builtin/config.c

   1 #include "builtin.h"
   2 #include "cache.h"
   3 #include "color.h"
   4 #include "parse-options.h"
   5 #include "urlmatch.h"
   6
   7 static const char *const builtin_config_usage[] = {
   8         N_("git config [options]"),
   9         NULL
  10 };
  11
  12 static char *key;
  13 static regex_t *key_regexp;
  14 static regex_t *regexp;
  15 static int show_keys;
  16 static int use_key_regexp;
  17 static int do_all;
  18 static int do_not_match;
  19 static char delim = '=';
  20 static char key_delim = ' ';
  21 static char term = '\n';
  22
  23 static int use_global_config, use_system_config, use_local_config;
  24 static const char *given_config_file;
  25 static const char *given_config_blob;
  26 static int actions, types;
  27 static const char *get_color_slot, *get_colorbool_slot;
  28 static int end_null;
  29 static int respect_includes = -1;
  30
  31 #define ACTION_GET (1<<0)
  32 #define ACTION_GET_ALL (1<<1)
  33 #define ACTION_GET_REGEXP (1<<2)
  34 #define ACTION_REPLACE_ALL (1<<3)
  35 #define ACTION_ADD (1<<4)
  36 #define ACTION_UNSET (1<<5)
  37 #define ACTION_UNSET_ALL (1<<6)
  38 #define ACTION_RENAME_SECTION (1<<7)
  39 #define ACTION_REMOVE_SECTION (1<<8)
  40 #define ACTION_LIST (1<<9)
  41 #define ACTION_EDIT (1<<10)
  42 #define ACTION_SET (1<<11)
  43 #define ACTION_SET_ALL (1<<12)
  44 #define ACTION_GET_COLOR (1<<13)
  45 #define ACTION_GET_COLORBOOL (1<<14)
  46 #define ACTION_GET_URLMATCH (1<<15)
  47
  48 #define TYPE_BOOL (1<<0)
  49 #define TYPE_INT (1<<1)
  50 #define TYPE_BOOL_OR_INT (1<<2)
  51 #define TYPE_PATH (1<<3)
  52
  53 static struct option builtin_config_options[] = {
  54         OPT_GROUP(N_("Config file location")),
  55         OPT_BOOL(0, "global", &use_global_config, N_("use global config file")),
  56         OPT_BOOL(0, "system", &use_system_config, N_("use system config file")),
  57         OPT_BOOL(0, "local", &use_local_config, N_("use repository config file")),
  58         OPT_STRING('f', "file", &given_config_file, N_("file"), N_("use given config file")),
  59         OPT_STRING(0, "blob", &given_config_blob, N_("blob-id"), N_("read config from given blob object")),
  60         OPT_GROUP(N_("Action")),
  61         OPT_BIT(0, "get", &actions, N_("get value: name [value-regex]"), ACTION_GET),
  62         OPT_BIT(0, "get-all", &actions, N_("get all values: key [value-regex]"), ACTION_GET_ALL),
  63         OPT_BIT(0, "get-regexp", &actions, N_("get values for regexp: name-regex [value-regex]"), ACTION_GET_REGEXP),
  64         OPT_BIT(0, "get-urlmatch", &actions, N_("get value specific for the URL: section[.var] URL"), ACTION_GET_URLMATCH),
  65         OPT_BIT(0, "replace-all", &actions, N_("replace all matching variables: name value [value_regex]"), ACTION_REPLACE_ALL),
  66         OPT_BIT(0, "add", &actions, N_("add a new variable: name value"), ACTION_ADD),
  67         OPT_BIT(0, "unset", &actions, N_("remove a variable: name [value-regex]"), ACTION_UNSET),
  68         OPT_BIT(0, "unset-all", &actions, N_("remove all matches: name [value-regex]"), ACTION_UNSET_ALL),
  69         OPT_BIT(0, "rename-section", &actions, N_("rename section: old-name new-name"), ACTION_RENAME_SECTION),
  70         OPT_BIT(0, "remove-section", &actions, N_("remove a section: name"), ACTION_REMOVE_SECTION),
  71         OPT_BIT('l', "list", &actions, N_("list all"), ACTION_LIST),
  72         OPT_BIT('e', "edit", &actions, N_("open an editor"), ACTION_EDIT),
  73         OPT_STRING(0, "get-color", &get_color_slot, N_("slot"), N_("find the color configured: [default]")),
  74         OPT_STRING(0, "get-colorbool", &get_colorbool_slot, N_("slot"), N_("find the color setting: [stdout-is-tty]")),
  75         OPT_GROUP(N_("Type")),
  76         OPT_BIT(0, "bool", &types, N_("value is \"true\" or \"false\""), TYPE_BOOL),
  77         OPT_BIT(0, "int", &types, N_("value is decimal number"), TYPE_INT),
  78         OPT_BIT(0, "bool-or-int", &types, N_("value is --bool or --int"), TYPE_BOOL_OR_INT),
  79         OPT_BIT(0, "path", &types, N_("value is a path (file or directory name)"), TYPE_PATH),
  80         OPT_GROUP(N_("Other")),
  81         OPT_BOOL('z', "null", &end_null, N_("terminate values with NUL byte")),
  82         OPT_BOOL(0, "includes", &respect_includes, N_("respect include directives on lookup")),
  83         OPT_END(),
  84 };
  85
  86 static void check_argc(int argc, int min, int max) {
  87         if (argc >= min && argc <= max)
  88                 return;
  89         error("wrong number of arguments");
  90         usage_with_options(builtin_config_usage, builtin_config_options);
  91 }
  92
  93 static int show_all_config(const char *key_, const char *value_, void *cb)
  94 {
  95         if (value_)
  96                 printf("%s%c%s%c", key_, delim, value_, term);
  97         else
  98                 printf("%s%c", key_, term);
  99         return 0;
 100 }
 101
 102 struct strbuf_list {
 103         struct strbuf *items;
 104         int nr;
 105         int alloc;
 106 };
 107
 108 static int format_config(struct strbuf *buf, const char *key_, const char *value_)
 109 {
 110         int must_free_vptr = 0;
 111         int must_print_delim = 0;
 112         char value[256];
 113         const char *vptr = value;
 114
 115         strbuf_init(buf, 0);
 116
 117         if (show_keys) {
 118                 strbuf_addstr(buf, key_);
 119                 must_print_delim = 1;
 120         }
 121         if (types == TYPE_INT)
 122                 sprintf(value, "%"PRId64,
 123                         git_config_int64(key_, value_ ? value_ : ""));
 124         else if (types == TYPE_BOOL)
 125                 vptr = git_config_bool(key_, value_) ? "true" : "false";
 126         else if (types == TYPE_BOOL_OR_INT) {
 127                 int is_bool, v;
 128                 v = git_config_bool_or_int(key_, value_, &is_bool);
 129                 if (is_bool)
 130                         vptr = v ? "true" : "false";
 131                 else
 132                         sprintf(value, "%d", v);
 133         } else if (types == TYPE_PATH) {
 134                 if (git_config_pathname(&vptr, key_, value_) < 0)
 135                         return -1;
 136                 must_free_vptr = 1;
 137         } else if (value_) {
 138                 vptr = value_;
 139         } else {
 140                 /* Just show the key name */
 141                 vptr = "";
 142                 must_print_delim = 0;
 143         }
 144
 145         if (must_print_delim)
 146                 strbuf_addch(buf, key_delim);
 147         strbuf_addstr(buf, vptr);
 148         strbuf_addch(buf, term);
 149
 150         if (must_free_vptr)
 151                 free((char *)vptr);
 152         return 0;
 153 }
 154
 155 static int collect_config(const char *key_, const char *value_, void *cb)
 156 {
 157         struct strbuf_list *values = cb;
 158
 159         if (!use_key_regexp && strcmp(key_, key))
 160                 return 0;
 161         if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
 162                 return 0;
 163         if (regexp != NULL &&
 164             (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
 165                 return 0;
 166
 167         ALLOC_GROW(values->items, values->nr + 1, values->alloc);
 168
 169         return format_config(&values->items[values->nr++], key_, value_);
 170 }
 171
 172 static int get_value(const char *key_, const char *regex_)
 173 {
 174         int ret = CONFIG_GENERIC_ERROR;
 175         struct strbuf_list values = {NULL};
 176         int i;
 177
 178         if (use_key_regexp) {
 179                 char *tl;
 180
 181                 /*
 182                  * NEEDSWORK: this naive pattern lowercasing obviously does not
 183                  * work for more complex patterns like "^[^.]*Foo.*bar".
 184                  * Perhaps we should deprecate this altogether someday.
 185                  */
 186
 187                 key = xstrdup(key_);
 188                 for (tl = key + strlen(key) - 1;
 189                      tl >= key && *tl != '.';
 190                      tl--)
 191                         *tl = tolower(*tl);
 192                 for (tl = key; *tl && *tl != '.'; tl++)
 193                         *tl = tolower(*tl);
 194
 195                 key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
 196                 if (regcomp(key_regexp, key, REG_EXTENDED)) {
 197                         fprintf(stderr, "Invalid key pattern: %s\n", key_);
 198                         free(key_regexp);
 199                         key_regexp = NULL;
 200                         ret = CONFIG_INVALID_PATTERN;
 201                         goto free_strings;
 202                 }
 203         } else {
 204                 if (git_config_parse_key(key_, &key, NULL)) {
 205                         ret = CONFIG_INVALID_KEY;
 206                         goto free_strings;
 207                 }
 208         }
 209
 210         if (regex_) {
 211                 if (regex_[0] == '!') {
 212                         do_not_match = 1;
 213                         regex_++;
 214                 }
 215
 216                 regexp = (regex_t*)xmalloc(sizeof(regex_t));
 217                 if (regcomp(regexp, regex_, REG_EXTENDED)) {
 218                         fprintf(stderr, "Invalid pattern: %s\n", regex_);
 219                         free(regexp);
 220                         regexp = NULL;
 221                         ret = CONFIG_INVALID_PATTERN;
 222                         goto free_strings;
 223                 }
 224         }
 225
 226         git_config_with_options(collect_config, &values,
 227                                 given_config_file, given_config_blob,
 228                                 respect_includes);
 229
 230         ret = !values.nr;
 231
 232         for (i = 0; i < values.nr; i++) {
 233                 struct strbuf *buf = values.items + i;
 234                 if (do_all || i == values.nr - 1)
 235                         fwrite(buf->buf, 1, buf->len, stdout);
 236                 strbuf_release(buf);
 237         }
 238         free(values.items);
 239
 240 free_strings:
 241         free(key);
 242         if (key_regexp) {
 243                 regfree(key_regexp);
 244                 free(key_regexp);
 245         }
 246         if (regexp) {
 247                 regfree(regexp);
 248                 free(regexp);
 249         }
 250
 251         return ret;
 252 }
 253
 254 static char *normalize_value(const char *key, const char *value)
 255 {
 256         char *normalized;
 257
 258         if (!value)
 259                 return NULL;
 260
 261         if (types == 0 || types == TYPE_PATH)
 262                 /*
 263                  * We don't do normalization for TYPE_PATH here: If
 264                  * the path is like ~/foobar/, we prefer to store
 265                  * "~/foobar/" in the config file, and to expand the ~
 266                  * when retrieving the value.
 267                  */
 268                 normalized = xstrdup(value);
 269         else {
 270                 normalized = xmalloc(64);
 271                 if (types == TYPE_INT) {
 272                         int64_t v = git_config_int64(key, value);
 273                         sprintf(normalized, "%"PRId64, v);
 274                 }
 275                 else if (types == TYPE_BOOL)
 276                         sprintf(normalized, "%s",
 277                                 git_config_bool(key, value) ? "true" : "false");
 278                 else if (types == TYPE_BOOL_OR_INT) {
 279                         int is_bool, v;
 280                         v = git_config_bool_or_int(key, value, &is_bool);
 281                         if (!is_bool)
 282                                 sprintf(normalized, "%d", v);
 283                         else
 284                                 sprintf(normalized, "%s", v ? "true" : "false");
 285                 }
 286         }
 287
 288         return normalized;
 289 }
 290
 291 static int get_color_found;
 292 static const char *get_color_slot;
 293 static const char *get_colorbool_slot;
 294 static char parsed_color[COLOR_MAXLEN];
 295
 296 static int git_get_color_config(const char *var, const char *value, void *cb)
 297 {
 298         if (!strcmp(var, get_color_slot)) {
 299                 if (!value)
 300                         config_error_nonbool(var);
 301                 color_parse(value, var, parsed_color);
 302                 get_color_found = 1;
 303         }
 304         return 0;
 305 }
 306
 307 static void get_color(const char *def_color)
 308 {
 309         get_color_found = 0;
 310         parsed_color[0] = '\0';
 311         git_config_with_options(git_get_color_config, NULL,
 312                                 given_config_file, given_config_blob,
 313                                 respect_includes);
 314
 315         if (!get_color_found && def_color)
 316                 color_parse(def_color, "command line", parsed_color);
 317
 318         fputs(parsed_color, stdout);
 319 }
 320
 321 static int get_colorbool_found;
 322 static int get_diff_color_found;
 323 static int get_color_ui_found;
 324 static int git_get_colorbool_config(const char *var, const char *value,
 325                 void *cb)
 326 {
 327         if (!strcmp(var, get_colorbool_slot))
 328                 get_colorbool_found = git_config_colorbool(var, value);
 329         else if (!strcmp(var, "diff.color"))
 330                 get_diff_color_found = git_config_colorbool(var, value);
 331         else if (!strcmp(var, "color.ui"))
 332                 get_color_ui_found = git_config_colorbool(var, value);
 333         return 0;
 334 }
 335
 336 static int get_colorbool(int print)
 337 {
 338         get_colorbool_found = -1;
 339         get_diff_color_found = -1;
 340         get_color_ui_found = -1;
 341         git_config_with_options(git_get_colorbool_config, NULL,
 342                                 given_config_file, given_config_blob,
 343                                 respect_includes);
 344
 345         if (get_colorbool_found < 0) {
 346                 if (!strcmp(get_colorbool_slot, "color.diff"))
 347                         get_colorbool_found = get_diff_color_found;
 348                 if (get_colorbool_found < 0)
 349                         get_colorbool_found = get_color_ui_found;
 350         }
 351
 352         if (get_colorbool_found < 0)
 353                 /* default value if none found in config */
 354                 get_colorbool_found = GIT_COLOR_AUTO;
 355
 356         get_colorbool_found = want_color(get_colorbool_found);
 357
 358         if (print) {
 359                 printf("%s\n", get_colorbool_found ? "true" : "false");
 360                 return 0;
 361         } else
 362                 return get_colorbool_found ? 0 : 1;
 363 }
 364
 365 static void check_blob_write(void)
 366 {
 367         if (given_config_blob)
 368                 die("writing config blobs is not supported");
 369 }
 370
 371 struct urlmatch_current_candidate_value {
 372         char value_is_null;
 373         struct strbuf value;
 374 };
 375
 376 static int urlmatch_collect_fn(const char *var, const char *value, void *cb)
 377 {
 378         struct string_list *values = cb;
 379         struct string_list_item *item = string_list_insert(values, var);
 380         struct urlmatch_current_candidate_value *matched = item->util;
 381
 382         if (!matched) {
 383                 matched = xmalloc(sizeof(*matched));
 384                 strbuf_init(&matched->value, 0);
 385                 item->util = matched;
 386         } else {
 387                 strbuf_reset(&matched->value);
 388         }
 389
 390         if (value) {
 391                 strbuf_addstr(&matched->value, value);
 392                 matched->value_is_null = 0;
 393         } else {
 394                 matched->value_is_null = 1;
 395         }
 396         return 0;
 397 }
 398
 399 static char *dup_downcase(const char *string)
 400 {
 401         char *result;
 402         size_t len, i;
 403
 404         len = strlen(string);
 405         result = xmalloc(len + 1);
 406         for (i = 0; i < len; i++)
 407                 result[i] = tolower(string[i]);
 408         result[i] = '\0';
 409         return result;
 410 }
 411
 412 static int get_urlmatch(const char *var, const char *url)
 413 {
 414         char *section_tail;
 415         struct string_list_item *item;
 416         struct urlmatch_config config = { STRING_LIST_INIT_DUP };
 417         struct string_list values = STRING_LIST_INIT_DUP;
 418
 419         config.collect_fn = urlmatch_collect_fn;
 420         config.cascade_fn = NULL;
 421         config.cb = &values;
 422
 423         if (!url_normalize(url, &config.url))
 424                 die("%s", config.url.err);
 425
 426         config.section = dup_downcase(var);
 427         section_tail = strchr(config.section, '.');
 428         if (section_tail) {
 429                 *section_tail = '\0';
 430                 config.key = section_tail + 1;
 431                 show_keys = 0;
 432         } else {
 433                 config.key = NULL;
 434                 show_keys = 1;
 435         }
 436
 437         git_config_with_options(urlmatch_config_entry, &config,
 438                                 given_config_file, NULL, respect_includes);
 439
 440         for_each_string_list_item(item, &values) {
 441                 struct urlmatch_current_candidate_value *matched = item->util;
 442                 struct strbuf key = STRBUF_INIT;
 443                 struct strbuf buf = STRBUF_INIT;
 444
 445                 strbuf_addstr(&key, item->string);
 446                 format_config(&buf, key.buf,
 447                               matched->value_is_null ? NULL : matched->value.buf);
 448                 fwrite(buf.buf, 1, buf.len, stdout);
 449                 strbuf_release(&key);
 450                 strbuf_release(&buf);
 451
 452                 strbuf_release(&matched->value);
 453         }
 454         string_list_clear(&config.vars, 1);
 455         string_list_clear(&values, 1);
 456         free(config.url.url);
 457
 458         free((void *)config.section);
 459         return 0;
 460 }
 461
 462 int cmd_config(int argc, const char **argv, const char *prefix)
 463 {
 464         int nongit = !startup_info->have_repository;
 465         char *value;
 466
 467         given_config_file = getenv(CONFIG_ENVIRONMENT);
 468
 469         argc = parse_options(argc, argv, prefix, builtin_config_options,
 470                              builtin_config_usage,
 471                              PARSE_OPT_STOP_AT_NON_OPTION);
 472
 473         if (use_global_config + use_system_config + use_local_config +
 474             !!given_config_file + !!given_config_blob > 1) {
 475                 error("only one config file at a time.");
 476                 usage_with_options(builtin_config_usage, builtin_config_options);
 477         }
 478
 479         if (use_global_config) {
 480                 char *user_config = NULL;
 481                 char *xdg_config = NULL;
 482
 483                 home_config_paths(&user_config, &xdg_config, "config");
 484
 485                 if (!user_config)
 486                         /*
 487                          * It is unknown if HOME/.gitconfig exists, so
 488                          * we do not know if we should write to XDG
 489                          * location; error out even if XDG_CONFIG_HOME
 490                          * is set and points at a sane location.
 491                          */
 492                         die("$HOME not set");
 493
 494                 if (access_or_warn(user_config, R_OK, 0) &&
 495                     xdg_config && !access_or_warn(xdg_config, R_OK, 0))
 496                         given_config_file = xdg_config;
 497                 else
 498                         given_config_file = user_config;
 499         }
 500         else if (use_system_config)
 501                 given_config_file = git_etc_gitconfig();
 502         else if (use_local_config)
 503                 given_config_file = git_pathdup("config");
 504         else if (given_config_file) {
 505                 if (!is_absolute_path(given_config_file) && prefix)
 506                         given_config_file =
 507                                 xstrdup(prefix_filename(prefix,
 508                                                         strlen(prefix),
 509                                                         given_config_file));
 510         }
 511
 512         if (respect_includes == -1)
 513                 respect_includes = !given_config_file;
 514
 515         if (end_null) {
 516                 term = '\0';
 517                 delim = '\n';
 518                 key_delim = '\n';
 519         }
 520
 521         if (HAS_MULTI_BITS(types)) {
 522                 error("only one type at a time.");
 523                 usage_with_options(builtin_config_usage, builtin_config_options);
 524         }
 525
 526         if (get_color_slot)
 527             actions |= ACTION_GET_COLOR;
 528         if (get_colorbool_slot)
 529             actions |= ACTION_GET_COLORBOOL;
 530
 531         if ((get_color_slot || get_colorbool_slot) && types) {
 532                 error("--get-color and variable type are incoherent");
 533                 usage_with_options(builtin_config_usage, builtin_config_options);
 534         }
 535
 536         if (HAS_MULTI_BITS(actions)) {
 537                 error("only one action at a time.");
 538                 usage_with_options(builtin_config_usage, builtin_config_options);
 539         }
 540         if (actions == 0)
 541                 switch (argc) {
 542                 case 1: actions = ACTION_GET; break;
 543                 case 2: actions = ACTION_SET; break;
 544                 case 3: actions = ACTION_SET_ALL; break;
 545                 default:
 546                         usage_with_options(builtin_config_usage, builtin_config_options);
 547                 }
 548
 549         if (actions == ACTION_LIST) {
 550                 check_argc(argc, 0, 0);
 551                 if (git_config_with_options(show_all_config, NULL,
 552                                             given_config_file,
 553                                             given_config_blob,
 554                                             respect_includes) < 0) {
 555                         if (given_config_file)
 556                                 die_errno("unable to read config file '%s'",
 557                                           given_config_file);
 558                         else
 559                                 die("error processing config file(s)");
 560                 }
 561         }
 562         else if (actions == ACTION_EDIT) {
 563                 check_argc(argc, 0, 0);
 564                 if (!given_config_file && nongit)
 565                         die("not in a git directory");
 566                 if (given_config_blob)
 567                         die("editing blobs is not supported");
 568                 git_config(git_default_config, NULL);
 569                 launch_editor(given_config_file ?
 570                               given_config_file : git_path("config"),
 571                               NULL, NULL);
 572         }
 573         else if (actions == ACTION_SET) {
 574                 int ret;
 575                 check_blob_write();
 576                 check_argc(argc, 2, 2);
 577                 value = normalize_value(argv[0], argv[1]);
 578                 ret = git_config_set_in_file(given_config_file, argv[0], value);
 579                 if (ret == CONFIG_NOTHING_SET)
 580                         error("cannot overwrite multiple values with a single value\n"
 581                         "       Use a regexp, --add or --replace-all to change %s.", argv[0]);
 582                 return ret;
 583         }
 584         else if (actions == ACTION_SET_ALL) {
 585                 check_blob_write();
 586                 check_argc(argc, 2, 3);
 587                 value = normalize_value(argv[0], argv[1]);
 588                 return git_config_set_multivar_in_file(given_config_file,
 589                                                        argv[0], value, argv[2], 0);
 590         }
 591         else if (actions == ACTION_ADD) {
 592                 check_blob_write();
 593                 check_argc(argc, 2, 2);
 594                 value = normalize_value(argv[0], argv[1]);
 595                 return git_config_set_multivar_in_file(given_config_file,
 596                                                        argv[0], value, "^$", 0);
 597         }
 598         else if (actions == ACTION_REPLACE_ALL) {
 599                 check_blob_write();
 600                 check_argc(argc, 2, 3);
 601                 value = normalize_value(argv[0], argv[1]);
 602                 return git_config_set_multivar_in_file(given_config_file,
 603                                                        argv[0], value, argv[2], 1);
 604         }
 605         else if (actions == ACTION_GET) {
 606                 check_argc(argc, 1, 2);
 607                 return get_value(argv[0], argv[1]);
 608         }
 609         else if (actions == ACTION_GET_ALL) {
 610                 do_all = 1;
 611                 check_argc(argc, 1, 2);
 612                 return get_value(argv[0], argv[1]);
 613         }
 614         else if (actions == ACTION_GET_REGEXP) {
 615                 show_keys = 1;
 616                 use_key_regexp = 1;
 617                 do_all = 1;
 618                 check_argc(argc, 1, 2);
 619                 return get_value(argv[0], argv[1]);
 620         }
 621         else if (actions == ACTION_GET_URLMATCH) {
 622                 check_argc(argc, 2, 2);
 623                 return get_urlmatch(argv[0], argv[1]);
 624         }
 625         else if (actions == ACTION_UNSET) {
 626                 check_blob_write();
 627                 check_argc(argc, 1, 2);
 628                 if (argc == 2)
 629                         return git_config_set_multivar_in_file(given_config_file,
 630                                                                argv[0], NULL, argv[1], 0);
 631                 else
 632                         return git_config_set_in_file(given_config_file,
 633                                                       argv[0], NULL);
 634         }
 635         else if (actions == ACTION_UNSET_ALL) {
 636                 check_blob_write();
 637                 check_argc(argc, 1, 2);
 638                 return git_config_set_multivar_in_file(given_config_file,
 639                                                        argv[0], NULL, argv[1], 1);
 640         }
 641         else if (actions == ACTION_RENAME_SECTION) {
 642                 int ret;
 643                 check_blob_write();
 644                 check_argc(argc, 2, 2);
 645                 ret = git_config_rename_section_in_file(given_config_file,
 646                                                         argv[0], argv[1]);
 647                 if (ret < 0)
 648                         return ret;
 649                 if (ret == 0)
 650                         die("No such section!");
 651         }
 652         else if (actions == ACTION_REMOVE_SECTION) {
 653                 int ret;
 654                 check_blob_write();
 655                 check_argc(argc, 1, 1);
 656                 ret = git_config_rename_section_in_file(given_config_file,
 657                                                         argv[0], NULL);
 658                 if (ret < 0)
 659                         return ret;
 660                 if (ret == 0)
 661                         die("No such section!");
 662         }
 663         else if (actions == ACTION_GET_COLOR) {
 664                 get_color(argv[0]);
 665         }
 666         else if (actions == ACTION_GET_COLORBOOL) {
 667                 if (argc == 1)
 668                         color_stdout_is_tty = git_config_bool("command line", argv[0]);
 669                 return get_colorbool(argc != 0);
 670         }
 671
 672         return 0;
 673 }