Exporting to PNG, Spaces becomes Hyphen?

Question

Hello!
I have this beautiful function that export layers and stuf to PNG-files. It works great exept one thing. If i spaces in the filename it will convert the spaces to hyphen!
For example. If i am working with C:\users\Clint\Clint Eastwood is so beautiful.ai. The script puts a file named Clint-Eastwood-is-so-beautiful.png in the folder C:\users\Clint.
Why oh why the Hyphens?? I dont want them
Any one have a good idea?
fullPath= app.activeDocument.fullName.parent;
docName = app.activeDocument.name.match(/^.*[^.ai]/i);
    exportFileToPNG24(fullPath + "\\" + docName + ".png");
function exportFileToPNG24 (dest) {
          if ( app.documents.length > 0 ) {
          var exportOptions = new ExportOptionsPNG24();
          var type = ExportType.PNG24;
          var fileSpec = new File(dest);
          alert(dest);
          exportOptions.antiAliasing = false;
          exportOptions.transparency = true;
          exportOptions.saveAsHTML = false;
          exportOptions.horizontalScale = 100;
          exportOptions.verticalScale = 100;
          app.activeDocument.exportFile( fileSpec, type, exportOptions );
// Mr Clint

Answer 1

Looks like its part of the export… Tried and it does the same here… The only option is to let it do this then rename the file afterwards… Don't know if it's a bug or indended…
Try this:
#target illustrator
exportPNG24();
function exportPNG24() {
    if ( app.documents.length == 0 ) { return; }
    app.userInteractionLevel = UserInteractionLevel.DONTDISPLAYALERTS;
    var opts = new ExportOptionsPNG24();
    opts.antiAliasing = false;
    opts.transparency = true;
    opts.saveAsHTML = false;
    opts.horizontalScale = 100;
    opts.verticalScale = 100;
    var pngFile = File( app.activeDocument.fullName.toString().replace( /\.ai$/i, '.png' ) );
    app.activeDocument.exportFile( pngFile, ExportType.PNG24 ,opts );
    var autoFile = File( pngFile.fsName.replace( /\s/g,  '-' ) );
    if ( autoFile.exists ) {
        $.writeln( 'yup' );
        autoFile.rename(  pngFile.name.replace( '-', ' ' ) );