kconfig: help includes dependency information

[Sam Ravnborg <sam@ravnborg.org>]

# This is a BitKeeper generated diff -Nru style patch.
#
# ChangeSet
#   2004/12/31 00:43:45+01:00 sam@mars.ravnborg.org 
#   kconfig: help includes dependency information
#   
#   When selecting help on a menu item display
#   "depends on:"
#   "selects:"
#   "selected by:"
#   
#   Only relevant headlines are displayed - so if no "selects:" appear then this menu
#   does not select a specific symbol.
#   Loosly based on a patch by: Cal Peake <cp@absolutedigital.net>
#   
#   Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
# 
# scripts/kconfig/mconf.c
#   2004/12/31 00:43:27+01:00 sam@mars.ravnborg.org +5 -5
#   display
#   "depends on:"
#   "selects:"
#   "selected by:"
#   
#   information when selecting help on a menu
# 
diff -Nru a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
--- a/scripts/kconfig/mconf.c	2004-12-31 00:46:29 +01:00
+++ b/scripts/kconfig/mconf.c	2004-12-31 00:46:29 +01:00
@@ -732,17 +732,17 @@
 static void show_help(struct menu *menu)
 {
 	const char *help;
-	char *helptext;
 	struct symbol *sym = menu->sym;
 
 	help = sym->help;
 	if (!help)
 		help = nohelp_text;
 	if (sym->name) {
-		helptext = malloc(strlen(sym->name) + strlen(help) + 16);
-		sprintf(helptext, "CONFIG_%s:\n\n%s", sym->name, help);
-		show_helptext(menu_get_prompt(menu), helptext);
-		free(helptext);
+		struct gstr str = str_init();
+		str_printf(&str, "CONFIG_%s:\n\n%s", sym->name, help);
+		show_expr(menu, &str);
+		show_helptext(menu_get_prompt(menu), str_get(&str));
+		str_del(&str);
 	} else
 		show_helptext(menu_get_prompt(menu), help);
 }