Merge branch 'js/fsck-tag-validation'
[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 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.use_stdin)
364                 die("writing to stdin is not supported");
365
366         if (given_config_source.blob)
367                 die("writing config blobs is not supported");
368 }
369
370 struct urlmatch_current_candidate_value {
371         char value_is_null;
372         struct strbuf value;
373 };
374
375 static int urlmatch_collect_fn(const char *var, const char *value, void *cb)
376 {
377         struct string_list *values = cb;
378         struct string_list_item *item = string_list_insert(values, var);
379         struct urlmatch_current_candidate_value *matched = item->util;
380
381         if (!matched) {
382                 matched = xmalloc(sizeof(*matched));
383                 strbuf_init(&matched->value, 0);
384                 item->util = matched;
385         } else {
386                 strbuf_reset(&matched->value);
387         }
388
389         if (value) {
390                 strbuf_addstr(&matched->value, value);
391                 matched->value_is_null = 0;
392         } else {
393                 matched->value_is_null = 1;
394         }
395         return 0;
396 }
397
398 static int get_urlmatch(const char *var, const char *url)
399 {
400         char *section_tail;
401         struct string_list_item *item;
402         struct urlmatch_config config = { STRING_LIST_INIT_DUP };
403         struct string_list values = STRING_LIST_INIT_DUP;
404
405         config.collect_fn = urlmatch_collect_fn;
406         config.cascade_fn = NULL;
407         config.cb = &values;
408
409         if (!url_normalize(url, &config.url))
410                 die("%s", config.url.err);
411
412         config.section = xstrdup_tolower(var);
413         section_tail = strchr(config.section, '.');
414         if (section_tail) {
415                 *section_tail = '\0';
416                 config.key = section_tail + 1;
417                 show_keys = 0;
418         } else {
419                 config.key = NULL;
420                 show_keys = 1;
421         }
422
423         git_config_with_options(urlmatch_config_entry, &config,
424                                 &given_config_source, respect_includes);
425
426         for_each_string_list_item(item, &values) {
427                 struct urlmatch_current_candidate_value *matched = item->util;
428                 struct strbuf key = STRBUF_INIT;
429                 struct strbuf buf = STRBUF_INIT;
430
431                 strbuf_addstr(&key, item->string);
432                 format_config(&buf, key.buf,
433                               matched->value_is_null ? NULL : matched->value.buf);
434                 fwrite(buf.buf, 1, buf.len, stdout);
435                 strbuf_release(&key);
436                 strbuf_release(&buf);
437
438                 strbuf_release(&matched->value);
439         }
440         string_list_clear(&config.vars, 1);
441         string_list_clear(&values, 1);
442         free(config.url.url);
443
444         free((void *)config.section);
445         return 0;
446 }
447
448 static char *default_user_config(void)
449 {
450         struct strbuf buf = STRBUF_INIT;
451         strbuf_addf(&buf,
452                     _("# This is Git's per-user configuration file.\n"
453                       "[core]\n"
454                       "# Please adapt and uncomment the following lines:\n"
455                       "#        user = %s\n"
456                       "#        email = %s\n"),
457                     ident_default_name(),
458                     ident_default_email());
459         return strbuf_detach(&buf, NULL);
460 }
461
462 int cmd_config(int argc, const char **argv, const char *prefix)
463 {
464         int nongit = !startup_info->have_repository;
465         char *value;
466
467         given_config_source.file = getenv(CONFIG_ENVIRONMENT);
468
469         argc = parse_options(argc, argv, prefix, builtin_config_options,
470                              builtin_config_usage,
471                              PARSE_OPT_STOP_AT_NON_OPTION);
472
473         if (use_global_config + use_system_config + use_local_config +
474             !!given_config_source.file + !!given_config_source.blob > 1) {
475                 error("only one config file at a time.");
476                 usage_with_options(builtin_config_usage, builtin_config_options);
477         }
478
479         if (given_config_source.file &&
480                         !strcmp(given_config_source.file, "-")) {
481                 given_config_source.file = NULL;
482                 given_config_source.use_stdin = 1;
483         }
484
485         if (use_global_config) {
486                 char *user_config = NULL;
487                 char *xdg_config = NULL;
488
489                 home_config_paths(&user_config, &xdg_config, "config");
490
491                 if (!user_config)
492                         /*
493                          * It is unknown if HOME/.gitconfig exists, so
494                          * we do not know if we should write to XDG
495                          * location; error out even if XDG_CONFIG_HOME
496                          * is set and points at a sane location.
497                          */
498                         die("$HOME not set");
499
500                 if (access_or_warn(user_config, R_OK, 0) &&
501                     xdg_config && !access_or_warn(xdg_config, R_OK, 0))
502                         given_config_source.file = xdg_config;
503                 else
504                         given_config_source.file = user_config;
505         }
506         else if (use_system_config)
507                 given_config_source.file = git_etc_gitconfig();
508         else if (use_local_config)
509                 given_config_source.file = git_pathdup("config");
510         else if (given_config_source.file) {
511                 if (!is_absolute_path(given_config_source.file) && prefix)
512                         given_config_source.file =
513                                 xstrdup(prefix_filename(prefix,
514                                                         strlen(prefix),
515                                                         given_config_source.file));
516         }
517
518         if (respect_includes == -1)
519                 respect_includes = !given_config_source.file;
520
521         if (end_null) {
522                 term = '\0';
523                 delim = '\n';
524                 key_delim = '\n';
525         }
526
527         if (HAS_MULTI_BITS(types)) {
528                 error("only one type at a time.");
529                 usage_with_options(builtin_config_usage, builtin_config_options);
530         }
531
532         if (get_color_slot)
533             actions |= ACTION_GET_COLOR;
534         if (get_colorbool_slot)
535             actions |= ACTION_GET_COLORBOOL;
536
537         if ((get_color_slot || get_colorbool_slot) && types) {
538                 error("--get-color and variable type are incoherent");
539                 usage_with_options(builtin_config_usage, builtin_config_options);
540         }
541
542         if (HAS_MULTI_BITS(actions)) {
543                 error("only one action at a time.");
544                 usage_with_options(builtin_config_usage, builtin_config_options);
545         }
546         if (actions == 0)
547                 switch (argc) {
548                 case 1: actions = ACTION_GET; break;
549                 case 2: actions = ACTION_SET; break;
550                 case 3: actions = ACTION_SET_ALL; break;
551                 default:
552                         usage_with_options(builtin_config_usage, builtin_config_options);
553                 }
554
555         if (actions == ACTION_LIST) {
556                 check_argc(argc, 0, 0);
557                 if (git_config_with_options(show_all_config, NULL,
558                                             &given_config_source,
559                                             respect_includes) < 0) {
560                         if (given_config_source.file)
561                                 die_errno("unable to read config file '%s'",
562                                           given_config_source.file);
563                         else
564                                 die("error processing config file(s)");
565                 }
566         }
567         else if (actions == ACTION_EDIT) {
568                 const char *config_file = given_config_source.file ?
569                         given_config_source.file : git_path("config");
570                 check_argc(argc, 0, 0);
571                 if (!given_config_source.file && nongit)
572                         die("not in a git directory");
573                 if (given_config_source.use_stdin)
574                         die("editing stdin is not supported");
575                 if (given_config_source.blob)
576                         die("editing blobs is not supported");
577                 git_config(git_default_config, NULL);
578                 if (use_global_config) {
579                         int fd = open(config_file, O_CREAT | O_EXCL | O_WRONLY, 0666);
580                         if (fd) {
581                                 char *content = default_user_config();
582                                 write_str_in_full(fd, content);
583                                 free(content);
584                                 close(fd);
585                         }
586                         else if (errno != EEXIST)
587                                 die_errno(_("cannot create configuration file %s"), config_file);
588                 }
589                 launch_editor(config_file, NULL, NULL);
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                 get_color(argv[0]);
684         }
685         else if (actions == ACTION_GET_COLORBOOL) {
686                 if (argc == 1)
687                         color_stdout_is_tty = git_config_bool("command line", argv[0]);
688                 return get_colorbool(argc != 0);
689         }
690
691         return 0;
692 }