word-wrap book text

This change word-wraps text when reading a book.

mods/default/craftitems.lua

@@ -28,8 +28,9 @@ local function book_on_use(itemstack, user, pointed_thing)
 			"button_exit[2.5,7.5;3,1;save;Save]"
 	else
 		formspec = "size[8,8]"..default.gui_bg..
-			"label[1,0.5;"..minetest.formspec_escape(title).."]"..
-			"label[0.5,1.5;"..minetest.formspec_escape(text).."]"
+			"label[0.5,0.5;by "..owner.."]"..
+			"label[0.5,0;"..minetest.formspec_escape(title).."]"..
+			"textarea[0.5,1.5;7.5,7;;"..minetest.formspec_escape(text)..";]"
 	end
 	minetest.show_formspec(user:get_player_name(), "default:book", formspec)
 end