From 482282178c952660a8441ec6264062fc569cd11d Mon Sep 17 00:00:00 2001
From: Guillermo Vaya <guivaya@gmail.com>
Date: Wed, 26 Jun 2013 02:20:15 +0200
Subject: [PATCH] changed macro to ignore empty trees and made compiler do the
 substitution work

---
 hy/compiler.py | 2 ++
 hy/macros.py   | 5 +----
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/hy/compiler.py b/hy/compiler.py
index 4aa8365..d92ede3 100644
--- a/hy/compiler.py
+++ b/hy/compiler.py
@@ -1421,6 +1421,8 @@ class HyASTCompiler(object):
 
     @builds(HyExpression)
     def compile_expression(self, expression):
+        if expression == []:
+            return self.compile_list(expression)
         fn = expression[0]
         func = None
         if isinstance(fn, HyKeyword):
diff --git a/hy/macros.py b/hy/macros.py
index dab960a..b824cea 100644
--- a/hy/macros.py
+++ b/hy/macros.py
@@ -71,10 +71,7 @@ _wrappers = {
 def process(tree, module_name):
     if isinstance(tree, HyExpression):
         if tree == []:
-            # set value to []
-            ntree = HyList()
-            ntree.replace(tree)
-            return ntree
+            return tree
         
         fn = tree[0]
         if fn in ("quote", "quasiquote"):