==================
empty nix-shell
==================

#!nix-shell
---

(source_file
  (nix_shell_directive))

==================
nix-shell no interpreter
==================

#!nix-shell -p gnused
---

(source_file
  (nix_shell_directive))

==================
minimal nix-shell invocation with interpreter
==================

#!nix-shell -i bash
---

(source_file
  (nix_shell_directive
    (interpreter)))

==================
whitespace in nix-shell
==================

#! nix-shell -i bash
---

(source_file
  (nix_shell_directive
    (interpreter)))

==================
non-interpreter argument
==================

#!nix-shell -i bash -p gnused
---

(source_file
  (nix_shell_directive
    (interpreter)))

==================
non-interpreter flags
==================

#!nix-shell -i bash -p gnused awk
---

(source_file
  (nix_shell_directive
    (interpreter)))

==================
quoted arguments
==================

#!nix-shell -i bash arg\ one 'arg"Two' "'argThree"
---

(source_file
  (nix_shell_directive
    (interpreter)))

==================
order-independent
==================

#!nix-shell -p gnused -i bash
---

(source_file
  (nix_shell_directive
    (interpreter)))