Synchronet Javascript: Preparing a command with double quotes for system.exec() for use on Windows

// By default, this assumes use of the 'convert' program from ImageMagick.
// See if the conversion command uses magick. If so, don't use the
// -coalesce option.
if (gMainCfgObj.PathToImgToSixelConv.toUpperCase().indexOf("MAGICK") > -1)
    cmd = format("\"%s\" \"%s\" %s \"%s\"", gMainCfgObj.PathToImgToSixelConv, pSrcImgFilename, pScale ? ("-resize " + maxWidth + "x" + maxHeight + " ") : "", pDestImgFilename);
else
    cmd = format("\"%s\" -coalesce \"%s\" %s \"%s\"", gMainCfgObj.PathToImgToSixelConv, pSrcImgFilename, pScale ? ("-resize " + maxWidth + "x" + maxHeight + " ") : "", pDestImgFilename);
// If running on Windows, it seems we need an additional set of double-quotes around the whole command line
if (/^WIN/.test(system.platform.toUpperCase()))
    cmd = format("\"%s\"", cmd);