commit 6faa447282fe90d42e0513af46c13f20b4b327d4
Author: Yann E. MORIN <yann.morin.1998@free.fr>
Date:   Wed Nov 13 22:45:02 2013 +0100

    support/kconfig: fix 'space' to (de)select options
    
    In case a menu has comment without letters/numbers (eg. characters
    matching the regexp '^[^[:alpha:][:digit:]]+$', for example - or *),
    hitting space will cycle through those comments, rather than
    selecting/deselecting the currently-highlighted option.
    
    This is the behaviour of hitting any letter/digit: jump to the next
    option which prompt starts with that letter. The only letters that
    do not behave as such are 'y' 'm' and 'n'. Prompts that start with
    one of those three letters are instead matched on the first letter
    that is not 'y', 'm' or 'n'.
    
    Fix that by treating 'space' as we treat y/m/n, ie. as an action key,
    not as shortcut to jump to  prompt.
    
    Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
    Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
    Cc: Peter Korsgaard <jacmet@uclibc.org>
    Cc: Samuel Martin <s.martin49@gmail.com>
    Cc: Thomas De Schampheleire <patrickdepinguin@gmail.com>
    ---
    Note: I'll be running this upstream soonish.

Index: kconfig/lxdialog/menubox.c
===================================================================
--- kconfig.orig/lxdialog/menubox.c
+++ kconfig/lxdialog/menubox.c
@@ -285,7 +285,7 @@ do_resize:
 		if (key < 256 && isalpha(key))
 			key = tolower(key);
 
-		if (strchr("ynmh", key))
+		if (strchr("ynmh ", key))
 			i = max_choice;
 		else {
 			for (i = choice + 1; i < max_choice; i++) {