(command.CommandList
  children: [
    (command.ShFunction
      name: gem_install
      body: 
        (command.BraceGroup
          children: [
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.Pipeline
                          children: [
                            (C {(gem)} {(list)})
                            (C {(grep)} {(-e)} {(DQ ('^') ($ Id.VSub_Number '$1') (' '))})
                          ]
                          negated: T
                        )
                      terminator: (Token id:Id.Op_Semi val:';' span_id:30)
                    )
                  ]
                  action: [
                    (C {(sudo)} {(gem)} {(install)} {($ Id.VSub_DollarName '$i')} {(--no-ri)} {(--no-rdoc)})
                  ]
                  spids: [11 32]
                )
              ]
            )
          ]
        )
    )
    (C {(Id.KW_Set set)} {(-x)})
    (C {(gem_install)} {(foodcritic)})
    (C {(gem_install)} {(tailor)})
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:TOP)
          op: assign_op.Equal
          rhs: 
            {
              (command_sub
                left_token: (Token id:Id.Left_Backtick val:'`' span_id:67)
                command_list: 
                  (command.CommandList
                    children: [(C {(git)} {(rev-parse)} {(--show-toplevel)})]
                  )
              )
            }
          spids: [66]
        )
      ]
    )
    (command.If
      arms: [
        (if_arm
          cond: [
            (command.Sentence
              child: 
                (C {(Id.Lit_LBracket '[')} {(Id.KW_Bang '!')} {(-L)} 
                  {(DQ ($ Id.VSub_DollarName '$TOP') (/.git/hooks/pre-commit))} {(Id.Lit_RBracket ']')}
                )
              terminator: (Token id:Id.Op_Semi val:';' span_id:91)
            )
          ]
          action: [
            (C {(ln)} {(-s)} {(../../tests/pre-commit)} 
              {(DQ ($ Id.VSub_DollarName '$TOP') (/.git/hooks/pre-commit))}
            )
          ]
          spids: [77 93]
        )
      ]
    )
  ]
)