diff --git a/tokenize.js b/tokenize.js
index 7775a15..c522acd 100755
--- a/tokenize.js
+++ b/tokenize.js
@@ -1,5 +1,6 @@
 #!  /usr/bin/node
 
+var fs = require("fs");
 var rep = require("./representation.js");
 var $ = require("./tools.js");
 var error = require("./errors.js");
@@ -408,8 +409,11 @@ function checkPattern(x, i) {
 }
 
 function tokenizeFull(input) {
+  var preludeSrc = fs.readFileSync("./prelude.jl");
   var matchop;
   var initialPass = tokenizeHelp(input, _.constant(false), true).reverse();
+
+  input = [preludeSrc, input].join("");
   for (var i = 0; i < initialPass.length; i++) {
     if (initialPass.slice(i, i+8).
         map(_.first).