(command.CommandList
  children: [
    (command.ShAssignment
      left: <Id.Lit_VarLike 'pipename='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'pipename='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'pipename='> name:pipename)
          op: assign_op.Equal
          rhs: {<'/tmp/stap-sync-'> ($ Id.VSub_Dollar '$')}
        )
      ]
      redirects: []
    )
    (command.Simple
      blame_tok: <mkfifo>
      more_env: []
      words: [{<mkfifo>} {(DQ ($ Id.VSub_DollarName pipename))}]
      redirects: []
      do_fork: T
    )
    (command.ShFunction
      name_tok: <stap_filter>
      name: stap_filter
      body: 
        (BraceGroup
          left: <Id.Lit_LBrace '{'>
          children: [
            (command.WhileUntil
              keyword: <Id.KW_While while>
              cond: 
                (condition.Shell
                  commands: [
                    (command.Sentence
                      child: 
                        (command.Simple
                          blame_tok: <read>
                          more_env: []
                          words: [{<read>} {<line>}]
                          redirects: []
                          do_fork: T
                        )
                      terminator: <Id.Op_Semi _>
                    )
                  ]
                )
              body: 
                (command.DoGroup
                  left: <Id.KW_Do do>
                  children: [
                    (command.Case
                      case_kw: <Id.KW_Case case>
                      to_match: (case_arg.Word w:{(DQ ($ Id.VSub_DollarName line))})
                      arms_start: <Id.KW_In in>
                      arms: [
                        (CaseArm
                          left: <Id.Op_LParen _>
                          pattern: (pat.Words words:[{<saw> <Id.Lit_Star '*'>}])
                          middle: <Id.Right_CasePat _>
                          action: [
                            (command.Pipeline
                              children: [
                                (command.Simple
                                  blame_tok: <echo>
                                  more_env: []
                                  words: [{<echo>} {<-n>} {(DQ ($ Id.VSub_DollarName line))}]
                                  redirects: []
                                  do_fork: T
                                )
                                (command.Simple
                                  blame_tok: <sed>
                                  more_env: []
                                  words: [{<sed>} {<-r>} {(SQ <'s/.* with *//'>)}]
                                  redirects: []
                                  do_fork: T
                                )
                                (command.Simple
                                  blame_tok: <sed>
                                  more_env: []
                                  words: [{<sed>} {<-r>} {(SQ <'s/ *([a-zA-Z0-9_]*=)/\\n\\1/g'>)}]
                                  redirects: []
                                  do_fork: T
                                )
                                (command.Simple
                                  blame_tok: <sed>
                                  more_env: []
                                  words: [
                                    {<sed>}
                                    {<-r>}
                                    {(SQ <'s/(n|sz|size|len|length)=((0x)?[0-9a-f\\?]*)/n=\\2/'>)}
                                  ]
                                  redirects: []
                                  do_fork: T
                                )
                                (command.Simple
                                  blame_tok: <sed>
                                  more_env: []
                                  words: [
                                    {<sed>}
                                    {<-r>}
                                    {(SQ <'s/(src|source|from)=((0x)?[0-9a-f\\?]*)/src=\\2/'>)}
                                  ]
                                  redirects: []
                                  do_fork: T
                                )
                                (command.Simple
                                  blame_tok: <sed>
                                  more_env: []
                                  words: [
                                    {<sed>}
                                    {<-r>}
                                    {(SQ <'s/(dst|dest|to)=((0x)?[0-9a-f\\?]*)/dst=\\2/'>)}
                                  ]
                                  redirects: []
                                  do_fork: T
                                )
                                (command.Simple
                                  blame_tok: <sed>
                                  more_env: []
                                  words: [
                                    {<sed>}
                                    {<-r>}
                                    {
                                      (SQ 
                                        <
's/(dst|dest|to|src|source|from)=((0x)?ffff[0-9a-f\\?]*)//'
                                        >
                                      )
                                    }
                                  ]
                                  redirects: []
                                  do_fork: T
                                )
                                (command.Simple
                                  blame_tok: <sed>
                                  more_env: []
                                  words: [{<sed>} {(SQ <'/^$/ d'>)}]
                                  redirects: []
                                  do_fork: T
                                )
                                (command.Simple
                                  blame_tok: <sort>
                                  more_env: []
                                  words: [{<sort>} {<-t> <Id.Lit_Equals '='>} {<-k1>}]
                                  redirects: []
                                  do_fork: T
                                )
                                (command.Simple
                                  blame_tok: <tr>
                                  more_env: []
                                  words: [{<tr>} {(SQ <'\\n'>)} {(SQ <' '>)}]
                                  redirects: []
                                  do_fork: T
                                )
                              ]
                              ops: [
                                <Id.Op_Pipe _>
                                <Id.Op_Pipe _>
                                <Id.Op_Pipe _>
                                <Id.Op_Pipe _>
                                <Id.Op_Pipe _>
                                <Id.Op_Pipe _>
                                <Id.Op_Pipe _>
                                <Id.Op_Pipe _>
                                <Id.Op_Pipe _>
                              ]
                            )
                            (command.Simple
                              blame_tok: <echo>
                              more_env: []
                              words: [{<echo>}]
                              redirects: []
                              do_fork: T
                            )
                          ]
                          right: <Id.Op_DSemi _>
                        )
                        (CaseArm
                          left: <Id.Op_LParen _>
                          pattern: (pat.Words words:[{<Id.Lit_Star '*'>}])
                          middle: <Id.Right_CasePat _>
                          action: [
                            (command.Simple
                              blame_tok: <echo>
                              more_env: []
                              words: [{<echo>} {(DQ ($ Id.VSub_DollarName line))}]
                              redirects: []
                              do_fork: T
                            )
                          ]
                          right: <Id.Op_DSemi _>
                        )
                      ]
                      arms_end: <Id.KW_Esac esac>
                      redirects: []
                    )
                  ]
                  right: <Id.KW_Done done>
                )
              redirects: []
            )
          ]
          redirects: []
          right: <Id.Lit_RBrace '}'>
        )
    )
    (command.Sentence
      child: 
        (command.Simple
          blame_tok: <Id.Left_DollarParen '$('>
          more_env: []
          words: [
            {
              (CommandSub
                left_token: <Id.Left_DollarParen '$('>
                child: 
                  (command.Simple
                    blame_tok: <dirname>
                    more_env: []
                    words: [{<dirname>} {(DQ ($ Id.VSub_Number 0))}]
                    redirects: []
                    do_fork: T
                  )
                right: <Id.Eof_RParen _>
              ) <'/run-with-trap-syscalls.sh'>
            }
            {(DQ ($ Id.VSub_At '@'))}
          ]
          redirects: [
            (Redir
              op: <Id.Redir_Great '7>'>
              loc: (redir_loc.Fd fd:7)
              arg: {(DQ ($ Id.VSub_DollarName pipename))}
            )
          ]
          do_fork: T
        )
      terminator: <Id.Op_Amp _>
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'child_pid='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'child_pid='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'child_pid='> name:child_pid)
          op: assign_op.Equal
          rhs: {($ Id.VSub_Bang '!')}
        )
      ]
      redirects: []
    )
    (command.Sentence
      child: 
        (command.Pipeline
          children: [
            (command.Simple
              blame_tok: <stap>
              more_env: []
              words: [
                {<stap>}
                {<-x>}
                {($ Id.VSub_Bang '!')}
                {
                  (CommandSub
                    left_token: <Id.Left_DollarParen '$('>
                    child: 
                      (command.Simple
                        blame_tok: <dirname>
                        more_env: []
                        words: [{<dirname>} {(DQ ($ Id.VSub_Number 0))}]
                        redirects: []
                        do_fork: T
                      )
                    right: <Id.Eof_RParen _>
                  ) <'/copy-tofrom-user.stp'>
                }
              ]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <stap_filter>
              more_env: []
              words: [{<stap_filter>}]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <tee>
              more_env: []
              words: [{<tee>} {<'/dev/stderr'>}]
              redirects: []
              do_fork: T
            )
            (command.Simple
              blame_tok: <diff>
              more_env: []
              words: [{<diff>} {<-u>} {<->} {(DQ ($ Id.VSub_DollarName pipename))}]
              redirects: []
              do_fork: T
            )
          ]
          ops: [<Id.Op_Pipe _> <Id.Op_Pipe _> <Id.Op_Pipe _>]
        )
      terminator: <Id.Op_Amp _>
    )
    (command.ShAssignment
      left: <Id.Lit_VarLike 'stap_pid='>
      pairs: [
        (AssignPair
          left: <Id.Lit_VarLike 'stap_pid='>
          lhs: (sh_lhs_expr.Name left:<Id.Lit_VarLike 'stap_pid='> name:stap_pid)
          op: assign_op.Equal
          rhs: {($ Id.VSub_Bang '!')}
        )
      ]
      redirects: []
    )
    (command.WhileUntil
      keyword: <Id.KW_While while>
      cond: 
        (condition.Shell
          commands: [
            (command.Sentence
              child: 
                (command.Simple
                  blame_tok: <Id.Lit_LBracket '['>
                  more_env: []
                  words: [
                    {<Id.Lit_LBracket '['>}
                    {<-d>}
                    {<'/proc/'> ($ Id.VSub_DollarName child_pid)}
                    {<Id.Lit_RBracket ']'>}
                  ]
                  redirects: []
                  do_fork: T
                )
              terminator: <Id.Op_Semi _>
            )
          ]
        )
      body: 
        (command.DoGroup
          left: <Id.KW_Do do>
          children: [
            (command.Simple
              blame_tok: <sleep>
              more_env: []
              words: [{<sleep>} {<1>}]
              redirects: []
              do_fork: T
            )
          ]
          right: <Id.KW_Done done>
        )
      redirects: []
    )
    (command.Simple
      blame_tok: <kill>
      more_env: []
      words: [{<kill>} {($ Id.VSub_DollarName stap_pid)}]
      redirects: []
      do_fork: T
    )
  ]
)