From f3f173fcb672d797412f406cae641f4313d8de45 Mon Sep 17 00:00:00 2001
From: Eric Long <i@hack3r.moe>
Date: Thu, 21 Jul 2022 20:54:49 +0800
Subject: [PATCH] `Function::bind`: simply clone the function if `args` are
 empty `MultiValue`

---
 src/function.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/function.rs b/src/function.rs
index bddd0c1..b7a6f23 100644
--- a/src/function.rs
+++ b/src/function.rs
@@ -208,6 +208,10 @@ impl<'lua> Function<'lua> {
         let args = args.to_lua_multi(lua)?;
         let nargs = args.len() as c_int;
 
+        if nargs == 0 {
+            return Ok(self.clone());
+        }
+
         if nargs + 1 > ffi::LUA_MAX_UPVALUES {
             return Err(Error::BindError);
         }