(List
  (Com {[LIT_CHARS set]} {[LIT_CHARS -o]} {[LIT_CHARS nounset]})
  (Com {[LIT_CHARS set]} {[LIT_CHARS -o]} {[LIT_CHARS errexit]})
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('PREFIX', {[VarSub PREFIX test_op=VS_TEST_COLON_HYPHEN {}]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('VERIFY', {[VarSub VERIFY test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS yes]}]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('EMU_HACK', {[VarSub EMU_HACK test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS yes]}]})])
  (Com {[LIT_CHARS python]} {[LIT_CHARS ../prepare_input.py]} {[LIT_CHARS --config]} {[ComSub (Com {[LIT_CHARS basename]} {[ComSub (Com {[LIT_CHARS pwd]})]})]} {[LIT_CHARS ref]})
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('LIST', {[DQ [LIT_CHARS "pixels_out.cook pixels_out.kajiya pixels_out.rushmeier"]]})])
  (Com {[VarSub PREFIX]} {[VarSub 1]} {[VarSub DASHDASH]} {[LIT_CHARS chair.control.kajiya]} {[LIT_CHARS chair.camera]} {[LIT_CHARS chair.surfaces]} {[LIT_CHARS chair.kajiya.ppm]} {[LIT_CHARS ppm]} {[LIT_CHARS pixels_out.kajiya]}
    <
    (FilenameRedirectNode filename={[LIT_CHARS stdout1.out]} <REDIR_GREAT ">"> 1),
    (FilenameRedirectNode filename={[LIT_CHARS stderr1.out]} <REDIR_GREAT "2>"> 2),
    >
  )
  (Com {[VarSub PREFIX]} {[VarSub 1]} {[VarSub DASHDASH]} {[LIT_CHARS chair.control.cook]} {[LIT_CHARS chair.camera]} {[LIT_CHARS chair.surfaces]} {[LIT_CHARS chair.cook.ppm]} {[LIT_CHARS ppm]} {[LIT_CHARS pixels_out.cook]}
    <
    (FilenameRedirectNode filename={[LIT_CHARS stdout2.out]} <REDIR_GREAT ">"> 1),
    (FilenameRedirectNode filename={[LIT_CHARS stderr2.out]} <REDIR_GREAT "2>"> 2),
    >
  )
  (Com {[VarSub PREFIX]} {[VarSub 1]} {[VarSub DASHDASH]} {[LIT_CHARS chair.control.rushmeier]} {[LIT_CHARS chair.camera]} {[LIT_CHARS chair.surfaces]} {[LIT_CHARS chair.rushmeier.ppm]} {[LIT_CHARS ppm]} {[LIT_CHARS pixels_out.rushmeier]}
    <
    (FilenameRedirectNode filename={[LIT_CHARS stdout3.out]} <REDIR_GREAT ">"> 1),
    (FilenameRedirectNode filename={[LIT_CHARS stderr3.out]} <REDIR_GREAT "2>"> 2),
    >
  )
  (If
    (DBracket {B2 BINARY_STRING_NOT_EQUAL {[DQ [VarSub VERIFY]]} {[DQ [LIT_CHARS no]]}})
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS VERIFY]]})
      (For i [{[VarSub LIST]}])
        (Com {[LIT_CHARS ../specdiff.sh]} {[LIT_CHARS -a]} {[LIT_CHARS 0.005]} {[VarSub i]} {[LIT_CHARS data/ref/output/] [VarSub i]})
      )
    )
  )
  (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS OK]]})
)