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              do_fork: T
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            (command.AndOr
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                  more_env: []
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                  redirects: []
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                  middle: <Id.Right_CasePat _>
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                      more_env: []
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                            left_token: <Id.Left_DollarParen '$('>
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                                    blame_tok: <xrandr>
                                    more_env: []
                                    words: [{<xrandr>} {<--query>}]
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                                    blame_tok: <sed>
                                    more_env: []
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                                      {<-n>}
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                                        loc: (redir_loc.Fd fd:2)
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                      redirects: []
                      do_fork: T
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                                  {
                                    (CommandSub
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                                        (command.Simple
                                          blame_tok: <compgen>
                                          more_env: []
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                                            {<-W>}
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                                          redirects: []
                                          do_fork: T
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                        )
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                (CaseArm
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                                          right: 
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                      else_action: []
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                      redirects: []
                    )
                    (command.ShAssignment
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                              (ShArrayLiteral
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                                  {
                                    (CommandSub
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                                          more_env: []
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                                          redirects: []
                                          do_fork: T
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                                ]
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                        )
                      ]
                      redirects: []
                    )
                    (command.Simple
                      blame_tok: <compopt>
                      more_env: []
                      words: [{<compopt>} {<-o>} {<nospace>}]
                      redirects: []
                      do_fork: T
                    )
                    (command.ControlFlow keyword:<Id.ControlFlow_Return return>)
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                  right: <Id.Op_DSemi _>
                )
                (CaseArm
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                  pattern: (pat.Words words:[{<-display>}])
                  middle: <Id.Right_CasePat _>
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                      arms: [
                        (IfArm
                          keyword: <Id.KW_If if>
                          cond: 
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                                      left: <Id.KW_DLeftBracket '[['>
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                                              op_id: Id.BoolBinary_GlobDEqual
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                                          right: 
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                                                  <Id.Lit_Other '*'>
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                              do_fork: T
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                                                        (BracedVarSub
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