code: func (qp *QueryParserBase) handleBareTokenQuery(qField string,
  	term, fuzzySlop *Token, prefix, wildcard, fuzzy, regexp bool) (q search.Query, err error) {
  
  	var termImage string
  	if termImage, err = qp.discardEscapeChar(term.image); err != nil {
  		return nil, err
  	}
  	if wildcard {
  		panic("not implemented yet")
  	} else if prefix {
  		panic("not implemented yet")
  	} else if regexp {
  		panic("not implemented yet")
  	} else if fuzzy {
  		panic("not implemented yet")
  	} else {
  		return qp.fieldQuery(qField, termImage, false), nil
  	}
  }
docs: // L827