While trying to configure Doxygen to run a file filter that works on both Windows and Linux, there doesn't seem to be a way to quote the path to the command.

FILTER_PATTERNS        = *.glsl=""scripts/runpython" scripts/doxygen-glslfilter.py"

The scripts/runpython needs to be quoted on Windows to allowing the forward slash.

However, the quotes seem to be stripped away.  The command ends up with a 

Executing popen(` scripts/runpython scripts/doxygen-glslfilter.py "C:/dev/g3d/G3D10/data-files/shader/AlphaFilter.glsl"`)

The function getFileFilter() in util.cpp seems to only remove the surrounding quotes, so we were hoping the quotes around the path would stay.

    /* remove surrounding double quotes */
    if ((filterName.right(1) == "\"") && (filterName.left(1) == "\""))
    {
       filterName.remove(filterName.length() - 1, 1);
       filterName.remove(0, 1);
    }


The call to popen in readCodeFragement() in definition.cpp does not seem to add this space or remove other quotes.

    QCString cmd=filter+" \""+fileName+"\"";
    Debug::print(Debug::ExtCmd,0,"Executing popen(`%s`)\n",qPrint(cmd));
    f = portable_popen(cmd,"r");

Would it be possible to allow specifying a quoted path/command?

Without this, there doesn't seem to be a way to run a script on both Windows and Linux from the file filter.