built-in add -i: support ? (prompt help)

With this change, we print out the same colored help text that the
Perl-based `git add -i` prints in the main loop when question mark is
entered.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Johannes Schindelin 2019-11-15 11:11:18 +00:00 committed by Junio C Hamano
parent 76b743234c
commit 68db1cbf8e

View file

@ -11,6 +11,7 @@ struct add_i_state {
struct repository *r;
int use_color;
char header_color[COLOR_MAXLEN];
char help_color[COLOR_MAXLEN];
};
static void init_color(struct repository *r, struct add_i_state *s,
@ -43,6 +44,7 @@ static void init_add_i_state(struct add_i_state *s, struct repository *r)
s->use_color = want_color(s->use_color);
init_color(r, s, "header", s->header_color, GIT_COLOR_BOLD);
init_color(r, s, "help", s->help_color, GIT_COLOR_BOLD_RED);
}
/*
@ -210,6 +212,7 @@ struct list_and_choose_options {
struct list_options list_opts;
const char *prompt;
void (*print_help)(struct add_i_state *s);
};
#define LIST_AND_CHOOSE_ERROR (-1)
@ -250,6 +253,11 @@ static ssize_t list_and_choose(struct add_i_state *s,
if (!input.len)
break;
if (!strcmp(input.buf, "?")) {
opts->print_help(s);
continue;
}
p = input.buf;
for (;;) {
size_t sep = strcspn(p, " \t\r\n,");
@ -515,12 +523,24 @@ static void print_command_item(int i, struct string_list_item *item,
item->string + util->prefix_length);
}
static void command_prompt_help(struct add_i_state *s)
{
const char *help_color = s->help_color;
color_fprintf_ln(stdout, help_color, "%s", _("Prompt help:"));
color_fprintf_ln(stdout, help_color, "1 - %s",
_("select a numbered item"));
color_fprintf_ln(stdout, help_color, "foo - %s",
_("select item based on unique prefix"));
color_fprintf_ln(stdout, help_color, " - %s",
_("(empty) select nothing"));
}
int run_add_i(struct repository *r, const struct pathspec *ps)
{
struct add_i_state s = { NULL };
struct list_and_choose_options main_loop_opts = {
{ 4, N_("*** Commands ***"), print_command_item, NULL },
N_("What now")
N_("What now"), command_prompt_help
};
struct {
const char *string;