$dir = "\"Test Directory\"";
mkdir ($dir) or die "$!\n$^E";
__END__
Invalid argument
The filename, directory name, or volume label syntax is incorrect at - line 2.

##</code><code>##

C:\> perl -le"print for @ARGV" "i got spaces and I end up in $ARGV[0]" me too
i got spaces and I end up in $ARGV[0]
me
too