From 5d72755027ddf4e2e2715ae505c3437f9617a5b4 Mon Sep 17 00:00:00 2001
From: culb <the01culb@gmail.com>
Date: Mon, 27 Feb 2017 12:14:36 -0500
Subject: [PATCH] lua: Prevent from loading if it's already loaded

Closes #1958
---
 plugins/lua/lua.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/plugins/lua/lua.c b/plugins/lua/lua.c
index 0dc7aeda..d284d01a 100644
--- a/plugins/lua/lua.c
+++ b/plugins/lua/lua.c
@@ -1685,8 +1685,17 @@ static int command_lua(char *word[], char *word_eol[], void *userdata)
 	return HEXCHAT_EAT_ALL;
 }
 
+/* Reinitialization safegaurd */
+static int initialized = 0;
+
 G_MODULE_EXPORT int hexchat_plugin_init(hexchat_plugin *plugin_handle, char **name, char **description, char **version, char *arg)
 {
+	if(initialized != 0)
+	{
+		hexchat_print(plugin_handle, "Lua interface already loaded\n");
+		return 0;
+	}
+
 	if (g_str_has_prefix(LUA_VERSION, "Lua "))
 	{
 		strcat(plugin_version, "/");
@@ -1698,6 +1707,7 @@ G_MODULE_EXPORT int hexchat_plugin_init(hexchat_plugin *plugin_handle, char **na
 	*version = plugin_version;
 
 	ph = plugin_handle;
+	initialized = 1;
 
 	hexchat_hook_command(ph, "", HEXCHAT_PRI_NORM, command_console_exec, NULL, NULL);
 	hexchat_hook_command(ph, "LOAD", HEXCHAT_PRI_NORM, command_load, NULL, NULL);