[`http://www.ei.ruhr-uni-bochum.de/media/crypto/veroeffentlichungen/2010/08/08/baileypaaroefjc.pdf`](http://www.ei.ruhr-uni-bochum.de/media/crypto/veroeffentlichungen/2010/08/08/baileypaaroefjc.pdf) is severely mis-rendered by the version of pdf.js bundled with Firefox 38.0.5:

![screen shot of misrendered PDF using pdf.js](https://cloud.githubusercontent.com/assets/325899/8235479/3876046e-15b0-11e5-97c0-ecbb5d9f8ee8.png)

You can see that practically every word has some blanks where letters should be.

Note that Adobe Reader (11.0.09) does a _better_ job of rendering but still has many missing characters, and throws up an error message about a font that it "cannot extract", so the PDF itself may be ill-formed (in which case pdf.js should give an error message too).

![screen shot of the same PDF with Adobe Reader 11.0.09](https://cloud.githubusercontent.com/assets/325899/8235615/da33e866-15b0-11e5-96a2-8b9f15c6f74d.png)

charset.push(cid ? id : strings.get(id));
          }
          break;
        case 1:
          while (charset.length <= length) {
            id = (bytes[pos++] << 8) | bytes[pos++];
            count = bytes[pos++];
            for (i = 0; i <= count; i++) {
              charset.push(cid ? id++ : strings.get(id++));
            }
          }
          break;
        case 2:
          while (charset.length <= length) {
            id = (bytes[pos++] << 8) | bytes[pos++];
            count = (bytes[pos++] << 8) | bytes[pos++];
            for (i = 0; i <= count; i++) {
              charset.push(cid ? id++ : strings.get(id++));
            }
          }
          break;
        default:
          throw new FormatError("Unknown charset format");
      }
      
      const end = pos;
      const raw = bytes.subarray(start, end);
      return new CFFCharset(false, format, charset, raw);
    }
    parseEncoding(pos, properties, strings, charset) {