Question regarding blank in file path

[Bo Peng]

Dear developers,

I remember that under windows, I can open and compile a lyx file
resides in a path with space. I am trying this under Linux and get the
following error: (code cited, exorter.C)

        } else if (!lyxrc.tex_allows_spaces
                   && contains(buffer->filePath(), ' ')) {
                Alert::error(_("File name error"),
                           _("The directory path to the document cannot contain 
spaces."));
                return false;

Why is this necessary If we are copying files to /tmp/lyx....?

Cheers,
Bo