Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx> writes: >> Not necessarily worth a re-roll. > > Not that it matters in this case, but just as a bit of Perl rx pedantry, > yes his is tighter & more correct. You didn't consider how "." interacts > with newlines: > > $ perl -wE 'my @rx = (qr/^--./, qr/^--.+$/, qr/^--./m, qr/^--.+$/m, qr/^--./s, qr/^--.+$/s); for (@rx) { my $s = "--foo\n--bar"; say $_, "\t", ($s =~ $_ ? 1 : 0) }' > (?^u:^--.) 1 > (?^u:^--.+$) 0 > (?^um:^--.) 1 > (?^um:^--.+$) 1 > (?^us:^--.) 1 > (?^us:^--.+$) 1 > > I don't think it matters here, not like someone will pass \n in options > to aggregate.perl... Hmph, do we want the command not to barf when "--foo\n--bar" is given from the command line and we cannot find such an option? I thought that the location the match under discussion is used does want to see a hit with any option looking string that begins with double dashes. I would have expected "tigher and hence incorrect", in other words. Somewhat puzzled...