ninja: no work to do.
---
skipping ysh/testdata/assign.osh
---
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---
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---
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            (expr.Const
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              val: (value.Int i:3)
            )
          ]
          ctx: expr_context.Store
        )
    )
    (command.VarDecl
      keyword: 
        (Token
          id: Id.KW_Var
          length: 3
          col: 0
          line: (SourceLine line_num:16 content:"var y = mylist[1] * 10\n" src:...0x1c81)
        )
      lhs: [(NameType left:(Token id:Id.Expr_Name length:1 col:4 line:...0x19ee) name:y)]
      rhs: 
        (expr.Binary
          op: (Token id:Id.Arith_Star length:1 col:18 line:...0x19ee)
          left: 
            (Subscript
              left: (Token id:Id.Op_LBracket length:1 col:14 line:...0x19ee)
              obj: (expr.Var left:(Token id:Id.Expr_Name length:6 col:8 line:...0x19ee) name:mylist)
              index: 
                (expr.Const
                  c: (Token id:Id.Expr_DecInt length:1 col:15 line:...0x19ee)
                  val: (value.Int i:1)
                )
            )
          right: 
            (expr.Const
              c: (Token id:Id.Expr_DecInt length:2 col:20 line:...0x19ee)
              val: (value.Int i:10)
            )
        )
    )
    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          length: 4
          col: 0
          line: (SourceLine line_num:18 content:"echo \"y: $y\"\n" src:...0x1c81)
        )
      more_env: []
      words: [
        (CompoundWord parts:[...0x18e2])
        (CompoundWord
          parts: [
            (DoubleQuoted
              left: (Token id:Id.Left_DoubleQuote length:1 col:5 line:...0x18e6)
              parts: [
                (Token id:Id.Lit_Chars length:3 col:6 line:...0x18e6)
                (SimpleVarSub
                  tok: (Token id:Id.VSub_DollarName length:2 col:9 line:...0x18e6)
                )
              ]
              right: (Token id:Id.Right_DoubleQuote length:1 col:11 line:...0x18e6)
            )
          ]
        )
      ]
      do_fork: T
    )
    (command.VarDecl
      keyword: 
        (Token
          id: Id.KW_Var
          length: 3
          col: 0
          line: (SourceLine line_num:20 content:"var list2 = mylist ++ [4, 5]\n" src:...0x1c81)
        )
      lhs: [(NameType left:(Token id:Id.Expr_Name length:5 col:4 line:...0x1886) name:list2)]
      rhs: 
        (expr.Binary
          op: (Token id:Id.Arith_DPlus length:2 col:19 line:...0x1886)
          left: (expr.Var left:(Token id:Id.Expr_Name length:6 col:12 line:...0x1886) name:mylist)
          right: 
            (expr.List
              left: (Token id:Id.Op_LBracket length:1 col:22 line:...0x1886)
              elts: [
                (expr.Const
                  c: (Token id:Id.Expr_DecInt length:1 col:23 line:...0x1886)
                  val: (value.Int i:4)
                )
                (expr.Const
                  c: (Token id:Id.Expr_DecInt length:1 col:26 line:...0x1886)
                  val: (value.Int i:5)
                )
              ]
              ctx: expr_context.Store
            )
        )
    )
    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          length: 2
          col: 0
          line: (SourceLine line_num:26 content:"pp cell list2\n" src:...0x1c81)
        )
      more_env: []
      words: [
        (CompoundWord parts:[...0x16e2])
        (CompoundWord parts:[(Token id:Id.Lit_Chars length:4 col:3 line:...0x16e6)])
        (CompoundWord parts:[(Token id:Id.Lit_Chars length:5 col:8 line:...0x16e6)])
      ]
      do_fork: T
    )
    (command.ShAssignment
      left: 
        (Token
          id: Id.Lit_VarLike
          length: 5
          col: 0
          line: 
            (SourceLine
              line_num: 28
              content: "str1='shell string'  # traditinoal shell-style assignment\n"
              src: ...0x1c81
            )
        )
      pairs: [
        (AssignPair
          left: ...0x168e
          lhs: (sh_lhs.Name left:...0x168e name:str1)
          op: assign_op.Equal
          rhs: 
            (CompoundWord
              parts: [
                (SingleQuoted
                  left: (Token id:Id.Left_SingleQuote length:1 col:5 line:...0x1692)
                  sval: "shell string"
                  right: (Token id:Id.Right_SingleQuote length:1 col:18 line:...0x1692)
                )
              ]
            )
        )
      ]
    )
    (command.VarDecl
      keyword: 
        (Token
          id: Id.KW_Var
          length: 3
          col: 0
          line: (SourceLine line_num:31 content:"var str2 = \"Oil string\"\n" src:...0x1c81)
        )
      lhs: [(NameType left:(Token id:Id.Expr_Name length:4 col:4 line:...0x160a) name:str2)]
      rhs: 
        (DoubleQuoted
          left: (Token id:Id.Left_DoubleQuote length:1 col:11 line:...0x160a)
          parts: [(Token id:Id.Lit_Chars length:10 col:12 line:...0x160a)]
          right: (Token id:Id.Right_DoubleQuote length:1 col:22 line:...0x160a)
        )
    )
    (command.VarDecl
      keyword: 
        (Token
          id: Id.KW_Var
          length: 3
          col: 0
          line: (SourceLine line_num:33 content:"var str3 = str1 ++ str2\n" src:...0x1c81)
        )
      lhs: [(NameType left:(Token id:Id.Expr_Name length:4 col:4 line:...0x1fee) name:str3)]
      rhs: 
        (expr.Binary
          op: (Token id:Id.Arith_DPlus length:2 col:16 line:...0x1fee)
          left: (expr.Var left:(Token id:Id.Expr_Name length:4 col:11 line:...0x1fee) name:str1)
          right: (expr.Var left:(Token id:Id.Expr_Name length:4 col:19 line:...0x1fee) name:str2)
        )
    )
    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          length: 4
          col: 0
          line: (SourceLine line_num:35 content:"echo \"str3 = $str3\"\n" src:...0x1c81)
        )
      more_env: []
      words: [
        (CompoundWord parts:[...0x1f1e])
        (CompoundWord
          parts: [
            (DoubleQuoted
              left: (Token id:Id.Left_DoubleQuote length:1 col:5 line:...0x1f22)
              parts: [
                (Token id:Id.Lit_Chars length:7 col:6 line:...0x1f22)
                (SimpleVarSub
                  tok: (Token id:Id.VSub_DollarName length:5 col:13 line:...0x1f22)
                )
              ]
              right: (Token id:Id.Right_DoubleQuote length:1 col:18 line:...0x1f22)
            )
          ]
        )
      ]
      do_fork: T
    )
  ]
)
---
(command.CommandList
  children: [
    (command.ShFunction
      name_tok: 
        (Token
          id: Id.Lit_Chars
          length: 4
          col: 0
          line: 
            (SourceLine
              line_num: 19
              content: "argv() {\n"
              src: (source.MainFile path:ysh/testdata/sigil-pairs.sh)
            )
        )
      name: argv
      body: 
        (BraceGroup
          left: (Token id:Id.Lit_LBrace length:1 col:7 line:...0x12b6)
          children: [
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 6
                  col: 2
                  line: 
                    (SourceLine
                      line_num: 20
                      content: "  python -c 'import sys;print(sys.argv[1:])' @ARGV\n"
                      src: ...0x1c81
                    )
                )
              more_env: []
              words: [
                (CompoundWord parts:[...0x126e])
                (CompoundWord
                  parts: [(Token id:Id.Lit_Chars length:2 col:9 line:...0x1276)]
                )
                (CompoundWord
                  parts: [
                    (SingleQuoted
                      left: (Token id:Id.Left_SingleQuote length:1 col:12 line:...0x1276)
                      sval: "import sys;print(sys.argv[1:])"
                      right: (Token id:Id.Right_SingleQuote length:1 col:43 line:...0x1276)
                    )
                  ]
                )
                (CompoundWord
                  parts: [(Token id:Id.Lit_Splice length:5 col:45 line:...0x1276)]
                )
              ]
              do_fork: T
            )
          ]
          right: 
            (Token
              id: Id.Lit_RBrace
              length: 1
              col: 0
              line: (SourceLine line_num:21 content:"}\n" src:...0x1c81)
            )
        )
    )
    (command.ShFunction
      name_tok: 
        (Token
          id: Id.Lit_Chars
          length: 4
          col: 0
          line: (SourceLine line_num:23 content:"show() {\n" src:...0x1c81)
        )
      name: show
      body: 
        (BraceGroup
          left: (Token id:Id.Lit_LBrace length:1 col:7 line:...0x11d2)
          children: [
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 4
                  col: 2
                  line: (SourceLine line_num:24 content:"  echo '====='\n" src:...0x1c81)
                )
              more_env: []
              words: [
                (CompoundWord parts:[...0x1192])
                (CompoundWord
                  parts: [
                    (SingleQuoted
                      left: (Token id:Id.Left_SingleQuote length:1 col:7 line:...0x119a)
                      sval: "====="
                      right: (Token id:Id.Right_SingleQuote length:1 col:13 line:...0x119a)
                    )
                  ]
                )
              ]
              do_fork: T
            )
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 4
                  col: 2
                  line: (SourceLine line_num:25 content:"  argv @ARGV\n" src:...0x1c81)
                )
              more_env: []
              words: [
                (CompoundWord parts:[...0x1136])
                (CompoundWord
                  parts: [(Token id:Id.Lit_Splice length:5 col:7 line:...0x113e)]
                )
              ]
              do_fork: T
            )
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 4
                  col: 2
                  line: (SourceLine line_num:26 content:"  echo\n" src:...0x1c81)
                )
              more_env: []
              words: [(CompoundWord parts:[...0x10f6])]
              do_fork: T
            )
          ]
          right: 
            (Token
              id: Id.Lit_RBrace
              length: 1
              col: 0
              line: (SourceLine line_num:27 content:"}\n" src:...0x1c81)
            )
        )
    )
    (command.VarDecl
      keyword: 
        (Token
          id: Id.KW_Var
          length: 3
          col: 0
          line: (SourceLine line_num:30 content:"var strarray = %(\n" src:...0x1c81)
        )
      lhs: [(NameType left:(Token id:Id.Expr_Name length:8 col:4 line:...0x109e) name:strarray)]
      rhs: 
        (ShArrayLiteral
          left: (Token id:Id.Left_PercentParen length:2 col:15 line:...0x109e)
          words: [
            (CompoundWord
              parts: [
                (Token
                  id: Id.Lit_Chars
                  length: 4
                  col: 4
                  line: 
                    (SourceLine
                      line_num: 31
                      content: "    bare words *.sh {a,b}@example.com 'sq' \"dq ${x:-default}\"\n"
                      src: ...0x1c81
                    )
                )
              ]
            )
            (CompoundWord parts:[(Token id:Id.Lit_Chars length:5 col:9 line:...0x100e)])
            (CompoundWord
              parts: [
                (Token id:Id.Lit_Star length:1 col:15 line:...0x100e)
                (Token id:Id.Lit_Chars length:3 col:16 line:...0x100e)
              ]
            )
            (word.BracedTree
              parts: [
                (word_part.BracedTuple
                  words: [
                    (CompoundWord
                      parts: [(Token id:Id.Lit_Chars length:1 col:21 line:...0x100e)]
                    )
                    (CompoundWord
                      parts: [(Token id:Id.Lit_Chars length:1 col:23 line:...0x100e)]
                    )
                  ]
                )
                (Token id:Id.Lit_Splice length:8 col:25 line:...0x100e)
                (Token id:Id.Lit_Chars length:4 col:33 line:...0x100e)
              ]
            )
            (CompoundWord
              parts: [
                (SingleQuoted
                  left: (Token id:Id.Left_SingleQuote length:1 col:38 line:...0x100e)
                  sval: sq
                  right: (Token id:Id.Right_SingleQuote length:1 col:41 line:...0x100e)
                )
              ]
            )
            (CompoundWord
              parts: [
                (DoubleQuoted
                  left: (Token id:Id.Left_DoubleQuote length:1 col:43 line:...0x100e)
                  parts: [
                    (Token id:Id.Lit_Chars length:3 col:44 line:...0x100e)
                    (BracedVarSub
                      left: (Token id:Id.Left_DollarBrace length:2 col:47 line:...0x100e)
                      token: (Token id:Id.VSub_Name length:1 col:49 line:...0x100e)
                      var_name: x
                      suffix_op: 
                        (suffix_op.Unary
                          op: (Token id:Id.VTest_ColonHyphen length:2 col:50 line:...0x100e)
                          arg_word: 
                            (CompoundWord
                              parts: [(Token id:Id.Lit_Chars length:7 col:52 line:...0x100e)]
                            )
                        )
                      right: (Token id:Id.Right_DollarBrace length:1 col:59 line:...0x100e)
                    )
                  ]
                  right: (Token id:Id.Right_DoubleQuote length:1 col:60 line:...0x100e)
                )
              ]
            )
          ]
          right: 
            (Token
              id: Id.Right_ShArrayLiteral
              length: 1
              col: 0
              line: (SourceLine line_num:32 content:")\n" src:...0x1c81)
            )
        )
    )
    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          length: 4
          col: 0
          line: (SourceLine line_num:34 content:"show @strarray\n" src:...0x1c81)
        )
      more_env: []
      words: [
        (CompoundWord parts:[...0x19aa])
        (CompoundWord parts:[(Token id:Id.Lit_Splice length:9 col:5 line:...0x19ae)])
      ]
      do_fork: T
    )
    (command.VarDecl
      keyword: 
        (Token
          id: Id.KW_Var
          length: 3
          col: 0
          line: (SourceLine line_num:36 content:"var cmd_sub = $(\n" src:...0x1c81)
        )
      lhs: [(NameType left:(Token id:Id.Expr_Name length:7 col:4 line:...0x1962) name:cmd_sub)]
      rhs: 
        (CommandSub
          left_token: (Token id:Id.Left_DollarParen length:2 col:14 line:...0x1962)
          child: 
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 4
                  col: 4
                  line: 
                    (SourceLine
                      line_num: 37
                      content: 
"    echo bare words *.sh {a,b}@example.com 'sq' \"dq ${x:-default}\"\n"
                      src: ...0x1c81
                    )
                )
              more_env: []
              words: [
                (CompoundWord parts:[...0x18ca])
                (CompoundWord
                  parts: [(Token id:Id.Lit_Chars length:4 col:9 line:...0x18d2)]
                )
                (CompoundWord
                  parts: [(Token id:Id.Lit_Chars length:5 col:14 line:...0x18d2)]
                )
                (CompoundWord
                  parts: [
                    (Token id:Id.Lit_Star length:1 col:20 line:...0x18d2)
                    (Token id:Id.Lit_Chars length:3 col:21 line:...0x18d2)
                  ]
                )
                (word.BracedTree
                  parts: [
                    (word_part.BracedTuple
                      words: [
                        (CompoundWord
                          parts: [(Token id:Id.Lit_Chars length:1 col:26 line:...0x18d2)]
                        )
                        (CompoundWord
                          parts: [(Token id:Id.Lit_Chars length:1 col:28 line:...0x18d2)]
                        )
                      ]
                    )
                    (Token id:Id.Lit_Splice length:8 col:30 line:...0x18d2)
                    (Token id:Id.Lit_Chars length:4 col:38 line:...0x18d2)
                  ]
                )
                (CompoundWord
                  parts: [
                    (SingleQuoted
                      left: (Token id:Id.Left_SingleQuote length:1 col:43 line:...0x18d2)
                      sval: sq
                      right: (Token id:Id.Right_SingleQuote length:1 col:46 line:...0x18d2)
                    )
                  ]
                )
                (CompoundWord
                  parts: [
                    (DoubleQuoted
                      left: (Token id:Id.Left_DoubleQuote length:1 col:48 line:...0x18d2)
                      parts: [
                        (Token
                          id: Id.Lit_Chars
                          length: 3
                          col: 49
                          line: ...0x18d2
                        )
                        (BracedVarSub
                          left: (Token id:Id.Left_DollarBrace length:2 col:52 line:...0x18d2)
                          token: (Token id:Id.VSub_Name length:1 col:54 line:...0x18d2)
                          var_name: x
                          suffix_op: 
                            (suffix_op.Unary
                              op: (Token id:Id.VTest_ColonHyphen length:2 col:55 line:...0x18d2)
                              arg_word: 
                                (CompoundWord
                                  parts: [(Token id:Id.Lit_Chars length:7 col:57 line:...0x18d2)]
                                )
                            )
                          right: (Token id:Id.Right_DollarBrace length:1 col:64 line:...0x18d2)
                        )
                      ]
                      right: (Token id:Id.Right_DoubleQuote length:1 col:65 line:...0x18d2)
                    )
                  ]
                )
              ]
              do_fork: T
            )
          right: 
            (Token
              id: Id.Eof_RParen
              length: 1
              col: 0
              line: (SourceLine line_num:38 content:")\n" src:...0x1c81)
            )
        )
    )
    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          length: 4
          col: 0
          line: (SourceLine line_num:40 content:"show $cmd_sub\n" src:...0x1c81)
        )
      more_env: []
      words: [
        (CompoundWord parts:[...0x17a6])
        (CompoundWord
          parts: [(SimpleVarSub tok:(Token id:Id.VSub_DollarName length:8 col:5 line:...0x17aa))]
        )
      ]
      do_fork: T
    )
    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          length: 4
          col: 0
          line: 
            (SourceLine
              line_num: 42
              content: "show $['quoted ' ++ 'words ' ++ \"dq ${x:-default}\"]\n"
              src: ...0x1c81
            )
        )
      more_env: []
      words: [
        (CompoundWord parts:[...0x175e])
        (CompoundWord
          parts: [
            (word_part.ExprSub
              left: (Token id:Id.Left_DollarBracket length:2 col:5 line:...0x1762)
              child: 
                (expr.Binary
                  op: (Token id:Id.Arith_DPlus length:2 col:29 line:...0x1762)
                  left: 
                    (expr.Binary
                      op: (Token id:Id.Arith_DPlus length:2 col:17 line:...0x1762)
                      left: 
                        (SingleQuoted
                          left: (Token id:Id.Left_SingleQuote length:1 col:7 line:...0x1762)
                          sval: "quoted "
                          right: (Token id:Id.Right_SingleQuote length:1 col:15 line:...0x1762)
                        )
                      right: 
                        (SingleQuoted
                          left: (Token id:Id.Left_SingleQuote length:1 col:20 line:...0x1762)
                          sval: "words "
                          right: (Token id:Id.Right_SingleQuote length:1 col:27 line:...0x1762)
                        )
                    )
                  right: 
                    (DoubleQuoted
                      left: (Token id:Id.Left_DoubleQuote length:1 col:32 line:...0x1762)
                      parts: [
                        (Token
                          id: Id.Lit_Chars
                          length: 3
                          col: 33
                          line: ...0x1762
                        )
                        (BracedVarSub
                          left: (Token id:Id.Left_DollarBrace length:2 col:36 line:...0x1762)
                          token: (Token id:Id.VSub_Name length:1 col:38 line:...0x1762)
                          var_name: x
                          suffix_op: 
                            (suffix_op.Unary
                              op: (Token id:Id.VTest_ColonHyphen length:2 col:39 line:...0x1762)
                              arg_word: 
                                (CompoundWord
                                  parts: [(Token id:Id.Lit_Chars length:7 col:41 line:...0x1762)]
                                )
                            )
                          right: (Token id:Id.Right_DollarBrace length:1 col:48 line:...0x1762)
                        )
                      ]
                      right: (Token id:Id.Right_DoubleQuote length:1 col:49 line:...0x1762)
                    )
                )
              right: (Token id:Id.Op_RBracket length:1 col:50 line:...0x1762)
            )
          ]
        )
      ]
      do_fork: T
    )
  ]
)
---
(command.CommandList
  children: [
    (command.ShFunction
      name_tok: 
        (Token
          id: Id.Lit_Chars
          length: 4
          col: 0
          line: 
            (SourceLine
              line_num: 8
              content: "argv() { spec/bin/argv.py \"$@\"; }\n"
              src: (source.MainFile path:ysh/testdata/array-rewrite-2.sh)
            )
        )
      name: argv
      body: 
        (BraceGroup
          left: (Token id:Id.Lit_LBrace length:1 col:7 line:...0x1382)
          children: [
            (command.Sentence
              child: 
                (command.Simple
                  blame_tok: (Token id:Id.Lit_Chars length:4 col:9 line:...0x1382)
                  more_env: []
                  words: [
                    (CompoundWord
                      parts: [
                        ...0x1342
                        (Token
                          id: Id.Lit_Slash
                          length: 1
                          col: 13
                          line: ...0x1382
                        )
                        (Token
                          id: Id.Lit_Chars
                          length: 3
                          col: 14
                          line: ...0x1382
                        )
                        (Token
                          id: Id.Lit_Slash
                          length: 1
                          col: 17
                          line: ...0x1382
                        )
                        (Token
                          id: Id.Lit_Chars
                          length: 7
                          col: 18
                          line: ...0x1382
                        )
                      ]
                    )
                    (CompoundWord
                      parts: [
                        (DoubleQuoted
                          left: (Token id:Id.Left_DoubleQuote length:1 col:26 line:...0x1382)
                          parts: [
                            (SimpleVarSub
                              tok: (Token id:Id.VSub_At length:2 col:27 line:...0x1382)
                            )
                          ]
                          right: (Token id:Id.Right_DoubleQuote length:1 col:29 line:...0x1382)
                        )
                      ]
                    )
                  ]
                  do_fork: T
                )
              terminator: (Token id:Id.Op_Semi length:1 col:30 line:...0x1382)
            )
          ]
          right: (Token id:Id.Lit_RBrace length:1 col:32 line:...0x1382)
        )
    )
    (command.ShAssignment
      left: 
        (Token
          id: Id.Lit_VarLike
          length: 16
          col: 0
          line: (SourceLine line_num:15 content:"CONFIG_HAVE_FOO=yes\n" src:...0x1c81)
        )
      pairs: [
        (AssignPair
          left: ...0x125e
          lhs: (sh_lhs.Name left:...0x125e name:CONFIG_HAVE_FOO)
          op: assign_op.Equal
          rhs: (CompoundWord parts:[(Token id:Id.Lit_Chars length:3 col:16 line:...0x1262)])
        )
      ]
    )
    (command.ShAssignment
      left: 
        (Token
          id: Id.Lit_VarLike
          length: 5
          col: 0
          line: (SourceLine line_num:16 content:"path='/etc/path with spaces'\n" src:...0x1c81)
        )
      pairs: [
        (AssignPair
          left: ...0x1212
          lhs: (sh_lhs.Name left:...0x1212 name:path)
          op: assign_op.Equal
          rhs: 
            (CompoundWord
              parts: [
                (SingleQuoted
                  left: (Token id:Id.Left_SingleQuote length:1 col:5 line:...0x1216)
                  sval: "/etc/path with spaces"
                  right: (Token id:Id.Right_SingleQuote length:1 col:27 line:...0x1216)
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              ]
            )
        )
      ]
    )
    (command.ShAssignment
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        (Token
          id: Id.Lit_VarLike
          length: 6
          col: 0
          line: (SourceLine line_num:17 content:"flags=''\n" src:...0x1c81)
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      pairs: [
        (AssignPair
          left: ...0x11b2
          lhs: (sh_lhs.Name left:...0x11b2 name:flags)
          op: assign_op.Equal
          rhs: 
            (CompoundWord
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                (SingleQuoted
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                  sval: ""
                  right: (Token id:Id.Right_SingleQuote length:1 col:7 line:...0x11b6)
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              ]
            )
        )
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    )
    (command.If
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          id: Id.KW_If
          length: 2
          col: 0
          line: 
            (SourceLine
              line_num: 20
              content: "if [ -n \"${CONFIG_HAVE_FOO}\" ]; then\n"
              src: ...0x1c81
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      arms: [
        (IfArm
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          cond: 
            (condition.Shell
              commands: [
                (command.Sentence
                  child: 
                    (command.Simple
                      blame_tok: (Token id:Id.Lit_LBracket length:1 col:3 line:...0x115e)
                      more_env: []
                      words: [
                        (CompoundWord parts:[...0x1146])
                        (CompoundWord
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                        (CompoundWord
                          parts: [
                            (DoubleQuoted
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                              parts: [
                                (BracedVarSub
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                                  token: (Token id:Id.VSub_Name length:15 col:11 line:...0x115e)
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                                    (Token
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                                      line: ...0x115e
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                        )
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                      do_fork: T
                    )
                  terminator: (Token id:Id.Op_Semi length:1 col:30 line:...0x115e)
                )
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            )
          then_kw: (Token id:Id.KW_Then length:4 col:32 line:...0x115e)
          action: [
            (command.ShAssignment
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                (Token
                  id: Id.Lit_VarLike
                  length: 6
                  col: 2
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                    (SourceLine
                      line_num: 21
                      content: "  flags=\"${flags} --foo=$path\"\n"
                      src: ...0x1c81
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                (AssignPair
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                  lhs: (sh_lhs.Name left:...0x10b6 name:flags)
                  op: assign_op.Equal
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                    (CompoundWord
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                        (DoubleQuoted
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                              token: (Token id:Id.VSub_Name length:5 col:11 line:...0x10be)
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                              right: (Token id:Id.Right_DollarBrace length:1 col:16 line:...0x10be)
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                            (Token
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                              col: 17
                              line: ...0x10be
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                )
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            )
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          then_tok: ...0x10d6
        )
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      else_action: []
      fi_kw: 
        (Token
          id: Id.KW_Fi
          length: 2
          col: 0
          line: (SourceLine line_num:22 content:"fi\n" src:...0x1c81)
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    (command.If
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        (Token
          id: Id.KW_If
          length: 2
          col: 0
          line: 
            (SourceLine
              line_num: 24
              content: "if [ -n \"${CONFIG_HAVE_BAR}\" ]; then\n"
              src: ...0x1c81
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      arms: [
        (IfArm
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            (condition.Shell
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                    (command.Simple
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                      more_env: []
                      words: [
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                        (CompoundWord
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                        (CompoundWord
                          parts: [
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                              parts: [
                                (BracedVarSub
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                                  token: (Token id:Id.VSub_Name length:15 col:11 line:...0x103a)
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                                    (Token
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                                      length: 1
                                      col: 26
                                      line: ...0x103a
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                      do_fork: T
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          then_kw: (Token id:Id.KW_Then length:4 col:32 line:...0x103a)
          action: [
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                (Token
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                  lhs: (sh_lhs.Name left:...0x1a3a name:flags)
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                    (CompoundWord
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                              line: ...0x1a42
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          then_tok: ...0x1a5a
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      fi_kw: 
        (Token
          id: Id.KW_Fi
          length: 2
          col: 0
          line: (SourceLine line_num:26 content:"fi\n" src:...0x1c81)
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          length: 4
          col: 0
          line: 
            (SourceLine
              line_num: 28
              content: "argv ${flags}  # unquoted splitting\n"
              src: ...0x1c81
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        (CompoundWord
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              right: (Token id:Id.Right_DollarBrace length:1 col:12 line:...0x19c2)
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      do_fork: T
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    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          length: 3
          col: 0
          line: (SourceLine line_num:40 content:"set -o errexit\n" src:...0x1c81)
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        (CompoundWord parts:[(Token id:Id.Lit_Chars length:7 col:7 line:...0x18ca)])
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      do_fork: T
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    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          length: 5
          col: 0
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        (CompoundWord parts:[(Token id:Id.Lit_Chars length:16 col:18 line:...0x187e)])
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      do_fork: T
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    (command.Mutation
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        (Token
          id: Id.KW_SetVar
          length: 6
          col: 0
          line: 
            (SourceLine
              line_num: 43
              content: "setvar CONFIG_HAVE_FOO = \"yes\"  # TODO: change to single quotes\n"
              src: ...0x1c81
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        )
      lhs: [(Token id:Id.Expr_Name length:15 col:7 line:...0x181e tval:CONFIG_HAVE_FOO)]
      op: (Token id:Id.Arith_Equal length:1 col:23 line:...0x181e)
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        (DoubleQuoted
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          right: (Token id:Id.Right_DoubleQuote length:1 col:29 line:...0x181e)
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    (command.Mutation
      keyword: 
        (Token
          id: Id.KW_SetVar
          length: 6
          col: 0
          line: 
            (SourceLine
              line_num: 44
              content: "setvar path = \"/etc/path with spaces\"\n"
              src: ...0x1c81
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          right: (Token id:Id.Right_DoubleQuote length:1 col:36 line:...0x173a)
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    (command.Mutation
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        (Token
          id: Id.KW_SetVar
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          line: (SourceLine line_num:45 content:"setvar flags = %()\n" src:...0x1c81)
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    (command.If
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        (Token
          id: Id.KW_If
          length: 2
          col: 0
          line: (SourceLine line_num:47 content:"if test -n $CONFIG_HAVE_FOO; then\n" src:...0x1c81)
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            (condition.Shell
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                    (command.Simple
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          then_kw: (Token id:Id.KW_Then length:4 col:29 line:...0x158e)
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                (Token
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                    (SourceLine
                      line_num: 48
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          then_tok: ...0x1fd6
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      fi_kw: 
        (Token
          id: Id.KW_Fi
          length: 2
          col: 0
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    (command.If
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            (condition.Shell
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                    (command.Simple
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      fi_kw: 
        (Token
          id: Id.KW_Fi
          length: 2
          col: 0
          line: (SourceLine line_num:53 content:"fi\n" src:...0x1c81)
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        (Token
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          col: 0
          line: (SourceLine line_num:55 content:"argv @flags\n" src:...0x1c81)
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      do_fork: T
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)
---
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        (Token
          id: Id.Lit_Chars
          length: 4
          col: 0
          line: 
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              line_num: 8
              content: "argv() { spec/bin/argv.py \"$@\"; }\n"
              src: (source.MainFile path:ysh/testdata/array-rewrite-1.sh)
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        )
      name: argv
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                          line: ...0x137e
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                          line: ...0x137e
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                        (Token
                          id: Id.Lit_Chars
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          length: 6
          col: 0
          line: (SourceLine line_num:14 content:"regex=(old1 old2)\n" src:...0x1c81)
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      pairs: [
        (AssignPair
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          lhs: (sh_lhs.Name left:...0x126a name:regex)
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            (CompoundWord
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                (ShArrayLiteral
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                    (CompoundWord
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                  right: (Token id:Id.Right_ShArrayLiteral length:1 col:16 line:...0x126e)
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    (command.ShAssignment
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        (Token
          id: Id.Lit_VarLike
          length: 6
          col: 0
          line: (SourceLine line_num:15 content:"flags=()\n" src:...0x1c81)
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      pairs: [
        (AssignPair
          left: ...0x11fe
          lhs: (sh_lhs.Name left:...0x11fe name:flags)
          op: assign_op.Equal
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    (command.ForEach
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        (Token
          id: Id.KW_For
          length: 3
          col: 0
          line: (SourceLine line_num:17 content:"for r in \"${regex[@]}\"; do\n" src:...0x1c81)
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      iter_names: [r]
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                    (BracedVarSub
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                      token: (Token id:Id.VSub_Name length:5 col:12 line:...0x11ae)
                      var_name: regex
                      bracket_op: (bracket_op.WholeArray op_id:Id.Lit_At)
                      right: (Token id:Id.Right_DollarBrace length:1 col:20 line:...0x11ae)
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                  right: (Token id:Id.Right_DoubleQuote length:1 col:21 line:...0x11ae)
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              ]
            )
          ]
        )
      semi_tok: (Token id:Id.Op_Semi length:1 col:22 line:...0x11ae)
      body: 
        (command.DoGroup
          left: (Token id:Id.KW_Do length:2 col:24 line:...0x11ae)
          children: [
            (command.ShAssignment
              left: 
                (Token
                  id: Id.Lit_ArrayLhsOpen
                  length: 6
                  col: 2
                  line: 
                    (SourceLine
                      line_num: 18
                      content: "  flags[${#flags[@]}]=\"--regex=$r\"\n"
                      src: ...0x1c81
                    )
                )
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