(command.CommandList
  children: [
    (command.Case
      case_kw: <Id.KW_Case case>
      to_match: 
        (case_arg.Word
          w: {($ Id.VSub_Hyphen -) <Id.Lit_Colon ':'> ($ Id.VSub_DollarName BASH_VERSION)}
        )
      arms_start: <Id.KW_In in>
      arms: [
        (CaseArm
          left: <Id.Lit_Star '*'>
          pattern: 
            (pat.Words
              words: [
                {<Id.Lit_Star '*'> <x> <Id.Lit_Star '*'> <Id.Lit_Colon ':'> <Id.Lit_LBracket '['> 
                  <0123456789> <Id.Lit_RBracket ']'> <Id.Lit_Star '*'>
                }
              ]
            )
          middle: <Id.Right_CasePat _>
          action: [
            (command.Sentence
              child: 
                (command.Simple
                  blame_tok: <Id.Lit_Colon ':'>
                  more_env: []
                  words: [
                    {<Id.Lit_Colon ':'>}
                    {<bash>}
                    {<set>}
                    {<-x>}
                    {<is>}
                    {<broken>}
                    {<Id.Lit_Colon ':'>}
                  ]
                  redirects: []
                  do_fork: T
                )
              terminator: <Id.Op_Semi _>
            )
            (command.Simple
              blame_tok: <set>
              more_env: []
              words: [{<set>} {<Id.Lit_Other '+'> <ex>}]
              redirects: []
              do_fork: T
            )
          ]
          right: <Id.Op_DSemi _>
        )
      ]
      arms_end: <Id.KW_Esac esac>
      redirects: []
    )
    (command.WhileUntil
      keyword: <Id.KW_While while>
      cond: 
        (condition.Shell
          commands: [
            (command.Simple
              blame_tok: <Id.Lit_Colon ':'>
              more_env: []
              words: [{<Id.Lit_Colon ':'>}]
              redirects: []
              do_fork: T
            )
          ]
        )
      body: 
        (command.DoGroup
          left: <Id.KW_Do do>
          children: [
            (command.Case
              case_kw: <Id.KW_Case case>
              to_match: (case_arg.Word w:{($ Id.VSub_Pound '#')})
              arms_start: <Id.KW_In in>
              arms: [
                (CaseArm
                  left: <0>
                  pattern: (pat.Words words:[{<0>}])
                  middle: <Id.Right_CasePat _>
                  action: [(command.ControlFlow keyword:<Id.ControlFlow_Exit exit> arg_word:{<0>})]
                  right: <Id.Op_DSemi _>
                )
              ]
              arms_end: <Id.KW_Esac esac>
              redirects: []
            )
            (command.Case
              case_kw: <Id.KW_Case case>
              to_match: (case_arg.Word w:{($ Id.VSub_Number 1)})
              arms_start: <Id.KW_In in>
              arms: [
                (CaseArm
                  left: <Id.Lit_Star '*'>
                  pattern: 
                    (pat.Words
                      words: [{<Id.Lit_Star '*'> <Id.Lit_Equals '='> <Id.Lit_Star '*'>}]
                    )
                  middle: <Id.Right_CasePat _>
                  action: [
                    (command.Case
                      case_kw: <Id.KW_Case case>
                      to_match: (case_arg.Word w:{($ Id.VSub_DollarName RANDOM)})
                      arms_start: <Id.KW_In in>
                      arms: [
                        (CaseArm
                          left: <Id.VSub_DollarName '$RANDOM'>
                          pattern: (pat.Words words:[{($ Id.VSub_DollarName RANDOM)}])
                          middle: <Id.Right_CasePat _>
                          action: [
                            (command.Simple
                              blame_tok: <Id.Left_Backtick '`'>
                              more_env: []
                              words: [
                                {
                                  (CommandSub
                                    left_token: <Id.Left_Backtick '`'>
                                    child: 
                                      (command.Pipeline
                                        children: [
                                          (command.Simple
                                            blame_tok: <echo>
                                            more_env: []
                                            words: [{<echo>} {($ Id.VSub_Number 1)}]
                                            redirects: []
                                            do_fork: T
                                          )
                                          (command.Simple
                                            blame_tok: <sed>
                                            more_env: []
                                            words: [
                                              {<sed>}
                                              {
                                                (DQ <'s/'> <Id.Lit_BadBackslash '\\'> <'([^=]*'> 
                                                  <Id.Lit_BadBackslash '\\'> <')='> <Id.Lit_BadBackslash '\\'> <'(.*'> <Id.Lit_BadBackslash '\\'> <')/eval '> 
                                                  <Id.Lit_BadBackslash '\\'> <'1=\''> <Id.Lit_BadBackslash '\\'> <'2\'; export '> <Id.Lit_BadBackslash '\\'> <'1/'>
                                                )
                                              }
                                            ]
                                            redirects: []
                                            do_fork: T
                                          )
                                        ]
                                        ops: [<Id.Op_Pipe _>]
                                      )
                                    right: <Id.Backtick_Right '`'>
                                  )
                                }
                              ]
                              redirects: []
                              do_fork: T
                            )
                          ]
                          right: <Id.Op_DSemi _>
                        )
                        (CaseArm
                          left: <Id.Lit_Star '*'>
                          pattern: (pat.Words words:[{<Id.Lit_Star '*'>}])
                          middle: <Id.Right_CasePat _>
                          action: [
                            (command.Simple
                              blame_tok: <export>
                              more_env: []
                              words: [{<export>} {(DQ ($ Id.VSub_Number 1))}]
                              redirects: []
                              do_fork: T
                            )
                          ]
                          right: <Id.Op_DSemi _>
                        )
                      ]
                      arms_end: <Id.KW_Esac esac>
                      redirects: []
                    )
                    (command.Simple
                      blame_tok: <shift>
                      more_env: []
                      words: [{<shift>}]
                      redirects: []
                      do_fork: T
                    )
                  ]
                  right: <Id.Op_DSemi _>
                )
                (CaseArm
                  left: <Id.Lit_Star '*'>
                  pattern: (pat.Words words:[{<Id.Lit_Star '*'>}])
                  middle: <Id.Right_CasePat _>
                  action: [(command.ControlFlow keyword:<Id.ControlFlow_Break break>)]
                  right: <Id.Op_DSemi _>
                )
              ]
              arms_end: <Id.KW_Esac esac>
              redirects: []
            )
          ]
          right: <Id.KW_Done done>
        )
      redirects: []
    )
    (command.Simple
      blame_tok: <Id.Left_DoubleQuote '"'>
      more_env: []
      words: [{(DQ ($ Id.VSub_At '@'))}]
      redirects: []
      do_fork: T
    )
    (command.ControlFlow keyword:<Id.ControlFlow_Exit exit> arg_word:{<0>})
  ]
)