Menuconfig and !isalpha() characters in comment

Hi,

first let me apologize to report bug which does not trigger in kernel tree, but I'd rather see it fixed here.

As a testcase apply following patch and run 'make menuconfig ARCH=arm' Now pressing <space> key no longer toggles selected menuconfig entry, but rather selects first, second and fourth line of added comment.

How would prefered fix look like? I wouldn't allow comment selection at first place, but lets wait to some conclusion with good chance to be accepted in mailine.

index 9c0690b..eb89e78 100644
@@ -3,6 +3,11 @@
 # see Documentation/kbuild/kconfig-language.txt.
 #
 
+comment "----------------"
+comment "................"
+comment "Some comment    "
+comment "----------------"
+
 mainmenu "Linux Kernel Configuration"
 
 config ARM

Best regards,
ladis