Yes, of course; "whitespace."

Your list is wrong though. You are missing form-feed ("\f") and you have incorrectly included a vertical tab.

perl -le 'print "\f" =~ /\s/ ? "match" : "no match"'    # form-feed
perl -le 'print chr(11) =~ /\s/ ? "match" : "no match"' # 11 is vertic
+al tab.
[download]

-sauoq
"My two cents aren't worth a dime.";