Re: Specifying multiple separators via FS or the -F command line flag - addendum

Here's a sample of how the multiple separators feature behaves:

[15:52:17][gavron@turki:~]$ echo " one: two:three :four five" | awk -F "[: ]" '{print "1 "$1; print "2 "$2; print "3 "$3; print "4 "$4; print "5 "$5; print "6 "$6;print "7 "$7;print "8 "$8}'
1
2 one
3
4 two
5 three
6
7 four
8 five

Doesn't seem very logical to me.  

When awk successfully tests for space or colon, the following characters
are assumed NOT to be separators even if they have been defined as such
via the -F flag -- eg. the <space> that follows "one:" is mapped to the
$3 variable.

Is this the way it's supposed to work?