Example:
if ("ook" =~ /(o*)/) {
- # `paren' will be `1' and `value' will be `ee'
+ # 'paren' will be '1' and 'value' will be 'ee'
$1 =~ tr/o/e/;
}
is currently only used internally by perl's engine for but might be
used in the future for all engines for optimisations.
-=head2 C<nparens>, C<lasparen>, and C<lastcloseparen>
+=head2 C<nparens>, C<lastparen>, and C<lastcloseparen>
These fields are used to keep track of how many paren groups could be matched
in the pattern, which was the last open paren to be entered, and which was