provide stack indices for args and add HS_ANY typecheck test

1 files changed, 4 insertions, 2 deletions

diff --git a/README.md b/README.md
index 05f4ae7..33cdece 100644
--- a/README.md
+++ b/README.md
@@ -76,20 +76,22 @@ performs typechecking and in case of an error throws with helpful error
 messages. `hs_parse_args_fast()` does not perform typechecking, and as a 
 result has much less friendly error messages.
 
-`HS_TBL`, `HS_FUNC`, `HS_NIL`, and `HS_ANY` do not take a pointer, and are 
-simply used to confirm the presence of an argument on the stack.
+`HS_TBL`, `HS_FUNC`, `HS_NIL`, and `HS_ANY` take a pointer to an integer 
+that will be filled with the stack index of the argument.
 
 ```C
 int some_lua_binding(lua_State *L)
 {
 	bool b;
 	int i;
+	int tbl_index;
 	lua_Number n;
 	char *str;
 	void* user;
 	hs_parse_args(L,
 		HS_BOOL, &b,
 		HS_INT, &i,
+		HS_TBL, &tbl_index,
 		HS_NUM, &n,
 		HS_STR, &str,
 		HS_USER, &user,