format text message "too much lines"

removes now whitespaces before and after a linebreak.

init.lua

@@ -110,19 +110,19 @@ arrow_signs.savetext = function(pos, formname, fields, sender)
 			minetest.chat_send_player(sender:get_player_name(), "error: you don't have permission to edit the sign. you need the interact priv")
 		return
 		end
+		if minetest.is_protected(pos, sender:get_player_name()) then
+			minetest.record_protection_violation(pos, sender:get_player_name())
+			return
+		end
 		local meta = minetest.get_meta(pos)
 		fields.text = fields.text or ""
 		minetest.log("action", (sender:get_player_name() or "").." wrote \""..fields.text..
 				"\" to sign at "..minetest.pos_to_string(pos));
 		meta:set_string("text", fields.text)
-		local text = arrow_signs.create_lines(fields.text)
+		local text,lines = arrow_signs.create_lines(fields.text)
 		meta:set_string("infotext", '"'..text..'"')
-		local i=0
-		for wort in text:gfind("\n") do
-		i=i+1
-        end
-		if i > 4 then
-		minetest.chat_send_player(sender:get_player_name(),"\tInformation: \nYou've written more than 5 lines. \n it may be that not all lines are displayed. \n Please remove the last entry")
+		if lines > 4 then
+			minetest.chat_send_player(sender:get_player_name(),"Information: \nYou've written more than 5 lines. \nIt may be that not all lines are displayed. \nPlease remove the last entry")
 		end
 	return true
 	end
@@ -130,9 +130,9 @@ end
 
 --this function creates the linebreaks
 arrow_signs.create_lines = function(text)
-	text = text:gsub("/", "\"\n\"")
-	text = text:gsub("|", "\"\n\"")
-	return text
+	local text, n = text:gsub("[ ]*(%|)[ ]*", '"\n"')--search for |
+	local text, m = text:gsub("[ ]*(%/)[ ]*", '"\n"')--search for /
+	return text, n+m
 end
 
 minetest.override_item("default:sign_wall", {