(command.CommandList
  children: [
    (command.AndOr
      ops: [Op_DAmp Op_DPipe]
      children: [
        (C {(Lit_LBracket '[')} {(KW_Bang '!')} {(-z)} {(DQ ($ VSub_Number '$1'))} {(Lit_RBracket ']')})
        (command.ShAssignment
          pairs: [(assign_pair lhs:(sh_lhs_expr.Name name:mag) op:Equal rhs:{($ VSub_Number '$1')})]
        )
        (command.ShAssignment
          pairs: [(assign_pair lhs:(sh_lhs_expr.Name name:mag) op:Equal rhs:{(2)})]
        )
      ]
    )
    (command.ShFunction
      name: fullscreen_xmag_source
      body: 
        (command.BraceGroup
          children: [
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:geometry)
                  op: Equal
                  rhs: 
                    {
                      (command_sub
                        left_token: <Left_Backtick '`'>
                        command_list: 
                          (command.CommandList
                            children: [
                              (command.Pipeline
                                children: [
                                  (C {(xwininfo)} {(-root)})
                                  (C {(grep)} {(-E)} {(DQ (geometry))})
                                  (C {(sed)} {(SQ <'s/.* \\([0-9]*x[0-9]*\\).*/\\1/'>)})
                                ]
                                negated: F
                              )
                            ]
                          )
                      )
                    }
                )
              ]
            )
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:width)
                  op: Equal
                  rhs: 
                    {
                      (command_sub
                        left_token: <Left_Backtick '`'>
                        command_list: 
                          (command.CommandList
                            children: [
                              (command.Pipeline
                                children: [
                                  (C {(echo)} {($ VSub_DollarName '$geometry')})
                                  (C {(cut)} {(-dx)} {(-f1)})
                                ]
                                negated: F
                              )
                            ]
                          )
                      )
                    }
                )
              ]
            )
            (command.ShAssignment
              pairs: [
                (assign_pair
                  lhs: (sh_lhs_expr.Name name:height)
                  op: Equal
                  rhs: 
                    {
                      (command_sub
                        left_token: <Left_Backtick '`'>
                        command_list: 
                          (command.CommandList
                            children: [
                              (command.Pipeline
                                children: [
                                  (C {(echo)} {($ VSub_DollarName '$geometry')})
                                  (C {(cut)} {(-dx)} {(-f2)})
                                ]
                                negated: F
                              )
                            ]
                          )
                      )
                    }
                )
              ]
            )
            (command.ShAssignment
              pairs: [(assign_pair lhs:(sh_lhs_expr.Name name:xmag_menu) op:Equal rhs:{(20)})]
            )
            (C {(echo)} 
              {
                (command_sub
                  left_token: <Left_Backtick '`'>
                  command_list: 
                    (command.CommandList
                      children: [
                        (C {(expr)} {($ VSub_DollarName '$width')} {(/)} {($ VSub_DollarName '$mag')})
                      ]
                    )
                ) (x) 
                (command_sub
                  left_token: <Left_Backtick '`'>
                  command_list: 
                    (command.CommandList
                      children: [
                        (C {(expr)} {(word_part.EscapedLiteral token:<Lit_EscapedChar '\\('>)} 
                          {($ VSub_DollarName '$height')} {(-)} {($ VSub_DollarName '$xmag_menu')} {(word_part.EscapedLiteral token:<Lit_EscapedChar '\\)'>)} {(/)} 
                          {($ VSub_DollarName '$mag')}
                        )
                      ]
                    )
                )
              }
            )
          ]
        )
    )
    (C {(xmag)} {(-source)} 
      {
        (command_sub
          left_token: <Left_Backtick '`'>
          command_list: (command.CommandList children:[(C {(fullscreen_xmag_source)})])
        )
      } {(-mag)} {($ VSub_DollarName '$mag')}
    )
  ]
)