From cedd2092ebe402e0c6d600969ec926496a8a9d22 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Mon, 11 Sep 2006 11:07:24 -0300
Subject: 'coroutine.running' should return nil (instead of nothing) for main
 thread

---
 lbaselib.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

(limited to 'lbaselib.c')

diff --git a/lbaselib.c b/lbaselib.c
index 4bd6a1f9..a6412d3c 100644
--- a/lbaselib.c
+++ b/lbaselib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lbaselib.c,v 1.190 2006/05/31 16:50:40 roberto Exp roberto $
+** $Id: lbaselib.c,v 1.191 2006/06/02 15:34:00 roberto Exp roberto $
 ** Basic library
 ** See Copyright Notice in lua.h
 */
@@ -586,9 +586,8 @@ static int luaB_costatus (lua_State *L) {
 
 static int luaB_corunning (lua_State *L) {
   if (lua_pushthread(L))
-    return 0;  /* main thread is not a coroutine */
-  else
-    return 1;
+    lua_pushnil(L);  /* main thread is not a coroutine */
+  return 1;
 }
 
 
-- 
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