[`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)

const stringIndex = new CFFIndex();
    for (let i = 0, ii = strings.length; i < ii; ++i) {
      stringIndex.add(stringToBytes(strings[i]));
    }
    return this.compileIndex(stringIndex);
  }
  compileGlobalSubrIndex() {
    const globalSubrIndex = this.cff.globalSubrIndex;
    this.out.writeByteArray(this.compileIndex(globalSubrIndex));
  }
  compileCharStrings(charStrings) {
    const charStringsIndex = new CFFIndex();
    for (let i = 0; i < charStrings.count; i++) {
      const glyph = charStrings.get(i);
      
      
      if (glyph.length === 0) {
        charStringsIndex.add(new Uint8Array([0x8b, 0x0e]));
        continue;
      }
      charStringsIndex.add(glyph);
    }
    return this.compileIndex(charStringsIndex);
  }
  compileCharset(charset, numGlyphs, strings, isCIDFont) {