Also:

>perl -wMstrict -
"my $str = 'here a matchme there a matchmoe too';
 ;;
 if (my @matches = $str =~ m{ (matchmo?e) }xmsg) {
   print qq{matched @matches};
   }
"
matched matchme matchmoe
[download]

BTW: I assume you're aware that the regex in the OP matches things like '999.999.999...'.