title: pdf2HtmlEX - Text on html is different than the source pdf
body: <p>I am using to <code>pdf2htmlEX</code> in order to convert pdf files to html. I also extract the text from the file afterwards.</p>
  <p><strong>The Problem:</strong></p>
  <p>I encountered with a file that the text at the converted html is unreadable:
  <a href="https://dspace.mit.edu/openaccess-disseminate/1721.1/101159" rel="nofollow noreferrer">https://dspace.mit.edu/openaccess-disseminate/1721.1/101159</a></p>
  <p>The command i use:</p>
  <pre><code>pdf2htmlEX --tounicode 1 ./file.pdf
  </code></pre>
  <p>The text on the html has many spaces and many quotes -
  <a href="https://i.stack.imgur.com/khE3P.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/khE3P.png" alt="enter image description here" /></a></p>
  <blockquote>
  <p>[2]&quot;M.&quot;Ha h n ,&quot;O .&quot;B ar bie ri,&quot;F.P .&quot;C
  a m p a na ,&quot;R .&quot;K öt z,&quot;R .&quot;G alla y,&quot;A p p
  l.&quot;Ph ys .&quot;A :&quot;M a te r.&quot;S ci.&quot;P ro ce
  ss.&quot;8 2 &quot;(2 00 6 )&quot;</p>
  </blockquote>
  <p>Setting other values for the <code>--tounicode</code> arg make the text is gibberish.</p>
  <p>There is an online tool that uses this library and the html produced there is just fine, which makes it not a pdf2htmlEX bug but a configuration or versions problem. May be something related to poppler or fontforge.</p>
  <p><strong>Versions:</strong></p>
  <pre><code>pdf2htmlEX version 0.14.6
  Copyright 2012-2015 Lu Wang &lt;coolwanglu@gmail.com&gt; and other contributors
  Libraries: 
    poppler 0.54.0
    libfontforge 20180906
    cairo 1.14.6
  Default data-dir: /usr/local/share/pdf2htmlEX
  Supported image format: png jpg svg
  </code></pre>
  <p>Tried also using the new repository that sustain this project and getting the same results, see issue:
  <a href="https://github.com/pdf2htmlEX/pdf2htmlEX/issues/92" rel="nofollow noreferrer">https://github.com/pdf2htmlEX/pdf2htmlEX/issues/92</a></p>
  <p>For your knowledge, pdf2htmlEX uses wide range of characters as spaces such as &quot; ' ( ) +. So replacing them all is not an option.</p>
  <p>Any way to make pdf2htmlEX not using these characters?</p>