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      pairs: [
        (assign_pair
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          op: Equal
          rhs: {(/sys/kernel/debug/tracing)}
        )
      ]
    )
    (command.CommandList
      children: [
        (command.Sentence
          child: 
            (command.Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (lhs_expr.LhsName name:flock)
                  op: Equal
                  rhs: {(/var/tmp/.ftrace-lock)}
                )
              ]
            )
          terminator: <Op_Semi ';'>
        )
        (command.Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(lhs_expr.LhsName name:wroteflock) op:Equal rhs:{(0)})]
        )
      ]
    )
    (command.CommandList
      children: [
        (command.Sentence
          child: 
            (command.Assignment
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              pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_duration) op:Equal rhs:{(0)})]
            )
          terminator: <Op_Semi ';'>
        )
        (command.Sentence
          child: 
            (command.Assignment
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              pairs: [(assign_pair lhs:(lhs_expr.LhsName name:duration) op:Equal rhs:(word.EmptyWord))]
            )
          terminator: <Op_Semi ';'>
        )
        (command.Sentence
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              pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_name) op:Equal rhs:{(0)})]
            )
          terminator: <Op_Semi ';'>
        )
        (command.Sentence
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              pairs: [(assign_pair lhs:(lhs_expr.LhsName name:name) op:Equal rhs:(word.EmptyWord))]
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          terminator: <Op_Semi ';'>
        )
        (command.Sentence
          child: 
            (command.Assignment
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              pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_pid) op:Equal rhs:{(0)})]
            )
          terminator: <Op_Semi ';'>
        )
        (command.Sentence
          child: 
            (command.Assignment
              keyword: Assign_None
              pairs: [(assign_pair lhs:(lhs_expr.LhsName name:pid) op:Equal rhs:(word.EmptyWord))]
            )
          terminator: <Op_Semi ';'>
        )
        (command.Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(lhs_expr.LhsName name:ftext) op:Equal rhs:(word.EmptyWord))]
        )
      ]
    )
    (command.CommandList
      children: [
        (command.Sentence
          child: 
            (command.Assignment
              keyword: Assign_None
              pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_time) op:Equal rhs:{(0)})]
            )
          terminator: <Op_Semi ';'>
        )
        (command.Sentence
          child: 
            (command.Assignment
              keyword: Assign_None
              pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_fail) op:Equal rhs:{(0)})]
            )
          terminator: <Op_Semi ';'>
        )
        (command.Sentence
          child: 
            (command.Assignment
              keyword: Assign_None
              pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_file) op:Equal rhs:{(0)})]
            )
          terminator: <Op_Semi ';'>
        )
        (command.Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(lhs_expr.LhsName name:file) op:Equal rhs:(word.EmptyWord))]
        )
      ]
    )
    (command.Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (lhs_expr.LhsName name:kevent_entry)
          op: Equal
          rhs: {(events/syscalls/sys_enter_kill)}
        )
      ]
    )
    (command.Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (lhs_expr.LhsName name:kevent_return)
          op: Equal
          rhs: {(events/syscalls/sys_exit_kill)}
        )
      ]
    )
    (C {(trap)} {(SQ <':'>)} {(INT)} {(QUIT)} {(TERM)} {(PIPE)} {(HUP)})
    (command.FuncDef
      name: usage
      body: 
        (command.BraceGroup
          children: [
            (command.SimpleCommand
              words: [{(cat)}]
              redirects: [
                (redir.HereDoc
                  op: <Redir_DLessDash '<<-'>
                  fd: 16777215
                  here_begin: {(END)}
                  here_end_span_id: 250
                  stdin_parts: [
                    ('USAGE: killsnoop [-hst] [-d secs] [-p PID] [-n name] [filename]\n')
                    ('                 -d seconds      # trace duration, and use buffers\n')
                    ('                 -n name         # process name to match \n')
                    ('                 -p PID          # PID to match on kill issue\n')
                    ('                 -t              # include time (seconds)\n')
                    ('                 -s              # human readable signal names\n')
                    ('                 -h              # this usage message\n')
                    ('  eg,\n')
                    ('       killsnoop                 # watch kill()s live (unbuffered)\n')
                    ('       killsnoop -d 1            # trace 1 sec (buffered)\n')
                    ('       killsnoop -p 181          # trace kill()s issued to PID 181 only\n')
                    ('\n')
                    ('See the man page and example file for more info.\n')
                  ]
                )
                (redir.Redir op:<Redir_GreatAnd '>&'> fd:16777215 arg_word:{(2)})
              ]
            )
            (command.ControlFlow token:<ControlFlow_Exit exit>)
          ]
        )
    )
    (command.FuncDef
      name: warn
      body: 
        (command.BraceGroup
          children: [
            (command.If
              arms: [
                (if_arm
                  cond: [
                    (command.Sentence
                      child: 
                        (command.Pipeline
                          children: [(C {(eval)} {(DQ ($ VSub_At '$@'))})]
                          negated: T
                        )
                      terminator: <Op_Semi ';'>
                    )
                  ]
                  action: [
                    (command.SimpleCommand
                      words: [
                        {(echo)}
                        {
                          (DQ ('WARNING: command failed ') 
                            (word_part.EscapedLiteralPart
                              token: <Lit_EscapedChar '\\"'>
                            ) ($ VSub_At '$@') (word_part.EscapedLiteralPart token:<Lit_EscapedChar '\\"'>)
                          )
                        }
                      ]
                      redirects: [(redir.Redir op:<Redir_GreatAnd '>&'> fd:16777215 arg_word:{(2)})]
                    )
                  ]
                )
              ]
            )
          ]
        )
    )
    (command.FuncDef
      name: end
      body: 
        (command.BraceGroup
          children: [
            (command.SimpleCommand
              words: [{(echo)}]
              redirects: [(redir.Redir op:<Redir_Great '2>'> fd:2 arg_word:{(/dev/null)})]
            )
            (command.SimpleCommand
              words: [{(echo)} {(DQ ('Ending tracing...'))}]
              redirects: [(redir.Redir op:<Redir_Great '2>'> fd:2 arg_word:{(/dev/null)})]
            )
            (C {(cd)} {($ VSub_DollarName '$tracing')})
            (C {(warn)} {(DQ ('echo 0 > ') ($ VSub_DollarName '$kevent_entry') (/enable))})
            (C {(warn)} {(DQ ('echo 0 > ') ($ VSub_DollarName '$kevent_return') (/enable))})
            (C {(warn)} {(DQ ('echo > trace'))})
            (command.AndOr
              ops: [Op_DAmp]
              children: [
                (command.DParen
                  child: (arith_expr.ArithVarRef token:<Lit_ArithVarLike wroteflock>)
                )
                (C {(warn)} {(DQ ('rm ') ($ VSub_DollarName '$flock'))})
              ]
            )
          ]
        )
    )
    (command.FuncDef
      name: die
      body: 
        (command.BraceGroup
          children: [
            (command.SimpleCommand
              words: [{(echo)} {(DQ ($ VSub_At '$@'))}]
              redirects: [(redir.Redir op:<Redir_GreatAnd '>&'> fd:16777215 arg_word:{(2)})]
            )
            (command.ControlFlow token:<ControlFlow_Exit exit> arg_word:{(1)})
          ]
        )
    )
    (command.FuncDef
      name: edie
      body: 
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          children: [
            (command.SimpleCommand
              words: [{(echo)} {(DQ ($ VSub_At '$@'))}]
              redirects: [(redir.Redir op:<Redir_GreatAnd '>&'> fd:16777215 arg_word:{(2)})]
            )
            (command.SimpleCommand
              words: [{(exec)}]
              redirects: [
                (redir.Redir op:<Redir_Great '>'> fd:16777215 arg_word:{(/dev/null)})
                (redir.Redir op:<Redir_GreatAnd '2>&'> fd:2 arg_word:{(1)})
              ]
            )
            (C {(end)})
            (command.ControlFlow token:<ControlFlow_Exit exit> arg_word:{(1)})
          ]
        )
    )
    (command.WhileUntil
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      cond: [
        (C {(getopts)} {(d) (Lit_Other ':') (hn) (Lit_Other ':') (p) (Lit_Other ':') (st)} {(opt)})
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      body: 
        (command.DoGroup
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            (command.Case
              to_match: {($ VSub_DollarName '$opt')}
              arms: [
                (case_arm
                  pat_list: [{(d)}]
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                    (command.Sentence
                      child: 
                        (command.Assignment
                          keyword: Assign_None
                          pairs: [
                            (assign_pair
                              lhs: (lhs_expr.LhsName name:opt_duration)
                              op: Equal
                              rhs: {(1)}
                            )
                          ]
                        )
                      terminator: <Op_Semi ';'>
                    )
                    (command.Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (lhs_expr.LhsName name:duration)
                          op: Equal
                          rhs: {($ VSub_DollarName '$OPTARG')}
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                      ]
                    )
                  ]
                )
                (case_arm
                  pat_list: [{(n)}]
                  action: [
                    (command.Sentence
                      child: 
                        (command.Assignment
                          keyword: Assign_None
                          pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_name) op:Equal rhs:{(1)})]
                        )
                      terminator: <Op_Semi ';'>
                    )
                    (command.Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (lhs_expr.LhsName name:name)
                          op: Equal
                          rhs: {($ VSub_DollarName '$OPTARG')}
                        )
                      ]
                    )
                  ]
                )
                (case_arm
                  pat_list: [{(p)}]
                  action: [
                    (command.Sentence
                      child: 
                        (command.Assignment
                          keyword: Assign_None
                          pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_pid) op:Equal rhs:{(1)})]
                        )
                      terminator: <Op_Semi ';'>
                    )
                    (command.Assignment
                      keyword: Assign_None
                      pairs: [
                        (assign_pair
                          lhs: (lhs_expr.LhsName name:pid)
                          op: Equal
                          rhs: {($ VSub_DollarName '$OPTARG')}
                        )
                      ]
                    )
                  ]
                )
                (case_arm
                  pat_list: [{(t)}]
                  action: [
                    (command.Assignment
                      keyword: Assign_None
                      pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_time) op:Equal rhs:{(1)})]
                    )
                  ]
                )
                (case_arm
                  pat_list: [{(s)}]
                  action: [
                    (command.Assignment
                      keyword: Assign_None
                      pairs: [(assign_pair lhs:(lhs_expr.LhsName name:opt_fancy) op:Equal rhs:{(1)})]
                    )
                  ]
                )
                (case_arm pat_list:[{(h)} {(Lit_Other '?')}] action:[(C {(usage)})])
              ]
            )
          ]
        )
    )
    (C {(shift)} 
      {
        (word_part.ArithSubPart
          anode: 
            (arith_expr.ArithBinary
              op_id: Arith_Minus
              left: (arith_expr.ArithWord w:{($ VSub_DollarName '$OPTIND')})
              right: (arith_expr.ArithWord w:{(Lit_Digits 1)})
            )
        )
      }
    )
    (command.AndOr
      ops: [Op_DAmp]
      children: [(command.DParen child:(arith_expr.ArithWord w:{($ VSub_Pound '$#')})) (C {(usage)})]
    )
    (command.AndOr
      ops: [Op_DAmp]
      children: [
        (command.DParen
          child: 
            (arith_expr.ArithBinary
              op_id: Arith_DAmp
              left: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_pid>)
              right: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_name>)
            )
        )
        (C {(die)} {(DQ ('ERROR: use either -p or -n.'))})
      ]
    )
    (command.AndOr
      ops: [Op_DAmp]
      children: [
        (command.DParen child:(arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_pid>))
        (command.Assignment
          keyword: Assign_None
          pairs: [
            (assign_pair
              lhs: (lhs_expr.LhsName name:ftext)
              op: Equal
              rhs: {(DQ (' issued to PID ') ($ VSub_DollarName '$pid'))}
            )
          ]
        )
      ]
    )
    (command.AndOr
      ops: [Op_DAmp]
      children: [
        (command.DParen child:(arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_name>))
        (command.Assignment
          keyword: Assign_None
          pairs: [
            (assign_pair
              lhs: (lhs_expr.LhsName name:ftext)
              op: Equal
              rhs: 
                {
                  (DQ (' issued by process name ') 
                    (word_part.EscapedLiteralPart token:<Lit_EscapedChar '\\"'>) ($ VSub_DollarName '$name') (word_part.EscapedLiteralPart token:<Lit_EscapedChar '\\"'>)
                  )
                }
            )
          ]
        )
      ]
    )
    (command.If
      arms: [
        (if_arm
          cond: [
            (command.Sentence
              child: 
                (command.DParen
                  child: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_duration>)
                )
              terminator: <Op_Semi ';'>
            )
          ]
          action: [
            (C {(echo)} 
              {
                (DQ ('Tracing kill()s') ($ VSub_DollarName '$ftext') (' for ') 
                  ($ VSub_DollarName '$duration') (' seconds (buffered)...')
                )
              }
            )
          ]
        )
      ]
      else_action: [
        (C {(echo)} {(DQ ('Tracing kill()s') ($ VSub_DollarName '$ftext') ('. Ctrl-C to end.'))})
      ]
    )
    (command.AndOr
      ops: [Op_DAmp Op_DAmp Op_DAmp Op_DAmp]
      children: [
        (command.DBracket expr:(bool_expr.BoolUnary op_id:BoolUnary_x child:{(/usr/bin/mawk)}))
        (command.Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(lhs_expr.LhsName name:awk) op:Equal rhs:{(DQ (mawk))})]
        )
        (C {(mawk)} {(-W)} {(interactive)})
        (C {(Lit_Other '[')} {($ VSub_QMark '$?')} {(-eq)} {(0)} {(Lit_Other ']')})
        (command.Assignment
          keyword: Assign_None
          pairs: [
            (assign_pair
              lhs: (lhs_expr.LhsName name:awk)
              op: Equal
              rhs: {(DQ ('mawk -W interactive'))}
            )
          ]
        )
      ]
    )
    (command.AndOr
      ops: [Op_DAmp]
      children: [
        (command.DBracket expr:(bool_expr.BoolUnary op_id:BoolUnary_x child:{(/usr/bin/gawk)}))
        (command.Assignment
          keyword: Assign_None
          pairs: [
            (assign_pair
              lhs: (lhs_expr.LhsName name:awk)
              op: Equal
              rhs: {(DQ ('gawk --non-decimal-data'))}
            )
          ]
        )
      ]
    )
    (command.AndOr
      ops: [Op_DPipe]
      children: [
        (C {(cd)} {($ VSub_DollarName '$tracing')})
        (C {(die)} 
          {
            (DQ ('ERROR: accessing tracing. Root user? Kernel has FTRACE?\n') 
              ('    debugfs mounted? (mount -t debugfs debugfs /sys/kernel/debug)')
            )
          }
        )
      ]
    )
    (command.AndOr
      ops: [Op_DAmp]
      children: [
        (command.DBracket
          expr: (bool_expr.BoolUnary op_id:BoolUnary_e child:{($ VSub_DollarName '$flock')})
        )
        (C {(die)} 
          {
            (DQ ('ERROR: ftrace may be in use by PID ') 
              (word_part.CommandSubPart
                command_list: 
                  (command.CommandList
                    children: [(C {(cat)} {($ VSub_DollarName '$flock')})]
                  )
                left_token: <Left_CommandSub '$('>
              ) (' ') ($ VSub_DollarName '$flock')
            )
          }
        )
      ]
    )
    (command.AndOr
      ops: [Op_DPipe]
      children: [
        (command.SimpleCommand
          words: [{(echo)} {($ VSub_Dollar '$$')}]
          redirects: [
            (redir.Redir
              op: <Redir_Great '>'>
              fd: 16777215
              arg_word: {($ VSub_DollarName '$flock')}
            )
          ]
        )
        (C {(die)} {(DQ ('ERROR: unable to write ') ($ VSub_DollarName '$flock') (.))})
      ]
    )
    (command.Assignment
      keyword: Assign_None
      pairs: [(assign_pair lhs:(lhs_expr.LhsName name:wroteflock) op:Equal rhs:{(1)})]
    )
    (command.SimpleCommand
      words: [{(echo)} {(nop)}]
      redirects: [(redir.Redir op:<Redir_Great '>'> fd:16777215 arg_word:{(current_tracer)})]
    )
    (command.If
      arms: [
        (if_arm
          cond: [
            (command.Sentence
              child: 
                (command.Pipeline
                  children: [
                    (command.SimpleCommand
                      words: [{(echo)} {(1)}]
                      redirects: [
                        (redir.Redir
                          op: <Redir_Great '>'>
                          fd: 16777215
                          arg_word: {($ VSub_DollarName '$kevent_entry') (/enable)}
                        )
                      ]
                    )
                  ]
                  negated: T
                )
              terminator: <Op_Semi ';'>
            )
          ]
          action: [(C {(edie)} {(DQ ('ERROR: enabling kill() entry tracepoint Exiting.'))})]
        )
      ]
    )
    (command.If
      arms: [
        (if_arm
          cond: [
            (command.Sentence
              child: 
                (command.Pipeline
                  children: [
                    (command.SimpleCommand
                      words: [{(echo)} {(1)}]
                      redirects: [
                        (redir.Redir
                          op: <Redir_Great '>'>
                          fd: 16777215
                          arg_word: {($ VSub_DollarName '$kevent_return') (/enable)}
                        )
                      ]
                    )
                  ]
                  negated: T
                )
              terminator: <Op_Semi ';'>
            )
          ]
          action: [(C {(edie)} {(DQ ('ERROR: enabling kill() return tracepoint. Exiting.'))})]
        )
      ]
    )
    (command.AndOr
      ops: [Op_DAmp]
      children: [
        (command.DParen child:(arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_time>))
        (C {(printf)} {(DQ ('%-16s '))} {(DQ (TIMEs))})
      ]
    )
    (C {(printf)} {(DQ ('%-16.16s %-6s %-8s %-10s %4s') (Lit_Other '\\') (n))} {(DQ (COMM))} {(DQ (PID))} 
      {(DQ (TPID))} {(DQ (SIGNAL))} {(DQ (RETURN))}
    )
    (command.Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (lhs_expr.LhsName name:offset)
          op: Equal
          rhs: 
            {
              (word_part.CommandSubPart
                command_list: 
                  (command.CommandList
                    children: [
                      (C {($ VSub_DollarName '$awk')} 
                        {
                          (SQ <'BEGIN { o = 0; }\n'> 
                            <'    $1 == "#" && $2 ~ /TASK/ && NF == 6 { o = 1; }\n'> <'    $2 ~ /TASK/ { print o; exit }'>
                          )
                        } {(trace)}
                      )
                    ]
                  )
                left_token: <Left_CommandSub '$('>
              )
            }
        )
      ]
    )
    (C {(warn)} {(DQ ('echo > trace'))})
    (command.Pipeline
      children: [
        (command.Subshell
          command_list: 
            (command.CommandList
              children: [
                (command.If
                  arms: [
                    (if_arm
                      cond: [
                        (command.Sentence
                          child: 
                            (command.DParen
                              child: (arith_expr.ArithVarRef token:<Lit_ArithVarLike opt_duration>)
                            )
                          terminator: <Op_Semi ';'>
                        )
                      ]
                      action: [(C {(sleep)} {($ VSub_DollarName '$duration')}) (C {(cat)} {(trace)})]
                    )
                  ]
                  else_action: [(C {(cat)} {(trace_pipe)})]
                )
              ]
            )
        )
        (C {($ VSub_DollarName '$awk')} {(-v)} {(Lit_VarLike 'o=') ($ VSub_DollarName '$offset')} {(-v)} 
          {(Lit_VarLike 'opt_name=') ($ VSub_DollarName '$opt_name')} {(-v)} {(Lit_VarLike 'name=') ($ VSub_DollarName '$name')} {(-v)} 
          {(Lit_VarLike 'opt_duration=') ($ VSub_DollarName '$opt_duration')} {(-v)} {(Lit_VarLike 'opt_time=') ($ VSub_DollarName '$opt_time')} {(-v)} 
          {(Lit_VarLike 'opt_pid=') ($ VSub_DollarName '$pid')} {(-v)} {(Lit_VarLike 'opt_fancy=') ($ VSub_DollarName '$opt_fancy')} 
          {
            (SQ <'\n'> <'    # fancy signal names\n'> <'    BEGIN {\n'> 
              <'        signals[1] = "SIGHUP"\n'> <'        signals[2] = "SIGINT"\n'> <'        signals[3] = "SIGQUIT"\n'> 
              <'        signals[4] = "SIGILL"\n'> <'        signals[6] = "SIGABRT"\n'> <'        signals[8] = "SIGFPE"\n'> 
              <'        signals[9] = "SIGKILL"\n'> <'        signals[11] = "SIGSEGV"\n'> <'        signals[13] = "SIGPIPE"\n'> 
              <'        signals[14] = "SIGALRM"\n'> <'        signals[15] = "SIGTERM"\n'> <'        signals[10] = "SIGUSR1"\n'> 
              <'        signals[12] = "SIGUSR2"\n'> <'        signals[17] = "SIGCHLD"\n'> <'        signals[18] = "SIGCONT"\n'> 
              <'        signals[19] = "SIGSTOP"\n'> <'        signals[20] = "SIGTSTP"\n'> <'        signals[21] = "SIGTTIN"\n'> 
              <'        signals[22] = "SIGTTOU"\n'> <'    }\n'> <'\n'> <'    # common fields\n'> <'    $1 != "#" {\n'> 
              <'        # task name can contain dashes\n'> <'        comm = pid = $1\n'> <'        sub(/-[0-9][0-9]*/, "", comm)\n'> 
              <'        if (opt_name && match(comm, name) == 0)\n'> <'            next\n'> <'        sub(/.*-/, "", pid)\n'> <'    }\n'> <'\n'> <'    # sys_kill() entry\n'> 
              <'    $1 != "#" && $(4+o) ~ /sys_kill/ && $(5+o) !~ /->/ {\n'> <'        #\n'> <'        # eg: ... sys_kill(pid:...\n'> <'        #\n'> <'        kpid = $(5+o)\n'> 
              <'        signal = $(7+o)\n'> <'        sub(/,$/, "", kpid)\n'> <'        sub(/\\)$/, "", signal)\n'> 
              <'        kpid = int("0x"kpid)\n'> <'        signal = int("0x"signal)\n'> <'        current[pid,"kpid"] = kpid\n'> 
              <'        current[pid,"signal"] = signal\n'> <'    }\n'> <'\n'> <'    # sys_kill exit\n'> <'    $1 != "#" && $(5+o) ~ /->/ {\n'> 
              <'        rv = int($NF)\n'> <'        killed_pid = current[pid,"kpid"]\n'> <'        signal = current[pid,"signal"]\n'> <'\n'> 
              <'        delete current[pid,"kpid"]\n'> <'        delete current[pid,"signal"]\n'> <'\n'> <'        if(opt_pid && killed_pid != opt_pid) {\n'> 
              <'            next\n'> <'        }\n'> <'\n'> <'        if (opt_time) {\n'> <'            time = $(3+o); sub(":", "", time)\n'> 
              <'            printf "%-16s ", time\n'> <'        }\n'> <'\n'> <'        if (opt_fancy) {\n'> <'            if (signals[signal] != "") {\n'> 
              <'                signal = signals[signal]\n'> <'            }\n'> <'        }\n'> <'\n'> 
              <
'        printf "%-16.16s %-6s %-8s %-10s %-4s\\n", comm, pid, killed_pid, signal,\n'
              > <'            rv\n'> <'    }\n'> <'\n'> 
              <'    $0 ~ /LOST.*EVENTS/ { print "WARNING: " $0 > "/dev/stderr" }\n'>
            )
          }
        )
      ]
      negated: F
    )
    (C {(end)})
  ]
)