render/template.go
func (s templateRenderer) partialFeeder(name string) (string, error) {
	ct := strings.ToLower(s.contentType)

	d, f := filepath.Split(name)
	name = filepath.Join(d, "_"+f)
	name = fixExtension(name, ct)

	return s.TemplatesBox.FindString(name)
}
func (s templateRenderer) partialFeeder(name string) (string, error) {
	ct := strings.ToLower(s.contentType)

	d, f := filepath.Split(name)
	name = filepath.Join(d, "_"+f)
	name = fixExtension(name, ct)

	return s.TemplatesBox.FindString(name)
}
// partialFeeder returns template string for the name from `TemplateBox`.
// It should be registered as helper named `partialFeeder` so plush can
// find it with the name.