Fix metadata on functions.

- Don't use metadata to store ast, env, params data.
- In Clojure, store metadata on the :meta key of the real metadata.
  This also allows using any datatype as metadata.

1 files changed, 4 insertions, 1 deletions

diff --git a/python/core.py b/python/core.py
index 28d9c5e..5e2ef75 100644
--- a/python/core.py
+++ b/python/core.py
@@ -85,7 +85,10 @@ def mapf(f, lst): return List(map(f, lst))
 
 # Metadata functions
 def with_meta(obj, meta):
-    new_obj = copy.copy(obj)
+    if type(obj) == type(lambda x:x):
+        new_obj = obj.__copy__()
+    else:
+        new_obj = copy.copy(obj)
     new_obj.__meta__ = meta
     return new_obj