=========================================
Empty bracket argument [bracket_argument]
=========================================

message([[]])

---

(source_file
  (normal_command
    (identifier)
    (argument_list
      (argument
        (bracket_argument
          (bracket_argument_open)
          (bracket_argument_content)
          (bracket_argument_close))))))

=======================================
One bracket argument [bracket_argument]
=======================================

message([[an argument]])

---

(source_file
  (normal_command
    (identifier)
    (argument_list
      (argument
        (bracket_argument
          (bracket_argument_open)
          (bracket_argument_content)
          (bracket_argument_close))))))

========================================
Two bracket arguments [bracket_argument]
========================================

message([[first argument]] [[second argument]])

---

(source_file
  (normal_command
    (identifier)
    (argument_list
      (argument
        (bracket_argument
          (bracket_argument_open)
          (bracket_argument_content)
          (bracket_argument_close)))
      (argument
        (bracket_argument
          (bracket_argument_open)
          (bracket_argument_content)
          (bracket_argument_close))))))

========================================================
Two bracket with two equals arguments [bracket_argument]
========================================================

message(
  [====[first argument]====]
  [====[second argument]====]
)

---

(source_file
  (normal_command
    (identifier)
    (argument_list
      (argument
        (bracket_argument
          (bracket_argument_open)
          (bracket_argument_content)
          (bracket_argument_close)))
      (argument
        (bracket_argument
          (bracket_argument_open)
          (bracket_argument_content)
          (bracket_argument_close))))))

===================================================
Bracket argument with line break [bracket_argument]
===================================================

message([[an argument
with line break
]])

---

(source_file
  (normal_command
    (identifier)
    (argument_list
      (argument
        (bracket_argument
          (bracket_argument_open)
          (bracket_argument_content)
          (bracket_argument_close))))))

=====================================================================================
Bracket argument with embedded brackets and equal signs line break [bracket_argument]
=====================================================================================

message([===[an argument
with line break ]==]
]===])

---

(source_file
  (normal_command
    (identifier)
    (argument_list
      (argument
        (bracket_argument
          (bracket_argument_open)
          (bracket_argument_content)
          (bracket_argument_close))))))
