git.oblomov.eu Git - git/blob - 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 int end_null;
  27 static int respect_includes = -1;
  28
  29 #define ACTION_GET (1<<0)
  30 #define ACTION_GET_ALL (1<<1)
  31 #define ACTION_GET_REGEXP (1<<2)
  32 #define ACTION_REPLACE_ALL (1<<3)
  33 #define ACTION_ADD (1<<4)
  34 #define ACTION_UNSET (1<<5)
  35 #define ACTION_UNSET_ALL (1<<6)
  36 #define ACTION_RENAME_SECTION (1<<7)
  37 #define ACTION_REMOVE_SECTION (1<<8)
  38 #define ACTION_LIST (1<<9)
  39 #define ACTION_EDIT (1<<10)
  40 #define ACTION_SET (1<<11)
  41 #define ACTION_SET_ALL (1<<12)
  42 #define ACTION_GET_COLOR (1<<13)
  43 #define ACTION_GET_COLORBOOL (1<<14)
  44 #define ACTION_GET_URLMATCH (1<<15)
  45
  46 #define TYPE_BOOL (1<<0)
  47 #define TYPE_INT (1<<1)
  48 #define TYPE_BOOL_OR_INT (1<<2)
  49 #define TYPE_PATH (1<<3)
  50
  51 static struct option builtin_config_options[] = {
  52         OPT_GROUP(N_("Config file location")),
  53         OPT_BOOL(0, "global", &use_global_config, N_("use global config file")),
  54         OPT_BOOL(0, "system", &use_system_config, N_("use system config file")),
  55         OPT_BOOL(0, "local", &use_local_config, N_("use repository config file")),
  56         OPT_STRING('f', "file", &given_config_source.file, N_("file"), N_("use given config file")),
  57         OPT_STRING(0, "blob", &given_config_source.blob, N_("blob-id"), N_("read config from given blob object")),
  58         OPT_GROUP(N_("Action")),
  59         OPT_BIT(0, "get", &actions, N_("get value: name [value-regex]"), ACTION_GET),
  60         OPT_BIT(0, "get-all", &actions, N_("get all values: key [value-regex]"), ACTION_GET_ALL),
  61         OPT_BIT(0, "get-regexp", &actions, N_("get values for regexp: name-regex [value-regex]"), ACTION_GET_REGEXP),
  62         OPT_BIT(0, "get-urlmatch", &actions, N_("get value specific for the URL: section[.var] URL"), ACTION_GET_URLMATCH),
  63         OPT_BIT(0, "replace-all", &actions, N_("replace all matching variables: name value [value_regex]"), ACTION_REPLACE_ALL),
  64         OPT_BIT(0, "add", &actions, N_("add a new variable: name value"), ACTION_ADD),
  65         OPT_BIT(0, "unset", &actions, N_("remove a variable: name [value-regex]"), ACTION_UNSET),
  66         OPT_BIT(0, "unset-all", &actions, N_("remove all matches: name [value-regex]"), ACTION_UNSET_ALL),
  67         OPT_BIT(0, "rename-section", &actions, N_("rename section: old-name new-name"), ACTION_RENAME_SECTION),
  68         OPT_BIT(0, "remove-section", &actions, N_("remove a section: name"), ACTION_REMOVE_SECTION),
  69         OPT_BIT('l', "list", &actions, N_("list all"), ACTION_LIST),
  70         OPT_BIT('e', "edit", &actions, N_("open an editor"), ACTION_EDIT),
  71         OPT_BIT(0, "get-color", &actions, N_("find the color configured: slot [default]"), ACTION_GET_COLOR),
  72         OPT_BIT(0, "get-colorbool", &actions, N_("find the color setting: slot [stdout-is-tty]"), ACTION_GET_COLORBOOL),
  73         OPT_GROUP(N_("Type")),
  74         OPT_BIT(0, "bool", &types, N_("value is \"true\" or \"false\""), TYPE_BOOL),
  75         OPT_BIT(0, "int", &types, N_("value is decimal number"), TYPE_INT),
  76         OPT_BIT(0, "bool-or-int", &types, N_("value is --bool or --int"), TYPE_BOOL_OR_INT),
  77         OPT_BIT(0, "path", &types, N_("value is a path (file or directory name)"), TYPE_PATH),
  78         OPT_GROUP(N_("Other")),
  79         OPT_BOOL('z', "null", &end_null, N_("terminate values with NUL byte")),
  80         OPT_BOOL(0, "includes", &respect_includes, N_("respect include directives on lookup")),
  81         OPT_END(),
  82 };
  83
  84 static void check_argc(int argc, int min, int max) {
  85         if (argc >= min && argc <= max)
  86                 return;
  87         error("wrong number of arguments");
  88         usage_with_options(builtin_config_usage, builtin_config_options);
  89 }
  90
  91 static int show_all_config(const char *key_, const char *value_, void *cb)
  92 {
  93         if (value_)
  94                 printf("%s%c%s%c", key_, delim, value_, term);
  95         else
  96                 printf("%s%c", key_, term);
  97         return 0;
  98 }
  99
 100 struct strbuf_list {
 101         struct strbuf *items;
 102         int nr;
 103         int alloc;
 104 };
 105
 106 static int format_config(struct strbuf *buf, const char *key_, const char *value_)
 107 {
 108         int must_free_vptr = 0;
 109         int must_print_delim = 0;
 110         char value[256];
 111         const char *vptr = value;
 112
 113         strbuf_init(buf, 0);
 114
 115         if (show_keys) {
 116                 strbuf_addstr(buf, key_);
 117                 must_print_delim = 1;
 118         }
 119         if (types == TYPE_INT)
 120                 sprintf(value, "%"PRId64,
 121                         git_config_int64(key_, value_ ? value_ : ""));
 122         else if (types == TYPE_BOOL)
 123                 vptr = git_config_bool(key_, value_) ? "true" : "false";
 124         else if (types == TYPE_BOOL_OR_INT) {
 125                 int is_bool, v;
 126                 v = git_config_bool_or_int(key_, value_, &is_bool);
 127                 if (is_bool)
 128                         vptr = v ? "true" : "false";
 129                 else
 130                         sprintf(value, "%d", v);
 131         } else if (types == TYPE_PATH) {
 132                 if (git_config_pathname(&vptr, key_, value_) < 0)
 133                         return -1;
 134                 must_free_vptr = 1;
 135         } else if (value_) {
 136                 vptr = value_;
 137         } else {
 138                 /* Just show the key name */
 139                 vptr = "";
 140                 must_print_delim = 0;
 141         }
 142
 143         if (must_print_delim)
 144                 strbuf_addch(buf, key_delim);
 145         strbuf_addstr(buf, vptr);
 146         strbuf_addch(buf, term);
 147
 148         if (must_free_vptr)
 149                 free((char *)vptr);
 150         return 0;
 151 }
 152
 153 static int collect_config(const char *key_, const char *value_, void *cb)
 154 {
 155         struct strbuf_list *values = cb;
 156
 157         if (!use_key_regexp && strcmp(key_, key))
 158                 return 0;
 159         if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
 160                 return 0;
 161         if (regexp != NULL &&
 162             (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
 163                 return 0;
 164
 165         ALLOC_GROW(values->items, values->nr + 1, values->alloc);
 166
 167         return format_config(&values->items[values->nr++], key_, value_);
 168 }
 169
 170 static int get_value(const char *key_, const char *regex_)
 171 {
 172         int ret = CONFIG_GENERIC_ERROR;
 173         struct strbuf_list values = {NULL};
 174         int i;
 175
 176         if (use_key_regexp) {
 177                 char *tl;
 178
 179                 /*
 180                  * NEEDSWORK: this naive pattern lowercasing obviously does not
 181                  * work for more complex patterns like "^[^.]*Foo.*bar".
 182                  * Perhaps we should deprecate this altogether someday.
 183                  */
 184
 185                 key = xstrdup(key_);
 186                 for (tl = key + strlen(key) - 1;
 187                      tl >= key && *tl != '.';
 188                      tl--)
 189                         *tl = tolower(*tl);
 190                 for (tl = key; *tl && *tl != '.'; tl++)
 191                         *tl = tolower(*tl);
 192
 193                 key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
 194                 if (regcomp(key_regexp, key, REG_EXTENDED)) {
 195                         fprintf(stderr, "Invalid key pattern: %s\n", key_);
 196                         free(key_regexp);
 197                         key_regexp = NULL;
 198                         ret = CONFIG_INVALID_PATTERN;
 199                         goto free_strings;
 200                 }
 201         } else {
 202                 if (git_config_parse_key(key_, &key, NULL)) {
 203                         ret = CONFIG_INVALID_KEY;
 204                         goto free_strings;
 205                 }
 206         }
 207
 208         if (regex_) {
 209                 if (regex_[0] == '!') {
 210                         do_not_match = 1;
 211                         regex_++;
 212                 }
 213
 214                 regexp = (regex_t*)xmalloc(sizeof(regex_t));
 215                 if (regcomp(regexp, regex_, REG_EXTENDED)) {
 216                         fprintf(stderr, "Invalid pattern: %s\n", regex_);
 217                         free(regexp);
 218                         regexp = NULL;
 219                         ret = CONFIG_INVALID_PATTERN;
 220                         goto free_strings;
 221                 }
 222         }
 223
 224         git_config_with_options(collect_config, &values,
 225                                 &given_config_source, respect_includes);
 226
 227         ret = !values.nr;
 228
 229         for (i = 0; i < values.nr; i++) {
 230                 struct strbuf *buf = values.items + i;
 231                 if (do_all || i == values.nr - 1)
 232                         fwrite(buf->buf, 1, buf->len, stdout);
 233                 strbuf_release(buf);
 234         }
 235         free(values.items);
 236
 237 free_strings:
 238         free(key);
 239         if (key_regexp) {
 240                 regfree(key_regexp);
 241                 free(key_regexp);
 242         }
 243         if (regexp) {
 244                 regfree(regexp);
 245                 free(regexp);
 246         }
 247
 248         return ret;
 249 }
 250
 251 static char *normalize_value(const char *key, const char *value)
 252 {
 253         char *normalized;
 254
 255         if (!value)
 256                 return NULL;
 257
 258         if (types == 0 || types == TYPE_PATH)
 259                 /*
 260                  * We don't do normalization for TYPE_PATH here: If
 261                  * the path is like ~/foobar/, we prefer to store
 262                  * "~/foobar/" in the config file, and to expand the ~
 263                  * when retrieving the value.
 264                  */
 265                 normalized = xstrdup(value);
 266         else {
 267                 normalized = xmalloc(64);
 268                 if (types == TYPE_INT) {
 269                         int64_t v = git_config_int64(key, value);
 270                         sprintf(normalized, "%"PRId64, v);
 271                 }
 272                 else if (types == TYPE_BOOL)
 273                         sprintf(normalized, "%s",
 274                                 git_config_bool(key, value) ? "true" : "false");
 275                 else if (types == TYPE_BOOL_OR_INT) {
 276                         int is_bool, v;
 277                         v = git_config_bool_or_int(key, value, &is_bool);
 278                         if (!is_bool)
 279                                 sprintf(normalized, "%d", v);
 280                         else
 281                                 sprintf(normalized, "%s", v ? "true" : "false");
 282                 }
 283         }
 284
 285         return normalized;
 286 }
 287
 288 static int get_color_found;
 289 static const char *get_color_slot;
 290 static const char *get_colorbool_slot;
 291 static char parsed_color[COLOR_MAXLEN];
 292
 293 static int git_get_color_config(const char *var, const char *value, void *cb)
 294 {
 295         if (!strcmp(var, get_color_slot)) {
 296                 if (!value)
 297                         config_error_nonbool(var);
 298                 if (color_parse(value, parsed_color) < 0)
 299                         return -1;
 300                 get_color_found = 1;
 301         }
 302         return 0;
 303 }
 304
 305 static void get_color(const char *var, const char *def_color)
 306 {
 307         get_color_slot = var;
 308         get_color_found = 0;
 309         parsed_color[0] = '\0';
 310         git_config_with_options(git_get_color_config, NULL,
 311                                 &given_config_source, respect_includes);
 312
 313         if (!get_color_found && def_color) {
 314                 if (color_parse(def_color, parsed_color) < 0)
 315                         die(_("unable to parse default color value"));
 316         }
 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(const char *var, int print)
 337 {
 338         get_colorbool_slot = var;
 339         get_colorbool_found = -1;
 340         get_diff_color_found = -1;
 341         get_color_ui_found = -1;
 342         git_config_with_options(git_get_colorbool_config, NULL,
 343                                 &given_config_source, 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_write(void)
 366 {
 367         if (given_config_source.use_stdin)
 368                 die("writing to stdin is not supported");
 369
 370         if (given_config_source.blob)
 371                 die("writing config blobs is not supported");
 372 }
 373
 374 struct urlmatch_current_candidate_value {
 375         char value_is_null;
 376         struct strbuf value;
 377 };
 378
 379 static int urlmatch_collect_fn(const char *var, const char *value, void *cb)
 380 {
 381         struct string_list *values = cb;
 382         struct string_list_item *item = string_list_insert(values, var);
 383         struct urlmatch_current_candidate_value *matched = item->util;
 384
 385         if (!matched) {
 386                 matched = xmalloc(sizeof(*matched));
 387                 strbuf_init(&matched->value, 0);
 388                 item->util = matched;
 389         } else {
 390                 strbuf_reset(&matched->value);
 391         }
 392
 393         if (value) {
 394                 strbuf_addstr(&matched->value, value);
 395                 matched->value_is_null = 0;
 396         } else {
 397                 matched->value_is_null = 1;
 398         }
 399         return 0;
 400 }
 401
 402 static int get_urlmatch(const char *var, const char *url)
 403 {
 404         char *section_tail;
 405         struct string_list_item *item;
 406         struct urlmatch_config config = { STRING_LIST_INIT_DUP };
 407         struct string_list values = STRING_LIST_INIT_DUP;
 408
 409         config.collect_fn = urlmatch_collect_fn;
 410         config.cascade_fn = NULL;
 411         config.cb = &values;
 412
 413         if (!url_normalize(url, &config.url))
 414                 die("%s", config.url.err);
 415
 416         config.section = xstrdup_tolower(var);
 417         section_tail = strchr(config.section, '.');
 418         if (section_tail) {
 419                 *section_tail = '\0';
 420                 config.key = section_tail + 1;
 421                 show_keys = 0;
 422         } else {
 423                 config.key = NULL;
 424                 show_keys = 1;
 425         }
 426
 427         git_config_with_options(urlmatch_config_entry, &config,
 428                                 &given_config_source, respect_includes);
 429
 430         for_each_string_list_item(item, &values) {
 431                 struct urlmatch_current_candidate_value *matched = item->util;
 432                 struct strbuf key = STRBUF_INIT;
 433                 struct strbuf buf = STRBUF_INIT;
 434
 435                 strbuf_addstr(&key, item->string);
 436                 format_config(&buf, key.buf,
 437                               matched->value_is_null ? NULL : matched->value.buf);
 438                 fwrite(buf.buf, 1, buf.len, stdout);
 439                 strbuf_release(&key);
 440                 strbuf_release(&buf);
 441
 442                 strbuf_release(&matched->value);
 443         }
 444         string_list_clear(&config.vars, 1);
 445         string_list_clear(&values, 1);
 446         free(config.url.url);
 447
 448         free((void *)config.section);
 449         return 0;
 450 }
 451
 452 static char *default_user_config(void)
 453 {
 454         struct strbuf buf = STRBUF_INIT;
 455         strbuf_addf(&buf,
 456                     _("# This is Git's per-user configuration file.\n"
 457                       "[user]\n"
 458                       "# Please adapt and uncomment the following lines:\n"
 459                       "#        name = %s\n"
 460                       "#        email = %s\n"),
 461                     ident_default_name(),
 462                     ident_default_email());
 463         return strbuf_detach(&buf, NULL);
 464 }
 465
 466 int cmd_config(int argc, const char **argv, const char *prefix)
 467 {
 468         int nongit = !startup_info->have_repository;
 469         char *value;
 470
 471         given_config_source.file = getenv(CONFIG_ENVIRONMENT);
 472
 473         argc = parse_options(argc, argv, prefix, builtin_config_options,
 474                              builtin_config_usage,
 475                              PARSE_OPT_STOP_AT_NON_OPTION);
 476
 477         if (use_global_config + use_system_config + use_local_config +
 478             !!given_config_source.file + !!given_config_source.blob > 1) {
 479                 error("only one config file at a time.");
 480                 usage_with_options(builtin_config_usage, builtin_config_options);
 481         }
 482
 483         if (given_config_source.file &&
 484                         !strcmp(given_config_source.file, "-")) {
 485                 given_config_source.file = NULL;
 486                 given_config_source.use_stdin = 1;
 487         }
 488
 489         if (use_global_config) {
 490                 char *user_config = expand_user_path("~/.gitconfig");
 491                 char *xdg_config = xdg_config_home("config");
 492
 493                 if (!user_config)
 494                         /*
 495                          * It is unknown if HOME/.gitconfig exists, so
 496                          * we do not know if we should write to XDG
 497                          * location; error out even if XDG_CONFIG_HOME
 498                          * is set and points at a sane location.
 499                          */
 500                         die("$HOME not set");
 501
 502                 if (access_or_warn(user_config, R_OK, 0) &&
 503                     xdg_config && !access_or_warn(xdg_config, R_OK, 0))
 504                         given_config_source.file = xdg_config;
 505                 else
 506                         given_config_source.file = user_config;
 507         }
 508         else if (use_system_config)
 509                 given_config_source.file = git_etc_gitconfig();
 510         else if (use_local_config)
 511                 given_config_source.file = git_pathdup("config");
 512         else if (given_config_source.file) {
 513                 if (!is_absolute_path(given_config_source.file) && prefix)
 514                         given_config_source.file =
 515                                 xstrdup(prefix_filename(prefix,
 516                                                         strlen(prefix),
 517                                                         given_config_source.file));
 518         }
 519
 520         if (respect_includes == -1)
 521                 respect_includes = !given_config_source.file;
 522
 523         if (end_null) {
 524                 term = '\0';
 525                 delim = '\n';
 526                 key_delim = '\n';
 527         }
 528
 529         if (HAS_MULTI_BITS(types)) {
 530                 error("only one type at a time.");
 531                 usage_with_options(builtin_config_usage, builtin_config_options);
 532         }
 533
 534         if ((actions & (ACTION_GET_COLOR|ACTION_GET_COLORBOOL)) && types) {
 535                 error("--get-color and variable type are incoherent");
 536                 usage_with_options(builtin_config_usage, builtin_config_options);
 537         }
 538
 539         if (HAS_MULTI_BITS(actions)) {
 540                 error("only one action at a time.");
 541                 usage_with_options(builtin_config_usage, builtin_config_options);
 542         }
 543         if (actions == 0)
 544                 switch (argc) {
 545                 case 1: actions = ACTION_GET; break;
 546                 case 2: actions = ACTION_SET; break;
 547                 case 3: actions = ACTION_SET_ALL; break;
 548                 default:
 549                         usage_with_options(builtin_config_usage, builtin_config_options);
 550                 }
 551
 552         if (actions == ACTION_LIST) {
 553                 check_argc(argc, 0, 0);
 554                 if (git_config_with_options(show_all_config, NULL,
 555                                             &given_config_source,
 556                                             respect_includes) < 0) {
 557                         if (given_config_source.file)
 558                                 die_errno("unable to read config file '%s'",
 559                                           given_config_source.file);
 560                         else
 561                                 die("error processing config file(s)");
 562                 }
 563         }
 564         else if (actions == ACTION_EDIT) {
 565                 char *config_file;
 566
 567                 check_argc(argc, 0, 0);
 568                 if (!given_config_source.file && nongit)
 569                         die("not in a git directory");
 570                 if (given_config_source.use_stdin)
 571                         die("editing stdin is not supported");
 572                 if (given_config_source.blob)
 573                         die("editing blobs is not supported");
 574                 git_config(git_default_config, NULL);
 575                 config_file = xstrdup(given_config_source.file ?
 576                                       given_config_source.file : git_path("config"));
 577                 if (use_global_config) {
 578                         int fd = open(config_file, O_CREAT | O_EXCL | O_WRONLY, 0666);
 579                         if (fd) {
 580                                 char *content = default_user_config();
 581                                 write_str_in_full(fd, content);
 582                                 free(content);
 583                                 close(fd);
 584                         }
 585                         else if (errno != EEXIST)
 586                                 die_errno(_("cannot create configuration file %s"), config_file);
 587                 }
 588                 launch_editor(config_file, NULL, NULL);
 589                 free(config_file);
 590         }
 591         else if (actions == ACTION_SET) {
 592                 int ret;
 593                 check_write();
 594                 check_argc(argc, 2, 2);
 595                 value = normalize_value(argv[0], argv[1]);
 596                 ret = git_config_set_in_file(given_config_source.file, argv[0], value);
 597                 if (ret == CONFIG_NOTHING_SET)
 598                         error("cannot overwrite multiple values with a single value\n"
 599                         "       Use a regexp, --add or --replace-all to change %s.", argv[0]);
 600                 return ret;
 601         }
 602         else if (actions == ACTION_SET_ALL) {
 603                 check_write();
 604                 check_argc(argc, 2, 3);
 605                 value = normalize_value(argv[0], argv[1]);
 606                 return git_config_set_multivar_in_file(given_config_source.file,
 607                                                        argv[0], value, argv[2], 0);
 608         }
 609         else if (actions == ACTION_ADD) {
 610                 check_write();
 611                 check_argc(argc, 2, 2);
 612                 value = normalize_value(argv[0], argv[1]);
 613                 return git_config_set_multivar_in_file(given_config_source.file,
 614                                                        argv[0], value,
 615                                                        CONFIG_REGEX_NONE, 0);
 616         }
 617         else if (actions == ACTION_REPLACE_ALL) {
 618                 check_write();
 619                 check_argc(argc, 2, 3);
 620                 value = normalize_value(argv[0], argv[1]);
 621                 return git_config_set_multivar_in_file(given_config_source.file,
 622                                                        argv[0], value, argv[2], 1);
 623         }
 624         else if (actions == ACTION_GET) {
 625                 check_argc(argc, 1, 2);
 626                 return get_value(argv[0], argv[1]);
 627         }
 628         else if (actions == ACTION_GET_ALL) {
 629                 do_all = 1;
 630                 check_argc(argc, 1, 2);
 631                 return get_value(argv[0], argv[1]);
 632         }
 633         else if (actions == ACTION_GET_REGEXP) {
 634                 show_keys = 1;
 635                 use_key_regexp = 1;
 636                 do_all = 1;
 637                 check_argc(argc, 1, 2);
 638                 return get_value(argv[0], argv[1]);
 639         }
 640         else if (actions == ACTION_GET_URLMATCH) {
 641                 check_argc(argc, 2, 2);
 642                 return get_urlmatch(argv[0], argv[1]);
 643         }
 644         else if (actions == ACTION_UNSET) {
 645                 check_write();
 646                 check_argc(argc, 1, 2);
 647                 if (argc == 2)
 648                         return git_config_set_multivar_in_file(given_config_source.file,
 649                                                                argv[0], NULL, argv[1], 0);
 650                 else
 651                         return git_config_set_in_file(given_config_source.file,
 652                                                       argv[0], NULL);
 653         }
 654         else if (actions == ACTION_UNSET_ALL) {
 655                 check_write();
 656                 check_argc(argc, 1, 2);
 657                 return git_config_set_multivar_in_file(given_config_source.file,
 658                                                        argv[0], NULL, argv[1], 1);
 659         }
 660         else if (actions == ACTION_RENAME_SECTION) {
 661                 int ret;
 662                 check_write();
 663                 check_argc(argc, 2, 2);
 664                 ret = git_config_rename_section_in_file(given_config_source.file,
 665                                                         argv[0], argv[1]);
 666                 if (ret < 0)
 667                         return ret;
 668                 if (ret == 0)
 669                         die("No such section!");
 670         }
 671         else if (actions == ACTION_REMOVE_SECTION) {
 672                 int ret;
 673                 check_write();
 674                 check_argc(argc, 1, 1);
 675                 ret = git_config_rename_section_in_file(given_config_source.file,
 676                                                         argv[0], NULL);
 677                 if (ret < 0)
 678                         return ret;
 679                 if (ret == 0)
 680                         die("No such section!");
 681         }
 682         else if (actions == ACTION_GET_COLOR) {
 683                 check_argc(argc, 1, 2);
 684                 get_color(argv[0], argv[1]);
 685         }
 686         else if (actions == ACTION_GET_COLORBOOL) {
 687                 check_argc(argc, 1, 2);
 688                 if (argc == 2)
 689                         color_stdout_is_tty = git_config_bool("command line", argv[1]);
 690                 return get_colorbool(argv[0], argc == 2);
 691         }
 692
 693         return 0;
 694 }