(command.CommandList
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      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'wmfile='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'wmfile='> name:wmfile)
          op: assign_op.Equal
          rhs: {(DQ <'/tmp/watermark.'> ($ Id.VSub_Dollar '$') <.png>)}
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'fontsize='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'fontsize='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'fontsize='> name:fontsize)
          op: assign_op.Equal
          rhs: {(DQ <44>)}
        )
      ]
      redirects: []
    )
    (command.Simple
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      more_env: []
      words: [
        {<trap>}
        {
          (DQ 
            (CommandSub
              left_token: <Id.Left_Backtick '`'>
              child: 
                (command.Simple
                  blame_tok: <which>
                  more_env: []
                  words: [{<which>} {<rm>}]
                  redirects: []
                  do_fork: T
                )
              right: <Id.Backtick_Right '`'>
            ) <' -f '> ($ Id.VSub_DollarName wmfile)
          )
        }
        {<0>}
        {<1>}
        {<15>}
      ]
      redirects: []
      do_fork: T
    )
    (command.If
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      arms: [
        (IfArm
          keyword: <Id.KW_If if>
          cond: 
            (condition.Shell
              commands: [
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                  child: 
                    (command.Simple
                      blame_tok: <Id.Lit_LBracket '['>
                      more_env: []
                      words: [
                        {<Id.Lit_LBracket '['>}
                        {($ Id.VSub_Pound '#')}
                        {<-ne>}
                        {<2>}
                        {<Id.Lit_RBracket ']'>}
                      ]
                      redirects: []
                      do_fork: T
                    )
                  terminator: <Id.Op_Semi _>
                )
              ]
            )
          then_kw: <Id.KW_Then then>
          action: [
            (command.Sentence
              child: 
                (command.Simple
                  blame_tok: <echo>
                  more_env: []
                  words: [
                    {<echo>}
                    {
                      (DQ <'Usage: '> 
                        (CommandSub
                          left_token: <Id.Left_DollarParen '$('>
                          child: 
                            (command.Simple
                              blame_tok: <basename>
                              more_env: []
                              words: [{<basename>} {($ Id.VSub_Number 0)}]
                              redirects: []
                              do_fork: T
                            )
                          right: <Id.Eof_RParen _>
                        ) <' imagefile '>
                      ) <watermark>
                    }
                    {<text> (DQ )}
                  ]
                  redirects: [(Redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})]
                  do_fork: T
                )
              terminator: <Id.Op_Semi _>
            )
            (command.ControlFlow keyword:<Id.ControlFlow_Exit exit> arg_word:{<1>})
          ]
          spids: [50 64]
        )
      ]
      else_action: []
      fi_kw: <Id.KW_Fi fi>
      redirects: []
    )
    (command.If
      if_kw: <Id.KW_If if>
      arms: [
        (IfArm
          keyword: <Id.KW_If if>
          cond: 
            (condition.Shell
              commands: [
                (command.Sentence
                  child: 
                    (command.Simple
                      blame_tok: <Id.Lit_LBracket '['>
                      more_env: []
                      words: [
                        {<Id.Lit_LBracket '['>}
                        {<Id.KW_Bang '!'>}
                        {<-r>}
                        {(DQ ($ Id.VSub_Number 1))}
                        {<Id.Lit_RBracket ']'>}
                      ]
                      redirects: []
                      do_fork: T
                    )
                  terminator: <Id.Op_Semi _>
                )
              ]
            )
          then_kw: <Id.KW_Then then>
          action: [
            (command.Sentence
              child: 
                (command.Simple
                  blame_tok: <echo>
                  more_env: []
                  words: [
                    {<echo>}
                    {
                      (DQ 
                        (CommandSub
                          left_token: <Id.Left_DollarParen '$('>
                          child: 
                            (command.Simple
                              blame_tok: <basename>
                              more_env: []
                              words: [{<basename>} {($ Id.VSub_Number 0)}]
                              redirects: []
                              do_fork: T
                            )
                          right: <Id.Eof_RParen _>
                        ) <': Can\'t read input image '> ($ Id.VSub_Number 1)
                      )
                    }
                  ]
                  redirects: [(Redir op:<Id.Redir_GreatAnd '>&'> loc:(redir_loc.Fd fd:1) arg:{<2>})]
                  do_fork: T
                )
              terminator: <Id.Op_Semi _>
            )
            (command.ControlFlow keyword:<Id.ControlFlow_Exit exit> arg_word:{<1>})
          ]
          spids: [96 112]
        )
      ]
      else_action: []
      fi_kw: <Id.KW_Fi fi>
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'dimensions='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'dimensions='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'dimensions='> name:dimensions)
          op: assign_op.Equal
          rhs: 
            {
              (DQ 
                (CommandSub
                  left_token: <Id.Left_DollarParen '$('>
                  child: 
                    (command.Simple
                      blame_tok: <identify>
                      more_env: []
                      words: [{<identify>} {<-format>} {(DQ <'%G'>)} {(DQ ($ Id.VSub_Number 1))}]
                      redirects: []
                      do_fork: T
                    )
                  right: <Id.Eof_RParen _>
                )
              )
            }
        )
      ]
      redirects: []
    )
    (command.Simple
      blame_tok: <convert>
      more_env: []
      words: [
        {<convert>}
        {<-size>}
        {($ Id.VSub_DollarName dimensions)}
        {<xc> <Id.Lit_Colon ':'> <none>}
        {<-pointsize>}
        {($ Id.VSub_DollarName fontsize)}
        {<-gravity>}
        {<south>}
        {<-draw>}
        {
          (DQ <'fill black text 1,1 \''> ($ Id.VSub_Number 2) <'\' text 0,0 \''> ($ Id.VSub_Number 2) 
            <'\' fill white text 2,2 \''> ($ Id.VSub_Number 2) <'\''>
          )
        }
        {($ Id.VSub_DollarName wmfile)}
      ]
      redirects: []
      do_fork: T
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'suffix='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'suffix='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'suffix='> name:suffix)
          op: assign_op.Equal
          rhs: 
            {
              (DQ 
                (CommandSub
                  left_token: <Id.Left_DollarParen '$('>
                  child: 
                    (command.Pipeline
                      children: [
                        (command.Simple
                          blame_tok: <echo>
                          more_env: []
                          words: [{<echo>} {($ Id.VSub_Number 1)}]
                          redirects: []
                          do_fork: T
                        )
                        (command.Simple
                          blame_tok: <rev>
                          more_env: []
                          words: [{<rev>}]
                          redirects: []
                          do_fork: T
                        )
                        (command.Simple
                          blame_tok: <cut>
                          more_env: []
                          words: [{<cut>} {<-d.>} {<-f1>}]
                          redirects: []
                          do_fork: T
                        )
                        (command.Simple
                          blame_tok: <rev>
                          more_env: []
                          words: [{<rev>}]
                          redirects: []
                          do_fork: T
                        )
                      ]
                      ops: [<Id.Op_Pipe _> <Id.Op_Pipe _> <Id.Op_Pipe _>]
                    )
                  right: <Id.Eof_RParen _>
                )
              )
            }
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'prefix='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'prefix='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'prefix='> name:prefix)
          op: assign_op.Equal
          rhs: 
            {
              (DQ 
                (CommandSub
                  left_token: <Id.Left_DollarParen '$('>
                  child: 
                    (command.Pipeline
                      children: [
                        (command.Simple
                          blame_tok: <echo>
                          more_env: []
                          words: [{<echo>} {($ Id.VSub_Number 1)}]
                          redirects: []
                          do_fork: T
                        )
                        (command.Simple
                          blame_tok: <rev>
                          more_env: []
                          words: [{<rev>}]
                          redirects: []
                          do_fork: T
                        )
                        (command.Simple
                          blame_tok: <cut>
                          more_env: []
                          words: [{<cut>} {<-d.>} {<-f2->}]
                          redirects: []
                          do_fork: T
                        )
                        (command.Simple
                          blame_tok: <rev>
                          more_env: []
                          words: [{<rev>}]
                          redirects: []
                          do_fork: T
                        )
                      ]
                      ops: [<Id.Op_Pipe _> <Id.Op_Pipe _> <Id.Op_Pipe _>]
                    )
                  right: <Id.Eof_RParen _>
                )
              )
            }
        )
      ]
      redirects: []
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'newfilename='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'newfilename='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'newfilename='> name:newfilename)
          op: assign_op.Equal
          rhs: {(DQ ($ Id.VSub_DollarName prefix) <'+wm.'> ($ Id.VSub_DollarName suffix))}
        )
      ]
      redirects: []
    )
    (command.Simple
      blame_tok: <composite>
      more_env: []
      words: [
        {<composite>}
        {<-dissolve>}
        {<75> <Id.Lit_Other '%'>}
        {<-gravity>}
        {<south>}
        {($ Id.VSub_DollarName wmfile)}
        {(DQ ($ Id.VSub_Number 1))}
        {(DQ ($ Id.VSub_DollarName newfilename))}
      ]
      redirects: []
      do_fork: T
    )
    (command.Simple
      blame_tok: <echo>
      more_env: []
      words: [{<echo>} {(DQ <'Created new watermarked image file '> ($ Id.VSub_DollarName newfilename))}]
      redirects: []
      do_fork: T
    )
    (command.ControlFlow keyword:<Id.ControlFlow_Exit exit> arg_word:{<0>})
  ]
)