code: func (r *Reader) skip(delim rune) error {
  	for {
  		r1, err := r.readRune()
  		if err != nil {
  			return err
  		}
  		if r1 == delim {
  			return nil
  		}
  	}
  }
docs: // skip reads runes up to and including the rune delim or until error.