diff --git a/hy/compiler.py b/hy/compiler.py
index faed069..efe156b 100644
--- a/hy/compiler.py
+++ b/hy/compiler.py
@@ -323,7 +323,6 @@ def checkargs(exact=None, min=None, max=None):
 class HyASTCompiler(object):
 
     def __init__(self):
-        self.returnable = False
         self.anon_fn_count = 0
         self.anon_var_count = 0
         self.imports = defaultdict(set)
diff --git a/hy/core/__init__.py b/hy/core/__init__.py
index 78801e1..cfaa074 100644
--- a/hy/core/__init__.py
+++ b/hy/core/__init__.py
@@ -20,9 +20,6 @@
 
 from hy.macros import process as mprocess
 
-import hy.mangle
-
-
 MACROS = [
     "hy.core.bootstrap",
 ]
@@ -34,8 +31,6 @@ def process(tree):
     while old != tree:
         old = tree
         tree = mprocess(tree)
-        for m in hy.mangle.MANGLES:
-            m().mangle(tree)
     return tree
 
 
diff --git a/hy/mangle.py b/hy/mangle.py
deleted file mode 100644
index 8665e48..0000000
--- a/hy/mangle.py
+++ /dev/null
@@ -1,136 +0,0 @@
-# Copyright (c) 2013 Paul Tagliamonte <paultag@debian.org>
-#
-# Permission is hereby granted, free of charge, to any person obtaining a
-# copy of this software and associated documentation files (the "Software"),
-# to deal in the Software without restriction, including without limitation
-# the rights to use, copy, modify, merge, publish, distribute, sublicense,
-# and/or sell copies of the Software, and to permit persons to whom the
-# Software is furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
-# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-# DEALINGS IN THE SOFTWARE.
-
-import abc
-
-from hy.models.expression import HyExpression
-# from hy.models.list import HyList
-
-MANGLES = []
-
-
-class Mangle(object):
-    """
-    Mangle (n.)
-
-        1. To mutilate or disfigure by battering, hacking, cutting,
-           or tearing. See Synonyms at batter1.
-
-        (but mostly hacking)
-    """
-
-    __metaclass___ = abc.ABCMeta
-
-    class TreeChanged(Exception):
-        """
-        This exception gets raised whenver any code alters the tree. This is
-        to let the handling code re-normalize parents, etc, and make sure we
-        re-enter the current position in order.
-        """
-        pass
-
-    @abc.abstractmethod
-    def visit(self, element):
-        raise NotImplementedError
-
-    def _mangle(self, tree):
-        """
-        Main function of self.mangle, which is called over and over. This
-        is used to beat the tree until it stops moving.
-        """
-
-        scoped = False
-        self.push_stack(tree)
-
-        if isinstance(tree, HyExpression):
-            # If it's an expression, let's make sure we reset the "scope"
-            # (code branch) if it's a scopable object.
-            what = tree[0]
-            if what in ["fn", "if"]:
-                self.push_scope(tree)
-                scoped = True
-
-        if isinstance(tree, list):
-            # If it's a list, let's mangle all the elements of the list.
-            for i, element in enumerate(tree):
-                nel = self.visit(element)
-                if nel:
-                    # if the subclass returned an object, we replace the
-                    # current node.
-                    tree[i] = nel
-                    self.tree_changed()  # auto-raise a changed notice.
-                self._mangle(element)  # recurse down, unwind on change.
-
-        if scoped:
-            self.pop_scope()
-        self.pop_stack()
-
-    def hoist(self, what):
-        """
-        Take a thing (what), and move it before whichever ancestor is in the
-        "scope" (code branch). This will hoist it *all* the way out of a deeply
-        nested statement in one pass. If it's still "invalid" (which it
-        shouldn't be), it'll just hoist again anyway.
-        """
-        scope = self.scope
-        for point, el in enumerate(scope):
-            if el in self.stack:
-                break
-        self.scope.insert(point, what)
-
-    def get_scope(self):
-        return self.scopes[0]
-
-    def tree_changed(self):
-        """ Invoke this if you alter the tree in any way """
-        raise self.TreeChanged()
-
-    @property
-    def scope(self):
-        return self.get_scope()
-
-    def push_scope(self, tree):
-        self.scopes.insert(0, tree)
-
-    def push_stack(self, tree):
-        self.stack.insert(0, tree)
-
-    def pop_scope(self):
-        return self.scopes.pop(0)
-
-    def pop_stack(self):
-        return self.stack.pop(0)
-
-    def mangle(self, tree):
-        """Magic external entry point.
-
-        We mangle until the tree stops moving, i.e. until we don't get a
-        TreeChanged Exception during mangle.
-
-        """
-        while True:
-            self.scopes = []
-            self.stack = []
-            self.push_scope(tree)
-            try:
-                self._mangle(tree)
-                break
-            except self.TreeChanged:
-                pass