Merge branch 'js/config-set-in-non-repository' into maint
[git] / 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 omit_values;
17 static int use_key_regexp;
18 static int do_all;
19 static int do_not_match;
20 static char delim = '=';
21 static char key_delim = ' ';
22 static char term = '\n';
23
24 static int use_global_config, use_system_config, use_local_config;
25 static struct git_config_source given_config_source;
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_source.file, N_("file"), N_("use given config file")),
59         OPT_STRING(0, "blob", &given_config_source.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_BIT(0, "get-color", &actions, N_("find the color configured: slot [default]"), ACTION_GET_COLOR),
74         OPT_BIT(0, "get-colorbool", &actions, N_("find the color setting: slot [stdout-is-tty]"), ACTION_GET_COLORBOOL),
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, "name-only", &omit_values, N_("show variable names only")),
83         OPT_BOOL(0, "includes", &respect_includes, N_("respect include directives on lookup")),
84         OPT_END(),
85 };
86
87 static void check_argc(int argc, int min, int max) {
88         if (argc >= min && argc <= max)
89                 return;
90         error("wrong number of arguments");
91         usage_with_options(builtin_config_usage, builtin_config_options);
92 }
93
94 static int show_all_config(const char *key_, const char *value_, void *cb)
95 {
96         if (!omit_values && value_)
97                 printf("%s%c%s%c", key_, delim, value_, term);
98         else
99                 printf("%s%c", key_, term);
100         return 0;
101 }
102
103 struct strbuf_list {
104         struct strbuf *items;
105         int nr;
106         int alloc;
107 };
108
109 static int format_config(struct strbuf *buf, const char *key_, const char *value_)
110 {
111         if (show_keys)
112                 strbuf_addstr(buf, key_);
113         if (!omit_values) {
114                 if (show_keys)
115                         strbuf_addch(buf, key_delim);
116
117                 if (types == TYPE_INT)
118                         strbuf_addf(buf, "%"PRId64,
119                                     git_config_int64(key_, value_ ? value_ : ""));
120                 else if (types == TYPE_BOOL)
121                         strbuf_addstr(buf, git_config_bool(key_, value_) ?
122                                       "true" : "false");
123                 else if (types == TYPE_BOOL_OR_INT) {
124                         int is_bool, v;
125                         v = git_config_bool_or_int(key_, value_, &is_bool);
126                         if (is_bool)
127                                 strbuf_addstr(buf, v ? "true" : "false");
128                         else
129                                 strbuf_addf(buf, "%d", v);
130                 } else if (types == TYPE_PATH) {
131                         const char *v;
132                         if (git_config_pathname(&v, key_, value_) < 0)
133                                 return -1;
134                         strbuf_addstr(buf, v);
135                         free((char *)v);
136                 } else if (value_) {
137                         strbuf_addstr(buf, value_);
138                 } else {
139                         /* Just show the key name; back out delimiter */
140                         if (show_keys)
141                                 strbuf_setlen(buf, buf->len - 1);
142                 }
143         }
144         strbuf_addch(buf, term);
145         return 0;
146 }
147
148 static int collect_config(const char *key_, const char *value_, void *cb)
149 {
150         struct strbuf_list *values = cb;
151
152         if (!use_key_regexp && strcmp(key_, key))
153                 return 0;
154         if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
155                 return 0;
156         if (regexp != NULL &&
157             (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
158                 return 0;
159
160         ALLOC_GROW(values->items, values->nr + 1, values->alloc);
161         strbuf_init(&values->items[values->nr], 0);
162
163         return format_config(&values->items[values->nr++], key_, value_);
164 }
165
166 static int get_value(const char *key_, const char *regex_)
167 {
168         int ret = CONFIG_GENERIC_ERROR;
169         struct strbuf_list values = {NULL};
170         int i;
171
172         if (use_key_regexp) {
173                 char *tl;
174
175                 /*
176                  * NEEDSWORK: this naive pattern lowercasing obviously does not
177                  * work for more complex patterns like "^[^.]*Foo.*bar".
178                  * Perhaps we should deprecate this altogether someday.
179                  */
180
181                 key = xstrdup(key_);
182                 for (tl = key + strlen(key) - 1;
183                      tl >= key && *tl != '.';
184                      tl--)
185                         *tl = tolower(*tl);
186                 for (tl = key; *tl && *tl != '.'; tl++)
187                         *tl = tolower(*tl);
188
189                 key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
190                 if (regcomp(key_regexp, key, REG_EXTENDED)) {
191                         error("invalid key pattern: %s", key_);
192                         free(key_regexp);
193                         key_regexp = NULL;
194                         ret = CONFIG_INVALID_PATTERN;
195                         goto free_strings;
196                 }
197         } else {
198                 if (git_config_parse_key(key_, &key, NULL)) {
199                         ret = CONFIG_INVALID_KEY;
200                         goto free_strings;
201                 }
202         }
203
204         if (regex_) {
205                 if (regex_[0] == '!') {
206                         do_not_match = 1;
207                         regex_++;
208                 }
209
210                 regexp = (regex_t*)xmalloc(sizeof(regex_t));
211                 if (regcomp(regexp, regex_, REG_EXTENDED)) {
212                         error("invalid pattern: %s", regex_);
213                         free(regexp);
214                         regexp = NULL;
215                         ret = CONFIG_INVALID_PATTERN;
216                         goto free_strings;
217                 }
218         }
219
220         git_config_with_options(collect_config, &values,
221                                 &given_config_source, respect_includes);
222
223         ret = !values.nr;
224
225         for (i = 0; i < values.nr; i++) {
226                 struct strbuf *buf = values.items + i;
227                 if (do_all || i == values.nr - 1)
228                         fwrite(buf->buf, 1, buf->len, stdout);
229                 strbuf_release(buf);
230         }
231         free(values.items);
232
233 free_strings:
234         free(key);
235         if (key_regexp) {
236                 regfree(key_regexp);
237                 free(key_regexp);
238         }
239         if (regexp) {
240                 regfree(regexp);
241                 free(regexp);
242         }
243
244         return ret;
245 }
246
247 static char *normalize_value(const char *key, const char *value)
248 {
249         if (!value)
250                 return NULL;
251
252         if (types == 0 || types == TYPE_PATH)
253                 /*
254                  * We don't do normalization for TYPE_PATH here: If
255                  * the path is like ~/foobar/, we prefer to store
256                  * "~/foobar/" in the config file, and to expand the ~
257                  * when retrieving the value.
258                  */
259                 return xstrdup(value);
260         if (types == TYPE_INT)
261                 return xstrfmt("%"PRId64, git_config_int64(key, value));
262         if (types == TYPE_BOOL)
263                 return xstrdup(git_config_bool(key, value) ?  "true" : "false");
264         if (types == TYPE_BOOL_OR_INT) {
265                 int is_bool, v;
266                 v = git_config_bool_or_int(key, value, &is_bool);
267                 if (!is_bool)
268                         return xstrfmt("%d", v);
269                 else
270                         return xstrdup(v ? "true" : "false");
271         }
272
273         die("BUG: cannot normalize type %d", types);
274 }
275
276 static int get_color_found;
277 static const char *get_color_slot;
278 static const char *get_colorbool_slot;
279 static char parsed_color[COLOR_MAXLEN];
280
281 static int git_get_color_config(const char *var, const char *value, void *cb)
282 {
283         if (!strcmp(var, get_color_slot)) {
284                 if (!value)
285                         config_error_nonbool(var);
286                 if (color_parse(value, parsed_color) < 0)
287                         return -1;
288                 get_color_found = 1;
289         }
290         return 0;
291 }
292
293 static void get_color(const char *var, const char *def_color)
294 {
295         get_color_slot = var;
296         get_color_found = 0;
297         parsed_color[0] = '\0';
298         git_config_with_options(git_get_color_config, NULL,
299                                 &given_config_source, respect_includes);
300
301         if (!get_color_found && def_color) {
302                 if (color_parse(def_color, parsed_color) < 0)
303                         die(_("unable to parse default color value"));
304         }
305
306         fputs(parsed_color, stdout);
307 }
308
309 static int get_colorbool_found;
310 static int get_diff_color_found;
311 static int get_color_ui_found;
312 static int git_get_colorbool_config(const char *var, const char *value,
313                 void *cb)
314 {
315         if (!strcmp(var, get_colorbool_slot))
316                 get_colorbool_found = git_config_colorbool(var, value);
317         else if (!strcmp(var, "diff.color"))
318                 get_diff_color_found = git_config_colorbool(var, value);
319         else if (!strcmp(var, "color.ui"))
320                 get_color_ui_found = git_config_colorbool(var, value);
321         return 0;
322 }
323
324 static int get_colorbool(const char *var, int print)
325 {
326         get_colorbool_slot = var;
327         get_colorbool_found = -1;
328         get_diff_color_found = -1;
329         get_color_ui_found = -1;
330         git_config_with_options(git_get_colorbool_config, NULL,
331                                 &given_config_source, respect_includes);
332
333         if (get_colorbool_found < 0) {
334                 if (!strcmp(get_colorbool_slot, "color.diff"))
335                         get_colorbool_found = get_diff_color_found;
336                 if (get_colorbool_found < 0)
337                         get_colorbool_found = get_color_ui_found;
338         }
339
340         if (get_colorbool_found < 0)
341                 /* default value if none found in config */
342                 get_colorbool_found = GIT_COLOR_AUTO;
343
344         get_colorbool_found = want_color(get_colorbool_found);
345
346         if (print) {
347                 printf("%s\n", get_colorbool_found ? "true" : "false");
348                 return 0;
349         } else
350                 return get_colorbool_found ? 0 : 1;
351 }
352
353 static void check_write(void)
354 {
355         if (!given_config_source.file && !startup_info->have_repository)
356                 die("not in a git directory");
357
358         if (given_config_source.use_stdin)
359                 die("writing to stdin is not supported");
360
361         if (given_config_source.blob)
362                 die("writing config blobs is not supported");
363 }
364
365 struct urlmatch_current_candidate_value {
366         char value_is_null;
367         struct strbuf value;
368 };
369
370 static int urlmatch_collect_fn(const char *var, const char *value, void *cb)
371 {
372         struct string_list *values = cb;
373         struct string_list_item *item = string_list_insert(values, var);
374         struct urlmatch_current_candidate_value *matched = item->util;
375
376         if (!matched) {
377                 matched = xmalloc(sizeof(*matched));
378                 strbuf_init(&matched->value, 0);
379                 item->util = matched;
380         } else {
381                 strbuf_reset(&matched->value);
382         }
383
384         if (value) {
385                 strbuf_addstr(&matched->value, value);
386                 matched->value_is_null = 0;
387         } else {
388                 matched->value_is_null = 1;
389         }
390         return 0;
391 }
392
393 static int get_urlmatch(const char *var, const char *url)
394 {
395         char *section_tail;
396         struct string_list_item *item;
397         struct urlmatch_config config = { STRING_LIST_INIT_DUP };
398         struct string_list values = STRING_LIST_INIT_DUP;
399
400         config.collect_fn = urlmatch_collect_fn;
401         config.cascade_fn = NULL;
402         config.cb = &values;
403
404         if (!url_normalize(url, &config.url))
405                 die("%s", config.url.err);
406
407         config.section = xstrdup_tolower(var);
408         section_tail = strchr(config.section, '.');
409         if (section_tail) {
410                 *section_tail = '\0';
411                 config.key = section_tail + 1;
412                 show_keys = 0;
413         } else {
414                 config.key = NULL;
415                 show_keys = 1;
416         }
417
418         git_config_with_options(urlmatch_config_entry, &config,
419                                 &given_config_source, respect_includes);
420
421         for_each_string_list_item(item, &values) {
422                 struct urlmatch_current_candidate_value *matched = item->util;
423                 struct strbuf buf = STRBUF_INIT;
424
425                 format_config(&buf, item->string,
426                               matched->value_is_null ? NULL : matched->value.buf);
427                 fwrite(buf.buf, 1, buf.len, stdout);
428                 strbuf_release(&buf);
429
430                 strbuf_release(&matched->value);
431         }
432         string_list_clear(&config.vars, 1);
433         string_list_clear(&values, 1);
434         free(config.url.url);
435
436         free((void *)config.section);
437         return 0;
438 }
439
440 static char *default_user_config(void)
441 {
442         struct strbuf buf = STRBUF_INIT;
443         strbuf_addf(&buf,
444                     _("# This is Git's per-user configuration file.\n"
445                       "[user]\n"
446                       "# Please adapt and uncomment the following lines:\n"
447                       "#        name = %s\n"
448                       "#        email = %s\n"),
449                     ident_default_name(),
450                     ident_default_email());
451         return strbuf_detach(&buf, NULL);
452 }
453
454 int cmd_config(int argc, const char **argv, const char *prefix)
455 {
456         int nongit = !startup_info->have_repository;
457         char *value;
458
459         given_config_source.file = getenv(CONFIG_ENVIRONMENT);
460
461         argc = parse_options(argc, argv, prefix, builtin_config_options,
462                              builtin_config_usage,
463                              PARSE_OPT_STOP_AT_NON_OPTION);
464
465         if (use_global_config + use_system_config + use_local_config +
466             !!given_config_source.file + !!given_config_source.blob > 1) {
467                 error("only one config file at a time.");
468                 usage_with_options(builtin_config_usage, builtin_config_options);
469         }
470
471         if (given_config_source.file &&
472                         !strcmp(given_config_source.file, "-")) {
473                 given_config_source.file = NULL;
474                 given_config_source.use_stdin = 1;
475         }
476
477         if (use_global_config) {
478                 char *user_config = expand_user_path("~/.gitconfig");
479                 char *xdg_config = xdg_config_home("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 ((actions & (ACTION_GET_COLOR|ACTION_GET_COLORBOOL)) && types) {
523                 error("--get-color and variable type are incoherent");
524                 usage_with_options(builtin_config_usage, builtin_config_options);
525         }
526
527         if (HAS_MULTI_BITS(actions)) {
528                 error("only one action at a time.");
529                 usage_with_options(builtin_config_usage, builtin_config_options);
530         }
531         if (actions == 0)
532                 switch (argc) {
533                 case 1: actions = ACTION_GET; break;
534                 case 2: actions = ACTION_SET; break;
535                 case 3: actions = ACTION_SET_ALL; break;
536                 default:
537                         usage_with_options(builtin_config_usage, builtin_config_options);
538                 }
539         if (omit_values &&
540             !(actions == ACTION_LIST || actions == ACTION_GET_REGEXP)) {
541                 error("--name-only is only applicable to --list or --get-regexp");
542                 usage_with_options(builtin_config_usage, builtin_config_options);
543         }
544         if (actions == ACTION_LIST) {
545                 check_argc(argc, 0, 0);
546                 if (git_config_with_options(show_all_config, NULL,
547                                             &given_config_source,
548                                             respect_includes) < 0) {
549                         if (given_config_source.file)
550                                 die_errno("unable to read config file '%s'",
551                                           given_config_source.file);
552                         else
553                                 die("error processing config file(s)");
554                 }
555         }
556         else if (actions == ACTION_EDIT) {
557                 char *config_file;
558
559                 check_argc(argc, 0, 0);
560                 if (!given_config_source.file && nongit)
561                         die("not in a git directory");
562                 if (given_config_source.use_stdin)
563                         die("editing stdin is not supported");
564                 if (given_config_source.blob)
565                         die("editing blobs is not supported");
566                 git_config(git_default_config, NULL);
567                 config_file = xstrdup(given_config_source.file ?
568                                       given_config_source.file : git_path("config"));
569                 if (use_global_config) {
570                         int fd = open(config_file, O_CREAT | O_EXCL | O_WRONLY, 0666);
571                         if (fd) {
572                                 char *content = default_user_config();
573                                 write_str_in_full(fd, content);
574                                 free(content);
575                                 close(fd);
576                         }
577                         else if (errno != EEXIST)
578                                 die_errno(_("cannot create configuration file %s"), config_file);
579                 }
580                 launch_editor(config_file, NULL, NULL);
581                 free(config_file);
582         }
583         else if (actions == ACTION_SET) {
584                 int ret;
585                 check_write();
586                 check_argc(argc, 2, 2);
587                 value = normalize_value(argv[0], argv[1]);
588                 ret = git_config_set_in_file_gently(given_config_source.file, argv[0], value);
589                 if (ret == CONFIG_NOTHING_SET)
590                         error("cannot overwrite multiple values with a single value\n"
591                         "       Use a regexp, --add or --replace-all to change %s.", argv[0]);
592                 return ret;
593         }
594         else if (actions == ACTION_SET_ALL) {
595                 check_write();
596                 check_argc(argc, 2, 3);
597                 value = normalize_value(argv[0], argv[1]);
598                 return git_config_set_multivar_in_file_gently(given_config_source.file,
599                                                               argv[0], value, argv[2], 0);
600         }
601         else if (actions == ACTION_ADD) {
602                 check_write();
603                 check_argc(argc, 2, 2);
604                 value = normalize_value(argv[0], argv[1]);
605                 return git_config_set_multivar_in_file_gently(given_config_source.file,
606                                                               argv[0], value,
607                                                               CONFIG_REGEX_NONE, 0);
608         }
609         else if (actions == ACTION_REPLACE_ALL) {
610                 check_write();
611                 check_argc(argc, 2, 3);
612                 value = normalize_value(argv[0], argv[1]);
613                 return git_config_set_multivar_in_file_gently(given_config_source.file,
614                                                               argv[0], value, argv[2], 1);
615         }
616         else if (actions == ACTION_GET) {
617                 check_argc(argc, 1, 2);
618                 return get_value(argv[0], argv[1]);
619         }
620         else if (actions == ACTION_GET_ALL) {
621                 do_all = 1;
622                 check_argc(argc, 1, 2);
623                 return get_value(argv[0], argv[1]);
624         }
625         else if (actions == ACTION_GET_REGEXP) {
626                 show_keys = 1;
627                 use_key_regexp = 1;
628                 do_all = 1;
629                 check_argc(argc, 1, 2);
630                 return get_value(argv[0], argv[1]);
631         }
632         else if (actions == ACTION_GET_URLMATCH) {
633                 check_argc(argc, 2, 2);
634                 return get_urlmatch(argv[0], argv[1]);
635         }
636         else if (actions == ACTION_UNSET) {
637                 check_write();
638                 check_argc(argc, 1, 2);
639                 if (argc == 2)
640                         return git_config_set_multivar_in_file_gently(given_config_source.file,
641                                                                       argv[0], NULL, argv[1], 0);
642                 else
643                         return git_config_set_in_file_gently(given_config_source.file,
644                                                              argv[0], NULL);
645         }
646         else if (actions == ACTION_UNSET_ALL) {
647                 check_write();
648                 check_argc(argc, 1, 2);
649                 return git_config_set_multivar_in_file_gently(given_config_source.file,
650                                                               argv[0], NULL, argv[1], 1);
651         }
652         else if (actions == ACTION_RENAME_SECTION) {
653                 int ret;
654                 check_write();
655                 check_argc(argc, 2, 2);
656                 ret = git_config_rename_section_in_file(given_config_source.file,
657                                                         argv[0], argv[1]);
658                 if (ret < 0)
659                         return ret;
660                 if (ret == 0)
661                         die("No such section!");
662         }
663         else if (actions == ACTION_REMOVE_SECTION) {
664                 int ret;
665                 check_write();
666                 check_argc(argc, 1, 1);
667                 ret = git_config_rename_section_in_file(given_config_source.file,
668                                                         argv[0], NULL);
669                 if (ret < 0)
670                         return ret;
671                 if (ret == 0)
672                         die("No such section!");
673         }
674         else if (actions == ACTION_GET_COLOR) {
675                 check_argc(argc, 1, 2);
676                 get_color(argv[0], argv[1]);
677         }
678         else if (actions == ACTION_GET_COLORBOOL) {
679                 check_argc(argc, 1, 2);
680                 if (argc == 2)
681                         color_stdout_is_tty = git_config_bool("command line", argv[1]);
682                 return get_colorbool(argv[0], argc == 2);
683         }
684
685         return 0;
686 }