2 files changed, 10 insertions, 8 deletions
diff --git a/src/nvim/lua/executor.c b/src/nvim/lua/executor.c
index 3c1676581c..18abf04ff6 100644
--- a/src/nvim/lua/executor.c
+++ b/src/nvim/lua/executor.c
@@ -1350,6 +1350,16 @@ Object nlua_exec(const String str, const Array args, Error *err)
   return nlua_pop_Object(lstate, false, err);
 }
 
+bool nlua_ref_is_function(LuaRef ref)
+{
+  lua_State *const lstate = global_lstate;
+  nlua_pushref(lstate, ref);
+  bool is_function = (lua_type(lstate, -1) == LUA_TFUNCTION);
+  lua_pop(lstate, 1);
+
+  return is_function;
+}
+
 /// call a LuaRef as a function (or table with __call metamethod)
 ///
 /// @param ref     the reference to call (not consumed)
diff --git a/src/nvim/lua/executor.h b/src/nvim/lua/executor.h
index 957c61f2f9..47ac51dadb 100644
--- a/src/nvim/lua/executor.h
+++ b/src/nvim/lua/executor.h
@@ -24,14 +24,6 @@ typedef struct {
 #endif
 } nlua_ref_state_t;
 
-#define set_api_error(s, err) \
-  do { \
-    Error *err_ = (err); \
-    err_->type = kErrorTypeException; \
-    err_->set = true; \
-    memcpy(&err_->msg[0], s, sizeof(s)); \
-  } while (0)
-
 #define NLUA_CLEAR_REF(x) \
   do { \
     /* Take the address to avoid double evaluation. #1375 */ \