Message-Id: <
2AF110D6-9183-47C5-BBBA-26C3FB97C3D3@free.fr>
p4raw-id: //depot/perl@32805
< # match an opening angle bracket
(?: # match one of:
(?> # don't backtrack over the inside of this group
- [^<>]+ # one or more non angle brackets
+ [^<>]+ # one or more non angle brackets
) # end non backtracking group
| # ... or ...
(?1) # recurse to bracket 1 and try it again
use feature 'state';
or by using the C<-E> command-line switch in one-liners.
-See L<perlsub/"Persistent variables via state()">.
+See L<perlsub/"Persistent Private Variables">.
=head2 Stacked filetest operators
=over 4
-=item o
+=item *
a subroutine or method call
-=item o
+=item *
a regular expression match, i.e. C</REGEX/> or C<$foo =~ /REGEX/>,
or a negated regular expression match C<$foo !~ /REGEX/>.
-=item o
+=item *
a comparison such as C<$_ E<lt> 10> or C<$x eq "abc">
(or of course C<$_ ~~ $c>)
-=item o
+=item *
C<defined(...)>, C<exists(...)>, or C<eof(...)>
-=item o
+=item *
A negated expression C<!(...)> or C<not (...)>, or a logical
exclusive-or C<(...) xor (...)>.