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


rangeShift: entrySize * entriesCount - searchRange,
    };
  };
  var OTF_HEADER_SIZE = 12;
  var OTF_TABLE_ENTRY_SIZE = 16;
  OpenTypeFileBuilder.prototype = {
    toArray: function OpenTypeFileBuilder_toArray() {
      var sfnt = this.sfnt;
      
      var tables = this.tables;
      var tablesNames = Object.keys(tables);
      tablesNames.sort();
      var numTables = tablesNames.length;
      var i, j, jj, table, tableName;
      
      var offset = OTF_HEADER_SIZE + numTables * OTF_TABLE_ENTRY_SIZE;
      var tableOffsets = [offset];
      for (i = 0; i < numTables; i++) {
        table = tables[tablesNames[i]];
        var paddedLength = ((table.length + 3) & ~3) >>> 0;
        offset += paddedLength;
        tableOffsets.push(offset);
      }
      var file = new Uint8Array(offset);
      
      for (i = 0; i < numTables; i++) {
        table = tables[tablesNames[i]];
        writeData(file, tableOffsets[i], table);
      }