static L<S> jextractAll(S pat, S s) {
  ret jextractAll(pat, javaTok(s));
}

static L<S> jextractAll(S pat, L<S> tok) {
  L<S> tokpat = javaTok(pat);
  jfind_preprocess(tokpat);
  new L<S> l;
  for (int i : jfindAll(tok, tokpat))
    l.add(join(subList(tok, i, i+l(tokpat)-2)));
  ret l;
}