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      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'BALLS_LIB='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'BALLS_LIB='> name:BALLS_LIB)
          op: assign_op.Equal
          rhs: 
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                child: 
                  (command.Simple
                    blame_tok: <dirname>
                    more_env: []
                    words: [{<dirname>} {($ Id.VSub_Number 0)}]
                    redirects: []
                    do_fork: T
                  )
                right: <Id.Eof_RParen _>
              ) <'/../lib'>
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        )
      ]
      redirects: []
    )
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      pairs: [
        (AssignPair
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                child: 
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                    more_env: []
                    words: [{<readlink>} {<-f>} {(DQ ($ Id.VSub_DollarName BALLS_LIB))}]
                    redirects: []
                    do_fork: T
                  )
                right: <Id.Eof_RParen _>
              )
            }
        )
      ]
      redirects: []
    )
    (command.CommandList
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              pairs: [
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                  left: <Id.Lit_VarLike 'mode='>
                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'mode='> name:mode)
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              redirects: []
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        )
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          more_env: []
          words: [{<shift>}]
          redirects: []
          do_fork: T
        )
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    )
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                  more_env: []
                  words: [{<getopts>} {(SQ <'e:C:'>)} {<opt>}]
                  redirects: []
                  do_fork: T
                )
              terminator: <Id.Op_Semi _>
            )
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        )
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                  pattern: (pat.Words words:[{<C>}])
                  middle: <Id.Right_CasePat _>
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                      pairs: [
                        (AssignPair
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                          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'BALLS_CONF='> name:BALLS_CONF)
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                      redirects: []
                    )
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                )
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                  pattern: (pat.Words words:[{<e>}])
                  middle: <Id.Right_CasePat _>
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                      pairs: [
                        (AssignPair
                          left: <Id.Lit_VarLike 'BALLS_ENV='>
                          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'BALLS_ENV='> name:BALLS_ENV)
                          op: assign_op.Equal
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                        )
                      ]
                      redirects: []
                    )
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                  right: <Id.Op_DSemi _>
                )
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                      words: [{(word_part.EscapedLiteral token:<Id.Lit_EscapedChar '\\?'> ch:'?')}]
                    )
                  middle: <Id.Right_CasePat _>
                  action: [
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                      more_env: []
                      words: [{<echo>} {(DQ <'Usage: '> ($ Id.VSub_Number 0) <' <mode> [options]'>)}]
                      redirects: []
                      do_fork: T
                    )
                    (command.Simple
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                      more_env: []
                      words: [{<echo>}]
                      redirects: []
                      do_fork: T
                    )
                    (command.Simple
                      blame_tok: <echo>
                      more_env: []
                      words: [{<echo>} {(SQ <'Options:'>)}]
                      redirects: []
                      do_fork: T
                    )
                    (command.Simple
                      blame_tok: <echo>
                      more_env: []
                      words: [{<echo>} {(SQ <'  -e <env>   the server environment, BALLS_ENV'>)}]
                      redirects: []
                      do_fork: T
                    )
                    (command.Simple
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                      more_env: []
                      words: [{<echo>} {(SQ <'             default: development'>)}]
                      redirects: []
                      do_fork: T
                    )
                    (command.Simple
                      blame_tok: <echo>
                      more_env: []
                      words: [{<echo>}]
                      redirects: []
                      do_fork: T
                    )
                    (command.Simple
                      blame_tok: <echo>
                      more_env: []
                      words: [{<echo>} {(SQ <'  -C <path>  path to the balls conf file, BALLS_CONF'>)}]
                      redirects: []
                      do_fork: T
                    )
                    (command.Simple
                      blame_tok: <echo>
                      more_env: []
                      words: [{<echo>} {(SQ <'             default: ./config/$BALLS_ENV.sh'>)}]
                      redirects: []
                      do_fork: T
                    )
                  ]
                  right: <Id.Op_DSemi _>
                )
              ]
              arms_end: <Id.KW_Esac esac>
              redirects: []
            )
          ]
          right: <Id.KW_Done done>
        )
      redirects: []
    )
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          redirects: []
        )
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          pairs: [
            (AssignPair
              left: <Id.Lit_VarLike 'BALLS_ENV='>
              lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'BALLS_ENV='> name:BALLS_ENV)
              op: assign_op.Equal
              rhs: {<development>}
            )
          ]
          redirects: []
        )
      ]
      ops: [<Id.Op_DAmp _>]
    )
    (command.AndOr
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        (command.DBracket
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          redirects: []
        )
        (command.ShAssignment
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          pairs: [
            (AssignPair
              left: <Id.Lit_VarLike 'BALLS_CONF='>
              lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'BALLS_CONF='> name:BALLS_CONF)
              op: assign_op.Equal
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          ]
          redirects: []
        )
      ]
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    )
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      more_env: []
      words: [{<.>} {(DQ ($ Id.VSub_DollarName BALLS_CONF))}]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <.>
      more_env: []
      words: [{<.>} {($ Id.VSub_DollarName BALLS_LIB) <'/balls.sh'>}]
      redirects: []
      do_fork: T
    )
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      to_match: (case_arg.Word w:{($ Id.VSub_DollarName mode)})
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      arms: [
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          pattern: (pat.Words words:[{<server>}])
          middle: <Id.Right_CasePat _>
          action: [
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              blame_tok: <balls>
              more_env: []
              words: [{<balls> <Id.Lit_Colon ':'> <Id.Lit_Colon ':'> ($ Id.VSub_DollarName mode)}]
              redirects: []
              do_fork: T
            )
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          right: <Id.Op_DSemi _>
        )
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          pattern: (pat.Words words:[{<Id.Lit_Star '*'>}])
          middle: <Id.Right_CasePat _>
          action: [
            (command.Simple
              blame_tok: <echo>
              more_env: []
              words: [{<echo>} {(DQ <unknown>)}]
              redirects: []
              do_fork: T
            )
          ]
          right: <Id.Op_DSemi _>
        )
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      arms_end: <Id.KW_Esac esac>
      redirects: []
    )
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)