sub reform {
  my $line = shift;
  my @toret;

  foreach my $word (split(/\b/,$line)) {
    if (lc($word) eq 'mrs') { $word = "Mrs."; }
    elsif (length($word) > 2) {
      $word =~ s/^(.)(.*)/uc($1).lc($2)/se;
    }
    elsif (lc($word) eq 'mr') { $word = "Mr."; }
    push (@toret, $word);
  }

  return join("",@toret);
}

##</code><code>##

adrade@antigone:~$ perl -e 'print ucfirst("il"),"\n"'
Il
adrade@antigone:~$ perl -e 'print ucfirst("HELLO"),"\n"'
HELLO
adrade@antigone:~$ perl -e 'print ucfirst("mrs"),"\n"'
Mrs

# I put reform() in ref.pm

adrade@antigone:~$ perl -e 'use ref; print reform("il"),"\n"'
il
adrade@antigone:~$ perl -e 'use ref; print reform("HELLO"),"\n"'
Hello
adrade@antigone:~$ perl -e 'use ref; print reform("Mrs"),"\n"'
Mrs.