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                        )
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                      negated: T
                    )
                  terminator: <Id.Op_Semi _>
                )
              ]
              action: [
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              spids: [235 256]
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      ]
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          ]
          action: [
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                      (command_sub
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                  action: [
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                        )
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                    )
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                  spids: [324 343]
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                    (assign_pair
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                )
              ]
            )
          ]
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    (C 
      {
        (braced_var_sub
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        )
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        (command.ShAssignment
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              op: assign_op.Equal
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              spids: [401]
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          ]
        )
      ]
    )
    (command.Simple
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        {<--date> <Id.Lit_Equals '='> 
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      ]
      redirects: [(redir.Redir op:<Id.Redir_Great '2>'> fd:2 arg_word:{($ Id.VSub_DollarName '$err')})]
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    (command.If
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              terminator: <Id.Op_Semi _>
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          action: [
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                )
                (command.Simple
                  words: [{<echo>} {(DQ <'Warning: sub second portion of timestamp ignored'>)}]
                  redirects: [(redir.Redir op:<Id.Redir_GreatAnd '>&'> fd:-1 arg_word:{<2>})]
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            )
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          spids: [423 442]
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                  terminator: <Id.Op_Semi _>
                )
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              action: [
                (command.ShAssignment
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                    (assign_pair
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                          (command_sub
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                          )
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                                          (DQ <'(('> ($ Id.VSub_DollarName '$epoch') <-> 
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                        )
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                          redirects: [(redir.Redir op:<Id.Redir_GreatAnd '>&'> fd:-1 arg_word:{<2>})]
                        )
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                )
              ]
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      ]
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)