sigil_z.exs

defmodule SigilZ do
  defmacro sigil_z(input, flags) do
    quote do
      [input: unquote(input), flags: unquote(flags)]
    end
  end
end

# then:

import SigilZ
~z(my input data)abc
#=> [input: "my input data", flags: 'abc']
# NB! The flags are a char_list, not a string/binary.