Attach (recommended) or Link to PDF file here:
https://web.archive.org/web/20091223123331/http://sci2s.ugr.es/keel/pdf/specific/articulo/alp99.pdf
(aka `tests/pdfs/issue1936.pdf`)
 
When I copy/paste the multiplication sign on the first line of the first page, I got a `£`.
And when I do the same in evince I got a `×` (the same in chrome).
The font descriptor is:
```
<< /Ascent 0 /CapHeight 749 /CharSet (/multiply) /Descent 0 /Flags 262212 /FontBBox [ -27 -940 1332 825 ] /FontFile3 59 0 R /FontName /KHPEPJ+CMBSY10 /ItalicAngle -14.035 /StemV 0 /Type /FontDescriptor >>
```
So it should be possible to guess the correct character in using the `CharSet` entry:
https://www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/PDF32000_2008.pdf#page=291


accent,
          width,
          vmetric,
          operatorListId,
          isSpace,
          isInFont
        )
      ) {
        glyph = new Glyph(
          fontChar,
          unicode,
          accent,
          width,
          vmetric,
          operatorListId,
          isSpace,
          isInFont
        );
        this.glyphCache[charcode] = glyph;
      }
      return glyph;
    },
    charsToGlyphs: function Font_charsToGlyphs(chars) {
      var charsCache = this.charsCache;
      var glyphs, glyph, charcode;
      
      if (charsCache) {
        glyphs = charsCache[chars];
        if (glyphs) {
          return glyphs;