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      "type": "SYMBOL",
      "name": "_literal"
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    "variable_assignment": {
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        {
          "type": "FIELD",
          "name": "name",
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            "type": "CHOICE",
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              {
                "type": "SYMBOL",
                "name": "variable_name"
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              {
                "type": "SYMBOL",
                "name": "subscript"
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        },
        {
          "type": "CHOICE",
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            {
              "type": "STRING",
              "value": "="
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            {
              "type": "STRING",
              "value": "+="
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        {
          "type": "FIELD",
          "name": "value",
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            "type": "CHOICE",
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              {
                "type": "SYMBOL",
                "name": "_literal"
              },
              {
                "type": "SYMBOL",
                "name": "array"
              },
              {
                "type": "SYMBOL",
                "name": "_empty_value"
              }
            ]
          }
        }
      ]
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      "type": "SEQ",
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        {
          "type": "FIELD",
          "name": "name",
          "content": {
            "type": "SYMBOL",
            "name": "variable_name"
          }
        },
        {
          "type": "STRING",
          "value": "["
        },
        {
          "type": "FIELD",
          "name": "index",
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            "name": "_literal"
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        },
        {
          "type": "CHOICE",
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              "type": "SYMBOL",
              "name": "_concat"
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            {
              "type": "BLANK"
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        {
          "type": "STRING",
          "value": "]"
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        {
          "type": "CHOICE",
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              "type": "SYMBOL",
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            {
              "type": "BLANK"
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          {
            "type": "FIELD",
            "name": "descriptor",
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                  "type": "SYMBOL",
                  "name": "file_descriptor"
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                {
                  "type": "BLANK"
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            "type": "CHOICE",
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                "type": "STRING",
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              {
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                "type": "STRING",
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              {
                "type": "STRING",
                "value": "&>>"
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              {
                "type": "STRING",
                "value": "<&"
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              {
                "type": "STRING",
                "value": ">&"
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              {
                "type": "STRING",
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            "type": "FIELD",
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                  {
                    "type": "SYMBOL",
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                  {
                    "type": "SYMBOL",
                    "name": "command_substitution"
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                  {
                    "type": "SYMBOL",
                    "name": "_heredoc_body_middle"
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            },
            {
              "type": "SYMBOL",
              "name": "_heredoc_body_end"
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                    {
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                    {
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          "type": "SYMBOL",
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        {
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        {
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          "name": "string_expansion"
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        {
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        {
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          "value": ")"
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      "value": "'[^']*'"
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    "ansii_c_string": {
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              "type": "SYMBOL",
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            {
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              "name": "_special_variable_name"
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              "type": "ALIAS",
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                "type": "STRING",
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            {
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            {
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                {
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                        {
                          "type": "SYMBOL",
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                    {
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                              "type": "CHOICE",
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                                  "type": "SYMBOL",
                                  "name": "regex"
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                    {
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                            "type": "STRING",
                            "value": ":-"
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                          {
                            "type": "STRING",
                            "value": "%"
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                            "type": "STRING",
                            "value": "-"
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                            "type": "STRING",
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              "type": "STRING",
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        {
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              "type": "STRING",
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            {
              "type": "SYMBOL",
              "name": "file_redirect"
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            {
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              "value": ")"
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          ]
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          "content": {
            "type": "SEQ",
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                "type": "STRING",
                "value": "`"
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                "type": "SYMBOL",
                "name": "_statements"
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              {
                "type": "STRING",
                "value": "`"
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    "process_substitution": {
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        {
          "type": "CHOICE",
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            {
              "type": "STRING",
              "value": "<("
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            {
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          "name": "_statements"
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          "value": ")"
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    "comment": {
      "type": "TOKEN",
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        "type": "PREC",
        "value": -10,
        "content": {
          "type": "PATTERN",
          "value": "#.*"
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    "_simple_variable_name": {
      "type": "ALIAS",
      "content": {
        "type": "PATTERN",
        "value": "\\w+"
      },
      "named": true,
      "value": "variable_name"
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    "_special_variable_name": {
      "type": "ALIAS",
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        "type": "CHOICE",
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          {
            "type": "STRING",
            "value": "*"
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          {
            "type": "STRING",
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          {
            "type": "STRING",
            "value": "?"
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          {
            "type": "STRING",
            "value": "-"
          },
          {
            "type": "STRING",
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          {
            "type": "STRING",
            "value": "0"
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          {
            "type": "STRING",
            "value": "_"
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        ]
      },
      "named": true,
      "value": "special_variable_name"
    },
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        "type": "REPEAT1",
        "content": {
          "type": "CHOICE",
          "members": [
            {
              "type": "PATTERN",
              "value": "[^'\"<>{}\\[\\]()`$|&;\\\\\\s#]"
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            {
              "type": "SEQ",
              "members": [
                {
                  "type": "STRING",
                  "value": "\\"
                },
                {
                  "type": "PATTERN",
                  "value": "[^\\s]"
                }
              ]
            }
          ]
        }
      }
    },
    "test_operator": {
      "type": "TOKEN",
      "content": {
        "type": "PREC",
        "value": 1,
        "content": {
          "type": "SEQ",
          "members": [
            {
              "type": "STRING",
              "value": "-"
            },
            {
              "type": "PATTERN",
              "value": "[a-zA-Z]+"
            }
          ]
        }
      }
    },
    "_terminator": {
      "type": "CHOICE",
      "members": [
        {
          "type": "STRING",
          "value": ";"
        },
        {
          "type": "STRING",
          "value": ";;"
        },
        {
          "type": "STRING",
          "value": "\n"
        },
        {
          "type": "STRING",
          "value": "&"
        }
      ]
    }
  },
  "extras": [
    {
      "type": "SYMBOL",
      "name": "comment"
    },
    {
      "type": "PATTERN",
      "value": "\\\\?\\s"
    }
  ],
  "conflicts": [],
  "precedences": [],
  "externals": [
    {
      "type": "SYMBOL",
      "name": "heredoc_start"
    },
    {
      "type": "SYMBOL",
      "name": "_simple_heredoc_body"
    },
    {
      "type": "SYMBOL",
      "name": "_heredoc_body_beginning"
    },
    {
      "type": "SYMBOL",
      "name": "_heredoc_body_middle"
    },
    {
      "type": "SYMBOL",
      "name": "_heredoc_body_end"
    },
    {
      "type": "SYMBOL",
      "name": "file_descriptor"
    },
    {
      "type": "SYMBOL",
      "name": "_empty_value"
    },
    {
      "type": "SYMBOL",
      "name": "_concat"
    },
    {
      "type": "SYMBOL",
      "name": "variable_name"
    },
    {
      "type": "SYMBOL",
      "name": "regex"
    },
    {
      "type": "STRING",
      "value": "}"
    },
    {
      "type": "STRING",
      "value": "]"
    },
    {
      "type": "STRING",
      "value": "<<"
    },
    {
      "type": "STRING",
      "value": "<<-"
    },
    {
      "type": "STRING",
      "value": "\n"
    }
  ],
  "inline": [
    "_statement",
    "_terminator",
    "_literal",
    "_statements2",
    "_primary_expression",
    "_simple_variable_name",
    "_special_variable_name"
  ],
  "supertypes": [
    "_statement",
    "_expression",
    "_primary_expression"
  ]
}