diff --git a/smop/main.py b/smop/main.py
index ff5f9c4e..6f328d5e 100644
--- a/smop/main.py
+++ b/smop/main.py
@@ -36,7 +36,7 @@ def main():
         fp = open(options.output, "w")
 
     print >> fp, "# Autogenerated with SMOP " + version.__version__
-    print >> fp, "from __future__ import division"
+    #print >> fp, "from __future__ import division"
     print >> fp, "from smop.core import *"
     if options.link:
         print >> fp, "from %s import *" % options.link
diff --git a/smop/parse.py b/smop/parse.py
index a139553e..78e19380 100644
--- a/smop/parse.py
+++ b/smop/parse.py
@@ -124,34 +124,6 @@ def p_args(p):
         p[0] = p[1]
         p[0].append(p[2])
 
-
-@exceptions
-def p_args_opt(p):
-    """
-    args_opt :
-             | LPAREN RPAREN
-             | LPAREN expr_list RPAREN
-    """
-    flag = False
-    if len(p) == 1:
-        p[0] = node.expr_list()
-    elif len(p) == 3:
-        p[0] = node.expr_list()
-    elif len(p) == 4:
-        assert isinstance(p[2],node.expr_list)
-        p[0] = p[2]
-        flag = True
-    else:
-        assert 0
-
-    if flag:
-        t = p[2][-1]
-        if isinstance(t,node.ident) and t.name=="varargin":
-            t.name = "*varargin"
-        for t in p[2]:
-            if isinstance(t,node.ident) and t.name != '*varargin':
-               t.init = node.ident("None")
-
 
 @exceptions
 def p_break_stmt(p):
@@ -454,10 +426,14 @@ def p_expr_ident(p):
 @exceptions
 def p_ident_init_opt(p):
     """
-    ident_init_opt : ident
+    ident_init_opt : NEG
+                   | ident
                    | ident EQ expr
     """
-    p[0] = p[1]
+    if p[1] == '~':
+        p[0] = node.ident("__")
+    else:
+        p[0] = p[1]
     if len(p) == 2:
         p[0].init = node.ident(name="None") if p[0].name != "varargin" else ""
     else:
diff --git a/smop/version.py b/smop/version.py
index 4a753b0b..86244fa9 100644
--- a/smop/version.py
+++ b/smop/version.py
@@ -1 +1 @@
-__version__ = '0.28'
+__version__ = '0.29'