From e5732f489d27f40b125714f88d2a8279dbcddd32 Mon Sep 17 00:00:00 2001
From: Brendan Dahl <brendan.dahl@gmail.com>
Date: Wed, 18 Apr 2012 09:48:28 -0700
Subject: [PATCH] Handle junk at the end of postscript functions.

---
 src/function.js            | 5 ++++-
 test/unit/function_spec.js | 6 ++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/function.js b/src/function.js
index 2e7ad45e6..d16805b52 100644
--- a/src/function.js
+++ b/src/function.js
@@ -836,7 +836,10 @@ var PostScriptLexer = (function PostScriptLexerClosure() {
       // operator
       var str = ch.toLowerCase();
       while (true) {
-        ch = stream.lookChar().toLowerCase();
+        ch = stream.lookChar();
+        if (ch === null)
+          break;
+        ch.toLowerCase();
         if (ch >= 'a' && ch <= 'z')
           str += ch;
         else
diff --git a/test/unit/function_spec.js b/test/unit/function_spec.js
index 2a1dc0b75..94240c47d 100644
--- a/test/unit/function_spec.js
+++ b/test/unit/function_spec.js
@@ -77,6 +77,12 @@ describe('function', function() {
       expect(function() { parse('{'); }).toThrow(
                   new Error('Unexpected symbol: found undefined expected 1.'));
     });
+    it('handles junk after the end', function() {
+      var number = 3.3;
+      var program = parse('{ ' + number + ' }#');
+      var expectedProgram = [number];
+      expect(program).toMatchArray(expectedProgram);
+    });
   });
 
   describe('PostScriptEvaluator', function() {