(List
  (= scope=<EAssignScope.GLOBAL 1> flags=1 words=[] bindings=[('LC_ALL', {[LIT_CHARS C]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('base', {[ComSub (Com {[LIT_CHARS dirname]} {[VarSub 0]})]})])
  (Com {[LIT_CHARS .]} {[DQ [VarSub base][LIT_CHARS /md5.sh]]})
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('base64', {[LIT_CHARS tests/base64]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('test', {[DQ [VarSub 1 transform_ops=[VS_UNARY_POUND {[LIT_CHARS fate-]}]]]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('target_samples', {[VarSub 2]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('target_exec', {[VarSub 3]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('target_path', {[VarSub 4]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('command', {[VarSub 5]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('cmp', {[VarSub 6 test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS diff]}]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('ref', {[VarSub 7 test_op=VS_TEST_COLON_HYPHEN {[DQ [VarSub base][LIT_CHARS /ref/fate/][VarSub test]]}]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('fuzz', {[VarSub 8 test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS 1]}]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('threads', {[VarSub 9 test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS 1]}]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('thread_type', {[VarSub 10 test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS "frame+slice"]}]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('cpuflags', {[VarSub 11 test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS all]}]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('cmp_shift', {[VarSub 12 test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS 0]}]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('cmp_target', {[VarSub 13 test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS 0]}]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('size_tolerance', {[VarSub 14 test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS 0]}]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('cmp_unit', {[VarSub 15 test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS 2]}]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('gen', {[VarSub 16 test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS no]}]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('outdir', {[DQ [LIT_CHARS tests/data/fate]]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('outfile', {[DQ [VarSub outdir][LIT_CHARS /][VarSub test]]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('errfile', {[DQ [VarSub outdir][LIT_CHARS /][VarSub test][LIT_CHARS .err]]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('cmpfile', {[DQ [VarSub outdir][LIT_CHARS /][VarSub test][LIT_CHARS .diff]]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('repfile', {[DQ [VarSub outdir][LIT_CHARS /][VarSub test][LIT_CHARS .rep]]})])
  (FunctionDef target_path []
    (List
      (AndOr OP_AND_IF
        (Com {[LIT_CHARS test]} {[VarSub 1]} {[LIT_OTHER "="]} {[VarSub 1 transform_ops=[VS_UNARY_POUND {[LIT_SLASH /]}]]})
        (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('p', {[VarSub target_path] [LIT_CHARS /]})])
      )
      (Com {[LIT_CHARS echo]} {[VarSub p] [VarSub 1]})
    )
  )
  (FunctionDef compare []
    (Pipeline
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "scale=2; v = "][VarSub 1][LIT_CHARS " - "][VarSub 2][LIT_CHARS "; if (v < 0) v = -v; if (v > "][VarSub 3][LIT_CHARS ") r = 1; r"]]})
      (Com {[LIT_CHARS bc]})
    )
  )
  (FunctionDef do_tiny_psnr []
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('psnr', {[ComSub (Com {[LIT_CHARS tests/tiny_psnr]} {[DQ [VarSub 1]]} {[DQ [VarSub 2]]} {[VarSub cmp_unit]} {[VarSub cmp_shift]} {[LIT_CHARS 0]})]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('val', {[ComSub (Com {[LIT_CHARS expr]} {[DQ [VarSub psnr]]} {[LIT_OTHER ":"]} {[DQ [LIT_CHARS ".*"][VarSub 3][LIT_CHARS ": *"][\ LIT_ESCAPED_CHAR "\\("][LIT_CHARS "[0-9.]*"][\ LIT_ESCAPED_CHAR "\\)"]]})]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('size1', {[ComSub (Com {[LIT_CHARS expr]} {[DQ [VarSub psnr]]} {[LIT_OTHER ":"]} {[SQ <LIT_CHARS ".*bytes: *\\([0-9]*\\)">]})]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('size2', {[ComSub (Com {[LIT_CHARS expr]} {[DQ [VarSub psnr]]} {[LIT_OTHER ":"]} {[SQ <LIT_CHARS ".*bytes:[ 0-9]*/ *\\([0-9]*\\)">]})]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('val_cmp', {[ComSub (Com {[LIT_CHARS compare]} {[VarSub val]} {[VarSub cmp_target]} {[VarSub fuzz]})]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('size_cmp', {[ComSub (Com {[LIT_CHARS compare]} {[VarSub size1]} {[VarSub size2]} {[VarSub size_tolerance]})]})])
      (If
        (AndOr OP_OR_IF
          (Com {[LIT_OTHER "["]} {[DQ [VarSub val_cmp]]} {[LIT_OTHER "!"] [LIT_OTHER "="]} {[LIT_CHARS 0]} {[LIT_OTHER "]"]})
          (Com {[LIT_OTHER "["]} {[DQ [VarSub size_cmp]]} {[LIT_OTHER "!"] [LIT_OTHER "="]} {[LIT_CHARS 0]} {[LIT_OTHER "]"]})
        )
        (List
          (Com {[LIT_CHARS echo]} {[DQ [VarSub psnr]]})
          (Com {[LIT_CHARS return]} {[LIT_CHARS 1]})
        )
      )
    )
  )
  (FunctionDef oneoff []
    (Com {[LIT_CHARS do_tiny_psnr]} {[DQ [VarSub 1]]} {[DQ [VarSub 2]]} {[LIT_CHARS MAXDIFF]})
  )
  (FunctionDef stddev []
    (Com {[LIT_CHARS do_tiny_psnr]} {[DQ [VarSub 1]]} {[DQ [VarSub 2]]} {[LIT_CHARS stddev]})
  )
  (FunctionDef oneline []
    (Pipeline
      (Com {[LIT_CHARS printf]} {[SQ <LIT_CHARS "%s\\n">]} {[DQ [VarSub 1]]})
      (Com {[LIT_CHARS diff]} {[LIT_CHARS -u]} {[LIT_CHARS -b]} {[LIT_CHARS -]} {[DQ [VarSub 2]]})
    )
  )
  (FunctionDef run []
    (List
      (AndOr OP_AND_IF
        (Com {[LIT_CHARS test]} {[DQ [VarSub V test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS 0]}]]} {[LIT_CHARS -gt]} {[LIT_CHARS 0]})
        (Com {[LIT_CHARS echo]} {[DQ [VarSub target_exec]]} {[VarSub target_path] [LIT_CHARS /] [DQ [VarSub @]]}
          <
          (DescriptorRedirectNode target={[LIT_CHARS 3]} <REDIR_GREATAND ">&"> 1),
          >
        )
      )
      (Com {[VarSub target_exec]} {[VarSub target_path] [LIT_CHARS /] [DQ [VarSub @]]})
    )
  )
  (FunctionDef runecho []
    (List
      (AndOr OP_AND_IF
        (Com {[LIT_CHARS test]} {[DQ [VarSub V test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS 0]}]]} {[LIT_CHARS -gt]} {[LIT_CHARS 0]})
        (Com {[LIT_CHARS echo]} {[DQ [VarSub target_exec]]} {[VarSub target_path] [LIT_CHARS /] [DQ [VarSub @]]}
          <
          (DescriptorRedirectNode target={[LIT_CHARS 3]} <REDIR_GREATAND ">&"> 1),
          >
        )
      )
      (Com {[VarSub target_exec]} {[VarSub target_path] [LIT_CHARS /] [DQ [VarSub @]]}
        <
        (DescriptorRedirectNode target={[LIT_CHARS 3]} <REDIR_GREATAND ">&"> 1),
        >
      )
    )
  )
  (FunctionDef probefmt []
    (Com {[LIT_CHARS run]} {[LIT_CHARS ffprobe]} {[LIT_CHARS -show_entries]} {[LIT_VAR_LIKE "format="] [LIT_CHARS format_name] =} {[LIT_CHARS -print_format]} {[LIT_VAR_LIKE "default="] [LIT_VAR_LIKE "nw="] [LIT_CHARS 1] [LIT_OTHER ":"] [LIT_VAR_LIKE "nk="] [LIT_CHARS 1] =} {[LIT_CHARS -v]} {[LIT_CHARS 0]} {[DQ [VarSub @]]})
  )
  (FunctionDef probeframes []
    (Com {[LIT_CHARS run]} {[LIT_CHARS ffprobe]} {[LIT_CHARS -show_frames]} {[LIT_CHARS -v]} {[LIT_CHARS 0]} {[DQ [VarSub @]]})
  )
  (FunctionDef ffmpeg []
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('dec_opts', {[DQ [LIT_CHARS "-threads "][VarSub threads][LIT_CHARS " -thread_type "][VarSub thread_type]]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('ffmpeg_args', {[DQ [LIT_CHARS "-nostats -cpuflags "][VarSub cpuflags]]})])
      (For arg [{[VarSub @]}])
        (List
          (AndOr OP_AND_IF
            (Com {[LIT_OTHER "["]} {[LIT_CHARS x] [VarSub arg]} {[LIT_OTHER "="]} {[LIT_CHARS x-i]} {[LIT_OTHER "]"]})
            (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('ffmpeg_args', {[DQ [VarSub ffmpeg_args][LIT_CHARS " "][VarSub dec_opts]]})])
          )
          (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('ffmpeg_args', {[DQ [VarSub ffmpeg_args][LIT_CHARS " "][VarSub arg]]})])
        )
      )
      (Com {[LIT_CHARS run]} {[LIT_CHARS ffmpeg]} {[VarSub ffmpeg_args]})
    )
  )
  (FunctionDef framecrc []
    (Com {[LIT_CHARS ffmpeg]} {[DQ [VarSub @]]} {[LIT_CHARS -flags]} {[LIT_OTHER "+"] [LIT_CHARS bitexact]} {[LIT_CHARS -f]} {[LIT_CHARS framecrc]} {[LIT_CHARS -]})
  )
  (FunctionDef framemd5 []
    (Com {[LIT_CHARS ffmpeg]} {[DQ [VarSub @]]} {[LIT_CHARS -flags]} {[LIT_OTHER "+"] [LIT_CHARS bitexact]} {[LIT_CHARS -f]} {[LIT_CHARS framemd5]} {[LIT_CHARS -]})
  )
  (FunctionDef crc []
    (Com {[LIT_CHARS ffmpeg]} {[DQ [VarSub @]]} {[LIT_CHARS -f]} {[LIT_CHARS crc]} {[LIT_CHARS -]})
  )
  (FunctionDef md5 []
    (Com {[LIT_CHARS ffmpeg]} {[DQ [VarSub @]]} {[LIT_CHARS md5] [LIT_OTHER ":"]})
  )
  (FunctionDef pcm []
    (Com {[LIT_CHARS ffmpeg]} {[DQ [VarSub @]]} {[LIT_CHARS -vn]} {[LIT_CHARS -f]} {[LIT_CHARS s16le]} {[LIT_CHARS -]})
  )
  (FunctionDef fmtstdout []
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('fmt', {[VarSub 1]})])
      (Com {[LIT_CHARS shift]} {[LIT_CHARS 1]})
      (Com {[LIT_CHARS ffmpeg]} {[LIT_CHARS -flags]} {[LIT_OTHER "+"] [LIT_CHARS bitexact]} {[DQ [VarSub @]]} {[LIT_CHARS -f]} {[VarSub fmt]} {[LIT_CHARS -]})
    )
  )
  (FunctionDef enc_dec_pcm []
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('out_fmt', {[VarSub 1]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('dec_fmt', {[VarSub 2]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('pcm_fmt', {[VarSub 3]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('src_file', {[ComSub (Com {[LIT_CHARS target_path]} {[VarSub 4]})]})])
      (Com {[LIT_CHARS shift]} {[LIT_CHARS 4]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('encfile', {[DQ [VarSub outdir][LIT_CHARS /][VarSub test][LIT_CHARS .][VarSub out_fmt]]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('cleanfiles', {[VarSub encfile]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('encfile', {[ComSub (Com {[LIT_CHARS target_path]} {[VarSub encfile]})]})])
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS ffmpeg]} {[LIT_CHARS -i]} {[VarSub src_file]} {[DQ [VarSub @]]} {[LIT_CHARS -f]} {[VarSub out_fmt]} {[LIT_CHARS -y]} {[VarSub encfile]})
        (Com {[LIT_CHARS return]})
      )
      (Com {[LIT_CHARS ffmpeg]} {[LIT_CHARS -flags]} {[LIT_OTHER "+"] [LIT_CHARS bitexact]} {[LIT_CHARS -i]} {[VarSub encfile]} {[LIT_CHARS -c] [LIT_OTHER ":"] [LIT_CHARS a]} {[LIT_CHARS pcm_] [VarSub pcm_fmt]} {[LIT_CHARS -f]} {[VarSub dec_fmt]} {[LIT_CHARS -]})
    )
  )
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('FLAGS', {[DQ [LIT_CHARS "-flags +bitexact -sws_flags +accurate_rnd+bitexact -fflags +bitexact"]]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('DEC_OPTS', {[DQ [LIT_CHARS "-threads "][VarSub threads][LIT_CHARS " -idct simple "][VarSub FLAGS]]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('ENC_OPTS', {[DQ [LIT_CHARS "-threads 1        -idct simple -dct fastint"]]})])
  (FunctionDef enc_dec []
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('src_fmt', {[VarSub 1]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('srcfile', {[VarSub 2]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('enc_fmt', {[VarSub 3]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('enc_opt', {[VarSub 4]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('dec_fmt', {[VarSub 5]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('dec_opt', {[VarSub 6]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('encfile', {[DQ [VarSub outdir][LIT_CHARS /][VarSub test][LIT_CHARS .][VarSub enc_fmt]]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('decfile', {[DQ [VarSub outdir][LIT_CHARS /][VarSub test][LIT_CHARS .out.][VarSub dec_fmt]]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('cleanfiles', {[DQ [VarSub cleanfiles][LIT_CHARS " "][VarSub decfile]]})])
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS test]} {[DQ [VarSub 7]]} {[LIT_OTHER "="]} {[LIT_CHARS -keep]})
        (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('cleanfiles', {[DQ [VarSub cleanfiles][LIT_CHARS " "][VarSub encfile]]})])
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('tsrcfile', {[ComSub (Com {[LIT_CHARS target_path]} {[VarSub srcfile]})]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('tencfile', {[ComSub (Com {[LIT_CHARS target_path]} {[VarSub encfile]})]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('tdecfile', {[ComSub (Com {[LIT_CHARS target_path]} {[VarSub decfile]})]})])
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS ffmpeg]} {[LIT_CHARS -f]} {[VarSub src_fmt]} {[VarSub DEC_OPTS]} {[LIT_CHARS -i]} {[VarSub tsrcfile]} {[VarSub ENC_OPTS]} {[VarSub enc_opt]} {[VarSub FLAGS]} {[LIT_CHARS -f]} {[VarSub enc_fmt]} {[LIT_CHARS -y]} {[VarSub tencfile]})
        (Com {[LIT_CHARS return]})
      )
      (Com {[LIT_CHARS do_md5sum]} {[VarSub encfile]})
      (Com {[LIT_CHARS echo]} {[ComSub (Com {[LIT_CHARS wc]} {[LIT_CHARS -c]} {[VarSub encfile]})]})
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS ffmpeg]} {[VarSub 8]} {[VarSub DEC_OPTS]} {[LIT_CHARS -i]} {[VarSub tencfile]} {[VarSub ENC_OPTS]} {[VarSub dec_opt]} {[VarSub FLAGS]} {[LIT_CHARS -f]} {[VarSub dec_fmt]} {[LIT_CHARS -y]} {[VarSub tdecfile]})
        (Com {[LIT_CHARS return]})
      )
      (Com {[LIT_CHARS do_md5sum]} {[VarSub decfile]})
      (Com {[LIT_CHARS tests/tiny_psnr]} {[VarSub srcfile]} {[VarSub decfile]} {[VarSub cmp_unit]} {[VarSub cmp_shift]})
    )
  )
  (FunctionDef lavffatetest []
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('t', {[DQ [VarSub test transform_ops=[VS_UNARY_POUND {[LIT_CHARS lavf-fate-]}]]]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('ref', {[VarSub base] [LIT_CHARS /ref/lavf-fate/] [VarSub t]})])
      (Com {[VarSub base] [LIT_CHARS /lavf-regression.sh]} {[VarSub t]} {[LIT_CHARS lavf-fate]} {[LIT_CHARS tests/vsynth1]} {[DQ [VarSub target_exec]]} {[DQ [VarSub target_path]]} {[DQ [VarSub threads]]} {[DQ [VarSub thread_type]]} {[DQ [VarSub cpuflags]]} {[DQ [VarSub target_samples]]})
    )
  )
  (FunctionDef lavftest []
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('t', {[DQ [VarSub test transform_ops=[VS_UNARY_POUND {[LIT_CHARS lavf-]}]]]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('ref', {[VarSub base] [LIT_CHARS /ref/lavf/] [VarSub t]})])
      (Com {[VarSub base] [LIT_CHARS /lavf-regression.sh]} {[VarSub t]} {[LIT_CHARS lavf]} {[LIT_CHARS tests/vsynth1]} {[DQ [VarSub target_exec]]} {[DQ [VarSub target_path]]} {[DQ [VarSub threads]]} {[DQ [VarSub thread_type]]} {[DQ [VarSub cpuflags]]} {[DQ [VarSub target_samples]]})
    )
  )
  (FunctionDef video_filter []
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('filters', {[VarSub 1]})])
      (Com {[LIT_CHARS shift]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('label', {[VarSub test transform_ops=[VS_UNARY_POUND {[LIT_CHARS filter-]}]]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('raw_src', {[DQ [VarSub target_path][LIT_CHARS "/tests/vsynth1/%02d.pgm"]]})])
      (Com {[LIT_CHARS printf]} {[SQ <LIT_CHARS "%-20s">]} {[VarSub label]})
      (Com {[LIT_CHARS ffmpeg]} {[VarSub DEC_OPTS]} {[LIT_CHARS -f]} {[LIT_CHARS image2]} {[LIT_CHARS -vcodec]} {[LIT_CHARS pgmyuv]} {[LIT_CHARS -i]} {[VarSub raw_src]} {[VarSub FLAGS]} {[VarSub ENC_OPTS]} {[LIT_CHARS -vf]} {[DQ [VarSub filters]]} {[LIT_CHARS -vcodec]} {[LIT_CHARS rawvideo]} {[VarSub *]} {[LIT_CHARS -f]} {[LIT_CHARS nut]} {[LIT_CHARS md5] [LIT_OTHER ":"]})
    )
  )
  (FunctionDef pixfmts []
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('filter', {[VarSub test transform_ops=[VS_UNARY_POUND {[LIT_CHARS filter-pixfmts-]}]]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('filter', {[VarSub filter transform_ops=[VS_UNARY_PERCENT {[LIT_CHARS "_*"]}]]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('filter_args', {[VarSub 1]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('prefilter_chain', {[VarSub 2]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('showfiltfmts', {[DQ [VarSub target_exec][LIT_CHARS " "][VarSub target_path][LIT_CHARS /libavfilter/filtfmts-test]]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('scale_exclude_fmts', {[VarSub outfile] [LIT_CHARS _scale_exclude_fmts]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('scale_in_fmts', {[VarSub outfile] [LIT_CHARS _scale_in_fmts]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('scale_out_fmts', {[VarSub outfile] [LIT_CHARS _scale_out_fmts]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('in_fmts', {[VarSub outfile] [LIT_CHARS _in_fmts]})])
      (Pipeline
        (Com {[VarSub showfiltfmts]} {[LIT_CHARS scale]})
        (Com {[LIT_CHARS awk]} {[LIT_CHARS -F]} {[SQ <LIT_CHARS "[ \\r]">]} {[SQ <LIT_CHARS "/^INPUT/{ fmt=substr($3, 5); print fmt }">]})
        (Com {[LIT_CHARS sort]}
          <
          (FilenameRedirectNode filename={[VarSub scale_in_fmts]} <REDIR_GREAT ">"> 1),
          >
        )
      )
      (Pipeline
        (Com {[VarSub showfiltfmts]} {[LIT_CHARS scale]})
        (Com {[LIT_CHARS awk]} {[LIT_CHARS -F]} {[SQ <LIT_CHARS "[ \\r]">]} {[SQ <LIT_CHARS "/^OUTPUT/{ fmt=substr($3, 5); print fmt }">]})
        (Com {[LIT_CHARS sort]}
          <
          (FilenameRedirectNode filename={[VarSub scale_out_fmts]} <REDIR_GREAT ">"> 1),
          >
        )
      )
      (Com {[LIT_CHARS comm]} {[LIT_CHARS -12]} {[VarSub scale_in_fmts]} {[VarSub scale_out_fmts]}
        <
        (FilenameRedirectNode filename={[VarSub scale_exclude_fmts]} <REDIR_GREAT ">"> 1),
        >
      )
      (Pipeline
        (Com {[VarSub showfiltfmts]} {[VarSub filter]})
        (Com {[LIT_CHARS awk]} {[LIT_CHARS -F]} {[SQ <LIT_CHARS "[ \\r]">]} {[SQ <LIT_CHARS "/^INPUT/{ fmt=substr($3, 5); print fmt }">]})
        (Com {[LIT_CHARS sort]}
          <
          (FilenameRedirectNode filename={[VarSub in_fmts]} <REDIR_GREAT ">"> 1),
          >
        )
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('pix_fmts', {[ComSub (Com {[LIT_CHARS comm]} {[LIT_CHARS -12]} {[VarSub scale_exclude_fmts]} {[VarSub in_fmts]})]})])
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('outertest', {[VarSub test]})])
      (For pix_fmt [{[VarSub pix_fmts]}])
        (List
          (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('test', {[VarSub pix_fmt]})])
          (Com {[LIT_CHARS video_filter]} {[DQ [VarSub prefilter_chain][LIT_CHARS "format="][VarSub pix_fmt][LIT_CHARS ","][VarSub filter][LIT_CHARS "="][VarSub filter_args]]} {[LIT_CHARS -pix_fmt]} {[VarSub pix_fmt]})
        )
      )
      (Com {[LIT_CHARS rm]} {[VarSub in_fmts]} {[VarSub scale_in_fmts]} {[VarSub scale_out_fmts]} {[VarSub scale_exclude_fmts]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('test', {[VarSub outertest]})])
    )
  )
  (Com {[LIT_CHARS mkdir]} {[LIT_CHARS -p]} {[DQ [VarSub outdir]]})
  (Com {[LIT_CHARS set]} {[LIT_CHARS -f]})
  (Com {[LIT_CHARS exec]}
    <
    (DescriptorRedirectNode target={[LIT_CHARS 2]} <REDIR_GREATAND "3>&"> 3),
    >
  )
  (Com {[LIT_CHARS eval]} {[VarSub command]}
    <
    (FilenameRedirectNode filename={[DQ [VarSub outfile]]} <REDIR_GREAT ">"> 1),
    (FilenameRedirectNode filename={[VarSub errfile]} <REDIR_GREAT "2>"> 2),
    >
  )
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('err', {[VarSub ?]})])
  (If
    (Com {[LIT_OTHER "["]} {[VarSub err]} {[LIT_CHARS -gt]} {[LIT_CHARS 128]} {[LIT_OTHER "]"]})
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('sig', {[ComSub (Com redirects=[(FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2)]{[LIT_CHARS kill]} {[LIT_CHARS -l]} {[VarSub err]})]})])
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS test]} {[DQ [VarSub sig]]} {[LIT_OTHER "="]} {[DQ [VarSub sig transform_ops=[VS_UNARY_PERCENT {[LIT_CHARS "[!A-Za-z]*"]}]]]})
        (Com {[LIT_CHARS unset]} {[LIT_CHARS sig]})
      )
    )
  )
  (If
    (AndOr OP_OR_IF
      (Com {[LIT_CHARS test]} {[LIT_CHARS -e]} {[DQ [VarSub ref]]})
      (Com {[LIT_CHARS test]} {[VarSub cmp]} {[LIT_OTHER "="]} {[DQ [LIT_CHARS oneline]]})
    )
    (List
      (Case to_match={[VarSub cmp]}, pat_word_list=[[{[LIT_CHARS diff]}], [{[LIT_CHARS rawdiff]}], [{[LIT_CHARS oneoff]}], [{[LIT_CHARS stddev]}], [{[LIT_CHARS oneline]}], [{[LIT_CHARS null]}]]
        (Com {[LIT_CHARS diff]} {[LIT_CHARS -u]} {[LIT_CHARS -b]} {[DQ [VarSub ref]]} {[DQ [VarSub outfile]]}
          <
          (FilenameRedirectNode filename={[VarSub cmpfile]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS diff]} {[LIT_CHARS -u]} {[DQ [VarSub ref]]} {[DQ [VarSub outfile]]}
          <
          (FilenameRedirectNode filename={[VarSub cmpfile]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS oneoff]} {[DQ [VarSub ref]]} {[DQ [VarSub outfile]]}
          <
          (FilenameRedirectNode filename={[VarSub cmpfile]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS stddev]} {[DQ [VarSub ref]]} {[DQ [VarSub outfile]]}
          <
          (FilenameRedirectNode filename={[VarSub cmpfile]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS oneline]} {[DQ [VarSub ref]]} {[DQ [VarSub outfile]]}
          <
          (FilenameRedirectNode filename={[VarSub cmpfile]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS cat]} {[DQ [VarSub outfile]]}
          <
          (FilenameRedirectNode filename={[VarSub cmpfile]} <REDIR_GREAT ">"> 1),
          >
        )
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('cmperr', {[VarSub ?]})])
      (AndOr OP_AND_IF
        (Com {[LIT_CHARS test]} {[VarSub err]} {[LIT_OTHER "="]} {[LIT_CHARS 0]})
        (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('err', {[VarSub cmperr]})])
      )
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS test]} {[VarSub err]} {[LIT_OTHER "="]} {[LIT_CHARS 0]})
        (Com {[LIT_CHARS cat]} {[VarSub cmpfile]})
      )
    )
    (ElseTrue)
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "reference file '"][VarSub ref][LIT_CHARS "' not found"]]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('err', {[LIT_CHARS 1]})])
    )
  )
  (Com {[LIT_CHARS echo]} {[DQ [VarSub test][LIT_CHARS ":"][VarSub sig test_op=VS_TEST_COLON_HYPHEN {[VarSub err]}][LIT_CHARS ":"][ComSub (Com redirects=[(FilenameRedirectNode filename={[VarSub cmpfile]} <REDIR_LESS "<"> 0)]{[VarSub base64]})][LIT_CHARS ":"][ComSub (Com redirects=[(FilenameRedirectNode filename={[VarSub errfile]} <REDIR_LESS "<"> 0)]{[VarSub base64]})]]}
    <
    (FilenameRedirectNode filename={[VarSub repfile]} <REDIR_GREAT ">"> 1),
    >
  )
  (If
    (AndOr OP_AND_IF
      (Com {[LIT_CHARS test]} {[VarSub err]} {[LIT_OTHER "!"] [LIT_OTHER "="]} {[LIT_CHARS 0]})
      (Com {[LIT_CHARS test]} {[VarSub gen]} {[LIT_OTHER "!"] [LIT_OTHER "="]} {[DQ [LIT_CHARS no]]})
    )
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "GEN     "][VarSub ref]]})
      (Com {[LIT_CHARS cp]} {[LIT_CHARS -f]} {[DQ [VarSub outfile]]} {[DQ [VarSub ref]]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('err', {[VarSub ?]})])
    )
  )
  (If
    (Com {[LIT_CHARS test]} {[VarSub err]} {[LIT_OTHER "="]} {[LIT_CHARS 0]})
    (Com {[LIT_CHARS rm]} {[LIT_CHARS -f]} {[VarSub outfile]} {[VarSub errfile]} {[VarSub cmpfile]} {[VarSub cleanfiles]})
    (Com {[LIT_CHARS test]} {[VarSub gen]} {[LIT_OTHER "="]} {[DQ [LIT_CHARS no]]})
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "Test "][VarSub test][LIT_CHARS " failed. Look at "][VarSub errfile][LIT_CHARS " for details."]]})
      (AndOr OP_AND_IF
        (Com {[LIT_CHARS test]} {[DQ [VarSub V test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS 0]}]]} {[LIT_CHARS -gt]} {[LIT_CHARS 0]})
        (Com {[LIT_CHARS cat]} {[VarSub errfile]})
      )
    )
    (ElseTrue)
    (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "Updating reference failed, possibly no output file was generated."]]})
  )
  (Com {[LIT_CHARS exit]} {[VarSub err]})
)