Make use of stat.ctime configurable
[git/git.git] / help.c
CommitLineData
70827b15
LT
1/*
2 * builtin-help.c
3 *
4 * Builtin help-related commands (help, usage, version)
5 */
6#include "cache.h"
7#include "builtin.h"
8#include "exec_cmd.h"
9#include "common-cmds.h"
41eb33bd 10#include "parse-options.h"
64949984
CC
11#include "run-command.h"
12
69099d6b 13static struct man_viewer_list {
69099d6b 14 struct man_viewer_list *next;
7b15f872 15 char name[FLEX_ARRAY];
69099d6b 16} *man_viewer_list;
41eb33bd 17
7b15f872
CC
18static struct man_viewer_info_list {
19 struct man_viewer_info_list *next;
20 const char *info;
21 char name[FLEX_ARRAY];
22} *man_viewer_info_list;
23
41eb33bd
JK
24enum help_format {
25 HELP_FORMAT_MAN,
26 HELP_FORMAT_INFO,
27 HELP_FORMAT_WEB,
28};
29
30static int show_all = 0;
31static enum help_format help_format = HELP_FORMAT_MAN;
32static struct option builtin_help_options[] = {
33 OPT_BOOLEAN('a', "all", &show_all, "print all available commands"),
34 OPT_SET_INT('m', "man", &help_format, "show man page", HELP_FORMAT_MAN),
35 OPT_SET_INT('w', "web", &help_format, "show manual in web browser",
36 HELP_FORMAT_WEB),
37 OPT_SET_INT('i', "info", &help_format, "show info page",
38 HELP_FORMAT_INFO),
4637e47a 39 OPT_END(),
41eb33bd
JK
40};
41
42static const char * const builtin_help_usage[] = {
1b1dd23f 43 "git help [--all] [--man|--web|--info] [command]",
41eb33bd
JK
44 NULL
45};
46
47static enum help_format parse_help_format(const char *format)
70087cdb 48{
41eb33bd
JK
49 if (!strcmp(format, "man"))
50 return HELP_FORMAT_MAN;
51 if (!strcmp(format, "info"))
52 return HELP_FORMAT_INFO;
53 if (!strcmp(format, "web") || !strcmp(format, "html"))
54 return HELP_FORMAT_WEB;
70087cdb
CC
55 die("unrecognized help format '%s'", format);
56}
57
7b15f872
CC
58static const char *get_man_viewer_info(const char *name)
59{
60 struct man_viewer_info_list *viewer;
61
62 for (viewer = man_viewer_info_list; viewer; viewer = viewer->next)
63 {
64 if (!strcasecmp(name, viewer->name))
65 return viewer->info;
66 }
67 return NULL;
68}
69
69099d6b
CC
70static int check_emacsclient_version(void)
71{
72 struct strbuf buffer = STRBUF_INIT;
73 struct child_process ec_process;
74 const char *argv_ec[] = { "emacsclient", "--version", NULL };
75 int version;
76
77 /* emacsclient prints its version number on stderr */
78 memset(&ec_process, 0, sizeof(ec_process));
79 ec_process.argv = argv_ec;
80 ec_process.err = -1;
81 ec_process.stdout_to_stderr = 1;
82 if (start_command(&ec_process)) {
83 fprintf(stderr, "Failed to start emacsclient.\n");
84 return -1;
85 }
86 strbuf_read(&buffer, ec_process.err, 20);
87 close(ec_process.err);
88
89 /*
90 * Don't bother checking return value, because "emacsclient --version"
91 * seems to always exits with code 1.
92 */
93 finish_command(&ec_process);
94
95 if (prefixcmp(buffer.buf, "emacsclient")) {
96 fprintf(stderr, "Failed to parse emacsclient version.\n");
97 strbuf_release(&buffer);
98 return -1;
99 }
100
101 strbuf_remove(&buffer, 0, strlen("emacsclient"));
102 version = atoi(buffer.buf);
103
104 if (version < 22) {
105 fprintf(stderr,
106 "emacsclient version '%d' too old (< 22).\n",
107 version);
108 strbuf_release(&buffer);
109 return -1;
110 }
111
112 strbuf_release(&buffer);
113 return 0;
114}
115
7b15f872 116static void exec_woman_emacs(const char* path, const char *page)
69099d6b
CC
117{
118 if (!check_emacsclient_version()) {
119 /* This works only with emacsclient version >= 22. */
120 struct strbuf man_page = STRBUF_INIT;
7b15f872
CC
121
122 if (!path)
123 path = "emacsclient";
69099d6b 124 strbuf_addf(&man_page, "(woman \"%s\")", page);
7b15f872
CC
125 execlp(path, "emacsclient", "-e", man_page.buf, NULL);
126 warning("failed to exec '%s': %s", path, strerror(errno));
69099d6b
CC
127 }
128}
129
7b15f872 130static void exec_man_konqueror(const char* path, const char *page)
69099d6b
CC
131{
132 const char *display = getenv("DISPLAY");
133 if (display && *display) {
134 struct strbuf man_page = STRBUF_INIT;
7b15f872
CC
135 const char *filename = "kfmclient";
136
137 /* It's simpler to launch konqueror using kfmclient. */
138 if (path) {
139 const char *file = strrchr(path, '/');
140 if (file && !strcmp(file + 1, "konqueror")) {
141 char *new = xstrdup(path);
142 char *dest = strrchr(new, '/');
143
144 /* strlen("konqueror") == strlen("kfmclient") */
145 strcpy(dest + 1, "kfmclient");
146 path = new;
147 }
148 if (file)
149 filename = file;
150 } else
151 path = "kfmclient";
69099d6b 152 strbuf_addf(&man_page, "man:%s(1)", page);
7b15f872
CC
153 execlp(path, filename, "newTab", man_page.buf, NULL);
154 warning("failed to exec '%s': %s", path, strerror(errno));
69099d6b
CC
155 }
156}
157
7b15f872 158static void exec_man_man(const char* path, const char *page)
69099d6b 159{
7b15f872
CC
160 if (!path)
161 path = "man";
162 execlp(path, "man", page, NULL);
163 warning("failed to exec '%s': %s", path, strerror(errno));
69099d6b
CC
164}
165
a26a06af
CC
166static void exec_man_cmd(const char *cmd, const char *page)
167{
168 struct strbuf shell_cmd = STRBUF_INIT;
169 strbuf_addf(&shell_cmd, "%s %s", cmd, page);
170 execl("/bin/sh", "sh", "-c", shell_cmd.buf, NULL);
171 warning("failed to exec '%s': %s", cmd, strerror(errno));
172}
173
174static void add_man_viewer(const char *name)
69099d6b
CC
175{
176 struct man_viewer_list **p = &man_viewer_list;
7b15f872 177 size_t len = strlen(name);
69099d6b
CC
178
179 while (*p)
180 p = &((*p)->next);
7b15f872
CC
181 *p = xcalloc(1, (sizeof(**p) + len + 1));
182 strncpy((*p)->name, name, len);
183}
184
185static int supported_man_viewer(const char *name, size_t len)
186{
187 return (!strncasecmp("man", name, len) ||
188 !strncasecmp("woman", name, len) ||
189 !strncasecmp("konqueror", name, len));
69099d6b
CC
190}
191
7b15f872
CC
192static void do_add_man_viewer_info(const char *name,
193 size_t len,
194 const char *value)
195{
196 struct man_viewer_info_list *new = xcalloc(1, sizeof(*new) + len + 1);
197
198 strncpy(new->name, name, len);
199 new->info = xstrdup(value);
200 new->next = man_viewer_info_list;
201 man_viewer_info_list = new;
202}
203
204static int add_man_viewer_path(const char *name,
205 size_t len,
206 const char *value)
207{
208 if (supported_man_viewer(name, len))
209 do_add_man_viewer_info(name, len, value);
210 else
a26a06af
CC
211 warning("'%s': path for unsupported man viewer.\n"
212 "Please consider using 'man.<tool>.cmd' instead.",
213 name);
214
215 return 0;
216}
217
218static int add_man_viewer_cmd(const char *name,
219 size_t len,
220 const char *value)
221{
222 if (supported_man_viewer(name, len))
223 warning("'%s': cmd for supported man viewer.\n"
224 "Please consider using 'man.<tool>.path' instead.",
225 name);
226 else
227 do_add_man_viewer_info(name, len, value);
7b15f872
CC
228
229 return 0;
230}
231
232static int add_man_viewer_info(const char *var, const char *value)
233{
234 const char *name = var + 4;
235 const char *subkey = strrchr(name, '.');
236
237 if (!subkey)
238 return error("Config with no key for man viewer: %s", name);
239
240 if (!strcmp(subkey, ".path")) {
241 if (!value)
242 return config_error_nonbool(var);
243 return add_man_viewer_path(name, subkey - name, value);
244 }
a26a06af
CC
245 if (!strcmp(subkey, ".cmd")) {
246 if (!value)
247 return config_error_nonbool(var);
248 return add_man_viewer_cmd(name, subkey - name, value);
249 }
7b15f872
CC
250
251 warning("'%s': unsupported man viewer sub key.", subkey);
252 return 0;
253}
254
ef90d6d4 255static int git_help_config(const char *var, const char *value, void *cb)
70087cdb 256{
41eb33bd
JK
257 if (!strcmp(var, "help.format")) {
258 if (!value)
259 return config_error_nonbool(var);
260 help_format = parse_help_format(value);
261 return 0;
262 }
69099d6b
CC
263 if (!strcmp(var, "man.viewer")) {
264 if (!value)
265 return config_error_nonbool(var);
a26a06af
CC
266 add_man_viewer(value);
267 return 0;
69099d6b 268 }
7b15f872
CC
269 if (!prefixcmp(var, "man."))
270 return add_man_viewer_info(var, value);
271
ef90d6d4 272 return git_default_config(var, value, cb);
70087cdb
CC
273}
274
82e5a82f 275/* most GUI terminals set COLUMNS (although some don't export it) */
70827b15
LT
276static int term_columns(void)
277{
278 char *col_string = getenv("COLUMNS");
96f1e58f 279 int n_cols;
70827b15
LT
280
281 if (col_string && (n_cols = atoi(col_string)) > 0)
282 return n_cols;
283
284#ifdef TIOCGWINSZ
285 {
286 struct winsize ws;
287 if (!ioctl(1, TIOCGWINSZ, &ws)) {
288 if (ws.ws_col)
289 return ws.ws_col;
290 }
291 }
292#endif
293
294 return 80;
295}
296
70827b15
LT
297static inline void mput_char(char c, unsigned int num)
298{
299 while(num--)
300 putchar(c);
301}
302
1eb05690
SP
303static struct cmdnames {
304 int alloc;
305 int cnt;
306 struct cmdname {
307 size_t len;
308 char name[1];
309 } **names;
310} main_cmds, other_cmds;
311
312static void add_cmdname(struct cmdnames *cmds, const char *name, int len)
70827b15 313{
1eb05690
SP
314 struct cmdname *ent = xmalloc(sizeof(*ent) + len);
315
70827b15
LT
316 ent->len = len;
317 memcpy(ent->name, name, len);
318 ent->name[len] = 0;
1eb05690
SP
319
320 ALLOC_GROW(cmds->names, cmds->cnt + 1, cmds->alloc);
321 cmds->names[cmds->cnt++] = ent;
70827b15
LT
322}
323
324static int cmdname_compare(const void *a_, const void *b_)
325{
326 struct cmdname *a = *(struct cmdname **)a_;
327 struct cmdname *b = *(struct cmdname **)b_;
328 return strcmp(a->name, b->name);
329}
330
1eb05690
SP
331static void uniq(struct cmdnames *cmds)
332{
333 int i, j;
334
335 if (!cmds->cnt)
336 return;
337
338 for (i = j = 1; i < cmds->cnt; i++)
339 if (strcmp(cmds->names[i]->name, cmds->names[i-1]->name))
340 cmds->names[j++] = cmds->names[i];
341
342 cmds->cnt = j;
343}
344
f3fa1838
JH
345static void exclude_cmds(struct cmdnames *cmds, struct cmdnames *excludes)
346{
1eb05690
SP
347 int ci, cj, ei;
348 int cmp;
349
350 ci = cj = ei = 0;
351 while (ci < cmds->cnt && ei < excludes->cnt) {
352 cmp = strcmp(cmds->names[ci]->name, excludes->names[ei]->name);
353 if (cmp < 0)
354 cmds->names[cj++] = cmds->names[ci++];
355 else if (cmp == 0)
356 ci++, ei++;
357 else if (cmp > 0)
358 ei++;
359 }
360
361 while (ci < cmds->cnt)
362 cmds->names[cj++] = cmds->names[ci++];
363
364 cmds->cnt = cj;
365}
366
367static void pretty_print_string_list(struct cmdnames *cmds, int longest)
70827b15
LT
368{
369 int cols = 1, rows;
370 int space = longest + 1; /* min 1 SP between words */
371 int max_cols = term_columns() - 1; /* don't print *on* the edge */
372 int i, j;
373
374 if (space < max_cols)
375 cols = max_cols / space;
1eb05690 376 rows = (cmds->cnt + cols - 1) / cols;
70827b15
LT
377
378 for (i = 0; i < rows; i++) {
379 printf(" ");
380
381 for (j = 0; j < cols; j++) {
382 int n = j * rows + i;
383 int size = space;
1eb05690 384 if (n >= cmds->cnt)
70827b15 385 break;
1eb05690 386 if (j == cols-1 || n + rows >= cmds->cnt)
70827b15 387 size = 1;
1eb05690 388 printf("%-*s", size, cmds->names[n]->name);
70827b15
LT
389 }
390 putchar('\n');
391 }
392}
393
cc3b7a97
JS
394static int is_executable(const char *name)
395{
396 struct stat st;
397
398 if (stat(name, &st) || /* stat, not lstat */
399 !S_ISREG(st.st_mode))
400 return 0;
401
402#ifdef __MINGW32__
403 /* cannot trust the executable bit, peek into the file instead */
404 char buf[3] = { 0 };
405 int n;
406 int fd = open(name, O_RDONLY);
407 st.st_mode &= ~S_IXUSR;
408 if (fd >= 0) {
409 n = read(fd, buf, 2);
410 if (n == 2)
411 /* DOS executables start with "MZ" */
412 if (!strcmp(buf, "#!") || !strcmp(buf, "MZ"))
413 st.st_mode |= S_IXUSR;
414 close(fd);
415 }
416#endif
417 return st.st_mode & S_IXUSR;
418}
419
1eb05690
SP
420static unsigned int list_commands_in_dir(struct cmdnames *cmds,
421 const char *path)
70827b15
LT
422{
423 unsigned int longest = 0;
edb6ddc5
SP
424 const char *prefix = "git-";
425 int prefix_len = strlen(prefix);
1eb05690 426 DIR *dir = opendir(path);
70827b15 427 struct dirent *de;
f5d600e2
JS
428 struct strbuf buf = STRBUF_INIT;
429 int len;
70827b15 430
f5d600e2 431 if (!dir)
1eb05690 432 return 0;
70827b15 433
f5d600e2
JS
434 strbuf_addf(&buf, "%s/", path);
435 len = buf.len;
436
70827b15 437 while ((de = readdir(dir)) != NULL) {
70827b15
LT
438 int entlen;
439
edb6ddc5 440 if (prefixcmp(de->d_name, prefix))
70827b15 441 continue;
0966003c 442
f5d600e2
JS
443 strbuf_setlen(&buf, len);
444 strbuf_addstr(&buf, de->d_name);
445 if (!is_executable(buf.buf))
70827b15
LT
446 continue;
447
edb6ddc5 448 entlen = strlen(de->d_name) - prefix_len;
5bb1cda5 449 if (has_extension(de->d_name, ".exe"))
70827b15
LT
450 entlen -= 4;
451
452 if (longest < entlen)
453 longest = entlen;
454
1eb05690 455 add_cmdname(cmds, de->d_name + prefix_len, entlen);
70827b15
LT
456 }
457 closedir(dir);
f5d600e2 458 strbuf_release(&buf);
70827b15 459
1eb05690
SP
460 return longest;
461}
462
2156435f 463static unsigned int load_command_list(void)
1eb05690
SP
464{
465 unsigned int longest = 0;
466 unsigned int len;
467 const char *env_path = getenv("PATH");
468 char *paths, *path, *colon;
469 const char *exec_path = git_exec_path();
470
471 if (exec_path)
472 longest = list_commands_in_dir(&main_cmds, exec_path);
473
474 if (!env_path) {
475 fprintf(stderr, "PATH not set\n");
476 exit(1);
477 }
478
479 path = paths = xstrdup(env_path);
480 while (1) {
cc3b7a97 481 if ((colon = strchr(path, PATH_SEP)))
1eb05690
SP
482 *colon = 0;
483
484 len = list_commands_in_dir(&other_cmds, path);
485 if (len > longest)
486 longest = len;
487
488 if (!colon)
489 break;
490 path = colon + 1;
491 }
492 free(paths);
493
494 qsort(main_cmds.names, main_cmds.cnt,
495 sizeof(*main_cmds.names), cmdname_compare);
496 uniq(&main_cmds);
497
498 qsort(other_cmds.names, other_cmds.cnt,
499 sizeof(*other_cmds.names), cmdname_compare);
500 uniq(&other_cmds);
501 exclude_cmds(&other_cmds, &main_cmds);
502
2156435f
JK
503 return longest;
504}
505
506static void list_commands(void)
507{
508 unsigned int longest = load_command_list();
509 const char *exec_path = git_exec_path();
510
1eb05690
SP
511 if (main_cmds.cnt) {
512 printf("available git commands in '%s'\n", exec_path);
513 printf("----------------------------");
514 mput_char('-', strlen(exec_path));
515 putchar('\n');
516 pretty_print_string_list(&main_cmds, longest);
517 putchar('\n');
518 }
519
520 if (other_cmds.cnt) {
521 printf("git commands available from elsewhere on your $PATH\n");
522 printf("---------------------------------------------------\n");
523 pretty_print_string_list(&other_cmds, longest);
524 putchar('\n');
525 }
70827b15
LT
526}
527
3d7e2d85 528void list_common_cmds_help(void)
70827b15
LT
529{
530 int i, longest = 0;
531
532 for (i = 0; i < ARRAY_SIZE(common_cmds); i++) {
533 if (longest < strlen(common_cmds[i].name))
534 longest = strlen(common_cmds[i].name);
535 }
536
537 puts("The most commonly used git commands are:");
538 for (i = 0; i < ARRAY_SIZE(common_cmds); i++) {
4f75b115
RS
539 printf(" %s ", common_cmds[i].name);
540 mput_char(' ', longest - strlen(common_cmds[i].name));
70827b15
LT
541 puts(common_cmds[i].help);
542 }
70827b15
LT
543}
544
2156435f
JK
545static int is_in_cmdlist(struct cmdnames *c, const char *s)
546{
547 int i;
548 for (i = 0; i < c->cnt; i++)
549 if (!strcmp(s, c->names[i]->name))
550 return 1;
551 return 0;
552}
553
554static int is_git_command(const char *s)
555{
556 load_command_list();
557 return is_in_cmdlist(&main_cmds, s) ||
558 is_in_cmdlist(&other_cmds, s);
559}
560
2dce956e
CC
561static const char *prepend(const char *prefix, const char *cmd)
562{
563 size_t pre_len = strlen(prefix);
564 size_t cmd_len = strlen(cmd);
565 char *p = xmalloc(pre_len + cmd_len + 1);
566 memcpy(p, prefix, pre_len);
567 strcpy(p + pre_len, cmd);
568 return p;
569}
570
df55c9cb 571static const char *cmd_to_page(const char *git_cmd)
70827b15 572{
5d6491c7
CC
573 if (!git_cmd)
574 return "git";
575 else if (!prefixcmp(git_cmd, "git"))
df55c9cb 576 return git_cmd;
2dce956e
CC
577 else if (is_git_command(git_cmd))
578 return prepend("git-", git_cmd);
579 else
580 return prepend("git", git_cmd);
df55c9cb 581}
70827b15 582
8e566f24
SO
583static void setup_man_path(void)
584{
585 struct strbuf new_path;
586 const char *old_path = getenv("MANPATH");
587
588 strbuf_init(&new_path, 0);
589
590 /* We should always put ':' after our path. If there is no
591 * old_path, the ':' at the end will let 'man' to try
592 * system-wide paths after ours to find the manual page. If
593 * there is old_path, we need ':' as delimiter. */
594 strbuf_addstr(&new_path, GIT_MAN_PATH);
595 strbuf_addch(&new_path, ':');
596 if (old_path)
597 strbuf_addstr(&new_path, old_path);
598
599 setenv("MANPATH", new_path.buf, 1);
600
601 strbuf_release(&new_path);
602}
603
7b15f872
CC
604static void exec_viewer(const char *name, const char *page)
605{
a26a06af 606 const char *info = get_man_viewer_info(name);
7b15f872
CC
607
608 if (!strcasecmp(name, "man"))
a26a06af 609 exec_man_man(info, page);
7b15f872 610 else if (!strcasecmp(name, "woman"))
a26a06af 611 exec_woman_emacs(info, page);
7b15f872 612 else if (!strcasecmp(name, "konqueror"))
a26a06af
CC
613 exec_man_konqueror(info, page);
614 else if (info)
615 exec_man_cmd(info, page);
7b15f872 616 else
a26a06af 617 warning("'%s': unknown man viewer.", name);
7b15f872
CC
618}
619
df55c9cb
CC
620static void show_man_page(const char *git_cmd)
621{
69099d6b 622 struct man_viewer_list *viewer;
df55c9cb 623 const char *page = cmd_to_page(git_cmd);
69099d6b 624
8e566f24 625 setup_man_path();
69099d6b
CC
626 for (viewer = man_viewer_list; viewer; viewer = viewer->next)
627 {
7b15f872 628 exec_viewer(viewer->name, page); /* will return when unable */
69099d6b 629 }
7b15f872 630 exec_viewer("man", page);
69099d6b 631 die("no man viewer handled the request");
70827b15
LT
632}
633
df55c9cb
CC
634static void show_info_page(const char *git_cmd)
635{
636 const char *page = cmd_to_page(git_cmd);
a149a1a4 637 setenv("INFOPATH", GIT_INFO_PATH, 1);
78d39f98 638 execlp("info", "info", "gitman", page, NULL);
df55c9cb
CC
639}
640
482cce82
CC
641static void get_html_page_path(struct strbuf *page_path, const char *page)
642{
643 struct stat st;
868da8d5 644 const char *html_path = system_path(GIT_HTML_PATH);
482cce82
CC
645
646 /* Check that we have a git documentation directory. */
868da8d5
SP
647 if (stat(mkpath("%s/git.html", html_path), &st)
648 || !S_ISREG(st.st_mode))
649 die("'%s': not a documentation directory.", html_path);
482cce82
CC
650
651 strbuf_init(page_path, 0);
868da8d5 652 strbuf_addf(page_path, "%s/%s.html", html_path, page);
482cce82
CC
653}
654
4804aabc
SP
655/*
656 * If open_html is not defined in a platform-specific way (see for
657 * example compat/mingw.h), we use the script web--browse to display
658 * HTML.
659 */
660#ifndef open_html
661void open_html(const char *path)
662{
663 execl_git_cmd("web--browse", "-c", "help.browser", path, NULL);
664}
665#endif
666
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667static void show_html_page(const char *git_cmd)
668{
669 const char *page = cmd_to_page(git_cmd);
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670 struct strbuf page_path; /* it leaks but we exec bellow */
671
672 get_html_page_path(&page_path, page);
673
4804aabc 674 open_html(page_path.buf);
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675}
676
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677void help_unknown_cmd(const char *cmd)
678{
a238917b 679 fprintf(stderr, "git: '%s' is not a git-command. See 'git --help'.\n", cmd);
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680 exit(1);
681}
682
a633fca0 683int cmd_version(int argc, const char **argv, const char *prefix)
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684{
685 printf("git version %s\n", git_version_string);
686 return 0;
687}
688
5d6491c7 689int cmd_help(int argc, const char **argv, const char *prefix)
70827b15 690{
41eb33bd 691 int nongit;
2156435f 692 const char *alias;
5d6491c7 693
41eb33bd 694 setup_git_directory_gently(&nongit);
ef90d6d4 695 git_config(git_help_config, NULL);
822a7d50 696
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697 argc = parse_options(argc, argv, builtin_help_options,
698 builtin_help_usage, 0);
699
700 if (show_all) {
822a7d50 701 printf("usage: %s\n\n", git_usage_string);
1eb05690 702 list_commands();
b7d96819 703 printf("%s\n", git_more_info_string);
41eb33bd 704 return 0;
822a7d50 705 }
df55c9cb 706
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707 if (!argv[0]) {
708 printf("usage: %s\n\n", git_usage_string);
709 list_common_cmds_help();
b7d96819 710 printf("\n%s\n", git_more_info_string);
41eb33bd 711 return 0;
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712 }
713
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714 alias = alias_lookup(argv[0]);
715 if (alias && !is_git_command(argv[0])) {
716 printf("`git %s' is aliased to `%s'\n", argv[0], alias);
717 return 0;
718 }
719
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720 switch (help_format) {
721 case HELP_FORMAT_MAN:
722 show_man_page(argv[0]);
723 break;
724 case HELP_FORMAT_INFO:
725 show_info_page(argv[0]);
726 break;
727 case HELP_FORMAT_WEB:
728 show_html_page(argv[0]);
729 break;
70087cdb 730 }
822a7d50 731
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732 return 0;
733}