From 1be8c5e7ed4d61f52c18580c7e8e0939bf5658ac Mon Sep 17 00:00:00 2001
From: Chris Jones <jones.chris.g@gmail.com>
Date: Sat, 18 Jun 2011 21:18:56 -0700
Subject: [PATCH] CharSet is optional

---
 pdf.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/pdf.js b/pdf.js
index 9c4344fab..c0e4791d4 100644
--- a/pdf.js
+++ b/pdf.js
@@ -1912,9 +1912,11 @@ var CanvasGraphics = (function() {
 
                     // Get the font charset if any
                     var charset = descriptor.get("CharSet");
-                    assertWellFormed(IsString(charset), "invalid charset");
+                    if (charset) {
+                        assertWellFormed(IsString(charset), "invalid charset");
 
-                    charset = charset.split("/");
+                        charset = charset.split("/");
+                    }
                 } else if (IsName(encoding)) {
                     var encoding = Encodings[encoding.name];
                     if (!encoding)