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git: support --list-cmds=list-<category>

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This allows us to select any group of commands by a category defined
in command-list.txt. This is an internal/hidden option so we don't
have to be picky about the category name or worried about exposing too
much.

This will be used later by git-completion.bash to retrieve certain
command groups.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Nguyễn Thái Ngọc Duy
2018-05-20 20:40:00 +02:00
committed by Junio C Hamano
parent 6bb2dc0b94
commit 3c7777672b
5 changed files with 51 additions and 1 deletions
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23
help.c
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@ -329,6 +329,29 @@ void list_all_other_cmds(struct string_list *list)
clean_cmdnames(&other_cmds);
}
void list_cmds_by_category(struct string_list *list,
const char *cat)
{
int i, n = ARRAY_SIZE(command_list);
uint32_t cat_id = 0;
for (i = 0; category_names[i]; i++) {
if (!strcmp(cat, category_names[i])) {
cat_id = 1UL << i;
break;
}
}
if (!cat_id)
die(_("unsupported command listing type '%s'"), cat);
for (i = 0; i < n; i++) {
struct cmdname_help *cmd = command_list + i;
if (cmd->category & cat_id)
string_list_append(list, drop_prefix(cmd->name));
}
}
int is_in_cmdlist(struct cmdnames *c, const char *s)
{
int i;