// combine e.g. "a/b" into one token
// - but not "a / b"
static LS tok_combineSpacelessSlashCombos(LS tok) {
  new LS l;
  for i over tok: {
    if (l(l) > 1 && subListStartingAtIs(tok, i, "", "/", "")
      && i < l(tok)-4) {
      tokAppend(l, l(l)-1, joinSubList(tok, i+1, i+4));
      i += 3;
    } else
      l.add(tok.get(i));
  }
  ret l;
}