(List
  (Com {[LIT_OTHER ":"]} {[LIT_CHARS sorttest]} {[LIT_OTHER "["]} {[LIT_CHARS sort]} {[LIT_CHARS test-options]} {[LIT_CHARS ...]} {[LIT_OTHER "]"]})
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('AWK', {[LIT_CHARS awk]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('CC', {[VarSub CC test_op=VS_TEST_COLON_HYPHEN {[VarSub TESTCC test_op=VS_TEST_COLON_HYPHEN {[LIT_CHARS cc]}]}]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('LC_ALL', {[LIT_CHARS C]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('NAWK', {[LIT_CHARS nawk]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('SUM', {[LIT_CHARS sum]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('SORT', {[LIT_CHARS sort]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TMP', {[LIT_CHARS sort.tmp]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=1 words=[{[LIT_CHARS TEST]}, {[LIT_CHARS AWK]}, {[LIT_CHARS CC]}, {[LIT_CHARS LC_ALL]}, {[LIT_CHARS SUM]}, {[LIT_CHARS SORT]}, {[LIT_CHARS TMP]}] bindings=[])
  (Case to_match={[VarSub #]}, pat_word_list=[[{[LIT_CHARS 0]}]]
    (Com {[LIT_CHARS set]} {[VarSub SORT]})
  )
  (AndOr OP_AND_IF
    (Subshell
      (Com {[LIT_CHARS ulimit]} {[LIT_CHARS -n]} {[LIT_CHARS 128]})
    )
    (Com {[LIT_CHARS ulimit]} {[LIT_CHARS -n]} {[LIT_CHARS 128]})
  )
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('SORT', {[VarSub 1]})])
  (Com {[LIT_CHARS shift]})
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('SORT_ARGS', {[DQ [VarSub @]]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('path', {[ComSub (Com {[LIT_CHARS pwd]})] [LIT_OTHER ":"] [VarSub PATH] [LIT_OTHER ":"] [LIT_CHARS /usr/5bin] [LIT_OTHER ":"] [LIT_CHARS /bin] [LIT_OTHER ":"] [LIT_CHARS /usr/bin]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('ifs', {[VarSub IFS test_op=VS_TEST_HYPHEN {[LIT_CHARS "'\n"] [LIT_CHARS "\t '"]}]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('IFS', {[DQ [LIT_CHARS ":"]]})])
  (Com {[LIT_CHARS set]} {[VarSub path]})
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('IFS', {[VarSub ifs]})])
  (For dir do_arg_iter)
    (List
      (Case to_match={[VarSub dir]}, pat_word_list=[[{[DQ ]}]]
        (Com {[LIT_CHARS continue]})
      )
      (Case to_match={[VarSub NAWK]}, pat_word_list=[[{[LIT_OTHER "*"] [LIT_CHARS /] [LIT_OTHER "*"]}], [{[LIT_OTHER "*"]}]]
        (ElseTrue)
        (If
          (Com {[LIT_CHARS test]} {[LIT_CHARS -x]} {[VarSub dir] [LIT_CHARS /] [VarSub NAWK]})
          (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('NAWK', {[VarSub dir] [LIT_CHARS /] [VarSub NAWK]})])
          (ElseTrue)
          (Case to_match={[VarSub AWK]}, pat_word_list=[[{[LIT_OTHER "*"] [LIT_CHARS /] [LIT_OTHER "*"]}], [{[LIT_OTHER "*"]}]]
            (ElseTrue)
            (AndOr OP_AND_IF
              (Com {[LIT_CHARS test]} {[LIT_CHARS -x]} {[VarSub dir] [LIT_CHARS /] [VarSub AWK]})
              (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('AWK', {[VarSub dir] [LIT_CHARS /] [VarSub AWK]})])
            )
          )
        )
      )
      (Case to_match={[VarSub SORT]}, pat_word_list=[[{[LIT_OTHER "*"] [LIT_CHARS /] [LIT_OTHER "*"]}], [{[LIT_OTHER "*"]}]]
        (ElseTrue)
        (AndOr OP_AND_IF
          (Com {[LIT_CHARS test]} {[LIT_CHARS -x]} {[VarSub dir] [LIT_CHARS /] [VarSub SORT]})
          (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('SORT', {[VarSub dir] [LIT_CHARS /] [VarSub SORT]})])
        )
      )
      (Case to_match={[VarSub SUM]}, pat_word_list=[[{[LIT_OTHER "*"] [LIT_CHARS /] [LIT_OTHER "*"]}], [{[LIT_OTHER "*"]}]]
        (ElseTrue)
        (If
          (Com {[LIT_CHARS test]} {[LIT_CHARS -x]} {[VarSub dir] [LIT_CHARS /] [VarSub SUM]})
          (List
            (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('AB', {[SQ <LIT_CHARS "abc\n"> <LIT_CHARS "pdq\n"> <LIT_CHARS xyz>]})])
            (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('BA', {[SQ <LIT_CHARS "xyz\n"> <LIT_CHARS "pdq\n"> <LIT_CHARS abc>]})])
            (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('ab', {[ComSub (Pipeline (Com {[LIT_CHARS echo]} {[DQ [VarSub AB]]}) (Com redirects=[(FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2)]{[VarSub SUM]}) )]})])
            (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('ba', {[ComSub (Pipeline (Com {[LIT_CHARS echo]} {[DQ [VarSub BA]]}) (Com redirects=[(FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2)]{[VarSub SUM]}) )]})])
            (Case to_match={[VarSub ab]}, pat_word_list=[[{[VarSub ba]}], [{[LIT_OTHER "*"]}]]
              (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('SUM', {[VarSub dir] [LIT_CHARS /] [VarSub SUM]})])
              (For old [{[LIT_CHARS -o]}, {[SQ <LIT_CHARS "-o 2">]}, {[LIT_CHARS -s]}, {[LIT_CHARS -xatt]}])
                (List
                  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('ab', {[ComSub (Pipeline (Com {[LIT_CHARS echo]} {[DQ [VarSub AB]]}) (Com redirects=[(FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2)]{[VarSub dir] [LIT_CHARS /] [VarSub SUM]} {[VarSub old]}) )]})])
                  (Case to_match={[VarSub ab]}, pat_word_list=[[{[LIT_OTHER "?"] [LIT_OTHER "*"]}]]
                    (List
                      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('ba', {[ComSub (Pipeline (Com {[LIT_CHARS echo]} {[DQ [VarSub BA]]}) (Com redirects=[(FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2)]{[VarSub dir] [LIT_CHARS /] [VarSub SUM]} {[VarSub old]}) )]})])
                      (Case to_match={[VarSub ab]}, pat_word_list=[[{[VarSub ba]}]]
                        (List
                          (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('SUM', {[DQ [VarSub dir][LIT_CHARS /][VarSub SUM][LIT_CHARS " "][VarSub old]]})])
                          (Com {[LIT_CHARS break]})
                        )
                      )
                    )
                  )
                )
              )
            )
          )
        )
      )
    )
  )
  (Case to_match={[VarSub NAWK]}, pat_word_list=[[{[LIT_OTHER "*"] [LIT_CHARS /] [LIT_OTHER "*"]}]]
    (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('AWK', {[VarSub NAWK]})])
  )
  (Com {[LIT_CHARS echo]} {[LIT_CHARS pathname]} {[LIT_CHARS and]} {[LIT_CHARS options]} {[LIT_CHARS of]} {[LIT_CHARS item]} {[LIT_CHARS under]} {[LIT_CHARS test]})
  (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "\t"][VarSub SORT][LIT_CHARS "\t"][VarSub SORT_ARGS]]})
  (Com {[LIT_CHARS echo]})
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('SORT', {[DQ [VarSub SORT][LIT_CHARS " "][VarSub SORT_ARGS]]})])
  (Com {[LIT_CHARS trap]} {[DQ [LIT_CHARS "cd ..; rm -rf "][VarSub TMP][LIT_CHARS "; exit"]]} {[LIT_CHARS 0]} {[LIT_CHARS 1]} {[LIT_CHARS 2]} {[LIT_CHARS 13]} {[LIT_CHARS 15]})
  (Com {[LIT_CHARS rm]} {[LIT_CHARS -rf]} {[VarSub TMP]})
  (If
    (Com {[LIT_CHARS mkdir]} {[VarSub TMP]})
    (Com {[LIT_CHARS cd]} {[VarSub TMP]})
    (ElseTrue)
    (List
      (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "mkdir "][VarSub TMP][LIT_CHARS " FAILED"]]})
      (Com {[LIT_CHARS exit]} {[LIT_CHARS 1]})
    )
  )
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('o', {[LIT_OTHER ":"]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('O', {[LIT_OTHER ":"]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('g', {[LIT_OTHER ":"]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('k', {[LIT_OTHER ":"]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('M', {[LIT_OTHER ":"]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('s', {[LIT_OTHER ":"]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('S', {[LIT_OTHER ":"]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('x', {[LIT_OTHER ":"]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('X', {[LIT_OTHER ":"]})])
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('y', {[SQ ]})])
  (Com {[LIT_CHARS echo]} {[LIT_CHARS obsolescent]} {[LIT_CHARS and]} {[LIT_CHARS nonstandard]} {[LIT_CHARS features]} {[LIT_CHARS recognized] [LIT_COMMA ","]} {[LIT_CHARS if]} {[LIT_CHARS any]})
  (If
    (Com {[VarSub SORT]} {[LIT_OTHER "+"] [LIT_CHARS 0]}
      <
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
      >
    )
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('o', {[SQ ]})])
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "\t+1 -2">]})
    )
  )
  (If
    (Com {[VarSub SORT]} {[LIT_CHARS /dev/null]} {[LIT_CHARS -o]} {[LIT_CHARS xx]}
      <
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
      >
    )
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('O', {[SQ ]})])
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "\tdisplaced -o">]})
    )
  )
  (If
    (Com {[VarSub SORT]} {[LIT_CHARS -g]}
      <
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
      >
    )
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('g', {[SQ ]})])
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "\t-g g-format numbers">]})
    )
  )
  (If
    (Com {[LIT_CHARS test]} {[LIT_CHARS Xcx.by.az]} {[LIT_OTHER "="]} {[LIT_CHARS X] [ComSub (Pipeline (Com {[LIT_CHARS echo]} {[LIT_CHARS by.cx.az]}) (Com redirects=[(FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2)]{[VarSub SORT]} {[LIT_CHARS -R3]} {[LIT_CHARS -k.2.1]}) )]})
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('k', {[SQ ]})])
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "\t-Rr -k.p:l fixed length records">]})
    )
  )
  (If
    (Com {[VarSub SORT]} {[LIT_CHARS -M]}
      <
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
      >
    )
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('M', {[SQ ]})])
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "\t-M months">]})
    )
  )
  (If
    (Com {[VarSub SORT]} {[LIT_CHARS -s]}
      <
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
      >
    )
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('s', {[SQ ]})])
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "\t-s stable">]})
    )
  )
  (If
    (Com {[VarSub SORT]} {[LIT_CHARS -S]}
      <
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
      >
    )
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('S', {[SQ ]})])
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "\t-S unstable">]})
    )
  )
  (If
    (Com {[VarSub SORT]} {[LIT_CHARS -x]} {[LIT_CHARS default]}
      <
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
      >
    )
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('x', {[SQ ]})])
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "\t-x method">]})
    )
  )
  (If
    (Com {[LIT_CHARS test]} {[LIT_CHARS Xok]} {[LIT_OTHER "="]} {[LIT_CHARS X] [ComSub (Com redirects=[(FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2)]{[VarSub SORT]} {[LIT_CHARS -Xtest]})]})
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('X', {[SQ ]})])
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "\t-Xread ensures read instead of memory map">]})
    )
  )
  (If
    (Com {[VarSub SORT]} {[LIT_CHARS -y4096]}
      <
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
      >
    )
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('y', {[LIT_CHARS -y4096]})])
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "\t-y space">]})
    )
  )
  (If
    (Com {[VarSub SORT]} {[LIT_CHARS -z10000]}
      <
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
      >
    )
    (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "\t-z recsize (not exercised)">]})
  )
  (If
    (Com {[VarSub SORT]} {[LIT_CHARS -T.]}
      <
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
      >
    )
    (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS "\t-T tempdir (not exercised)">]})
  )
  (Com {[LIT_CHARS cat]}
    <
    (FilenameRedirectNode filename={[LIT_CHARS xsort]} <REDIR_GREAT ">"> 1),
    (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "\n"][LIT_CHARS "\tcase "][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "1 in\n"][LIT_CHARS "\t-)\tF=-; shift ;;\n"][LIT_CHARS "\t*)\tF=in ;;\n"][LIT_CHARS "\tesac\n"][LIT_CHARS "\tX="][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "1; shift\n"][LIT_CHARS "\n"][LIT_CHARS "\tif "][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "SORT "][RIGHT_D_QUOTE "\""][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "@"][RIGHT_D_QUOTE "\""][LIT_CHARS " "][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "F >xx  &&  "][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "SORT -c "][RIGHT_D_QUOTE "\""][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "@"][RIGHT_D_QUOTE "\""][LIT_CHARS " xx 2>/dev/null\n"][LIT_CHARS "\tthen \n"][LIT_CHARS "\t\tif test -f out\n"][LIT_CHARS "\t\tthen\n"][LIT_CHARS "\t\t\tcmp -s xx out >/dev/null && exit 0\n"][LIT_CHARS "\t\t\techo "][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS TEST][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "X comparison FAILED\n"][LIT_CHARS "\t\telse\n"][LIT_CHARS "\t\t\ttest "][RIGHT_D_QUOTE "\""][\ LIT_ESCAPED_CHAR "\\`"][VarSub SUM][LIT_CHARS " <in"][\ LIT_ESCAPED_CHAR "\\`"][RIGHT_D_QUOTE "\""][LIT_CHARS " = "][RIGHT_D_QUOTE "\""][\ LIT_ESCAPED_CHAR "\\`"][VarSub SUM][LIT_CHARS " <xx"][\ LIT_ESCAPED_CHAR "\\`"][RIGHT_D_QUOTE "\""][LIT_CHARS " && exit 0\n"][LIT_CHARS "\t\t\techo "][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS TEST][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "X checksum FAILED\n"][LIT_CHARS "\t\tfi\n"][LIT_CHARS "\telse\n"][LIT_CHARS "\t\techo "][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS TEST][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "X FAILED\n"][LIT_CHARS "\tfi\n"][LIT_CHARS "\texit 1\n"]]} <REDIR_DLESS "<<"> 0),
    >
  )
  (Com {[LIT_CHARS chmod]} {[LIT_OTHER "+"] [LIT_CHARS x]} {[LIT_CHARS xsort]})
  (Com {[LIT_CHARS cat]}
    <
    (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "error=0 warning=0 works=0\n"][VarSub SORT][LIT_CHARS " "][RIGHT_D_QUOTE "\""][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "@"][RIGHT_D_QUOTE "\""][LIT_CHARS " 2>out <in >in1 || error=1\n"][LIT_CHARS "test -s out && warning=1\n"][LIT_CHARS "test -s in1 && works=1\n"][LIT_CHARS "case "][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS error][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS warning][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "works in\n"][LIT_CHARS "000)\techo "][RIGHT_D_QUOTE "\""][LIT_CHARS "\t"][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "@"][RIGHT_D_QUOTE "\""][LIT_CHARS " does not indicate trouble, but does not sort ;;\n"][LIT_CHARS "001)\techo "][RIGHT_D_QUOTE "\""][LIT_CHARS "\t"][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "@"][RIGHT_D_QUOTE "\""][LIT_CHARS " does not indicate trouble ;;\n"][LIT_CHARS "010)\techo "][RIGHT_D_QUOTE "\""][LIT_CHARS "\t"][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "@"][RIGHT_D_QUOTE "\""][LIT_CHARS " warns, does not sort, and yields exit status zero ;;\n"][LIT_CHARS "011)\techo "][RIGHT_D_QUOTE "\""][LIT_CHARS "\t"][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "@"][RIGHT_D_QUOTE "\""][LIT_CHARS " warns and continues ;;\n"][LIT_CHARS "100)\techo "][RIGHT_D_QUOTE "\""][LIT_CHARS "\t"][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "@"][RIGHT_D_QUOTE "\""][LIT_CHARS " yields nonzero exit status and does not sort ;;\n"][LIT_CHARS "101)\techo "][RIGHT_D_QUOTE "\""][LIT_CHARS "\t"][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "@"][RIGHT_D_QUOTE "\""][LIT_CHARS " yields nonzero exit status, but sorts ;;\n"][LIT_CHARS "111)\techo "][RIGHT_D_QUOTE "\""][LIT_CHARS "\t"][\ LIT_ESCAPED_CHAR "\\$"][LIT_CHARS "@"][RIGHT_D_QUOTE "\""][LIT_CHARS " warns and yields nonzero exit status, but sorts\n"][LIT_CHARS "esac\n"]]} <REDIR_DLESS "<<"> 0),
    (FilenameRedirectNode filename={[LIT_CHARS ysort]} <REDIR_GREAT ">"> 1),
    >
  )
  (Com {[LIT_CHARS chmod]} {[LIT_OTHER "+"] [LIT_CHARS x]} {[LIT_CHARS ysort]})
  (Com {[LIT_CHARS cat]}
    <
    (FilenameRedirectNode filename={[LIT_CHARS linecount]} <REDIR_GREAT ">"> 1),
    (HereDocRedirectNode here_end='!' do_expansion=False body_word={[LIT_CHARS "$AWK 'END{ if(NR!='$3') print \"'$TEST$1' FAILED\" }' $2\n"]} <REDIR_DLESS "<<"> 0),
    >
  )
  (Com {[LIT_CHARS chmod]} {[LIT_OTHER "+"] [LIT_CHARS x]} {[LIT_CHARS linecount]})
  (Case to_match={[VarSub S]}, pat_word_list=[[{[SQ ]}]]
    (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('SORT', {[DQ [VarSub SORT][LIT_CHARS " -S"]]})])
  )
  (Com {[LIT_CHARS echo]})
  (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "behavior in questionable cases (other than message and exit)"]]})
  (Com {[LIT_CHARS echo]} {[LIT_CHARS hi]}
    <
    (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
    >
  )
  (Com {[LIT_CHARS rm]} {[LIT_CHARS -f]} {[LIT_CHARS nosuchfile]})
  (Com {[LIT_CHARS ./ysort]} {[LIT_CHARS nosuchfile]})
  (If
    (Com {[LIT_CHARS test]} {[LIT_OTHER "!"]} {[LIT_CHARS -f]} {[LIT_CHARS unwritablefile]})
    (List
      (Com {[LIT_CHARS echo]} {[LIT_CHARS x]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS unwritablefile]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[LIT_CHARS chmod]} {[LIT_CHARS 0]} {[LIT_CHARS unwritablefile]})
    )
  )
  (Com {[LIT_CHARS ./ysort]} {[LIT_CHARS -o]} {[LIT_CHARS unwritablefile]}
    <
    (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
    >
  )
  (Pipeline
    (Com {[LIT_CHARS cat]} {[LIT_CHARS in]})
    (Com {[LIT_CHARS ./ysort]} {[LIT_CHARS -]} {[LIT_CHARS -]})
  )
  (Com {[LIT_CHARS ./ysort]} {[LIT_CHARS --]} {[LIT_CHARS in]})
  (For i [{[LIT_CHARS -k]}, {[LIT_CHARS -k0]}, {[LIT_CHARS -k-1]}, {[LIT_CHARS -k1] [LIT_COMMA ","]}, {[LIT_CHARS -kb]}, {[LIT_CHARS -k1] [LIT_COMMA ","] [LIT_CHARS 2u]}, {[LIT_CHARS -t]}, {[LIT_CHARS -o]}])
    (Com {[LIT_CHARS ./ysort]} {[VarSub i]})
  )
  (Com {[VarSub g]} {[LIT_CHARS ./ysort]} {[LIT_CHARS -n]} {[LIT_CHARS -g]})
  (Com {[VarSub M]} {[LIT_CHARS ./ysort]} {[LIT_CHARS -n]} {[LIT_CHARS -M]})
  (Com {[LIT_CHARS ./ysort]} {[LIT_CHARS -d]} {[LIT_CHARS -i]})
  (Com {[LIT_CHARS ./ysort]} {[LIT_CHARS -n]} {[LIT_CHARS -i]})
  (Com {[LIT_CHARS ./ysort]} {[LIT_CHARS -c]} {[LIT_CHARS in]} {[LIT_CHARS in]})
  (Com {[LIT_CHARS ./ysort]} {[LIT_CHARS -t.]} {[LIT_CHARS -t] [LIT_OTHER ":"]})
  (For i [{[LIT_CHARS -a]}, {[LIT_CHARS -e]}, {[LIT_CHARS -h]}, {[LIT_CHARS -j]}, {[LIT_CHARS -p]}, {[LIT_CHARS -q]}, {[LIT_CHARS -v]}, {[LIT_CHARS -w]}, {[LIT_CHARS -x]}, {[LIT_CHARS -0]}, {[LIT_CHARS -1]}, {[LIT_CHARS -2]}])
    (Com {[LIT_CHARS ./ysort]} {[VarSub i]})
  )
  (AndOr OP_AND_IF
    (Com {[VarSub g]} {[LIT_CHARS false]})
    (Com {[LIT_CHARS ./ysort]} {[LIT_CHARS -g]})
  )
  (AndOr OP_AND_IF
    (Com {[VarSub s]} {[LIT_CHARS false]})
    (Com {[LIT_CHARS ./ysort]} {[LIT_CHARS -s]})
  )
  (AndOr OP_AND_IF
    (Com {[VarSub z]} {[LIT_CHARS false]})
    (Com {[LIT_CHARS ./ysort]} {[LIT_CHARS -z]})
  )
  (Case to_match={[DQ [VarSub y]]}, pat_word_list=[[{[DQ ]}]]
    (Com {[LIT_CHARS ./ysort]} {[LIT_CHARS -y]})
  )
  (Com {[LIT_CHARS ./ysort]} {[LIT_CHARS -k1] [LIT_COMMA ","] [LIT_CHARS 1]} {[LIT_CHARS -f]})
  (Com {[LIT_CHARS cat]}
    <
    (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
    (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "A\tb\n"][LIT_CHARS "a\tbc\n"][LIT_CHARS "a\tBd\n"][LIT_CHARS "B\n"]]} <REDIR_DLESS "<<"> 0),
    >
  )
  (Com {[LIT_CHARS cat]}
    <
    (FilenameRedirectNode filename={[LIT_CHARS in1]} <REDIR_GREAT ">"> 1),
    (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "A\tb\n"][LIT_CHARS "B\n"][LIT_CHARS "a\tbc\n"][LIT_CHARS "a\tBd\n"]]} <REDIR_DLESS "<<"> 0),
    >
  )
  (Com {[LIT_CHARS cat]}
    <
    (FilenameRedirectNode filename={[LIT_CHARS in2]} <REDIR_GREAT ">"> 1),
    (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "A\tb\n"][LIT_CHARS "B\n"][LIT_CHARS "a\tBd\n"][LIT_CHARS "a\tbc\n"]]} <REDIR_DLESS "<<"> 0),
    >
  )
  (If
    (Com {[VarSub SORT]} {[LIT_CHARS -k1] [LIT_COMMA ","] [LIT_CHARS 1]} {[LIT_CHARS -f]} {[LIT_CHARS -k2] [LIT_COMMA ","] [LIT_CHARS 2]}
      <
      (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_LESS "<"> 0),
      (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
      >
    )
    (List
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('opt', {[DQ [LIT_CHARS "-k1,1 -f -k2,2 :"]]})])
      (If
        (Com {[LIT_CHARS cmp]} {[LIT_CHARS -s]} {[LIT_CHARS out]} {[LIT_CHARS in]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "\t"][VarSub opt][LIT_CHARS " -f applies to fields 1 and 2"]]})
        (Com {[LIT_CHARS cmp]} {[LIT_CHARS -s]} {[LIT_CHARS out]} {[LIT_CHARS in1]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "\t"][VarSub opt][LIT_CHARS " -f applies to field 2 only"]]})
        (Com {[LIT_CHARS cmp]} {[LIT_CHARS -s]} {[LIT_CHARS out]} {[LIT_CHARS in1]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "\t"][VarSub opt][LIT_CHARS " -f ineffectual"]]})
        (Com {[LIT_CHARS cmp]} {[LIT_CHARS -s]} {[LIT_CHARS out]} {[LIT_CHARS /dev/null]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "\t"][VarSub opt][LIT_CHARS " exit status zero, but no output"]]})
        (ElseTrue)
        (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "\t"][VarSub opt][LIT_CHARS " inexplicable"]]})
      )
    )
  )
  (Com {[LIT_CHARS echo]})
  (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "generating large data files for tests that follow (long)"]]})
  (Pipeline
    (Com {[VarSub AWK]} {[SQ <LIT_CHARS "BEGIN { for(i=0; i<100000; i++) print rand() }">]}
      <
      (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
      >
    )
    (Com {[LIT_CHARS grep]} {[LIT_CHARS -v]} {[LIT_CHARS e]}
      <
      (FilenameRedirectNode filename={[LIT_CHARS 14.in]} <REDIR_GREAT ">"> 1),
      >
    )
  )
  (Com {[VarSub AWK]} {[SQ <LIT_CHARS "BEGIN {\n"> <LIT_CHARS "\tx = \"xxxxxxxxxx\" \n"> <LIT_CHARS "\tx = x x x x x x x x\n"> <LIT_CHARS "\tfor(i=0; i<8000; i++) print rand(), x }">]}
    <
    (FilenameRedirectNode filename={[LIT_CHARS 15.in]} <REDIR_GREAT ">"> 1),
    (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
    >
  )
  (Com {[LIT_CHARS rm]} {[LIT_CHARS -f]} {[LIT_CHARS in]} {[LIT_CHARS out]})
  (Com {[LIT_CHARS echo]})
  (Com {[LIT_CHARS echo]} {[LIT_CHARS test]} {[LIT_CHARS numbers]} {[LIT_CHARS denote]} {[LIT_CHARS progress] [LIT_COMMA ","]} {[LIT_CHARS not]} {[LIT_CHARS trouble]})
  (Case to_match={[VarSub x]}, pat_word_list=[[{[SQ ]}], [{[LIT_OTHER "*"]}]]
    (Com {[LIT_CHARS set]} {[ComSub (Pipeline (Com redirects=[(FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0)]{[VarSub SORT]} {[LIT_CHARS --list]}) (Com {[LIT_CHARS sed]} {[SQ <LIT_CHARS "s/[ \t].*//">]}) )]})
    (Com {[LIT_CHARS set]} {[SQ ]})
  )
  (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('COMMAND', {[VarSub SORT]})])
  (While
    (Com {[LIT_OTHER ":"]})
    (List
      (Case to_match={[VarSub #]}, pat_word_list=[[{[LIT_CHARS 0]}]]
        (Com {[LIT_CHARS break]})
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('METHOD', {[VarSub 1]})])
      (Com {[LIT_CHARS shift]})
      (Case to_match={[VarSub METHOD]}, pat_word_list=[[{[LIT_CHARS check]}, {[LIT_CHARS copy]}, {[LIT_CHARS verify]}], [{[SQ ]}], [{[LIT_OTHER "*"]}]]
        (Com {[LIT_CHARS continue]})
        (Com {[LIT_CHARS echo]})
        (List
          (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('SORT', {[DQ [VarSub COMMAND][LIT_CHARS " -x "][VarSub METHOD]]})])
          (Com {[LIT_CHARS echo]})
          (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "testing the "][VarSub METHOD][LIT_CHARS " method"]]})
          (Com {[LIT_CHARS echo]})
        )
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 01]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "-c status, checksum"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "b\n"][LIT_CHARS "a\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS rm]} {[LIT_CHARS -f]} {[LIT_CHARS out]} {[LIT_CHARS -o]})
      (AndOr OP_AND_IF
        (Com {[VarSub SORT]} {[LIT_CHARS -c]} {[LIT_CHARS in]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS A]} {[LIT_CHARS FAILED]})
      )
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS B]})
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS B]} {[VarSub SUM]} {[LIT_CHARS is]} {[LIT_CHARS probably]} {[LIT_CHARS unsuitable]} {[LIT_CHARS -]} {[LIT_CHARS see]} {[LIT_CHARS comments]})
      )
      (AndOr OP_OR_IF
        (Com {[VarSub o]} {[VarSub SORT]} {[LIT_CHARS -o]} {[LIT_CHARS in]} {[LIT_OTHER "+"] [LIT_CHARS 0]} {[LIT_CHARS in]})
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS C]} {[LIT_CHARS FAILED]})
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 02]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "output from -c"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "x\n"][LIT_CHARS "y\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (AndOr OP_AND_IF
        (Com {[VarSub SORT]} {[LIT_CHARS -cr]} {[LIT_CHARS in]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
          (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT "2>"> 2),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS A]} {[LIT_CHARS FAILED]})
      )
      (AndOr OP_AND_IF
        (Com {[LIT_CHARS test]} {[LIT_CHARS -s]} {[LIT_CHARS out]})
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS B]} {[LIT_CHARS FAILED]})
      )
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS test]} {[LIT_CHARS -s]} {[LIT_CHARS xx]})
        (Com {[LIT_CHARS echo]} {[LIT_CHARS option]} {[LIT_CHARS -c]} {[LIT_CHARS is]} {[LIT_CHARS quiet]} {[DQ [LIT_CHARS "(legal, not classical)"]]})
      )
      (AndOr OP_OR_IF
        (Com {[VarSub SORT]} {[LIT_CHARS -c]} {[LIT_CHARS /dev/null]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT "2>"> 2),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS C]} {[LIT_CHARS FAILED]})
      )
      (AndOr OP_AND_IF
        (Com {[LIT_CHARS test]} {[LIT_CHARS -s]} {[LIT_CHARS xx]})
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS D]} {[LIT_CHARS FAILED]})
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 03]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS -n]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "-99.0\n"][LIT_CHARS "-99.1\n"][LIT_CHARS "-.0002\n"][LIT_CHARS "  -10\n"][LIT_CHARS "2\n"][LIT_CHARS "2.0x\n"][LIT_CHARS "2.0.1\n"][LIT_CHARS "0010.000000000000000000000000000000000001\n"][LIT_CHARS "10\n"][LIT_CHARS "3x\n"][LIT_CHARS "x\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "-99.1\n"][LIT_CHARS "-99.0\n"][LIT_CHARS "  -10\n"][LIT_CHARS "-.0002\n"][LIT_CHARS "x\n"][LIT_CHARS "2\n"][LIT_CHARS "2.0.1\n"][LIT_CHARS "2.0x\n"][LIT_CHARS "3x\n"][LIT_CHARS "10\n"][LIT_CHARS "0010.000000000000000000000000000000000001\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS ./xsort]} {[DQ ]} {[LIT_CHARS -n]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 04]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "-b without fields, piping, -c status return"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "  b\n"][LIT_CHARS " a\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cp]} {[LIT_CHARS in]} {[LIT_CHARS out]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_CHARS -b]})
      (Pipeline
        (Com {[LIT_CHARS cat]} {[LIT_CHARS in]})
        (Com {[VarSub SORT]})
        (Com {[LIT_CHARS cat]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
          >
        )
      )
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS cmp]} {[LIT_CHARS -s]} {[LIT_CHARS xx]} {[LIT_CHARS out]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS B]} {[LIT_CHARS FAILED]})
      )
      (AndOr OP_AND_IF
        (Pipeline
          (Com {[VarSub SORT]} {[LIT_CHARS in]})
          (Com {[VarSub SORT]} {[LIT_CHARS -cr]}
            <
            (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
            >
          )
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS C]} {[LIT_CHARS FAILED]})
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 05]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "fields, reverse fields, -c status return"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "b b p\n"][LIT_CHARS "a b q\n"][LIT_CHARS "x a\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "x a\n"][LIT_CHARS "a b q\n"][LIT_CHARS "b b p\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub o]} {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_OTHER "+"] [LIT_CHARS 1]} {[LIT_CHARS -2]})
      (Com {[VarSub o]} {[LIT_CHARS ./xsort]} {[LIT_CHARS B]} {[LIT_OTHER "+"] [LIT_CHARS 1]} {[LIT_CHARS -2]} {[LIT_OTHER "+"] [LIT_CHARS 2r]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS C]} {[LIT_CHARS -k]} {[LIT_CHARS 2] [LIT_COMMA ","] [LIT_CHARS 2]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS D]} {[LIT_CHARS -k]} {[LIT_CHARS 2] [LIT_COMMA ","] [LIT_CHARS 2]} {[LIT_CHARS -k]} {[LIT_CHARS 3r]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS E]} {[LIT_CHARS -k]} {[LIT_CHARS 2] [LIT_COMMA ","] [LIT_CHARS 2.0]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS F]} {[LIT_CHARS -k]} {[LIT_CHARS 2] [LIT_COMMA ","] [LIT_CHARS 2]} {[LIT_CHARS -k]} {[LIT_CHARS 1] [LIT_COMMA ","] [LIT_CHARS 1]} {[LIT_CHARS -k]} {[LIT_CHARS 3]})
      (AndOr OP_AND_IF
        (Com {[VarSub SORT]} {[LIT_CHARS -c]} {[LIT_CHARS -k]} {[LIT_CHARS 2]} {[LIT_CHARS in]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
          >
        )
        (Com {[VarSub TEST] [LIT_CHARS G]} {[LIT_CHARS FAILED]})
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 06]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS -t]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "a:\n"][LIT_CHARS "a!\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cp]} {[LIT_CHARS in]} {[LIT_CHARS out]})
      (Com {[VarSub o]} {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_CHARS -t]} {[LIT_OTHER ":"]} {[LIT_CHARS -r]} {[LIT_OTHER "+"] [LIT_CHARS 0]})
      (Com {[VarSub o]} {[LIT_CHARS ./xsort]} {[LIT_CHARS B]} {[LIT_CHARS -t]} {[LIT_OTHER ":"]} {[LIT_OTHER "+"] [LIT_CHARS 0]} {[LIT_CHARS -1]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS C]} {[LIT_CHARS -t]} {[LIT_OTHER ":"]} {[LIT_CHARS -r]} {[LIT_CHARS -k]} {[LIT_CHARS 1]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS D]} {[LIT_CHARS -t]} {[LIT_OTHER ":"]} {[LIT_CHARS -k]} {[LIT_CHARS 1] [LIT_COMMA ","] [LIT_CHARS 1]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 07]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "-t, character positions in fields"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS ": ab\n"][LIT_CHARS ":bac\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS ":bac\n"][LIT_CHARS ": ab\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub o]} {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_CHARS -b]} {[LIT_CHARS -t] [LIT_OTHER ":"]} {[LIT_OTHER "+"] [LIT_CHARS 1.1]})
      (Com {[VarSub o]} {[LIT_CHARS ./xsort]} {[LIT_CHARS B]} {[LIT_CHARS -t] [LIT_OTHER ":"]} {[LIT_OTHER "+"] [LIT_CHARS 1.1r]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS C]} {[LIT_CHARS -b]} {[LIT_CHARS -t] [LIT_OTHER ":"]} {[LIT_CHARS -k]} {[LIT_CHARS 2.2]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS D]} {[LIT_CHARS -t] [LIT_OTHER ":"]} {[LIT_CHARS -k]} {[LIT_CHARS 2.2r]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 08]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "space and tab as -t characters"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS " b c\n"][LIT_CHARS " b\tc\n"][LIT_CHARS "\tb c\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cp]} {[LIT_CHARS in]} {[LIT_CHARS out]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_CHARS -t]} {[SQ <LIT_CHARS " ">]} {[LIT_CHARS -k2] [LIT_COMMA ","] [LIT_CHARS 2]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS B]} {[LIT_CHARS -t]} {[SQ <LIT_CHARS " ">]} {[LIT_CHARS -k2.1] [LIT_COMMA ","] [LIT_CHARS 2.0]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS " b c\n"][LIT_CHARS "\tb c\n"][LIT_CHARS " b\tc\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS C]} {[LIT_CHARS -t]} {[SQ <LIT_CHARS "\t">]} {[LIT_CHARS -k2] [LIT_COMMA ","] [LIT_CHARS 2]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS D]} {[LIT_CHARS -t]} {[SQ <LIT_CHARS "\t">]} {[LIT_CHARS -k2.1] [LIT_COMMA ","] [LIT_CHARS 2.0]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS " b\tc\n"][LIT_CHARS "\tb c\n"][LIT_CHARS " b c\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS E]} {[LIT_CHARS -k2]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "\tb c\n"][LIT_CHARS " b\tc\n"][LIT_CHARS " b c\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS F]} {[LIT_CHARS -k2b]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 09]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "alphabetic as -t character"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "zXa\n"][LIT_CHARS "yXa\n"][LIT_CHARS "zXb\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cp]} {[LIT_CHARS in]} {[LIT_CHARS out]})
      (Com {[LIT_CHARS ./xsort]} {[DQ ]} {[LIT_CHARS -tX]} {[LIT_CHARS -k2]} {[LIT_CHARS -k1r] [LIT_COMMA ","] [LIT_CHARS 1]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 10]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS -m]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "a\n"][LIT_CHARS "ab\n"][LIT_CHARS "ab\n"][LIT_CHARS "bc\n"][LIT_CHARS "ca\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in1]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "Z\n"][LIT_CHARS "a\n"][LIT_CHARS "aa\n"][LIT_CHARS "ac\n"][LIT_CHARS "c\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "Z\n"][LIT_CHARS "a\n"][LIT_CHARS "a\n"][LIT_CHARS "aa\n"][LIT_CHARS "ab\n"][LIT_CHARS "ab\n"][LIT_CHARS "ac\n"][LIT_CHARS "bc\n"][LIT_CHARS "c\n"][LIT_CHARS "ca\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub SORT]} {[LIT_CHARS -m]} {[LIT_CHARS in]} {[LIT_CHARS in1]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
        >
      )
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS cmp]} {[LIT_CHARS -s]} {[LIT_CHARS xx]} {[LIT_CHARS out]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS A]} {[LIT_CHARS FAILED]})
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 11]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "multiple files, -o overwites input, -m, -mu"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "a\n"][LIT_CHARS "b\n"][LIT_CHARS "c\n"][LIT_CHARS "d\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub SORT]} {[LIT_CHARS -o]} {[LIT_CHARS xx]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]})
      (Com {[LIT_CHARS ./linecount]} {[LIT_CHARS A]} {[LIT_CHARS xx]} {[LIT_CHARS 68]})
      (Com {[VarSub SORT]} {[LIT_CHARS -o]} {[LIT_CHARS in]} {[LIT_CHARS -mu]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]})
      (Com {[LIT_CHARS ./linecount]} {[LIT_CHARS B]} {[LIT_CHARS in]} {[LIT_CHARS 4]})
      (Com {[VarSub SORT]} {[LIT_CHARS -o]} {[LIT_CHARS in]} {[LIT_CHARS -m]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in]})
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS cmp]} {[LIT_CHARS -s]} {[LIT_CHARS in]} {[LIT_CHARS xx]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS C]} {[LIT_CHARS FAILED]})
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 12]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "does -mu pick the first among equals?"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "3B\n"][LIT_CHARS "3b\n"][LIT_CHARS "3B2\n"][LIT_CHARS "~3B2\n"][LIT_CHARS "4.1\n"][LIT_CHARS "41\n"][LIT_CHARS "5\n"][LIT_CHARS "5.\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "3B\n"][LIT_CHARS "3B2\n"][LIT_CHARS "4.1\n"][LIT_CHARS "5\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_CHARS -mudf]})
        (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "(other behavior is legal, not classical)"]]})
      )
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS B]} {[LIT_CHARS -mudf]} {[LIT_CHARS -k1]})
        (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS "(other behavior is legal, not classical)"]]})
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 13]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "long records (>8000 bytes, keys >16000), -r"]]})
      (Com {[VarSub AWK]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "BEGIN {\tx=\"x\"\n"> <LIT_CHARS "\tfor(i=1; i<=12; i++) x = x x\n"> <LIT_CHARS "\tfor(i=15; i<=25; i++) print x i\n"> <LIT_CHARS "}">]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
        >
      )
      (Com {[VarSub AWK]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "BEGIN {\tx=\"x\"\n"> <LIT_CHARS "\tfor(i=1; i<=12; i++) x = x x\n"> <LIT_CHARS "\tfor(i=25; i>=15; i--) print x i\n"> <LIT_CHARS "}">]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
        >
      )
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_CHARS -r]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS B]} {[LIT_CHARS -k]} {[LIT_CHARS 1] [LIT_COMMA ","] [LIT_CHARS 1r]} {[LIT_CHARS -k]} {[LIT_CHARS 1]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 14]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "-n and -u"]]})
      (Com {[LIT_CHARS cp]} {[LIT_CHARS 14.in]} {[LIT_CHARS in]})
      (Com {[LIT_CHARS rm]} {[LIT_CHARS -f]} {[LIT_CHARS out]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS A]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS B]} {[LIT_CHARS -n]})
      (Com {[VarSub AWK]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "\t$0 < x { print \"test ">] [VarSub TEST] [LIT_CHARS C] [SQ <LIT_CHARS " FAILED\"; exit }\n"> <LIT_CHARS "\t\"X\" $0 != \"X\" x { print >\"out\"; x = $0 }\n">]} {[LIT_CHARS xx]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS C]} {[LIT_CHARS -n]} {[LIT_CHARS -u]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 15]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "force intermediate files if possible"]]})
      (Case to_match={[DQ [VarSub y]]}, pat_word_list=[[{[DQ ]}]]
        (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[LIT_CHARS inadequate]} {[LIT_CHARS test]} {[LIT_CHARS of]} {[LIT_CHARS large]} {[LIT_CHARS files]} {[LIT_CHARS -]} {[LIT_CHARS revise]} {[LIT_CHARS parameters]})
      )
      (Com {[LIT_CHARS cp]} {[LIT_CHARS 15.in]} {[LIT_CHARS in]})
      (Com {[LIT_CHARS rm]} {[LIT_CHARS -f]} {[LIT_CHARS out]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_CHARS -r]} {[VarSub y]})
      (Pipeline
        (Com {[LIT_CHARS cat]} {[LIT_CHARS in]})
        (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS -]} {[LIT_CHARS B]} {[LIT_CHARS -r]} {[VarSub y]})
      )
      (Com {[VarSub X]} {[LIT_CHARS ./xsort]} {[LIT_CHARS C]} {[LIT_CHARS -r]} {[VarSub y]} {[LIT_CHARS -Xread]})
      (Pipeline
        (Com {[VarSub X]} {[LIT_CHARS cat]} {[LIT_CHARS in]})
        (Com {[VarSub X]} {[LIT_CHARS ./xsort]} {[LIT_CHARS -]} {[LIT_CHARS D]} {[LIT_CHARS -r]} {[VarSub y]} {[LIT_CHARS -Xread]})
      )
      (Com {[LIT_CHARS rm]} {[LIT_CHARS -f]} {[LIT_CHARS in1]})
      (Com {[VarSub SORT]} {[LIT_CHARS -r]} {[LIT_CHARS -o]} {[LIT_CHARS in1]} {[LIT_CHARS in]})
      (Com {[VarSub AWK]} {[SQ <LIT_CHARS "$0 \"x\" != x { print ; x = $0 \"x\" }">]} {[LIT_CHARS in1]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS E]} {[LIT_CHARS -u]} {[LIT_CHARS -r]} {[VarSub y]})
      (Pipeline
        (Com {[LIT_CHARS cat]} {[LIT_CHARS in]})
        (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS -]} {[LIT_CHARS F]} {[LIT_CHARS -u]} {[LIT_CHARS -r]} {[VarSub y]})
      )
      (Com {[VarSub X]} {[LIT_CHARS ./xsort]} {[LIT_CHARS G]} {[LIT_CHARS -u]} {[LIT_CHARS -r]} {[VarSub y]} {[LIT_CHARS -Xread]})
      (Pipeline
        (Com {[VarSub X]} {[LIT_CHARS cat]} {[LIT_CHARS in]})
        (Com {[VarSub X]} {[LIT_CHARS ./xsort]} {[LIT_CHARS -]} {[LIT_CHARS H]} {[LIT_CHARS -u]} {[LIT_CHARS -r]} {[VarSub y]} {[LIT_CHARS -Xread]})
      )
      (Com {[VarSub SORT]} {[LIT_CHARS -r]} {[LIT_CHARS -u]} {[LIT_CHARS -m]} {[LIT_CHARS -o]} {[LIT_CHARS in1]} {[LIT_CHARS in1]})
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS cmp]} {[LIT_CHARS -s]} {[LIT_CHARS in1]} {[LIT_CHARS out]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS I]} {[LIT_CHARS FAILED]})
      )
      (Com {[LIT_CHARS rm]} {[LIT_CHARS in]} {[LIT_CHARS in1]} {[LIT_CHARS out]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 16]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "-nr, -nm, file name -"]]})
      (Com {[VarSub AWK]} {[SQ <LIT_CHARS "BEGIN { for(i=-100; i<=100; i+=2) printf \"%.10d\\n\", i }">]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
        >
      )
      (Pipeline
        (Com {[VarSub AWK]} {[SQ <LIT_CHARS "BEGIN { for(i=-99; i<=100; i+=2) print i }">]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
          >
        )
        (Com {[VarSub SORT]} {[LIT_CHARS -nr]} {[LIT_CHARS in]} {[LIT_CHARS -]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
          >
        )
      )
      (Com {[VarSub AWK]} {[SQ <LIT_CHARS "$0+0 != 101-NR { print \"">] [VarSub TEST] [LIT_CHARS A] [SQ <LIT_CHARS " FAILED\"; exit }">]} {[LIT_CHARS xx]})
      (Pipeline
        (Com {[VarSub AWK]} {[SQ <LIT_CHARS "BEGIN { for(i=-99; i<=100; i+=2) print i }">]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
          >
        )
        (Com {[VarSub SORT]} {[LIT_CHARS -mn]} {[LIT_CHARS -]} {[LIT_CHARS in]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
          >
        )
      )
      (Com {[VarSub AWK]} {[SQ <LIT_CHARS "$0+0 != -101+NR { print \"">] [VarSub TEST] [LIT_CHARS B] [SQ <LIT_CHARS " FAILED\"; exit }">]} {[LIT_CHARS xx]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 17]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "-d, fields without end, modifier override"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "a-B\n"][LIT_CHARS "a+b\n"][LIT_CHARS "a b\n"][LIT_CHARS "A+b\n"][LIT_CHARS "a\tb\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "a\tb\n"][LIT_CHARS "a b\n"][LIT_CHARS "A+b\n"][LIT_CHARS "a-B\n"][LIT_CHARS "a+b\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub o]} {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_CHARS -df]} {[LIT_OTHER "+"] [LIT_CHARS 0]} {[LIT_OTHER "+"] [LIT_CHARS 0d]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS B]} {[LIT_CHARS -df]} {[LIT_CHARS -k]} {[LIT_CHARS 1]} {[LIT_CHARS -k]} {[LIT_CHARS 1d]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 18]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "-u on key only"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "12\ty\n"][LIT_CHARS "13\tz\n"][LIT_CHARS "12\tx\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "12\tx\n"][LIT_CHARS "12\ty\n"][LIT_CHARS "13\tz\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub o]} {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_OTHER "+"] [LIT_CHARS 0]} {[LIT_CHARS -1]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS B]} {[LIT_CHARS -k]} {[LIT_CHARS 1] [LIT_COMMA ","] [LIT_CHARS 1]})
      (Com {[VarSub SORT]} {[LIT_CHARS -u]} {[LIT_CHARS -k]} {[LIT_CHARS 1] [LIT_COMMA ","] [LIT_CHARS 1]} {[LIT_CHARS in]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[LIT_CHARS ./linecount]} {[LIT_CHARS C]} {[LIT_CHARS xx]} {[LIT_CHARS 2]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 19]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "-i, -d, -f"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx.c]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "#include <stdio.h>\n"][LIT_CHARS "static void run(int i, int j){ for( ; i<=j; i++) printf("][RIGHT_D_QUOTE "\""][LIT_CHARS "%.3o %c"][\ LIT_ESCAPED_CHAR "\\n"][RIGHT_D_QUOTE "\""][LIT_CHARS ",i,i); }\n"][LIT_CHARS "int main(){\trun(0, 011);\t\t/* 012=='"][\ LIT_ESCAPED_CHAR "\\n"][LIT_CHARS "' */\n"][LIT_CHARS "\trun(013, 0377);\n"][LIT_CHARS "\treturn 0; }\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub CC]} {[LIT_CHARS -o]} {[LIT_CHARS xx.exe]} {[LIT_CHARS xx.c]})
      (Com {[LIT_CHARS ./xx.exe]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx.c]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "#include <stdio.h>\n"][LIT_CHARS "static void run(int i, int j){ for( ; i<=j; i++) printf("][RIGHT_D_QUOTE "\""][LIT_CHARS "%.3o %c"][\ LIT_ESCAPED_CHAR "\\n"][RIGHT_D_QUOTE "\""][LIT_CHARS ",i,i); }\n"][LIT_CHARS "int main(){ run(0, 011);\n"][LIT_CHARS "\trun(013, ' '-1);\n"][LIT_CHARS "\trun(0177, 0377);\n"][LIT_CHARS "\trun(' ', 0176);\n"][LIT_CHARS "\treturn 0; }\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub CC]} {[LIT_CHARS -o]} {[LIT_CHARS xx.exe]} {[LIT_CHARS xx.c]})
      (Com {[LIT_CHARS ./xx.exe]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_CHARS -i]} {[LIT_CHARS -k]} {[LIT_CHARS 2]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx.c]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "#include <stdio.h>\n"][LIT_CHARS "static void run(int i, int j){ for( ; i<=j; i++) printf("][RIGHT_D_QUOTE "\""][LIT_CHARS "%.3o %c"][\ LIT_ESCAPED_CHAR "\\n"][RIGHT_D_QUOTE "\""][LIT_CHARS ",i,i); }\n"][LIT_CHARS "int main(){\trun(0, 010);\t\t/* 011=='"][\ LIT_ESCAPED_CHAR "\\t"][LIT_CHARS "', 012=='"][\ LIT_ESCAPED_CHAR "\\n"][LIT_CHARS "' */\n"][LIT_CHARS "\trun(013, ' '-1);\n"][LIT_CHARS "\trun(' '+1, '0'-1);\n"][LIT_CHARS "\trun('9'+1, 'A'-1);\n"][LIT_CHARS "\trun('Z'+1, 'a'-1);\n"][LIT_CHARS "\trun('z'+1, 0377);\n"][LIT_CHARS "\trun('"][\ LIT_ESCAPED_CHAR "\\t"][LIT_CHARS "', '"][\ LIT_ESCAPED_CHAR "\\t"][LIT_CHARS "');\n"][LIT_CHARS "\trun(' ', ' ');\n"][LIT_CHARS "\trun('0', '9');\n"][LIT_CHARS "\trun('A', 'Z');\n"][LIT_CHARS "\trun('a', 'z');\n"][LIT_CHARS "\treturn 0; }\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub CC]} {[LIT_CHARS -o]} {[LIT_CHARS xx.exe]} {[LIT_CHARS xx.c]})
      (Com {[LIT_CHARS ./xx.exe]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS B]} {[LIT_CHARS -d]} {[LIT_CHARS -k]} {[LIT_CHARS 2]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx.c]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "#include <stdio.h>\n"][LIT_CHARS "static void run(int i, int j){ for( ; i<=j; i++) printf("][RIGHT_D_QUOTE "\""][LIT_CHARS "%.3o %c"][\ LIT_ESCAPED_CHAR "\\n"][RIGHT_D_QUOTE "\""][LIT_CHARS ",i,i); }\n"][LIT_CHARS "int main(){\tint i;\n"][LIT_CHARS "\trun(0, 011);\n"][LIT_CHARS "\trun(013, 'A'-1);\n"][LIT_CHARS "\tfor(i='A'; i<='Z'; i++) \n"][LIT_CHARS "\t\tprintf("][RIGHT_D_QUOTE "\""][LIT_CHARS "%.3o %c"][\ LIT_ESCAPED_CHAR "\\n"][LIT_CHARS "%.3o %c"][\ LIT_ESCAPED_CHAR "\\n"][RIGHT_D_QUOTE "\""][LIT_CHARS ",i,i,i+040,i+040);\n"][LIT_CHARS "\trun('Z'+1, 'a'-1);\n"][LIT_CHARS "\trun('z'+1, 0377);\n"][LIT_CHARS "\treturn 0; }\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub CC]} {[LIT_CHARS -o]} {[LIT_CHARS xx.exe]} {[LIT_CHARS xx.c]})
      (Com {[LIT_CHARS ./xx.exe]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[LIT_CHARS rm]} {[LIT_CHARS -f]} {[LIT_CHARS xx.c]} {[LIT_CHARS xx.o]} {[LIT_CHARS xx.exe]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS C]} {[LIT_CHARS -f]} {[LIT_CHARS -k]} {[LIT_CHARS 2]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 20]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "-d, -f, -b applies only to fields"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS " b\n"][LIT_CHARS "'C\n"][LIT_CHARS "a\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cp]} {[LIT_CHARS in]} {[LIT_CHARS out]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_CHARS -d]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS B]} {[LIT_CHARS -f]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS " b\n"][LIT_CHARS "a\n"][LIT_CHARS "'C\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS C]} {[LIT_CHARS -dfb]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 21]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "behavior of null bytes"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx.c]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=False body_word={[LIT_CHARS "#include <stdio.h>\n"] [LIT_CHARS "int main() { printf(\"\\n%cb\\n%ca\\n\",0,0); return 0; }\n"]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub CC]} {[LIT_CHARS -o]} {[LIT_CHARS xx.exe]} {[LIT_CHARS xx.c]})
      (Com {[LIT_CHARS ./xx.exe]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[VarSub SORT]} {[LIT_CHARS -u]} {[LIT_CHARS in]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
        >
      )
      (AndOr OP_AND_IF
        (Com {[LIT_CHARS cmp]} {[LIT_CHARS -s]} {[LIT_CHARS in]} {[LIT_CHARS xx]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS A]} {[LIT_CHARS FAILED]})
      )
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS test]} {[DQ [ComSub (Com redirects=[(FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_LESS "<"> 0)]{[LIT_CHARS wc]} {[LIT_CHARS -c]})]]} {[LIT_OTHER "="]} {[DQ [ComSub (Com redirects=[(FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_LESS "<"> 0)]{[LIT_CHARS wc]} {[LIT_CHARS -c]})]]})
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS B]} {[LIT_CHARS FAILED]})
      )
      (Com {[LIT_CHARS rm]} {[LIT_CHARS -f]} {[LIT_CHARS xx.c]} {[LIT_CHARS xx.o]} {[LIT_CHARS xx.exe]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 22]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "field limits"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "a\t2\n"][LIT_CHARS "a\t1\n"][LIT_CHARS "b\t2\n"][LIT_CHARS "b\t1\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "b\t1\n"][LIT_CHARS "b\t2\n"][LIT_CHARS "a\t1\n"][LIT_CHARS "a\t2\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS ./xsort]} {[DQ ]} {[LIT_CHARS -r]} {[LIT_CHARS -k1] [LIT_COMMA ","] [LIT_CHARS 1]} {[LIT_CHARS -k2n]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 23]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "empty file, compact -o"]]})
      (Com {[LIT_CHARS echo]} {[LIT_CHARS hi]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[VarSub SORT]} {[LIT_CHARS -oxx]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
        >
      )
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS cmp]} {[LIT_CHARS -s]} {[LIT_CHARS xx]} {[LIT_CHARS /dev/null]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS A]} {[LIT_CHARS FAILED]})
      )
      (AndOr OP_OR_IF
        (Com {[VarSub SORT]} {[LIT_CHARS -c]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS B]} {[LIT_CHARS FAILED]})
      )
      (AndOr OP_OR_IF
        (Com {[VarSub SORT]} {[LIT_CHARS -cu]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS C]} {[LIT_CHARS FAILED]})
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 24]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "many fields"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "0:2:3:4:5:6:7:8:9\n"][LIT_CHARS "1:1:3:4:5:6:7:8:9\n"][LIT_CHARS "1:2:2:4:5:6:7:8:9\n"][LIT_CHARS "1:2:3:3:5:6:7:8:9\n"][LIT_CHARS "1:2:3:4:4:6:7:8:9\n"][LIT_CHARS "1:2:3:4:5:5:7:8:9\n"][LIT_CHARS "1:2:3:4:5:6:6:8:9\n"][LIT_CHARS "1:2:3:4:5:6:7:7:9\n"][LIT_CHARS "1:2:3:4:5:6:7:8:8\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "1:2:3:4:5:6:7:8:8\n"][LIT_CHARS "1:2:3:4:5:6:7:7:9\n"][LIT_CHARS "1:2:3:4:5:6:6:8:9\n"][LIT_CHARS "1:2:3:4:5:5:7:8:9\n"][LIT_CHARS "1:2:3:4:4:6:7:8:9\n"][LIT_CHARS "1:2:3:3:5:6:7:8:9\n"][LIT_CHARS "1:2:2:4:5:6:7:8:9\n"][LIT_CHARS "1:1:3:4:5:6:7:8:9\n"][LIT_CHARS "0:2:3:4:5:6:7:8:9\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS ./xsort]} {[DQ ]} {[LIT_CHARS -t] [LIT_OTHER ":"]} {[LIT_CHARS -k9]} {[LIT_CHARS -k8]} {[LIT_CHARS -k7]} {[LIT_CHARS -k6]} {[LIT_CHARS -k5]} {[LIT_CHARS -k4]} {[LIT_CHARS -k3]} {[LIT_CHARS -k2]} {[LIT_CHARS -k1]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 25]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "variously specified alpha fields"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "01:04:19:01:16:01:21:01 a\n"][LIT_CHARS "02:03:13:15:13:19:15:02  a\n"][LIT_CHARS "03:02:07:09:07:13:09:03   a\n"][LIT_CHARS "04:01:01:03:01:07:03:04    a\n"][LIT_CHARS "05:08:20:16:17:02:20:05 aa\n"][LIT_CHARS "06:07:14:18:14:20:14:06  aa\n"][LIT_CHARS "07:06:08:10:08:14:08:07   aa\n"][LIT_CHARS "08:05:02:04:02:08:02:08    aa\n"][LIT_CHARS "09:16:22:02:22:04:24:13 b\n"][LIT_CHARS "10:15:16:20:19:22:18:14  b\n"][LIT_CHARS "11:14:10:12:10:16:12:15   b\n"][LIT_CHARS "12:13:04:06:04:10:06:16    b\n"][LIT_CHARS "13:24:24:22:24:06:22:21 bb\n"][LIT_CHARS "14:23:18:24:21:24:16:22  bb\n"][LIT_CHARS "15:22:12:14:12:18:10:23   bb\n"][LIT_CHARS "16:21:06:08:06:12:04:24    bb\n"][LIT_CHARS "17:12:21:21:18:03:19:09 ab\n"][LIT_CHARS "18:11:15:19:15:21:13:10  ab\n"][LIT_CHARS "19:10:09:11:09:15:07:11   ab\n"][LIT_CHARS "20:09:03:05:03:09:01:12    ab\n"][LIT_CHARS "21:20:23:17:23:05:23:17 ba\n"][LIT_CHARS "22:19:17:23:20:23:17:18  ba\n"][LIT_CHARS "23:18:11:13:11:17:11:19   ba\n"][LIT_CHARS "24:17:05:07:05:11:05:20    ba\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub SORT]} {[LIT_CHARS -k2b]} {[LIT_CHARS -k2]} {[LIT_CHARS in]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
        >
      )
      (AndOr OP_OR_IF
        (Com {[VarSub SORT]} {[LIT_CHARS -c]} {[LIT_CHARS -t] [LIT_OTHER ":"]} {[LIT_CHARS -k2n]} {[LIT_CHARS xx]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS A]} {[LIT_CHARS FAILED]})
      )
      (Com {[VarSub SORT]} {[LIT_CHARS -k2] [LIT_COMMA ","] [LIT_CHARS 2.1b]} {[LIT_CHARS -k2]} {[LIT_CHARS in]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
        >
      )
      (AndOr OP_OR_IF
        (Com {[VarSub SORT]} {[LIT_CHARS -c]} {[LIT_CHARS -t] [LIT_OTHER ":"]} {[LIT_CHARS -k3n]} {[LIT_CHARS xx]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS B]} {[LIT_CHARS FAILED]})
      )
      (Com {[VarSub SORT]} {[LIT_CHARS -k2.3]} {[LIT_CHARS -k2]} {[LIT_CHARS in]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
        >
      )
      (AndOr OP_OR_IF
        (Com {[VarSub SORT]} {[LIT_CHARS -c]} {[LIT_CHARS -t] [LIT_OTHER ":"]} {[LIT_CHARS -k4n]} {[LIT_CHARS xx]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS C]} {[LIT_CHARS FAILED]})
      )
      (Com {[VarSub SORT]} {[LIT_CHARS -k2b] [LIT_COMMA ","] [LIT_CHARS 2.3]} {[LIT_CHARS -k2]} {[LIT_CHARS in]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
        >
      )
      (AndOr OP_OR_IF
        (Com {[VarSub SORT]} {[LIT_CHARS -c]} {[LIT_CHARS -t] [LIT_OTHER ":"]} {[LIT_CHARS -k5n]} {[LIT_CHARS xx]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS D]} {[LIT_CHARS FAILED]})
      )
      (Com {[VarSub SORT]} {[LIT_CHARS -k2.3] [LIT_COMMA ","] [LIT_CHARS 2.1b]} {[LIT_CHARS -k2]} {[LIT_CHARS in]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
        >
      )
      (AndOr OP_OR_IF
        (Com {[VarSub SORT]} {[LIT_CHARS -c]} {[LIT_CHARS -t] [LIT_OTHER ":"]} {[LIT_CHARS -k6n]} {[LIT_CHARS xx]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS E]} {[LIT_CHARS FAILED]})
      )
      (Com {[VarSub SORT]} {[LIT_CHARS -k2] [LIT_COMMA ","] [LIT_CHARS 2.1b]} {[LIT_CHARS -k2r]} {[LIT_CHARS in]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
        >
      )
      (AndOr OP_OR_IF
        (Com {[VarSub SORT]} {[LIT_CHARS -c]} {[LIT_CHARS -t] [LIT_OTHER ":"]} {[LIT_CHARS -k7n]} {[LIT_CHARS xx]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS F]} {[LIT_CHARS FAILED]})
      )
      (Com {[VarSub SORT]} {[LIT_CHARS -b]} {[LIT_CHARS -k2] [LIT_COMMA ","] [LIT_CHARS 2]} {[LIT_CHARS -k2]} {[LIT_CHARS in]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
        >
      )
      (AndOr OP_OR_IF
        (Com {[VarSub SORT]} {[LIT_CHARS -c]} {[LIT_CHARS -t] [LIT_OTHER ":"]} {[LIT_CHARS -k8n]} {[LIT_CHARS xx]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS G]} {[LIT_CHARS FAILED]})
      )
      (Com {[VarSub SORT]} {[LIT_CHARS -b]} {[LIT_CHARS -k2] [LIT_COMMA ","] [LIT_CHARS 2b]} {[LIT_CHARS -k2]} {[LIT_CHARS in]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
        >
      )
      (AndOr OP_OR_IF
        (Com {[VarSub SORT]} {[LIT_CHARS -c]} {[LIT_CHARS -t] [LIT_OTHER ":"]} {[LIT_CHARS -k3n]} {[LIT_CHARS xx]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS H]} {[LIT_CHARS FAILED]} {[DQ [LIT_CHARS "(standard is not clear on this)"]]})
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 26]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "empty fields, out of bounds fields\t"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "0 5\n"][LIT_CHARS "1 4\n"][LIT_CHARS "2 3\n"][LIT_CHARS "3 2\n"][LIT_CHARS "4 1\n"][LIT_CHARS "5 0\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cp]} {[LIT_CHARS in]} {[LIT_CHARS out]})
      (Com {[LIT_CHARS ./xsort]} {[DQ ]} {[LIT_CHARS -k2.2] [LIT_COMMA ","] [LIT_CHARS 2.1]} {[LIT_CHARS -k2.3] [LIT_COMMA ","] [LIT_CHARS 2.4]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 27]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "displaced -o"]]})
      (Com {[LIT_CHARS rm]} {[LIT_CHARS -f]} {[LIT_CHARS out]})
      (AndOr OP_OR_IF
        (Com {[VarSub O]} {[VarSub SORT]} {[LIT_CHARS /dev/null]} {[LIT_CHARS -o]} {[LIT_CHARS out]})
        (Com {[VarSub o]} {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS B]} {[LIT_CHARS FAILED]})
      )
      (AndOr OP_OR_IF
        (Com {[VarSub O]} {[LIT_CHARS test]} {[LIT_CHARS -f]} {[LIT_CHARS out]})
        (Com {[VarSub O]} {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS C]} {[LIT_CHARS FAILED]})
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 28]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "apparently nonmonotone field specs"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "aaaa c\n"][LIT_CHARS "x a\n"][LIT_CHARS "0 b\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cp]} {[LIT_CHARS in]} {[LIT_CHARS out]})
      (Com {[VarSub o]} {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_OTHER "+"] [LIT_CHARS 1]} {[LIT_CHARS -0.3]} {[LIT_OTHER "+"] [LIT_CHARS 1.4]} {[LIT_CHARS -1.5]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS B]} {[LIT_CHARS -k2] [LIT_COMMA ","] [LIT_CHARS 1.3]} {[LIT_CHARS -k2.5] [LIT_COMMA ","] [LIT_CHARS 2.5]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 29]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "determination of end of option list"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS -k]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "x\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS rm]} {[LIT_CHARS -f]} {[LIT_CHARS out]} {[LIT_CHARS -c]})
      (AndOr OP_OR_IF
        (Com {[VarSub SORT]} {[LIT_CHARS --]} {[LIT_CHARS -k]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
          (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS A]} {[LIT_CHARS argument]} {[LIT_CHARS FAILED]})
      )
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS cmp]} {[LIT_CHARS -s]} {[LIT_CHARS xx]} {[LIT_CHARS -k]})
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS A]} {[LIT_CHARS comparison]} {[LIT_CHARS FAILED]})
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "xxx\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com 
        <
        (FilenameRedirectNode filename={[LIT_CHARS -]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com 
        <
        (FilenameRedirectNode filename={[LIT_CHARS -o]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com 
        <
        (FilenameRedirectNode filename={[LIT_CHARS in1]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[VarSub SORT]} {[LIT_CHARS --]} {[LIT_CHARS -o]} {[LIT_CHARS in1]} {[LIT_CHARS -]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_LESS "<"> 0),
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        >
      )
      (AndOr OP_OR_IF
        (Com {[LIT_CHARS cmp]} {[LIT_CHARS -s]} {[LIT_CHARS in]} {[LIT_CHARS out]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS C]} {[LIT_CHARS FAILED]})
      )
      (AndOr OP_AND_IF
        (Com {[LIT_CHARS test]} {[LIT_CHARS -s]} {[LIT_CHARS in1]})
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS D]} {[LIT_CHARS FAILED]})
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 30]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "missing newline"]]})
      (Com {[VarSub AWK]} {[SQ <LIT_CHARS "BEGIN{ printf \"%s\", \"x\"}">]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[LIT_CHARS echo]} {[LIT_CHARS x]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[LIT_CHARS ./xsort]} {[DQ ]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
        >
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 31]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "-M, multiple fields"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "jan 10 1900\n"][LIT_CHARS "Feb 26 1900\n"][LIT_CHARS "feb 25 1900\n"][LIT_CHARS "January xx 1900\n"][LIT_CHARS "August 11 1900\n"][LIT_CHARS "jan 15 1990\n"][LIT_CHARS "feb 22 1990\n"][LIT_CHARS "mar 15 1990\n"][LIT_CHARS "apr 1 1990\n"][LIT_CHARS "may 45 1990\n"][LIT_CHARS "jun 14 1990\n"][LIT_CHARS "jul 4 1990\n"][LIT_CHARS "aug 1~ 1990\n"][LIT_CHARS "aug 11 1990\n"][LIT_CHARS "sep 1 1990\n"][LIT_CHARS "oct 12 1990\n"][LIT_CHARS "nov 24 1990\n"][LIT_CHARS "dec 25 1990\n"][LIT_CHARS "never 3 1990\n"][LIT_CHARS " Dec 25 1990\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "January xx 1900\n"][LIT_CHARS "jan 10 1900\n"][LIT_CHARS "feb 25 1900\n"][LIT_CHARS "Feb 26 1900\n"][LIT_CHARS "August 11 1900\n"][LIT_CHARS "never 3 1990\n"][LIT_CHARS "jan 15 1990\n"][LIT_CHARS "feb 22 1990\n"][LIT_CHARS "mar 15 1990\n"][LIT_CHARS "apr 1 1990\n"][LIT_CHARS "may 45 1990\n"][LIT_CHARS "jun 14 1990\n"][LIT_CHARS "jul 4 1990\n"][LIT_CHARS "aug 1~ 1990\n"][LIT_CHARS "aug 11 1990\n"][LIT_CHARS "sep 1 1990\n"][LIT_CHARS "oct 12 1990\n"][LIT_CHARS "nov 24 1990\n"][LIT_CHARS " Dec 25 1990\n"][LIT_CHARS "dec 25 1990\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub M]} {[LIT_CHARS ./xsort]} {[DQ ]} {[LIT_CHARS -k3n]} {[LIT_CHARS -k1M]} {[LIT_CHARS -k2n]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 32]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "-M case insensitivity, -r"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "x\n"][LIT_CHARS "june\n"][LIT_CHARS "january\n"][LIT_CHARS "december\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "december\n"][LIT_CHARS "june\n"][LIT_CHARS "january\n"][LIT_CHARS "x\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub M]} {[LIT_CHARS ./xsort]} {[DQ ]} {[LIT_CHARS -Mr]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 33]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "-g, big enough for IEEE floating point"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "2\n"][LIT_CHARS "1\n"][LIT_CHARS "10\n"][LIT_CHARS "1e-1\n"][LIT_CHARS ".2\n"][LIT_CHARS "1e\n"][LIT_CHARS "1E1\n"][LIT_CHARS "1e.\n"][LIT_CHARS "3e+308\n"][LIT_CHARS "3e307\n"][LIT_CHARS "1e-308\n"][LIT_CHARS "1e-307\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "1e-308\n"][LIT_CHARS "1e-307\n"][LIT_CHARS "1e-1\n"][LIT_CHARS ".2\n"][LIT_CHARS "1\n"][LIT_CHARS "1e\n"][LIT_CHARS "1e.\n"][LIT_CHARS "2\n"][LIT_CHARS "10\n"][LIT_CHARS "1E1\n"][LIT_CHARS "3e307\n"][LIT_CHARS "3e+308\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub g]} {[LIT_CHARS ./xsort]} {[DQ ]} {[LIT_CHARS -g]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 34]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "-g wide operands"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS ".99999999999999999999\n"][LIT_CHARS "099999999999999999999e-21\n"][LIT_CHARS "099999999999999999999e-19\n"][LIT_CHARS ".1e1\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "099999999999999999999e-21\n"][LIT_CHARS ".99999999999999999999\n"][LIT_CHARS ".1e1\n"][LIT_CHARS "099999999999999999999e-19\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub g]} {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_CHARS -g]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS ".1e1\n"][LIT_CHARS ".99999999999999999999\n"][LIT_CHARS "099999999999999999999e-19\n"][LIT_CHARS "099999999999999999999e-21\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS B]} {[LIT_CHARS -n]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 35]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "-g, -u with different fp reps"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "+0\n"][LIT_CHARS "-0\n"][LIT_CHARS "0\n"][LIT_CHARS "0.10\n"][LIT_CHARS "+.1\n"][LIT_CHARS "-.1\n"][LIT_CHARS "-100e-3x\n"][LIT_CHARS "x\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "-.1\n"][LIT_CHARS "-100e-3x\n"][LIT_CHARS "+0\n"][LIT_CHARS "-0\n"][LIT_CHARS "0\n"][LIT_CHARS "x\n"][LIT_CHARS "+.1\n"][LIT_CHARS "0.10\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub g]} {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_CHARS -g]})
      (AndOr OP_AND_IF
        (Com {[VarSub g]} {[VarSub SORT]} {[LIT_CHARS -gu]} {[LIT_CHARS in]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
          >
        )
        (AndOr OP_OR_IF
          (Com {[VarSub g]} {[VarSub SORT]} {[LIT_CHARS -c]} {[LIT_CHARS -gu]} {[LIT_CHARS xx]})
          (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS B]} {[LIT_CHARS FAILED]})
        )
      )
      (Com {[VarSub g]} {[LIT_CHARS ./linecount]} {[LIT_CHARS C]} {[LIT_CHARS xx]} {[LIT_CHARS 3]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 36]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS -s]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "a 2\n"][LIT_CHARS "b 1\n"][LIT_CHARS "c 2\n"][LIT_CHARS "a 1\n"][LIT_CHARS "b 2\n"][LIT_CHARS "c 1\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "a 2\n"][LIT_CHARS "a 1\n"][LIT_CHARS "b 1\n"][LIT_CHARS "b 2\n"][LIT_CHARS "c 2\n"][LIT_CHARS "c 1\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub s]} {[LIT_CHARS ./xsort]} {[DQ ]} {[LIT_CHARS -s]} {[LIT_CHARS -k1] [LIT_COMMA ","] [LIT_CHARS 1]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 37]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "-s, multiple files"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "a 2\n"][LIT_CHARS "c 2\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in1]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "a 1\n"][LIT_CHARS "b 1\n"][LIT_CHARS "c 1\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "a 2\n"][LIT_CHARS "b 1\n"][LIT_CHARS "c 2\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub s]} {[VarSub SORT]} {[LIT_CHARS -su]} {[LIT_CHARS -k1] [LIT_COMMA ","] [LIT_CHARS 1]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in1]} {[LIT_CHARS in1]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
        >
      )
      (AndOr OP_OR_IF
        (Com {[VarSub s]} {[LIT_CHARS cmp]} {[LIT_CHARS -s]} {[LIT_CHARS xx]} {[LIT_CHARS out]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS A]} {[LIT_CHARS FAILED]})
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "c 1\n"][LIT_CHARS "b 1\n"][LIT_CHARS "a 1\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub s]} {[VarSub SORT]} {[LIT_CHARS -sru]} {[LIT_CHARS -k1] [LIT_COMMA ","] [LIT_CHARS 1]} {[LIT_CHARS in]} {[LIT_CHARS in]} {[LIT_CHARS in1]} {[LIT_CHARS in1]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS xx]} <REDIR_GREAT ">"> 1),
        >
      )
      (AndOr OP_OR_IF
        (Com {[VarSub s]} {[LIT_CHARS cmp]} {[LIT_CHARS -s]} {[LIT_CHARS xx]} {[LIT_CHARS out]}
          <
          (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
          >
        )
        (Com {[LIT_CHARS echo]} {[VarSub TEST] [LIT_CHARS B]} {[LIT_CHARS FAILED]})
      )
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 38]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS -s]]})
      (Com {[VarSub s]} {[VarSub AWK]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "\tBEGIN {\n"> <LIT_CHARS "\t\tfor(i=1; i<50; i++)\n"> <LIT_CHARS "\t\t\tfor(j=1; j<=i; j++) {\n"> <LIT_CHARS "\t\t\t\tprint i, 2 >\"in\"\n"> <LIT_CHARS "\t\t\t\tprint i, 1 >\"in1\"\n"> <LIT_CHARS "\t\t\t}\n"> <LIT_CHARS "\t}">]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_LESS "<"> 0),
        >
      )
      (Com {[VarSub s]} {[VarSub SORT]} {[LIT_CHARS -m]} {[LIT_CHARS -s]} {[LIT_CHARS -k1] [LIT_COMMA ","] [LIT_CHARS 1n]} {[LIT_CHARS in]} {[LIT_CHARS in1]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[VarSub s]} {[VarSub AWK]} {[SQ <LIT_CHARS "\n"> <LIT_CHARS "\tfunc stop()\t{ print \"">] [VarSub TEST] [SQ <LIT_CHARS " FAILED\"; exit }\n"> <LIT_CHARS "\t$1!=last1 \t{ if(count!=last1 || $2!=2) stop();\n"> <LIT_CHARS "\t\t\t  count = 0}\n"> <LIT_CHARS "\t$1==last1 && $2!=last2 { if(count!=last1 || $2!=1) stop();\n"> <LIT_CHARS "\t\t\t\t count = 0 }\n"> <LIT_CHARS "\t\t\t{ count++; last1 = $1; last2 = $2 }\n"> <LIT_CHARS "\t">]} {[LIT_CHARS out]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 39]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "empty fields"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "bXXa\n"][LIT_CHARS "aXXb\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cp]} {[LIT_CHARS in]} {[LIT_CHARS out]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_CHARS -k3]} {[LIT_CHARS -tX]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS B]} {[LIT_CHARS -k2]} {[LIT_CHARS -tX]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS C]} {[LIT_CHARS -r]} {[LIT_CHARS -k2] [LIT_COMMA ","] [LIT_CHARS 2]} {[LIT_CHARS -tX]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS D]} {[LIT_CHARS -r]} {[LIT_CHARS -k4]} {[LIT_CHARS -tX]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 40]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "deceptive field boundaries"]]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "    1.2\n"][LIT_CHARS "  1.10\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cp]} {[LIT_CHARS in]} {[LIT_CHARS out]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_CHARS -t.]} {[LIT_CHARS -k1] [LIT_COMMA ","] [LIT_CHARS 1n]} {[LIT_CHARS -k2] [LIT_COMMA ","] [LIT_CHARS 2n]})
      (Com {[LIT_CHARS ./xsort]} {[LIT_CHARS B]} {[LIT_CHARS -t.]} {[LIT_CHARS -k1nr]} {[LIT_CHARS -k2n]})
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "  feb\n"][LIT_CHARS "  jan\n"][LIT_CHARS " jan\n"][LIT_CHARS "feb\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[LIT_CHARS cp]} {[LIT_CHARS in]} {[LIT_CHARS out]})
      (Com {[VarSub M]} {[LIT_CHARS ./xsort]} {[LIT_CHARS C]} {[LIT_CHARS -k1.1] [LIT_COMMA ","] [LIT_CHARS 1.4M]})
      (= scope=<EAssignScope.GLOBAL 1> flags=0 words=[] bindings=[('TEST', {[LIT_CHARS 41]})])
      (Com {[LIT_CHARS echo]} {[VarSub TEST]} {[DQ [LIT_CHARS "fixed length records"]]})
      (Com {[LIT_CHARS echo]} {[LIT_CHARS bdpoweonwekjbkgizohoeioilasho]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[LIT_CHARS echo]} {[LIT_CHARS hozopoonbkkjoieigishwewebdlao]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[VarSub k]} {[LIT_CHARS ./xsort]} {[LIT_CHARS A]} {[LIT_CHARS -s]} {[LIT_CHARS -r]} {[LIT_CHARS -R2]} {[LIT_CHARS -k.2.1]})
      (Subshell
        (List
          (Com {[LIT_CHARS echo]})
          (Com {[LIT_CHARS echo]})
        )
      )
      (Com {[LIT_CHARS cat]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        (HereDocRedirectNode here_end='!' do_expansion=True body_word={[DQ [LIT_CHARS "zoweweshpoonoio\n"][LIT_CHARS "lakjhogieibkbd\n"][LIT_CHARS "\n"]]} <REDIR_DLESS "<<"> 0),
        >
      )
      (Com {[VarSub k]} {[LIT_CHARS ./xsort]} {[LIT_CHARS B]} {[LIT_CHARS -s]} {[LIT_CHARS -r]} {[LIT_CHARS -R2]})
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS " aza zaz mzm mam\n"> <LIT_CHARS "\n"> <LIT_CHARS "\n">]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS in]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS " zaz mam mzm aza\n"> <LIT_CHARS "\n"> <LIT_CHARS "\n">]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[VarSub k]} {[LIT_CHARS ./xsort]} {[LIT_CHARS C]} {[LIT_CHARS -s]} {[LIT_CHARS -r]} {[LIT_CHARS -R4]} {[LIT_CHARS -k.2.1]})
      (Com {[VarSub k]} {[LIT_CHARS ./xsort]} {[LIT_CHARS D]} {[LIT_CHARS -s]} {[LIT_CHARS -r]} {[LIT_CHARS -R4]} {[LIT_CHARS -k1.2] [LIT_COMMA ","] [LIT_CHARS 1.2]})
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS " zaz mzm mam aza\n"> <LIT_CHARS "\n"> <LIT_CHARS "\n">]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[VarSub k]} {[LIT_CHARS ./xsort]} {[LIT_CHARS E]} {[LIT_CHARS -s]} {[LIT_CHARS -r]} {[LIT_CHARS -R4]} {[LIT_CHARS -k.2.2]})
      (Com {[VarSub k]} {[LIT_CHARS ./xsort]} {[LIT_CHARS F]} {[LIT_CHARS -s]} {[LIT_CHARS -r]} {[LIT_CHARS -R4]} {[LIT_CHARS -k1.2] [LIT_COMMA ","] [LIT_CHARS 1.3]})
      (Com {[VarSub k]} {[LIT_CHARS ./xsort]} {[LIT_CHARS G]} {[LIT_CHARS -s]} {[LIT_CHARS -r]} {[LIT_CHARS -R4]} {[LIT_CHARS -k1.2] [LIT_COMMA ","] [LIT_CHARS 1.2]} {[LIT_CHARS -k1.3] [LIT_COMMA ","] [LIT_CHARS 1.3]})
      (Com {[LIT_CHARS echo]} {[SQ <LIT_CHARS " mzm aza zaz mam\n"> <LIT_CHARS "\n"> <LIT_CHARS "\n">]}
        <
        (FilenameRedirectNode filename={[LIT_CHARS out]} <REDIR_GREAT ">"> 1),
        >
      )
      (Com {[VarSub k]} {[LIT_CHARS ./xsort]} {[LIT_CHARS H]} {[LIT_CHARS -s]} {[LIT_CHARS -r]} {[LIT_CHARS -R4]} {[LIT_CHARS -k1.3] [LIT_COMMA ","] [LIT_CHARS 1.3]} {[LIT_CHARS -k1.2] [LIT_COMMA ","] [LIT_CHARS 1.2]})
    )
  )
)