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          rhs: 
            {
              (DQ 
                (CommandSub
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                    (command.Simple
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                      more_env: []
                      words: [{<which>} {<date>}]
                      redirects: []
                      do_fork: T
                    )
                  right: <Id.Backtick_Right '`'>
                )
              )
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        )
      ]
      redirects: []
    )
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      name: daysInMonth
      body: 
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              to_match: (case_arg.Word w:{($ Id.VSub_Number 1)})
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                      pairs: [
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                      pairs: [
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                      pairs: [
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                      pairs: [
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                )
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              redirects: []
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          ]
          redirects: []
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    (command.ShFunction
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      name: isleap
      body: 
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              pairs: [
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                                more_env: []
                                words: [
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                                  {<-d>}
                                  {<'12/31/'> ($ Id.VSub_Number 1)}
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                                redirects: []
                                do_fork: T
                              )
                              (command.Simple
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                                more_env: []
                                words: [{<grep>} {<366>}]
                                redirects: []
                                do_fork: T
                              )
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                            ops: [<Id.Op_Pipe _>]
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                      )
                    }
                )
              ]
              redirects: []
            )
          ]
          redirects: []
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                      more_env: []
                      words: [
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                        {<3>}
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                      redirects: []
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          then_kw: <Id.KW_Then then>
          action: [
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              more_env: []
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                {
                  (DQ <'Usage: '> 
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                      child: 
                        (command.Simple
                          blame_tok: <basename>
                          more_env: []
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                          redirects: []
                          do_fork: T
                        )
                      right: <Id.Eof_RParen _>
                    ) <' mon day year'>
                  )
                }
              ]
              redirects: []
              do_fork: T
            )
            (command.Simple
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              more_env: []
              words: [{<echo>} {(DQ <'  with just numerical values (ex: 7 7 1776)'>)}]
              redirects: []
              do_fork: T
            )
            (command.ControlFlow keyword:<Id.ControlFlow_Exit exit> arg_word:{<1>})
          ]
          spids: [156 170]
        )
      ]
      else_action: []
      fi_kw: <Id.KW_Fi fi>
      redirects: []
    )
    (command.Simple
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      more_env: []
      words: [{($ Id.VSub_DollarName date)} {<--version>}]
      redirects: [
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      do_fork: T
    )
    (command.If
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                      words: [
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          action: [
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                  more_env: []
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                      (DQ <'Sorry, but '> 
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                          right: <Id.Eof_RParen _>
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      redirects: []
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    (command.Simple
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      more_env: []
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          (CommandSub
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                words: [
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                redirects: []
                do_fork: T
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            right: <Id.Eof_RParen _>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.CommandList
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              pairs: [
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        )
        (command.Sentence
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        )
        (command.ShAssignment
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          ]
          redirects: []
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      ]
    )
    (command.Simple
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      more_env: []
      words: [{<daysInMonth>} {($ Id.VSub_DollarName startmon)}]
      redirects: []
      do_fork: T
    )
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          cond: 
            (condition.Shell
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                      more_env: []
                      words: [
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                        {<0>}
                        {<-o>}
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                      redirects: []
                      do_fork: T
                    )
                  terminator: <Id.Op_Semi _>
                )
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            )
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          action: [
            (command.Sentence
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                (command.Simple
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                  more_env: []
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                      (DQ <'Invalid: Month #'> ($ Id.VSub_DollarName startmon) <' only has '> 
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                      )
                    }
                  ]
                  redirects: [(Redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})]
                  do_fork: T
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              terminator: <Id.Op_Semi _>
            )
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          spids: [287 309]
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      redirects: []
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                      more_env: []
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                        {<2>}
                        {<-a>}
                        {($ Id.VSub_DollarName startday)}
                        {<-eq>}
                        {<29>}
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                      redirects: []
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          action: [
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                  cond: 
                    (condition.Shell
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                              more_env: []
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                                {<-z>}
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                  then_kw: <Id.KW_Then then>
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                      more_env: []
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                          (DQ ($ Id.VSub_DollarName startyear) 
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              redirects: []
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          spids: [334 356]
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      redirects: []
    )
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          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'startdatefmt='> name:startdatefmt)
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          rhs: 
            {
              (DQ ($ Id.VSub_DollarName startmon) <'/'> ($ Id.VSub_DollarName startday) <'/'> 
                ($ Id.VSub_DollarName startyear)
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        )
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      redirects: []
    )
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      pairs: [
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                            more_env: []
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                              {<-d>}
                              {(DQ <'12/31/'> ($ Id.VSub_DollarName startyear))}
                              {<Id.Lit_Other '+'> <Id.Lit_Other '%'> <j>}
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                            redirects: []
                            do_fork: T
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                        right: <Id.Eof_RParen _>
                      )
                    }
                  right: <Id.Right_DollarDParen _>
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                      (CommandSub
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                        child: 
                          (command.Simple
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                            more_env: []
                            words: [
                              {($ Id.VSub_DollarName date)}
                              {<-d>}
                              {($ Id.VSub_DollarName startdatefmt)}
                              {<Id.Lit_Other '+'> <Id.Lit_Other '%'> <j>}
                            ]
                            redirects: []
                            do_fork: T
                          )
                        right: <Id.Eof_RParen _>
                      )
                    }
                  right: <Id.Right_DollarDParen _>
                )
              )
            }
        )
      ]
      redirects: []
    )
    (command.ShAssignment
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      pairs: [
        (AssignPair
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          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'daysleftinyear='> name:daysleftinyear)
          op: assign_op.Equal
          rhs: 
            {
              (word_part.ArithSub
                left: <Id.Left_DollarDParen '$(('>
                anode: {($ Id.VSub_DollarName calculate)}
                right: <Id.Right_DollarDParen _>
              )
            }
        )
      ]
      redirects: []
    )
    (command.ShAssignment
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      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'daysbetweenyears='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'daysbetweenyears='> name:daysbetweenyears)
          op: assign_op.Equal
          rhs: {<0>}
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'tempyear='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'tempyear='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'tempyear='> name:tempyear)
          op: assign_op.Equal
          rhs: 
            {
              (word_part.ArithSub
                left: <Id.Left_DollarDParen '$(('>
                anode: 
                  (arith_expr.Binary
                    op_id: Id.Arith_Plus
                    left: {($ Id.VSub_DollarName startyear)}
                    right: {<Id.Lit_Digits 1>}
                  )
                right: <Id.Right_DollarDParen _>
              )
            }
        )
      ]
      redirects: []
    )
    (command.WhileUntil
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      cond: 
        (condition.Shell
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                (command.Simple
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                  more_env: []
                  words: [
                    {<Id.Lit_LBracket '['>}
                    {($ Id.VSub_DollarName tempyear)}
                    {<-lt>}
                    {($ Id.VSub_DollarName thisyear)}
                    {<Id.Lit_RBracket ']'>}
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                  redirects: []
                  do_fork: T
                )
              terminator: <Id.Op_Semi _>
            )
          ]
        )
      body: 
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          children: [
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              pairs: [
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                  lhs: 
                    (sh_lhs_expr.Name
                      left: <Id.Lit_VarLike 'daysbetweenyears='>
                      name: daysbetweenyears
                    )
                  op: assign_op.Equal
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                    {
                      (word_part.ArithSub
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                        anode: 
                          (arith_expr.Binary
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                                          (command.Simple
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                                            more_env: []
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                                              {<-d>}
                                              {(DQ <'12/31/'> ($ Id.VSub_DollarName tempyear))}
                                              {<Id.Lit_Other '+'> <Id.Lit_Other '%'> <j>}
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                                            redirects: []
                                            do_fork: T
                                          )
                                        right: <Id.Eof_RParen _>
                                      )
                                    }
                                  right: <Id.Right_DollarDParen _>
                                )
                              }
                          )
                        right: <Id.Right_DollarDParen _>
                      )
                    }
                )
              ]
              redirects: []
            )
            (command.ShAssignment
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              pairs: [
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                  lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'tempyear='> name:tempyear)
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                  rhs: 
                    {
                      (word_part.ArithSub
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                        anode: 
                          (arith_expr.Binary
                            op_id: Id.Arith_Plus
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                            right: {<Id.Lit_Digits 1>}
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                        right: <Id.Right_DollarDParen _>
                      )
                    }
                )
              ]
              redirects: []
            )
          ]
          right: <Id.KW_Done done>
        )
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'dayofyear='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'dayofyear='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'dayofyear='> name:dayofyear)
          op: assign_op.Equal
          rhs: 
            {
              (CommandSub
                left_token: <Id.Left_DollarParen '$('>
                child: 
                  (command.Simple
                    blame_tok: <Id.VSub_DollarName '$date'>
                    more_env: []
                    words: [{($ Id.VSub_DollarName date)} {<Id.Lit_Other '+'> <Id.Lit_Other '%'> <j>}]
                    redirects: []
                    do_fork: T
                  )
                right: <Id.Eof_RParen _>
              )
            }
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'totaldays='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'totaldays='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'totaldays='> name:totaldays)
          op: assign_op.Equal
          rhs: 
            {
              (word_part.ArithSub
                left: <Id.Left_DollarDParen '$(('>
                anode: 
                  (arith_expr.Binary
                    op_id: Id.Arith_Plus
                    left: 
                      (arith_expr.Binary
                        op_id: Id.Arith_Plus
                        left: 
                          {
                            (word_part.ArithSub
                              left: <Id.Left_DollarDParen '$(('>
                              anode: 
                                {<Id.Lit_Digits 10> <Id.Lit_Pound '#'> 
                                  ($ Id.VSub_DollarName daysleftinyear)
                                }
                              right: <Id.Right_DollarDParen _>
                            )
                          }
                        right: 
                          {
                            (word_part.ArithSub
                              left: <Id.Left_DollarDParen '$(('>
                              anode: 
                                {<Id.Lit_Digits 10> <Id.Lit_Pound '#'> 
                                  ($ Id.VSub_DollarName daysbetweenyears)
                                }
                              right: <Id.Right_DollarDParen _>
                            )
                          }
                      )
                    right: 
                      {
                        (word_part.ArithSub
                          left: <Id.Left_DollarDParen '$(('>
                          anode: 
                            {<Id.Lit_Digits 10> <Id.Lit_Pound '#'> ($ Id.VSub_DollarName dayofyear)}
                          right: <Id.Right_DollarDParen _>
                        )
                      }
                  )
                right: <Id.Right_DollarDParen _>
              )
            }
        )
      ]
      redirects: []
    )
    (command.Simple
      blame_tok: <'/bin/echo'>
      more_env: []
      words: [
        {<'/bin/echo'>}
        {<-n>}
        {
          (DQ ($ Id.VSub_DollarName totaldays) <' days have elapsed between '> 
            ($ Id.VSub_DollarName startmon) <'/'> ($ Id.VSub_DollarName startday) <'/'> ($ Id.VSub_DollarName startyear) <' '>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <echo>
      more_env: []
      words: [
        {<echo>}
        {
          (DQ <'and today, day '> ($ Id.VSub_DollarName dayofyear) <' of '> 
            ($ Id.VSub_DollarName thisyear) <.>
          )
        }
      ]
      redirects: []
      do_fork: T
    )
    (command.ControlFlow keyword:<Id.ControlFlow_Exit exit> arg_word:{<0>})
  ]
)