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-rw-r--r--builtin/help.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/builtin/help.c b/builtin/help.c
index c024110531..299206eb57 100644
--- a/builtin/help.c
+++ b/builtin/help.c
@@ -8,6 +8,7 @@
#include "parse-options.h"
#include "run-command.h"
#include "column.h"
+#include "config-list.h"
#include "help.h"
#include "alias.h"
@@ -62,6 +63,91 @@ static const char * const builtin_help_usage[] = {
NULL
};
+struct slot_expansion {
+ const char *prefix;
+ const char *placeholder;
+ void (*fn)(struct string_list *list, const char *prefix);
+ int found;
+};
+
+static void list_config_help(int for_human)
+{
+ struct slot_expansion slot_expansions[] = {
+ { "advice", "*", list_config_advices },
+ { "color.branch", "<slot>", list_config_color_branch_slots },
+ { "color.decorate", "<slot>", list_config_color_decorate_slots },
+ { "color.diff", "<slot>", list_config_color_diff_slots },
+ { "color.grep", "<slot>", list_config_color_grep_slots },
+ { "color.interactive", "<slot>", list_config_color_interactive_slots },
+ { "color.remote", "<slot>", list_config_color_sideband_slots },
+ { "color.status", "<slot>", list_config_color_status_slots },
+ { "fsck", "<msg-id>", list_config_fsck_msg_ids },
+ { "receive.fsck", "<msg-id>", list_config_fsck_msg_ids },
+ { NULL, NULL, NULL }
+ };
+ const char **p;
+ struct slot_expansion *e;
+ struct string_list keys = STRING_LIST_INIT_DUP;
+ int i;
+
+ for (p = config_name_list; *p; p++) {
+ const char *var = *p;
+ struct strbuf sb = STRBUF_INIT;
+
+ for (e = slot_expansions; e->prefix; e++) {
+
+ strbuf_reset(&sb);
+ strbuf_addf(&sb, "%s.%s", e->prefix, e->placeholder);
+ if (!strcasecmp(var, sb.buf)) {
+ e->fn(&keys, e->prefix);
+ e->found++;
+ break;
+ }
+ }
+ strbuf_release(&sb);
+ if (!e->prefix)
+ string_list_append(&keys, var);
+ }
+
+ for (e = slot_expansions; e->prefix; e++)
+ if (!e->found)
+ BUG("slot_expansion %s.%s is not used",
+ e->prefix, e->placeholder);
+
+ string_list_sort(&keys);
+ for (i = 0; i < keys.nr; i++) {
+ const char *var = keys.items[i].string;
+ const char *wildcard, *tag, *cut;
+
+ if (for_human) {
+ puts(var);
+ continue;
+ }
+
+ wildcard = strchr(var, '*');
+ tag = strchr(var, '<');
+
+ if (!wildcard && !tag) {
+ puts(var);
+ continue;
+ }
+
+ if (wildcard && !tag)
+ cut = wildcard;
+ else if (!wildcard && tag)
+ cut = tag;
+ else
+ cut = wildcard < tag ? wildcard : tag;
+
+ /*
+ * We may produce duplicates, but that's up to
+ * git-completion.bash to handle
+ */
+ printf("%.*s\n", (int)(cut - var), var);
+ }
+ string_list_clear(&keys, 0);
+}
+
static enum help_format parse_help_format(const char *format)
{
if (!strcmp(format, "man"))