Sure - you are of course correct. However like you I am almost positive the poster has no idea how that RE will behave, vis:

@res = 'IS~THISOK?' =~ m/\s*(\S+)\s*(\S+)\s*(\S+)\s*(\S+)\s*/;
print "@res\n";
__DATA__
IS~THIS O K ?
[download]

cheers

tachyon

s&&rsenoyhcatreve&&&s&n.+t&"$'$`$\"$\&"&ee&&y&srve&&d&&print