Use unicode mapping cmap when simple identity cmap was originally used

src/fonts.js

@@ -1758,7 +1758,7 @@ var Font = (function Font() {
         var hasShortCmap = !!cmapTable.hasShortCmap;
         var toUnicode = this.toUnicode;
 
-        if (hasShortCmap && toUnicode) {
+        if (toUnicode) {
           // checking if cmap is just identity map
           var isIdentity = true;
           for (var i = 0, ii = glyphs.length; i < ii; i++) {
@@ -2110,6 +2110,10 @@ var Font = (function Font() {
           unicode = charcode;
           break;
         case 'TrueType':
+          if (this.useToUnicode) {
+            unicode = this.toUnicode[charcode] || charcode;
+            break;
+          }
           var glyphName = this.differences[charcode] || this.encoding[charcode];
           if (!glyphName)
             glyphName = Encodings.StandardEncoding[charcode];

test/pdfs/tutorial.pdf.link

@@ -0,0 +1 @@
+http://cplusplus.com/files/tutorial.pdf

test/test_manifest.json

@@ -296,5 +296,12 @@
        "md5": "20d88011dd7e3c4fb5274979094dab93",
        "rounds": 1,
        "type": "eq"
+    },
+    {  "id": "tutorial",
+       "file": "pdfs/tutorial.pdf",
+       "md5": "6e122f618c27f3aa9a689423e3be6b8d",
+       "link": true,
+       "rounds": 1,
+       "type": "eq"
     }
 ]