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    <div class="moz-cite-prefix">No problems here, Carlos, using XeTeX
      rather than XeLaTeX <br>
      <br>
      <blockquote type="cite">\font \Jost = "Jost*"
        <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
          margin-right:0px; -qt-block-indent:0; text-indent:0px;
          line-height:100%;">\Jost Hallo</p>
        <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
          margin-right:0px; -qt-block-indent:0; text-indent:0px;
          line-height:100%;">\end</p>
      </blockquote>
      <br>
      <blockquote type="cite">This is XeTeX, Version
        3.14159265-2.6-0.999992 (TeX Live 2020/W32TeX) (preloaded
        format=xetex)
        <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
          margin-right:0px; -qt-block-indent:0; text-indent:0px;">
          \write18 enabled.</p>
        <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
          margin-right:0px; -qt-block-indent:0; text-indent:0px;">entering
          extended mode</p>
        <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
          margin-right:0px; -qt-block-indent:0; text-indent:0px;">(./untitled-1.tex
          [1] )</p>
        <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
          margin-right:0px; -qt-block-indent:0; text-indent:0px;">Output
          written on untitled-1.pdf (1 page).</p>
        <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
          margin-right:0px; -qt-block-indent:0; text-indent:0px;">SyncTeX
          written on untitled-1.synctex.gz.</p>
        <p style="-qt-paragraph-type:empty; margin-top:0px;
          margin-bottom:0px; margin-left:0px; margin-right:0px;
          -qt-block-indent:0; text-indent:0px;"><br>
        </p>
        <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
          margin-right:0px; -qt-block-indent:0; text-indent:0px;">Transcript
          written on untitled-1.log.</p>
      </blockquote>
      <br>
      It may therefore be that the problem lies with "fontspec" or with
      the XeLaTeX format.<br>
      <i>Philip Taylor</i><br>
      --------<br>
      Carlos Franke wrote:<br>
    </div>
    <blockquote type="cite"
      cite="mid:ee4c2626aa0e2fecf3c250b3eba1c3ebc360e6b8.camel@posteo.de">
      <pre wrap="">Hello!

I'm having trouble using the typeface Jost* [0] [1] with xelatex. 
</pre>
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