        section_tail = strchr(config.section, '.');
 414        if (section_tail) {
 415                *section_tail = '\0';
 416                config.key = section_tail + 1;
 417                show_keys = 0;
 418        } else {
 419                config.key = NULL;
 420                show_keys = 1;
 421        }
 422
 423        git_config_with_options(urlmatch_config_entry, &config,
 424                                &given_config_source, respect_includes);
 425
 426        for_each_string_list_item(item, &values) {
 427                struct urlmatch_current_candidate_value *matched = item->util;
 428                struct strbuf key = STRBUF_INIT;
 429                struct strbuf buf = STRBUF_INIT;
 430
 431                strbuf_addstr(&key, item->string);
 432                format_config(&buf, key.buf,
 433                              matched->value_is_null ? NULL : matched->value.buf);
 434                fwrite(buf.buf, 1, buf.len, stdout);
 435                strbuf_release(&key);
 436                strbuf_release(&buf);
 437
 438                strbuf_release(&matched->value);
 439        }
 440        string_list_clear(&config.vars, 1);
 441        string_list_clear(&values, 1);
 442        free(config.url.url);
 443
 444        free((void *)config.section);
 445        return 0;
 446}
 447
 448int cmd_config(int argc, const char **argv, const char *prefix)
 449{
 450        int nongit = !startup_info->have_repository;
 451        char *value;
 452
 453        given_config_source.file = getenv(CONFIG_ENVIRONMENT);
 454
 455        argc = parse_options(argc, argv, prefix, builtin_config_options,
 456                             builtin_config_usage,
 457                             PARSE_OPT_STOP_AT_NON_OPTION);
 458
 459        if (use_global_config + use_system_config + use_local_config +
 460            !!given_config_source.file + !!given_config_source.blob > 1) {
 461                error("only one config file at a time.");
 462                usage_with_options(builtin_config_usage, builtin_config_options);
 463        }
 464
 465        if (given_config_source.file &&
 466                        !strcmp(given_config_source.file, "-")) {
 467                given_config_source.file = NULL;
 468                given_config_source.use_stdin = 1;
 469        }
 470
 471        if (use_global_config) {
 472                char *user_config = NULL;
 473                char *xdg_config = NULL;
 474
 475                home_config_paths(&user_config, &xdg_config, "config");
 476
 477                if (!user_config)
 478                        /*
 479                         * It is unknown if HOME/.gitconfig exists, so
 480                         * we do not know if we should write to XDG
 481                         * location; error out even if XDG_CONFIG_HOME
 482                         * is set and points at a sane location.
 483                         */
 484                        die("$HOME not set");
 485
 486                if (access_or_warn(user_config, R_OK, 0) &&
 487                    xdg_config && !access_or_warn(xdg_config, R_OK, 0))
 488                        given_config_source.file = xdg_config;
 489                else
 490                        given_config_source.file = user_config;
 491        }
 492        else if (use_system_config)
 493                given_config_source.file = git_etc_gitconfig();
 494        else if (use_local_config)
 495                given_config_source.file = git_pathdup("config");
 496        else if (given_config_source.file) {
 497                if (!is_absolute_path(given_config_source.file) && prefix)
 498                        given_config_source.file =
 499                                xstrdup(prefix_filename(prefix,
 500                                                        strlen(prefix),
 501                                                        given_config_source.file));
 502        }
 503
 504        if (respect_includes == -1)
 505                respect_includes = !given_config_source.file;
 506
 507        if (end_null) {
 508                term = '\0';
 509                delim = '\n';
 510                key_delim = '\n';
 511        }
 512
 513        if (HAS_MULTI_BITS(types)) {
 514                error("only one type at a time.");
 515                usage_with_options(builtin_config_usage, builtin_config_options);
 516        }
 517
 518        if (get_color_slot)
 519            actions |= ACTION_GET_COLOR;
 520        if (get_colorbool_slot)
 521            actions |= ACTION_GET_COLORBOOL;
 522
 523        if ((get_color_slot || get_colorbool_slot) && types) {
 524                error("--get-color and variable type are incoherent");
 525                usage_with_options(builtin_config_usage, builtin_config_options);
 526        }
 527
 528        if (HAS_MULTI_BITS(actions)) {
 529                error("only one action at a time.");
 530                usage_with_options(builtin_config_usage, builtin_config_options);
 531        }
 532        if (actions == 0)
 533                switch (argc) {
 534                case 1: actions = ACTION_GET; break;
 535                case 2: actions = ACTION_SET; break;
 536                case 3: actions = ACTION_SET_ALL; break;
 537                default:
 538                        usage_with_options(builtin_config_usage, builtin_config_options);
 539                }
 540
 541        if (actions == ACTION_LIST) {
 542                check_argc(argc, 0, 0);
 543                if (git_config_with_options(show_all_config, NULL,
 544                                            &given_config_source,
 545                                            respect_includes) < 0) {
 546                        if (given_config_source.file)
 547                                die_errno("unable to read config file '%s'",
 548                                          given_config_source.file);
 549                        else
 550                                die("error processing config file(s)");
 551                }
 552        }
 553        else if (actions == ACTION_EDIT) {
 554                check_argc(argc, 0, 0);
 555                if (!given_config_source.file && nongit)
 556                        die("not in a git directory");
 557                if (given_config_source.use_stdin)
 558                        die("editing stdin is not supported");
 559                if (given_config_source.blob)
 560                        die("editing blobs is not supported");
 561                git_config(git_default_config, NULL);
 562                launch_editor(given_config_source.file ?
 563                              given_config_source.file : git_path("config"),
 564                              NULL, NULL);
 565        }
 566        else if (actions == ACTION_SET) {
 567                int ret;
 568                check_write();
 569                check_argc(argc, 2, 2);
 570                value = normalize_value(argv[0], argv[1]);
 571                ret = git_config_set_in_file(given_config_source.file, argv[0], value);
 572                if (ret == CONFIG_NOTHING_SET)
 573                        error("cannot overwrite multiple values with a single value\n"
 574                        "       Use a regexp, --add or --replace-all to change %s.", argv[0]);
 575                return ret;
 576        }
 577        else if (actions == ACTION_SET_ALL) {
 578                check_write();
 579                check_argc(argc, 2, 3);
 580                value = normalize_value(argv[0], argv[1]);
 581                return git_config_set_multivar_in_file(given_config_source.file,
 582                                                       argv[0], value, argv[2], 0);
 583        }
 584        else if (actions == ACTION_ADD) {
 585                check_write();
 586                check_argc(argc, 2, 2);
 587                value = normalize_value(argv[0], argv[1]);
 588                return git_config_set_multivar_in_file(given_config_source.file,
 589                                                       argv[0], value,
 590                                                       CONFIG_REGEX_NONE, 0);
 591        }
 592        else if (actions == ACTION_REPLACE_ALL) {
 593                check_write();
 594                check_argc(argc, 2, 3);
 595                value = normalize_value(argv[0], argv[1]);
 596                return git_config_set_multivar_in_file(given_config_source.file,
 597                                                       argv[0], value, argv[2], 1);
 598        }
 599        else if (actions == ACTION_GET) {
 600                check_argc(argc, 1, 2);
 601                return get_value(argv[0], argv[1]);
 602        }
 603        else if (actions == ACTION_GET_ALL) {
 604                do_all = 1;
 605                check_argc(argc, 1, 2);
 606                return get_value(argv[0], argv[1]);
 607        }
 608        else if (actions == ACTION_GET_REGEXP) {
 609                show_keys = 1;
 610                use_key_regexp = 1;
 611                do_all = 1;
 612                check_argc(argc, 1, 2);
 613                return get_value(argv[0], argv[1]);
 614        }
 615        else if (actions == ACTION_GET_URLMATCH) {
 616                check_argc(argc, 2, 2);
 617                return get_urlmatch(argv[0], argv[1]);
 618        }
 619        else if (actions == ACTION_UNSET) {
 620                check_write();
 621                check_argc(argc, 1, 2);
 622                if (argc == 2)
 623                        return git_config_set_multivar_in_file(given_config_source.file,
 624                                                               argv[0], NULL, argv[1], 0);
 625                else
 626                        return git_config_set_in_file(given_config_source.file,
 627                                                      argv[0], NULL);
 628        }
 629        else if (actions == ACTION_UNSET_ALL) {
 630                check_write();
 631                check_argc(argc, 1, 2);
 632                return git_config_set_multivar_in_file(given_config_source.file,
 633                                                       argv[0], NULL, argv[1], 1);
 634        }
 635        else if (actions == ACTION_RENAME_SECTION) {
 636                int ret;
 637                check_write();
 638                check_argc(argc, 2, 2);
 639                ret = git_config_rename_section_in_file(given_config_source.file,
 640                                                        argv[0], argv[1]);
 641                if (ret < 0)
 642                        return ret;
 643                if (ret == 0)
 644                        die("No such section!");
 645        }
 646        else if (actions == ACTION_REMOVE_SECTION) {
 647                int ret;
 648                check_write();
 649                check_argc(argc, 1, 1);
 650                ret = git_config_rename_section_in_file(given_config_source.file,
 651                                                        argv[0], NULL);
 652                if (ret < 0)
 653                        return ret;
 654                if (ret == 0)
 655                        die("No such section!");
 656        }
 657        else if (actions == ACTION_GET_COLOR) {
 658                get_color(argv[0]);
 659        }
 660        else if (actions == ACTION_GET_COLORBOOL) {
 661                if (argc == 1)
 662                        color_stdout_is_tty = git_config_bool("command line", argv[0]);
 663                return get_colorbool(argc != 0);
 664        }
 665
 666        return 0;
 667}