builtin/config.c

   1 #include "builtin.h"
   2 #include "cache.h"
   3 #include "config.h"
   4 #include "color.h"
   5 #include "parse-options.h"
   6 #include "urlmatch.h"
   7 #include "quote.h"
   8
   9 static const char *const builtin_config_usage[] = {
  10         N_("git config [<options>]"),
  11         NULL
  12 };
  13
  14 static char *key;
  15 static regex_t *key_regexp;
  16 static regex_t *regexp;
  17 static int show_keys;
  18 static int omit_values;
  19 static int use_key_regexp;
  20 static int do_all;
  21 static int do_not_match;
  22 static char delim = '=';
  23 static char key_delim = ' ';
  24 static char term = '\n';
  25
  26 static int use_global_config, use_system_config, use_local_config;
  27 static struct git_config_source given_config_source;
  28 static int actions, types;
  29 static int end_null;
  30 static int respect_includes_opt = -1;
  31 static struct config_options config_options;
  32 static int show_origin;
  33
  34 #define ACTION_GET (1<<0)
  35 #define ACTION_GET_ALL (1<<1)
  36 #define ACTION_GET_REGEXP (1<<2)
  37 #define ACTION_REPLACE_ALL (1<<3)
  38 #define ACTION_ADD (1<<4)
  39 #define ACTION_UNSET (1<<5)
  40 #define ACTION_UNSET_ALL (1<<6)
  41 #define ACTION_RENAME_SECTION (1<<7)
  42 #define ACTION_REMOVE_SECTION (1<<8)
  43 #define ACTION_LIST (1<<9)
  44 #define ACTION_EDIT (1<<10)
  45 #define ACTION_SET (1<<11)
  46 #define ACTION_SET_ALL (1<<12)
  47 #define ACTION_GET_COLOR (1<<13)
  48 #define ACTION_GET_COLORBOOL (1<<14)
  49 #define ACTION_GET_URLMATCH (1<<15)
  50
  51 #define TYPE_BOOL (1<<0)
  52 #define TYPE_INT (1<<1)
  53 #define TYPE_BOOL_OR_INT (1<<2)
  54 #define TYPE_PATH (1<<3)
  55
  56 static struct option builtin_config_options[] = {
  57         OPT_GROUP(N_("Config file location")),
  58         OPT_BOOL(0, "global", &use_global_config, N_("use global config file")),
  59         OPT_BOOL(0, "system", &use_system_config, N_("use system config file")),
  60         OPT_BOOL(0, "local", &use_local_config, N_("use repository config file")),
  61         OPT_STRING('f', "file", &given_config_source.file, N_("file"), N_("use given config file")),
  62         OPT_STRING(0, "blob", &given_config_source.blob, N_("blob-id"), N_("read config from given blob object")),
  63         OPT_GROUP(N_("Action")),
  64         OPT_BIT(0, "get", &actions, N_("get value: name [value-regex]"), ACTION_GET),
  65         OPT_BIT(0, "get-all", &actions, N_("get all values: key [value-regex]"), ACTION_GET_ALL),
  66         OPT_BIT(0, "get-regexp", &actions, N_("get values for regexp: name-regex [value-regex]"), ACTION_GET_REGEXP),
  67         OPT_BIT(0, "get-urlmatch", &actions, N_("get value specific for the URL: section[.var] URL"), ACTION_GET_URLMATCH),
  68         OPT_BIT(0, "replace-all", &actions, N_("replace all matching variables: name value [value_regex]"), ACTION_REPLACE_ALL),
  69         OPT_BIT(0, "add", &actions, N_("add a new variable: name value"), ACTION_ADD),
  70         OPT_BIT(0, "unset", &actions, N_("remove a variable: name [value-regex]"), ACTION_UNSET),
  71         OPT_BIT(0, "unset-all", &actions, N_("remove all matches: name [value-regex]"), ACTION_UNSET_ALL),
  72         OPT_BIT(0, "rename-section", &actions, N_("rename section: old-name new-name"), ACTION_RENAME_SECTION),
  73         OPT_BIT(0, "remove-section", &actions, N_("remove a section: name"), ACTION_REMOVE_SECTION),
  74         OPT_BIT('l', "list", &actions, N_("list all"), ACTION_LIST),
  75         OPT_BIT('e', "edit", &actions, N_("open an editor"), ACTION_EDIT),
  76         OPT_BIT(0, "get-color", &actions, N_("find the color configured: slot [default]"), ACTION_GET_COLOR),
  77         OPT_BIT(0, "get-colorbool", &actions, N_("find the color setting: slot [stdout-is-tty]"), ACTION_GET_COLORBOOL),
  78         OPT_GROUP(N_("Type")),
  79         OPT_BIT(0, "bool", &types, N_("value is \"true\" or \"false\""), TYPE_BOOL),
  80         OPT_BIT(0, "int", &types, N_("value is decimal number"), TYPE_INT),
  81         OPT_BIT(0, "bool-or-int", &types, N_("value is --bool or --int"), TYPE_BOOL_OR_INT),
  82         OPT_BIT(0, "path", &types, N_("value is a path (file or directory name)"), TYPE_PATH),
  83         OPT_GROUP(N_("Other")),
  84         OPT_BOOL('z', "null", &end_null, N_("terminate values with NUL byte")),
  85         OPT_BOOL(0, "name-only", &omit_values, N_("show variable names only")),
  86         OPT_BOOL(0, "includes", &respect_includes_opt, N_("respect include directives on lookup")),
  87         OPT_BOOL(0, "show-origin", &show_origin, N_("show origin of config (file, standard input, blob, command line)")),
  88         OPT_END(),
  89 };
  90
  91 static void check_argc(int argc, int min, int max) {
  92         if (argc >= min && argc <= max)
  93                 return;
  94         error("wrong number of arguments");
  95         usage_with_options(builtin_config_usage, builtin_config_options);
  96 }
  97
  98 static void show_config_origin(struct strbuf *buf)
  99 {
 100         const char term = end_null ? '\0' : '\t';
 101
 102         strbuf_addstr(buf, current_config_origin_type());
 103         strbuf_addch(buf, ':');
 104         if (end_null)
 105                 strbuf_addstr(buf, current_config_name());
 106         else
 107                 quote_c_style(current_config_name(), buf, NULL, 0);
 108         strbuf_addch(buf, term);
 109 }
 110
 111 static int show_all_config(const char *key_, const char *value_, void *cb)
 112 {
 113         if (show_origin) {
 114                 struct strbuf buf = STRBUF_INIT;
 115                 show_config_origin(&buf);
 116                 /* Use fwrite as "buf" can contain \0's if "end_null" is set. */
 117                 fwrite(buf.buf, 1, buf.len, stdout);
 118                 strbuf_release(&buf);
 119         }
 120         if (!omit_values && value_)
 121                 printf("%s%c%s%c", key_, delim, value_, term);
 122         else
 123                 printf("%s%c", key_, term);
 124         return 0;
 125 }
 126
 127 struct strbuf_list {
 128         struct strbuf *items;
 129         int nr;
 130         int alloc;
 131 };
 132
 133 static int format_config(struct strbuf *buf, const char *key_, const char *value_)
 134 {
 135         if (show_origin)
 136                 show_config_origin(buf);
 137         if (show_keys)
 138                 strbuf_addstr(buf, key_);
 139         if (!omit_values) {
 140                 if (show_keys)
 141                         strbuf_addch(buf, key_delim);
 142
 143                 if (types == TYPE_INT)
 144                         strbuf_addf(buf, "%"PRId64,
 145                                     git_config_int64(key_, value_ ? value_ : ""));
 146                 else if (types == TYPE_BOOL)
 147                         strbuf_addstr(buf, git_config_bool(key_, value_) ?
 148                                       "true" : "false");
 149                 else if (types == TYPE_BOOL_OR_INT) {
 150                         int is_bool, v;
 151                         v = git_config_bool_or_int(key_, value_, &is_bool);
 152                         if (is_bool)
 153                                 strbuf_addstr(buf, v ? "true" : "false");
 154                         else
 155                                 strbuf_addf(buf, "%d", v);
 156                 } else if (types == TYPE_PATH) {
 157                         const char *v;
 158                         if (git_config_pathname(&v, key_, value_) < 0)
 159                                 return -1;
 160                         strbuf_addstr(buf, v);
 161                         free((char *)v);
 162                 } else if (value_) {
 163                         strbuf_addstr(buf, value_);
 164                 } else {
 165                         /* Just show the key name; back out delimiter */
 166                         if (show_keys)
 167                                 strbuf_setlen(buf, buf->len - 1);
 168                 }
 169         }
 170         strbuf_addch(buf, term);
 171         return 0;
 172 }
 173
 174 static int collect_config(const char *key_, const char *value_, void *cb)
 175 {
 176         struct strbuf_list *values = cb;
 177
 178         if (!use_key_regexp && strcmp(key_, key))
 179                 return 0;
 180         if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
 181                 return 0;
 182         if (regexp != NULL &&
 183             (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
 184                 return 0;
 185
 186         ALLOC_GROW(values->items, values->nr + 1, values->alloc);
 187         strbuf_init(&values->items[values->nr], 0);
 188
 189         return format_config(&values->items[values->nr++], key_, value_);
 190 }
 191
 192 static int get_value(const char *key_, const char *regex_)
 193 {
 194         int ret = CONFIG_GENERIC_ERROR;
 195         struct strbuf_list values = {NULL};
 196         int i;
 197
 198         if (use_key_regexp) {
 199                 char *tl;
 200
 201                 /*
 202                  * NEEDSWORK: this naive pattern lowercasing obviously does not
 203                  * work for more complex patterns like "^[^.]*Foo.*bar".
 204                  * Perhaps we should deprecate this altogether someday.
 205                  */
 206
 207                 key = xstrdup(key_);
 208                 for (tl = key + strlen(key) - 1;
 209                      tl >= key && *tl != '.';
 210                      tl--)
 211                         *tl = tolower(*tl);
 212                 for (tl = key; *tl && *tl != '.'; tl++)
 213                         *tl = tolower(*tl);
 214
 215                 key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
 216                 if (regcomp(key_regexp, key, REG_EXTENDED)) {
 217                         error("invalid key pattern: %s", key_);
 218                         FREE_AND_NULL(key_regexp);
 219                         ret = CONFIG_INVALID_PATTERN;
 220                         goto free_strings;
 221                 }
 222         } else {
 223                 if (git_config_parse_key(key_, &key, NULL)) {
 224                         ret = CONFIG_INVALID_KEY;
 225                         goto free_strings;
 226                 }
 227         }
 228
 229         if (regex_) {
 230                 if (regex_[0] == '!') {
 231                         do_not_match = 1;
 232                         regex_++;
 233                 }
 234
 235                 regexp = (regex_t*)xmalloc(sizeof(regex_t));
 236                 if (regcomp(regexp, regex_, REG_EXTENDED)) {
 237                         error("invalid pattern: %s", regex_);
 238                         FREE_AND_NULL(regexp);
 239                         ret = CONFIG_INVALID_PATTERN;
 240                         goto free_strings;
 241                 }
 242         }
 243
 244         config_with_options(collect_config, &values,
 245                             &given_config_source, &config_options);
 246
 247         ret = !values.nr;
 248
 249         for (i = 0; i < values.nr; i++) {
 250                 struct strbuf *buf = values.items + i;
 251                 if (do_all || i == values.nr - 1)
 252                         fwrite(buf->buf, 1, buf->len, stdout);
 253                 strbuf_release(buf);
 254         }
 255         free(values.items);
 256
 257 free_strings:
 258         free(key);
 259         if (key_regexp) {
 260                 regfree(key_regexp);
 261                 free(key_regexp);
 262         }
 263         if (regexp) {
 264                 regfree(regexp);
 265                 free(regexp);
 266         }
 267
 268         return ret;
 269 }
 270
 271 static char *normalize_value(const char *key, const char *value)
 272 {
 273         if (!value)
 274                 return NULL;
 275
 276         if (types == 0 || types == TYPE_PATH)
 277                 /*
 278                  * We don't do normalization for TYPE_PATH here: If
 279                  * the path is like ~/foobar/, we prefer to store
 280                  * "~/foobar/" in the config file, and to expand the ~
 281                  * when retrieving the value.
 282                  */
 283                 return xstrdup(value);
 284         if (types == TYPE_INT)
 285                 return xstrfmt("%"PRId64, git_config_int64(key, value));
 286         if (types == TYPE_BOOL)
 287                 return xstrdup(git_config_bool(key, value) ?  "true" : "false");
 288         if (types == TYPE_BOOL_OR_INT) {
 289                 int is_bool, v;
 290                 v = git_config_bool_or_int(key, value, &is_bool);
 291                 if (!is_bool)
 292                         return xstrfmt("%d", v);
 293                 else
 294                         return xstrdup(v ? "true" : "false");
 295         }
 296
 297         die("BUG: cannot normalize type %d", types);
 298 }
 299
 300 static int get_color_found;
 301 static const char *get_color_slot;
 302 static const char *get_colorbool_slot;
 303 static char parsed_color[COLOR_MAXLEN];
 304
 305 static int git_get_color_config(const char *var, const char *value, void *cb)
 306 {
 307         if (!strcmp(var, get_color_slot)) {
 308                 if (!value)
 309                         config_error_nonbool(var);
 310                 if (color_parse(value, parsed_color) < 0)
 311                         return -1;
 312                 get_color_found = 1;
 313         }
 314         return 0;
 315 }
 316
 317 static void get_color(const char *var, const char *def_color)
 318 {
 319         get_color_slot = var;
 320         get_color_found = 0;
 321         parsed_color[0] = '\0';
 322         config_with_options(git_get_color_config, NULL,
 323                             &given_config_source, &config_options);
 324
 325         if (!get_color_found && def_color) {
 326                 if (color_parse(def_color, parsed_color) < 0)
 327                         die(_("unable to parse default color value"));
 328         }
 329
 330         fputs(parsed_color, stdout);
 331 }
 332
 333 static int get_colorbool_found;
 334 static int get_diff_color_found;
 335 static int get_color_ui_found;
 336 static int git_get_colorbool_config(const char *var, const char *value,
 337                 void *cb)
 338 {
 339         if (!strcmp(var, get_colorbool_slot))
 340                 get_colorbool_found = git_config_colorbool(var, value);
 341         else if (!strcmp(var, "diff.color"))
 342                 get_diff_color_found = git_config_colorbool(var, value);
 343         else if (!strcmp(var, "color.ui"))
 344                 get_color_ui_found = git_config_colorbool(var, value);
 345         return 0;
 346 }
 347
 348 static int get_colorbool(const char *var, int print)
 349 {
 350         get_colorbool_slot = var;
 351         get_colorbool_found = -1;
 352         get_diff_color_found = -1;
 353         get_color_ui_found = -1;
 354         config_with_options(git_get_colorbool_config, NULL,
 355                             &given_config_source, &config_options);
 356
 357         if (get_colorbool_found < 0) {
 358                 if (!strcmp(get_colorbool_slot, "color.diff"))
 359                         get_colorbool_found = get_diff_color_found;
 360                 if (get_colorbool_found < 0)
 361                         get_colorbool_found = get_color_ui_found;
 362         }
 363
 364         if (get_colorbool_found < 0)
 365                 /* default value if none found in config */
 366                 get_colorbool_found = GIT_COLOR_AUTO;
 367
 368         get_colorbool_found = want_color(get_colorbool_found);
 369
 370         if (print) {
 371                 printf("%s\n", get_colorbool_found ? "true" : "false");
 372                 return 0;
 373         } else
 374                 return get_colorbool_found ? 0 : 1;
 375 }
 376
 377 static void check_write(void)
 378 {
 379         if (!given_config_source.file && !startup_info->have_repository)
 380                 die("not in a git directory");
 381
 382         if (given_config_source.use_stdin)
 383                 die("writing to stdin is not supported");
 384
 385         if (given_config_source.blob)
 386                 die("writing config blobs is not supported");
 387 }
 388
 389 struct urlmatch_current_candidate_value {
 390         char value_is_null;
 391         struct strbuf value;
 392 };
 393
 394 static int urlmatch_collect_fn(const char *var, const char *value, void *cb)
 395 {
 396         struct string_list *values = cb;
 397         struct string_list_item *item = string_list_insert(values, var);
 398         struct urlmatch_current_candidate_value *matched = item->util;
 399
 400         if (!matched) {
 401                 matched = xmalloc(sizeof(*matched));
 402                 strbuf_init(&matched->value, 0);
 403                 item->util = matched;
 404         } else {
 405                 strbuf_reset(&matched->value);
 406         }
 407
 408         if (value) {
 409                 strbuf_addstr(&matched->value, value);
 410                 matched->value_is_null = 0;
 411         } else {
 412                 matched->value_is_null = 1;
 413         }
 414         return 0;
 415 }
 416
 417 static int get_urlmatch(const char *var, const char *url)
 418 {
 419         int ret;
 420         char *section_tail;
 421         struct string_list_item *item;
 422         struct urlmatch_config config = { STRING_LIST_INIT_DUP };
 423         struct string_list values = STRING_LIST_INIT_DUP;
 424
 425         config.collect_fn = urlmatch_collect_fn;
 426         config.cascade_fn = NULL;
 427         config.cb = &values;
 428
 429         if (!url_normalize(url, &config.url))
 430                 die("%s", config.url.err);
 431
 432         config.section = xstrdup_tolower(var);
 433         section_tail = strchr(config.section, '.');
 434         if (section_tail) {
 435                 *section_tail = '\0';
 436                 config.key = section_tail + 1;
 437                 show_keys = 0;
 438         } else {
 439                 config.key = NULL;
 440                 show_keys = 1;
 441         }
 442
 443         config_with_options(urlmatch_config_entry, &config,
 444                             &given_config_source, &config_options);
 445
 446         ret = !values.nr;
 447
 448         for_each_string_list_item(item, &values) {
 449                 struct urlmatch_current_candidate_value *matched = item->util;
 450                 struct strbuf buf = STRBUF_INIT;
 451
 452                 format_config(&buf, item->string,
 453                               matched->value_is_null ? NULL : matched->value.buf);
 454                 fwrite(buf.buf, 1, buf.len, stdout);
 455                 strbuf_release(&buf);
 456
 457                 strbuf_release(&matched->value);
 458         }
 459         string_list_clear(&config.vars, 1);
 460         string_list_clear(&values, 1);
 461         free(config.url.url);
 462
 463         free((void *)config.section);
 464         return ret;
 465 }
 466
 467 static char *default_user_config(void)
 468 {
 469         struct strbuf buf = STRBUF_INIT;
 470         strbuf_addf(&buf,
 471                     _("# This is Git's per-user configuration file.\n"
 472                       "[user]\n"
 473                       "# Please adapt and uncomment the following lines:\n"
 474                       "#        name = %s\n"
 475                       "#        email = %s\n"),
 476                     ident_default_name(),
 477                     ident_default_email());
 478         return strbuf_detach(&buf, NULL);
 479 }
 480
 481 int cmd_config(int argc, const char **argv, const char *prefix)
 482 {
 483         int nongit = !startup_info->have_repository;
 484         char *value;
 485
 486         given_config_source.file = getenv(CONFIG_ENVIRONMENT);
 487
 488         argc = parse_options(argc, argv, prefix, builtin_config_options,
 489                              builtin_config_usage,
 490                              PARSE_OPT_STOP_AT_NON_OPTION);
 491
 492         if (use_global_config + use_system_config + use_local_config +
 493             !!given_config_source.file + !!given_config_source.blob > 1) {
 494                 error("only one config file at a time.");
 495                 usage_with_options(builtin_config_usage, builtin_config_options);
 496         }
 497
 498         if (use_local_config && nongit)
 499                 die(_("--local can only be used inside a git repository"));
 500
 501         if (given_config_source.file &&
 502                         !strcmp(given_config_source.file, "-")) {
 503                 given_config_source.file = NULL;
 504                 given_config_source.use_stdin = 1;
 505         }
 506
 507         if (use_global_config) {
 508                 char *user_config = expand_user_path("~/.gitconfig", 0);
 509                 char *xdg_config = xdg_config_home("config");
 510
 511                 if (!user_config)
 512                         /*
 513                          * It is unknown if HOME/.gitconfig exists, so
 514                          * we do not know if we should write to XDG
 515                          * location; error out even if XDG_CONFIG_HOME
 516                          * is set and points at a sane location.
 517                          */
 518                         die("$HOME not set");
 519
 520                 if (access_or_warn(user_config, R_OK, 0) &&
 521                     xdg_config && !access_or_warn(xdg_config, R_OK, 0))
 522                         given_config_source.file = xdg_config;
 523                 else
 524                         given_config_source.file = user_config;
 525         }
 526         else if (use_system_config)
 527                 given_config_source.file = git_etc_gitconfig();
 528         else if (use_local_config)
 529                 given_config_source.file = git_pathdup("config");
 530         else if (given_config_source.file) {
 531                 if (!is_absolute_path(given_config_source.file) && prefix)
 532                         given_config_source.file =
 533                                 prefix_filename(prefix, given_config_source.file);
 534         }
 535
 536         if (respect_includes_opt == -1)
 537                 config_options.respect_includes = !given_config_source.file;
 538         else
 539                 config_options.respect_includes = respect_includes_opt;
 540         if (!nongit) {
 541                 config_options.commondir = get_git_common_dir();
 542                 config_options.git_dir = get_git_dir();
 543         }
 544
 545         if (end_null) {
 546                 term = '\0';
 547                 delim = '\n';
 548                 key_delim = '\n';
 549         }
 550
 551         if (HAS_MULTI_BITS(types)) {
 552                 error("only one type at a time.");
 553                 usage_with_options(builtin_config_usage, builtin_config_options);
 554         }
 555
 556         if ((actions & (ACTION_GET_COLOR|ACTION_GET_COLORBOOL)) && types) {
 557                 error("--get-color and variable type are incoherent");
 558                 usage_with_options(builtin_config_usage, builtin_config_options);
 559         }
 560
 561         if (HAS_MULTI_BITS(actions)) {
 562                 error("only one action at a time.");
 563                 usage_with_options(builtin_config_usage, builtin_config_options);
 564         }
 565         if (actions == 0)
 566                 switch (argc) {
 567                 case 1: actions = ACTION_GET; break;
 568                 case 2: actions = ACTION_SET; break;
 569                 case 3: actions = ACTION_SET_ALL; break;
 570                 default:
 571                         usage_with_options(builtin_config_usage, builtin_config_options);
 572                 }
 573         if (omit_values &&
 574             !(actions == ACTION_LIST || actions == ACTION_GET_REGEXP)) {
 575                 error("--name-only is only applicable to --list or --get-regexp");
 576                 usage_with_options(builtin_config_usage, builtin_config_options);
 577         }
 578
 579         if (show_origin && !(actions &
 580                 (ACTION_GET|ACTION_GET_ALL|ACTION_GET_REGEXP|ACTION_LIST))) {
 581                 error("--show-origin is only applicable to --get, --get-all, "
 582                           "--get-regexp, and --list.");
 583                 usage_with_options(builtin_config_usage, builtin_config_options);
 584         }
 585
 586         if (actions == ACTION_LIST) {
 587                 check_argc(argc, 0, 0);
 588                 if (config_with_options(show_all_config, NULL,
 589                                         &given_config_source,
 590                                         &config_options) < 0) {
 591                         if (given_config_source.file)
 592                                 die_errno("unable to read config file '%s'",
 593                                           given_config_source.file);
 594                         else
 595                                 die("error processing config file(s)");
 596                 }
 597         }
 598         else if (actions == ACTION_EDIT) {
 599                 char *config_file;
 600
 601                 check_argc(argc, 0, 0);
 602                 if (!given_config_source.file && nongit)
 603                         die("not in a git directory");
 604                 if (given_config_source.use_stdin)
 605                         die("editing stdin is not supported");
 606                 if (given_config_source.blob)
 607                         die("editing blobs is not supported");
 608                 git_config(git_default_config, NULL);
 609                 config_file = given_config_source.file ?
 610                                 xstrdup(given_config_source.file) :
 611                                 git_pathdup("config");
 612                 if (use_global_config) {
 613                         int fd = open(config_file, O_CREAT | O_EXCL | O_WRONLY, 0666);
 614                         if (fd >= 0) {
 615                                 char *content = default_user_config();
 616                                 write_str_in_full(fd, content);
 617                                 free(content);
 618                                 close(fd);
 619                         }
 620                         else if (errno != EEXIST)
 621                                 die_errno(_("cannot create configuration file %s"), config_file);
 622                 }
 623                 launch_editor(config_file, NULL, NULL);
 624                 free(config_file);
 625         }
 626         else if (actions == ACTION_SET) {
 627                 int ret;
 628                 check_write();
 629                 check_argc(argc, 2, 2);
 630                 value = normalize_value(argv[0], argv[1]);
 631                 ret = git_config_set_in_file_gently(given_config_source.file, argv[0], value);
 632                 if (ret == CONFIG_NOTHING_SET)
 633                         error(_("cannot overwrite multiple values with a single value\n"
 634                         "       Use a regexp, --add or --replace-all to change %s."), argv[0]);
 635                 return ret;
 636         }
 637         else if (actions == ACTION_SET_ALL) {
 638                 check_write();
 639                 check_argc(argc, 2, 3);
 640                 value = normalize_value(argv[0], argv[1]);
 641                 return git_config_set_multivar_in_file_gently(given_config_source.file,
 642                                                               argv[0], value, argv[2], 0);
 643         }
 644         else if (actions == ACTION_ADD) {
 645                 check_write();
 646                 check_argc(argc, 2, 2);
 647                 value = normalize_value(argv[0], argv[1]);
 648                 return git_config_set_multivar_in_file_gently(given_config_source.file,
 649                                                               argv[0], value,
 650                                                               CONFIG_REGEX_NONE, 0);
 651         }
 652         else if (actions == ACTION_REPLACE_ALL) {
 653                 check_write();
 654                 check_argc(argc, 2, 3);
 655                 value = normalize_value(argv[0], argv[1]);
 656                 return git_config_set_multivar_in_file_gently(given_config_source.file,
 657                                                               argv[0], value, argv[2], 1);
 658         }
 659         else if (actions == ACTION_GET) {
 660                 check_argc(argc, 1, 2);
 661                 return get_value(argv[0], argv[1]);
 662         }
 663         else if (actions == ACTION_GET_ALL) {
 664                 do_all = 1;
 665                 check_argc(argc, 1, 2);
 666                 return get_value(argv[0], argv[1]);
 667         }
 668         else if (actions == ACTION_GET_REGEXP) {
 669                 show_keys = 1;
 670                 use_key_regexp = 1;
 671                 do_all = 1;
 672                 check_argc(argc, 1, 2);
 673                 return get_value(argv[0], argv[1]);
 674         }
 675         else if (actions == ACTION_GET_URLMATCH) {
 676                 check_argc(argc, 2, 2);
 677                 return get_urlmatch(argv[0], argv[1]);
 678         }
 679         else if (actions == ACTION_UNSET) {
 680                 check_write();
 681                 check_argc(argc, 1, 2);
 682                 if (argc == 2)
 683                         return git_config_set_multivar_in_file_gently(given_config_source.file,
 684                                                                       argv[0], NULL, argv[1], 0);
 685                 else
 686                         return git_config_set_in_file_gently(given_config_source.file,
 687                                                              argv[0], NULL);
 688         }
 689         else if (actions == ACTION_UNSET_ALL) {
 690                 check_write();
 691                 check_argc(argc, 1, 2);
 692                 return git_config_set_multivar_in_file_gently(given_config_source.file,
 693                                                               argv[0], NULL, argv[1], 1);
 694         }
 695         else if (actions == ACTION_RENAME_SECTION) {
 696                 int ret;
 697                 check_write();
 698                 check_argc(argc, 2, 2);
 699                 ret = git_config_rename_section_in_file(given_config_source.file,
 700                                                         argv[0], argv[1]);
 701                 if (ret < 0)
 702                         return ret;
 703                 if (ret == 0)
 704                         die("No such section!");
 705         }
 706         else if (actions == ACTION_REMOVE_SECTION) {
 707                 int ret;
 708                 check_write();
 709                 check_argc(argc, 1, 1);
 710                 ret = git_config_rename_section_in_file(given_config_source.file,
 711                                                         argv[0], NULL);
 712                 if (ret < 0)
 713                         return ret;
 714                 if (ret == 0)
 715                         die("No such section!");
 716         }
 717         else if (actions == ACTION_GET_COLOR) {
 718                 check_argc(argc, 1, 2);
 719                 get_color(argv[0], argv[1]);
 720         }
 721         else if (actions == ACTION_GET_COLORBOOL) {
 722                 check_argc(argc, 1, 2);
 723                 if (argc == 2)
 724                         color_stdout_is_tty = git_config_bool("command line", argv[1]);
 725                 return get_colorbool(argv[0], argc == 2);
 726         }
 727
 728         return 0;
 729 }