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 struct git_config_source given_config_source;
  25 static int actions, types;
  26 static const char *get_color_slot, *get_colorbool_slot;
  27 static int end_null;
  28 static 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
  52 static 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
  85 static 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
  92 static 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
 101 struct strbuf_list {
 102         struct strbuf *items;
 103         int nr;
 104         int alloc;
 105 };
 106
 107 static 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
 154 static 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
 171 static 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
 238 free_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
 252 static 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
 289 static int get_color_found;
 290 static const char *get_color_slot;
 291 static const char *get_colorbool_slot;
 292 static char parsed_color[COLOR_MAXLEN];
 293
 294 static 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
 305 static 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
 318 static int get_colorbool_found;
 319 static int get_diff_color_found;
 320 static int get_color_ui_found;
 321 static 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
 333 static 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
 361 static void check_write(void)
 362 {
 363         if (given_config_source.blob)
 364                 die("writing config blobs is not supported");
 365 }
 366
 367 struct urlmatch_current_candidate_value {
 368         char value_is_null;
 369         struct strbuf value;
 370 };
 371
 372 static int urlmatch_collect_fn(const char *var, const char *value, void *cb)
 373 {
 374         struct string_list *values = cb;
 375         struct string_list_item *item = string_list_insert(values, var);
 376         struct urlmatch_current_candidate_value *matched = item->util;
 377
 378         if (!matched) {
 379                 matched = xmalloc(sizeof(*matched));
 380                 strbuf_init(&matched->value, 0);
 381                 item->util = matched;
 382         } else {
 383                 strbuf_reset(&matched->value);
 384         }
 385
 386         if (value) {
 387                 strbuf_addstr(&matched->value, value);
 388                 matched->value_is_null = 0;
 389         } else {
 390                 matched->value_is_null = 1;
 391         }
 392         return 0;
 393 }
 394
 395 static char *dup_downcase(const char *string)
 396 {
 397         char *result;
 398         size_t len, i;
 399
 400         len = strlen(string);
 401         result = xmalloc(len + 1);
 402         for (i = 0; i < len; i++)
 403                 result[i] = tolower(string[i]);
 404         result[i] = '\0';
 405         return result;
 406 }
 407
 408 static int get_urlmatch(const char *var, const char *url)
 409 {
 410         char *section_tail;
 411         struct string_list_item *item;
 412         struct urlmatch_config config = { STRING_LIST_INIT_DUP };
 413         struct string_list values = STRING_LIST_INIT_DUP;
 414
 415         config.collect_fn = urlmatch_collect_fn;
 416         config.cascade_fn = NULL;
 417         config.cb = &values;
 418
 419         if (!url_normalize(url, &config.url))
 420                 die("%s", config.url.err);
 421
 422         config.section = dup_downcase(var);
 423         section_tail = strchr(config.section, '.');
 424         if (section_tail) {
 425                 *section_tail = '\0';
 426                 config.key = section_tail + 1;
 427                 show_keys = 0;
 428         } else {
 429                 config.key = NULL;
 430                 show_keys = 1;
 431         }
 432
 433         git_config_with_options(urlmatch_config_entry, &config,
 434                                 &given_config_source, respect_includes);
 435
 436         for_each_string_list_item(item, &values) {
 437                 struct urlmatch_current_candidate_value *matched = item->util;
 438                 struct strbuf key = STRBUF_INIT;
 439                 struct strbuf buf = STRBUF_INIT;
 440
 441                 strbuf_addstr(&key, item->string);
 442                 format_config(&buf, key.buf,
 443                               matched->value_is_null ? NULL : matched->value.buf);
 444                 fwrite(buf.buf, 1, buf.len, stdout);
 445                 strbuf_release(&key);
 446                 strbuf_release(&buf);
 447
 448                 strbuf_release(&matched->value);
 449         }
 450         string_list_clear(&config.vars, 1);
 451         string_list_clear(&values, 1);
 452         free(config.url.url);
 453
 454         free((void *)config.section);
 455         return 0;
 456 }
 457
 458 int cmd_config(int argc, const char **argv, const char *prefix)
 459 {
 460         int nongit = !startup_info->have_repository;
 461         char *value;
 462
 463         given_config_source.file = getenv(CONFIG_ENVIRONMENT);
 464
 465         argc = parse_options(argc, argv, prefix, builtin_config_options,
 466                              builtin_config_usage,
 467                              PARSE_OPT_STOP_AT_NON_OPTION);
 468
 469         if (use_global_config + use_system_config + use_local_config +
 470             !!given_config_source.file + !!given_config_source.blob > 1) {
 471                 error("only one config file at a time.");
 472                 usage_with_options(builtin_config_usage, builtin_config_options);
 473         }
 474
 475         if (use_global_config) {
 476                 char *user_config = NULL;
 477                 char *xdg_config = NULL;
 478
 479                 home_config_paths(&user_config, &xdg_config, "config");
 480
 481                 if (!user_config)
 482                         /*
 483                          * It is unknown if HOME/.gitconfig exists, so
 484                          * we do not know if we should write to XDG
 485                          * location; error out even if XDG_CONFIG_HOME
 486                          * is set and points at a sane location.
 487                          */
 488                         die("$HOME not set");
 489
 490                 if (access_or_warn(user_config, R_OK, 0) &&
 491                     xdg_config && !access_or_warn(xdg_config, R_OK, 0))
 492                         given_config_source.file = xdg_config;
 493                 else
 494                         given_config_source.file = user_config;
 495         }
 496         else if (use_system_config)
 497                 given_config_source.file = git_etc_gitconfig();
 498         else if (use_local_config)
 499                 given_config_source.file = git_pathdup("config");
 500         else if (given_config_source.file) {
 501                 if (!is_absolute_path(given_config_source.file) && prefix)
 502                         given_config_source.file =
 503                                 xstrdup(prefix_filename(prefix,
 504                                                         strlen(prefix),
 505                                                         given_config_source.file));
 506         }
 507
 508         if (respect_includes == -1)
 509                 respect_includes = !given_config_source.file;
 510
 511         if (end_null) {
 512                 term = '\0';
 513                 delim = '\n';
 514                 key_delim = '\n';
 515         }
 516
 517         if (HAS_MULTI_BITS(types)) {
 518                 error("only one type at a time.");
 519                 usage_with_options(builtin_config_usage, builtin_config_options);
 520         }
 521
 522         if (get_color_slot)
 523             actions |= ACTION_GET_COLOR;
 524         if (get_colorbool_slot)
 525             actions |= ACTION_GET_COLORBOOL;
 526
 527         if ((get_color_slot || get_colorbool_slot) && types) {
 528                 error("--get-color and variable type are incoherent");
 529                 usage_with_options(builtin_config_usage, builtin_config_options);
 530         }
 531
 532         if (HAS_MULTI_BITS(actions)) {
 533                 error("only one action at a time.");
 534                 usage_with_options(builtin_config_usage, builtin_config_options);
 535         }
 536         if (actions == 0)
 537                 switch (argc) {
 538                 case 1: actions = ACTION_GET; break;
 539                 case 2: actions = ACTION_SET; break;
 540                 case 3: actions = ACTION_SET_ALL; break;
 541                 default:
 542                         usage_with_options(builtin_config_usage, builtin_config_options);
 543                 }
 544
 545         if (actions == ACTION_LIST) {
 546                 check_argc(argc, 0, 0);
 547                 if (git_config_with_options(show_all_config, NULL,
 548                                             &given_config_source,
 549                                             respect_includes) < 0) {
 550                         if (given_config_source.file)
 551                                 die_errno("unable to read config file '%s'",
 552                                           given_config_source.file);
 553                         else
 554                                 die("error processing config file(s)");
 555                 }
 556         }
 557         else if (actions == ACTION_EDIT) {
 558                 check_argc(argc, 0, 0);
 559                 if (!given_config_source.file && nongit)
 560                         die("not in a git directory");
 561                 if (given_config_source.blob)
 562                         die("editing blobs is not supported");
 563                 git_config(git_default_config, NULL);
 564                 launch_editor(given_config_source.file ?
 565                               given_config_source.file : git_path("config"),
 566                               NULL, NULL);
 567         }
 568         else if (actions == ACTION_SET) {
 569                 int ret;
 570                 check_write();
 571                 check_argc(argc, 2, 2);
 572                 value = normalize_value(argv[0], argv[1]);
 573                 ret = git_config_set_in_file(given_config_source.file, argv[0], value);
 574                 if (ret == CONFIG_NOTHING_SET)
 575                         error("cannot overwrite multiple values with a single value\n"
 576                         "       Use a regexp, --add or --replace-all to change %s.", argv[0]);
 577                 return ret;
 578         }
 579         else if (actions == ACTION_SET_ALL) {
 580                 check_write();
 581                 check_argc(argc, 2, 3);
 582                 value = normalize_value(argv[0], argv[1]);
 583                 return git_config_set_multivar_in_file(given_config_source.file,
 584                                                        argv[0], value, argv[2], 0);
 585         }
 586         else if (actions == ACTION_ADD) {
 587                 check_write();
 588                 check_argc(argc, 2, 2);
 589                 value = normalize_value(argv[0], argv[1]);
 590                 return git_config_set_multivar_in_file(given_config_source.file,
 591                                                        argv[0], value, "^$", 0);
 592         }
 593         else if (actions == ACTION_REPLACE_ALL) {
 594                 check_write();
 595                 check_argc(argc, 2, 3);
 596                 value = normalize_value(argv[0], argv[1]);
 597                 return git_config_set_multivar_in_file(given_config_source.file,
 598                                                        argv[0], value, argv[2], 1);
 599         }
 600         else if (actions == ACTION_GET) {
 601                 check_argc(argc, 1, 2);
 602                 return get_value(argv[0], argv[1]);
 603         }
 604         else if (actions == ACTION_GET_ALL) {
 605                 do_all = 1;
 606                 check_argc(argc, 1, 2);
 607                 return get_value(argv[0], argv[1]);
 608         }
 609         else if (actions == ACTION_GET_REGEXP) {
 610                 show_keys = 1;
 611                 use_key_regexp = 1;
 612                 do_all = 1;
 613                 check_argc(argc, 1, 2);
 614                 return get_value(argv[0], argv[1]);
 615         }
 616         else if (actions == ACTION_GET_URLMATCH) {
 617                 check_argc(argc, 2, 2);
 618                 return get_urlmatch(argv[0], argv[1]);
 619         }
 620         else if (actions == ACTION_UNSET) {
 621                 check_write();
 622                 check_argc(argc, 1, 2);
 623                 if (argc == 2)
 624                         return git_config_set_multivar_in_file(given_config_source.file,
 625                                                                argv[0], NULL, argv[1], 0);
 626                 else
 627                         return git_config_set_in_file(given_config_source.file,
 628                                                       argv[0], NULL);
 629         }
 630         else if (actions == ACTION_UNSET_ALL) {
 631                 check_write();
 632                 check_argc(argc, 1, 2);
 633                 return git_config_set_multivar_in_file(given_config_source.file,
 634                                                        argv[0], NULL, argv[1], 1);
 635         }
 636         else if (actions == ACTION_RENAME_SECTION) {
 637                 int ret;
 638                 check_write();
 639                 check_argc(argc, 2, 2);
 640                 ret = git_config_rename_section_in_file(given_config_source.file,
 641                                                         argv[0], argv[1]);
 642                 if (ret < 0)
 643                         return ret;
 644                 if (ret == 0)
 645                         die("No such section!");
 646         }
 647         else if (actions == ACTION_REMOVE_SECTION) {
 648                 int ret;
 649                 check_write();
 650                 check_argc(argc, 1, 1);
 651                 ret = git_config_rename_section_in_file(given_config_source.file,
 652                                                         argv[0], NULL);
 653                 if (ret < 0)
 654                         return ret;
 655                 if (ret == 0)
 656                         die("No such section!");
 657         }
 658         else if (actions == ACTION_GET_COLOR) {
 659                 get_color(argv[0]);
 660         }
 661         else if (actions == ACTION_GET_COLORBOOL) {
 662                 if (argc == 1)
 663                         color_stdout_is_tty = git_config_bool("command line", argv[0]);
 664                 return get_colorbool(argc != 0);
 665         }
 666
 667         return 0;
 668 }