func WithDelims(open, close string) Option {
	return func(o *Options) {
		o.delimOpen = open
		o.delimClose = close
	}
}
func WithDelims(open, close string) Option {
	return func(o *Options) {
		o.delimOpen = open
		o.delimClose = close
	}
}
// WithDelims sets the delimiters used in templates.