(List
  (Pipeline
    (Com {[LIT_CHARS dd]} {[LIT_VAR_LIKE "if="] [LIT_CHARS /dev/zero] =} {[LIT_VAR_LIKE "bs="] [LIT_CHARS 1048576] =} {[LIT_VAR_LIKE "count="] [LIT_CHARS 100] =}
      <
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
      >
    )
    (Com {[LIT_CHARS /usr/bin/time]} {[LIT_CHARS ./test-sha1]}
      <
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
      >
    )
  )
  (While
    (Com {[LIT_CHARS read]} {[LIT_CHARS expect]} {[LIT_CHARS cnt]} {[LIT_CHARS pfx]}    )
    (List
      (Case to_match={[DQ [VarSub expect]]}, pat_word_list=[[{[SQ <LIT_CHARS "#">] [LIT_OTHER "*"]}]]
        (Com {[LIT_CHARS continue]}        )
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('actual', {[ComSub (Pipeline (List (AndOr OP_OR_IF (Com {[LIT_CHARS test]} {[LIT_CHARS -z]} {[DQ [VarSub pfx]]}) (Com {[LIT_CHARS echo]} {[DQ [VarSub pfx]]}) ) (Pipeline (Com redirects=[(FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2)]{[LIT_CHARS dd]} {[LIT_VAR_LIKE "if="] [LIT_CHARS /dev/zero] =} {[LIT_VAR_LIKE "bs="] [LIT_CHARS 1048576] =} {[LIT_VAR_LIKE "count="] [VarSub cnt] =}) (Com {[LIT_CHARS perl]} {[LIT_CHARS -pe]} {[SQ <LIT_CHARS "y/\\000/g/">]}) ) ) (Com {[LIT_CHARS ./test-sha1]} {[VarSub cnt]}) )]})])
      (If
        (Com {[LIT_CHARS test]} {[DQ [VarSub expect]]} {[LIT_DBRACKET_LIKE "="]} {[DQ [VarSub actual]]}        )
        (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "OK: "][VarSub expect][LIT_CHARS " "][VarSub cnt][LIT_CHARS " "][VarSub pfx]]}        )
        (ElseTrue)
        (List
          (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "OOPS: "][VarSub cnt]]}
            <
            (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND ">&"> 1),
            >
          )
          (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "expect: "][VarSub expect]]}
            <
            (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND ">&"> 1),
            >
          )
          (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "actual: "][VarSub actual]]}
            <
            (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND ">&"> 1),
            >
          )
          (Com {[LIT_CHARS exit]} {[LIT_CHARS 1]}          )
        )
      )
    )
  )
  (Com {[LIT_CHARS exit]}  )
  (While
    (Com {[LIT_CHARS read]} {[LIT_CHARS cnt]} {[LIT_CHARS pfx]}    )
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('actual', {[ComSub (Pipeline (List (AndOr OP_OR_IF (Com {[LIT_CHARS test]} {[LIT_CHARS -z]} {[DQ [VarSub pfx]]}) (Com {[LIT_CHARS echo]} {[DQ [VarSub pfx]]}) ) (Pipeline (Com redirects=[(FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2)]{[LIT_CHARS dd]} {[LIT_VAR_LIKE "if="] [LIT_CHARS /dev/zero] =} {[LIT_VAR_LIKE "bs="] [LIT_CHARS 1048576] =} {[LIT_VAR_LIKE "count="] [VarSub cnt] =}) (Com {[LIT_CHARS perl]} {[LIT_CHARS -pe]} {[SQ <LIT_CHARS "y/\\000/g/">]}) ) ) (Com {[LIT_CHARS sha1sum]}) (Com {[LIT_CHARS sed]} {[LIT_CHARS -e]} {[SQ <LIT_CHARS "s/ .*//">]}) )]})])
      (Com {[LIT_CHARS echo]} {[DQ [VarSub actual][LIT_CHARS " "][VarSub cnt][LIT_CHARS " "][VarSub pfx]]}      )
    )
  )
)