=item m?PATTERN?
X<?> X<operator, match-once>
+=item ?PATTERN?
+
This is just like the C<m/PATTERN/> search, except that it matches
only once between calls to the reset() operator. This is a useful
optimization when you want to see only the first occurrence of
For historical reasons, the leading C<m> in C<m?PATTERN?> is optional,
but the resulting C<?PATTERN?> syntax is deprecated, will warn on
usage and may be removed from a future stable release of Perl without
-notice.
+further notice.
=item s/PATTERN/REPLACEMENT/msixpogcer
X<substitute> X<substitution> X<replace> X<regexp, replace>