(CommandList
  children: [
    (SimpleCommand
      words: [
        {(xargs)}
        {(perl)}
        {(-n)}
        {(-i)}
        {(-e)}
        {(SQ <'\n'> <'\tprint;\n'> <'\ts/\\$(Id|OpenBSD): [^\\$]*/\\$FreeBSD/ && print;\n'>)}
      ]
      redirects: [(Redir op:<Redir_Less '<'> fd:16777215 arg_word:{(keywords)})]
    )
    (SimpleCommand
      words: [
        {(xargs)}
        {(perl)}
        {(-n)}
        {(-i)}
        {(-e)}
        {
          (SQ <'\n'> <'\tprint;\n'> 
            <'\tm/^\\#include "includes.h"/ && print "__RCSID(\\"\\$FreeBSD\\$\\");\\n";\n'>
          )
        }
      ]
      redirects: [(Redir op:<Redir_Less '<'> fd:16777215 arg_word:{(rcsid)})]
    )
  ]
)