(command.CommandList
  children: [
    (command.If
      arms: [
        (if_arm
          cond: [
            (command.Sentence
              child: 
                (command.Pipeline
                  children: [(C {(echo)} {(DQ ($ VSub_Number '$1'))}) (C {(grep)} {(-Eq)} {(DQ ('^/'))})]
                  negated: F
                )
              terminator: <Op_Semi ';'>
            )
          ]
          action: [
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:path)
                  op: Equal
                  rhs: {($ VSub_Number '$1')}
                )
              ]
            )
          ]
        )
      ]
      else_action: [
        (command.ShAssignment
          pairs: [
            (assign_pair
              lhs: (sh_lhs_expr.Name name:path)
              op: Equal
              rhs: 
                {
                  (command_sub
                    left_token: <Left_Backtick '`'>
                    command_list: (command.CommandList children:[(C {(pwd)})])
                  ) (/) ($ VSub_Number '$1')
                }
            )
          ]
        )
      ]
    )
    (command.ShAssignment
      pairs: [
        (assign_pair
          lhs: (sh_lhs_expr.Name name:path)
          op: Equal
          rhs: 
            {
              (command_sub
                left_token: <Left_Backtick '`'>
                command_list: 
                  (command.CommandList
                    children: [
                      (command.Pipeline
                        children: [
                          (C {(echo)} {(DQ ($ VSub_DollarName '$path'))})
                          (C {(sed)} {(SQ <'s/ /%20/g'>)})
                        ]
                        negated: F
                      )
                    ]
                  )
              )
            }
        )
      ]
    )
    (C {(firefox)} {(DQ ('file://') ($ VSub_DollarName '$path'))})
  ]
)