1 files changed, 2 insertions, 0 deletions

diff --git a/lobject.h b/lobject.h
index b42539cf..169512f8 100644
--- a/lobject.h
+++ b/lobject.h
@@ -256,6 +256,8 @@ typedef union {
 
 
 #define l_isfalse(o)    (ttisfalse(o) || ttisnil(o))
+#define tagisfalse(t)   ((t) == LUA_VFALSE || novariant(t) == LUA_TNIL)
+
 
 
 #define setbfvalue(obj)         settt_(obj, LUA_VFALSE)