From 7fa37d98e9c07a792d186bc638431ba34d7a0968 Mon Sep 17 00:00:00 2001
From: Alexsandro Percy <alexsandro.percy@gmail.com>
Date: Tue, 13 Feb 2024 12:01:59 -0300
Subject: [PATCH] fix gsub to sub

---
 init.lua | 2 +-
 text.lua | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/init.lua b/init.lua
index 0234987..2689c5a 100644
--- a/init.lua
+++ b/init.lua
@@ -648,7 +648,7 @@ if airutils._use_signs_api then
                     if entity then
                         if entity.owner == name or minetest.check_player_privs(name, {protection_bypass=true}) then
                             if param then
-                                entity._ship_name = string.gsub(param, 1,20)
+                                entity._ship_name = string.sub(param, 1,20)
                             else
                                 entity._ship_name = ""
                             end
diff --git a/text.lua b/text.lua
index 463c6b7..616f209 100644
--- a/text.lua
+++ b/text.lua
@@ -176,6 +176,7 @@ local function make_text_texture(text, default_color, line_width, line_height, c
 end
 
 function airutils.convert_text_to_texture(text, default_color, horizontal_aligment)
+    text = text or ""
     default_color = default_color or 0
     horizontal_aligment = horizontal_aligment or 3
 	local font_size