From 42f5389fb8dbbb60afcd99cb1cf6676e94f5715d Mon Sep 17 00:00:00 2001
From: SquidDev <bonzoweb@hotmail.co.uk>
Date: Sun, 29 Dec 2019 18:49:35 +0000
Subject: [PATCH] Make Lua's "exit" function a little prettier

"exit" now has a custom __tostring method, which prints an explanation
message. This is very similar to how Python achives the same
functionality:

    lua> exit
    Call exit() to exit
    lua> exit()
    > Actually leaves the REPL
---
 .../assets/computercraft/lua/rom/programs/lua.lua          | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/main/resources/assets/computercraft/lua/rom/programs/lua.lua b/src/main/resources/assets/computercraft/lua/rom/programs/lua.lua
index 3535b19df..63d4c6add 100644
--- a/src/main/resources/assets/computercraft/lua/rom/programs/lua.lua
+++ b/src/main/resources/assets/computercraft/lua/rom/programs/lua.lua
@@ -9,9 +9,10 @@ end
 local bRunning = true
 local tCommandHistory = {}
 local tEnv = {
-    ["exit"] = function()
-        bRunning = false
-    end,
+    ["exit"] = setmetatable({}, {
+        __tostring = function() return "Call exit() to exit" end,
+        __call = function() bRunning = false end,
+    }),
     ["_echo"] = function( ... )
         return ...
     end,