using Printf

function hfun_pep(args)
  postfix = length(args) < 2 ? "" : '#' * args[2]
  return @sprintf(
    "<a href=https://www.python.org/dev/peps/pep-%04d%s>PEP %s%s</a>",
    Meta.parse(args[1]), postfix, args[1], postfix)
end

function hfun_github(args)
  return @sprintf("<a href=https://github.com/%s>@%s</a>",
                  args[1], args[1])
end

function hfun_pip(args)
  content = length(args) < 2 ? "GH-" * args[1] : args[2]
  return @sprintf("<a href=https://github.com/pypa/pip/pull/%s>%s</a>",
                  args[1], content)
end