From bf0e47f99f0ede6cbfb30c1f7aafdd2f1eca8683 Mon Sep 17 00:00:00 2001
From: Robin Haberkorn <robin.haberkorn@googlemail.com>
Date: Thu, 7 Jan 2016 01:02:33 +0100
Subject: improve error messages in case loading applause.lua fails

---
 applause.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

(limited to 'applause.c')

diff --git a/applause.c b/applause.c
index f0e5034..99b5453 100644
--- a/applause.c
+++ b/applause.c
@@ -886,13 +886,17 @@ main(int argc, char **argv)
 
 	luaL_openlibs(L);
 
-	if (luaL_loadfile(L, LUA_MODULE) || lua_pcall(L, 0, 0, 0)) {
-		/* FIXME: pop error message */
-		fprintf(stderr, "Error loading Lua module %s.\n",
-		        LUA_MODULE);
+	lua_pushcfunction(L, traceback);
+
+	if (luaL_loadfile(L, LUA_MODULE) || lua_pcall(L, 0, 0, -2)) {
+		fprintf(stderr, "Error loading Lua module %s: %s\n",
+		        LUA_MODULE, lua_tostring(L, -1));
 		exit(EXIT_FAILURE);
 	}
 
+	/* remove traceback function */
+	lua_remove(L, -1);
+
 	init_audio(buffer_size);
 
 	/*
-- 
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