kconfig: menuconfig: remove jump_key::index

You do not need to remember the index of each jump key because you can
count it up after a key is pressed.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Jesse Taube <Mr.Bossman075@gmail.com>

scripts/kconfig/expr.h

@@ -275,7 +275,6 @@ struct jump_key {
 	struct list_head entries;
 	size_t offset;
 	struct menu *target;
-	int index;
 };
 
 extern struct file *file_list;

scripts/kconfig/mconf.c

@@ -22,8 +22,6 @@
 #include "lkc.h"
 #include "lxdialog/dialog.h"
 
-#define JUMP_NB			9
-
 static const char mconf_readme[] =
 "Overview\n"
 "--------\n"
@@ -402,18 +400,21 @@ static int handle_search_keys(int key, size_t start, size_t end, void *_data)
 {
 	struct search_data *data = _data;
 	struct jump_key *pos;
+	int index = 0;
 
 	if (key < '1' || key > '9')
 		return 0;
 
 	list_for_each_entry(pos, data->head, entries) {
+		index = next_jump_key(index);
+
 		if (pos->offset < start)
 			continue;
 
 		if (pos->offset >= end)
 			break;
 
-		if (key == '1' + (pos->index % JUMP_NB)) {
+		if (key == index) {
 			data->target = pos->target;
 			return 1;
 		}

scripts/kconfig/menu.c

@@ -735,15 +735,7 @@ static void get_prompt_str(struct gstr *r, struct property *prop,
 	}
 	if (head && location) {
 		jump = xmalloc(sizeof(struct jump_key));
-
 		jump->target = location;
-
-		if (list_empty(head))
-			jump->index = 0;
-		else
-			jump->index = list_entry(head->prev, struct jump_key,
-						 entries)->index + 1;
-
 		list_add_tail(&jump->entries, head);
 	}