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


segment = segments[segIndex];
            start = segment.start;
            var end = segment.end;
            var delta = segment.delta;
            offsetIndex = segment.offsetIndex;
            for (j = start; j <= end; j++) {
              if (j === 0xffff) {
                continue;
              }
              glyphId = offsetIndex < 0 ? j : offsets[offsetIndex + j - start];
              glyphId = (glyphId + delta) & 0xffff;
              mappings.push({
                charCode: j,
                glyphId,
              });
            }
          }
        } else if (format === 6) {
          
          
          
          
          
          var firstCode = file.getUint16();
          var entryCount = file.getUint16();
          for (j = 0; j < entryCount; j++) {
            glyphId = file.getUint16();
            var charCode = firstCode + j;
            mappings.push({
              charCode,