less []string
	op   string // Either "<" or "!<"
	def  []string
}

type syntaxError string

func (e syntaxError) Error() string {
	return string(e)
}

// parseRules parses the rules of a DAG.
func parseRules(rules string) (out []rule, err error) {
	defer func() {
		e := recover()
		switch e := e.(type) {
		case nil:
			return
		case syntaxError:
			err = e
		default:
			panic(e)

// the last one mentioned will be the one that results.
// For instance, ParseFiles("a/foo", "b/foo") stores "b/foo" as the template
// named "foo", while "a/foo" is unavailable.
func ParseFiles(filenames ...string) (*Template, error) {
	return parseFiles(nil, readFileOS, filenames...)
}

// ParseFiles parses the named files and associates the resulting templates with

	for _, v := range t.tmpl {
		m = append(m, v)
	}
	return m
}

// Delims sets the action delimiters to the specified strings, to be used in
// subsequent calls to [Template.Parse], [Template.ParseFiles], or [Template.ParseGlob]. Nested template
// definitions will inherit the settings. An empty delimiter stands for the
// corresponding default: {{ or }}.
// The return value is the template, so calls can be chained.