module ActionView::LookupContext::ViewPaths

def normalize_name(name, prefixes)
  name = name.to_s
  idx = name.rindex("/")
  return name, prefixes.presence || [""] unless idx
  path_prefix = name[0, idx]
  path_prefix = path_prefix.from(1) if path_prefix.start_with?("/")
  name = name.from(idx + 1)
  if !prefixes || prefixes.empty?
    prefixes = [path_prefix]
  else
    prefixes = prefixes.map { |p| "#{p}/#{path_prefix}" }
  end
  return name, prefixes
end