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    <font face="Comic Sans MS">Hi David,<br>
      <br>
      After installing Code2001 and defining it as the font for the
      editor, I can see the expected characters in the editor and the
      pdf.<br>
    </font><br>
    <font face="Comic Sans MS">I am using version 0.5
      (official)(r.dec380b, 24/03/2015) not from MikTeX nor TeX Live.<br>
      <br>
      Regards,<br>
      <br>
      Alain<br>
      <br>
    </font>
    <div class="moz-cite-prefix">Le 26/09/2015 19:14, David J. Perry a
      écrit :<br>
    </div>
    <blockquote cite="mid:5606D288.4080504@verizon.net" type="cite">
      <meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
      <div class="moz-cite-prefix">Alain,<br>
        <br>
        Here is a minimal example.  The issue is not whether this
        compiles, but the difference between what you see in the editor
        and what is in the PDF output.  See the screen shot attached. 
        Of course you have to use a font in TeXworks that contains Plane
        1 characters in order to see them; I use Code2001, which is
        freely available, in both the editing window and output.<br>
        <br>
        % !TEX TS-program = xelatex
        <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
          margin-right:0px; -qt-block-indent:0; text-indent:0px;">% !TEX
          encoding = UTF-8</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;">\documentclass[12pt]{article}</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;">\usepackage{fontspec}

        </p>
        <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
          margin-right:0px; -qt-block-indent:0; text-indent:0px;">\usepackage{xunicode}

        </p>
        <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
          margin-right:0px; -qt-block-indent:0; text-indent:0px;">\usepackage{xltxtra}

        </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;">\setmainfont{Code2001}

        </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;">\begin{document}</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;">This
          file displays characters from Plane 1 of Unicode, used for
          historic scripts. I am using Code2001 for both the editing
          screen and the PDF output.\\</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;">\noindent

          On the line below, we should see some Old Italic characters</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;">𐌀𐌆𐌇𐌈𐌒𐌔𐌕𐌚\\</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;">\noindent

          On the next line are some Gothic letters:</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;">𐌰𐌱𐌲𐌳𐌴𐌵𐌶𐌷𐌸𐌹𐌺\\</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;">\noindent

          And finally some Cuneiform text:</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;">𐎀𐎁𐎂𐎃𐎄𐎅𐎆𐎇𐎈𐎉</p>
        <p style=" margin-top:0px; margin-bottom:0px; margin-left:0px;
          margin-right:0px; -qt-block-indent:0; text-indent:0px;">\end{document}<br>
          <br>
        </p>
        8:52 AM, Alain Delmotte wrote:<br>
      </div>
      <blockquote cite="mid:56054393.6050709@yahoo.fr" type="cite">
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        <font face="Comic Sans MS">Could you provide an complete minimal
          example reproducing the problem? So I could test.<br>
          Thanks,<br>
          <br>
          Alain</font><br>
      </blockquote>
    </blockquote>
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