ninja: no work to do.
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---
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          col: 0
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                  left: ...0x1a02
                  lhs: (sh_lhs.Name left:...0x1a02 name:flags)
                  op: assign_op.Equal
                  rhs: 
                    (CompoundWord
                      parts: [
                        (DoubleQuoted
                          left: (Token id:Id.Left_DoubleQuote length:1 col:8 line:...0x1a0a)
                          parts: [
                            (BracedVarSub
                              left: (Token id:Id.Left_DollarBrace length:2 col:9 line:...0x1a0a)
                              token: (Token id:Id.VSub_Name length:5 col:11 line:...0x1a0a)
                              var_name: flags
                              right: (Token id:Id.Right_DollarBrace length:1 col:16 line:...0x1a0a)
                            )
                            (Token
                              id: Id.Lit_Chars
                              length: 6
                              col: 17
                              line: ...0x1a0a
                            )
                          ]
                          right: (Token id:Id.Right_DoubleQuote length:1 col:23 line:...0x1a0a)
                        )
                      ]
                    )
                )
              ]
            )
          ]
          then_tok: ...0x1a22
        )
      ]
      else_action: []
      fi_kw: 
        (Token
          id: Id.KW_Fi
          length: 2
          col: 0
          line: (SourceLine line_num:26 content:"fi\n" src:...0x1d5d)
        )
    )
    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          length: 4
          col: 0
          line: 
            (SourceLine
              line_num: 28
              content: "argv ${flags}  # unquoted splitting\n"
              src: ...0x1d5d
            )
        )
      more_env: []
      words: [
        (CompoundWord parts:[...0x1986])
        (CompoundWord
          parts: [
            (BracedVarSub
              left: (Token id:Id.Left_DollarBrace length:2 col:5 line:...0x198a)
              token: (Token id:Id.VSub_Name length:5 col:7 line:...0x198a)
              var_name: flags
              right: (Token id:Id.Right_DollarBrace length:1 col:12 line:...0x198a)
            )
          ]
        )
      ]
      is_last_cmd: F
    )
    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          length: 3
          col: 0
          line: (SourceLine line_num:40 content:"set -o errexit\n" src:...0x1d5d)
        )
      more_env: []
      words: [
        (CompoundWord parts:[...0x188e])
        (CompoundWord parts:[(Token id:Id.Lit_Chars length:2 col:4 line:...0x1892)])
        (CompoundWord parts:[(Token id:Id.Lit_Chars length:7 col:7 line:...0x1892)])
      ]
      is_last_cmd: F
    )
    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          length: 5
          col: 0
          line: (SourceLine line_num:41 content:"shopt -s parse_at simple_word_eval\n" src:...0x1d5d)
        )
      more_env: []
      words: [
        (CompoundWord parts:[...0x1842])
        (CompoundWord parts:[(Token id:Id.Lit_Chars length:2 col:6 line:...0x1846)])
        (CompoundWord parts:[(Token id:Id.Lit_Chars length:8 col:9 line:...0x1846)])
        (CompoundWord parts:[(Token id:Id.Lit_Chars length:16 col:18 line:...0x1846)])
      ]
      is_last_cmd: F
    )
    (command.Mutation
      keyword: 
        (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: ...0x1d5d
            )
        )
      lhs: [(Token id:Id.Expr_Name length:15 col:7 line:...0x17e6 tval:CONFIG_HAVE_FOO)]
      op: (Token id:Id.Arith_Equal length:1 col:23 line:...0x17e6)
      rhs: 
        (DoubleQuoted
          left: (Token id:Id.Left_DoubleQuote length:1 col:25 line:...0x17e6)
          parts: [(Token id:Id.Lit_Chars length:3 col:26 line:...0x17e6)]
          right: (Token id:Id.Right_DoubleQuote length:1 col:29 line:...0x17e6)
        )
    )
    (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: ...0x1d5d
            )
        )
      lhs: [(Token id:Id.Expr_Name length:4 col:7 line:...0x1702 tval:path)]
      op: (Token id:Id.Arith_Equal length:1 col:12 line:...0x1702)
      rhs: 
        (DoubleQuoted
          left: (Token id:Id.Left_DoubleQuote length:1 col:14 line:...0x1702)
          parts: [(Token id:Id.Lit_Chars length:21 col:15 line:...0x1702)]
          right: (Token id:Id.Right_DoubleQuote length:1 col:36 line:...0x1702)
        )
    )
    (command.Mutation
      keyword: 
        (Token
          id: Id.KW_SetVar
          length: 6
          col: 0
          line: (SourceLine line_num:45 content:"setvar flags = %()\n" src:...0x1d5d)
        )
      lhs: [(Token id:Id.Expr_Name length:5 col:7 line:...0x162a tval:flags)]
      op: (Token id:Id.Arith_Equal length:1 col:13 line:...0x162a)
      rhs: 
        (ShArrayLiteral
          left: (Token id:Id.Left_PercentParen length:2 col:15 line:...0x162a)
          words: []
          right: (Token id:Id.Right_ShArrayLiteral length:1 col:17 line:...0x162a)
        )
    )
    (command.If
      if_kw: 
        (Token
          id: Id.KW_If
          length: 2
          col: 0
          line: (SourceLine line_num:47 content:"if test -n $CONFIG_HAVE_FOO; then\n" src:...0x1d5d)
        )
      arms: [
        (IfArm
          keyword: ...0x1552
          cond: 
            (condition.Shell
              commands: [
                (command.Sentence
                  child: 
                    (command.Simple
                      blame_tok: (Token id:Id.Lit_Chars length:4 col:3 line:...0x1556)
                      more_env: []
                      words: [
                        (CompoundWord parts:[...0x1fe6])
                        (CompoundWord
                          parts: [(Token id:Id.Lit_Chars length:2 col:8 line:...0x1556)]
                        )
                        (CompoundWord
                          parts: [
                            (SimpleVarSub
                              tok: (Token id:Id.VSub_DollarName length:16 col:11 line:...0x1556)
                            )
                          ]
                        )
                      ]
                      is_last_cmd: F
                    )
                  terminator: (Token id:Id.Op_Semi length:1 col:27 line:...0x1556)
                )
              ]
            )
          then_kw: (Token id:Id.KW_Then length:4 col:29 line:...0x1556)
          action: [
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 6
                  col: 2
                  line: 
                    (SourceLine
                      line_num: 48
                      content: "  append -- --foo=$path (flags)\n"
                      src: ...0x1d5d
                    )
                )
              more_env: []
              words: [
                (CompoundWord parts:[...0x1f82])
                (CompoundWord
                  parts: [(Token id:Id.Lit_Chars length:2 col:9 line:...0x1f8a)]
                )
                (CompoundWord
                  parts: [
                    (Token id:Id.Lit_Chars length:5 col:12 line:...0x1f8a)
                    (Token id:Id.Lit_Equals length:1 col:17 line:...0x1f8a)
                    (SimpleVarSub
                      tok: (Token id:Id.VSub_DollarName length:5 col:18 line:...0x1f8a)
                    )
                  ]
                )
              ]
              typed_args: 
                (ArgList
                  left: (Token id:Id.Op_LParen length:1 col:24 line:...0x1f8a)
                  pos_args: [
                    (expr.Var
                      left: (Token id:Id.Expr_Name length:5 col:25 line:...0x1f8a)
                      name: flags
                    )
                  ]
                  named_args: []
                  right: (Token id:Id.Op_RParen length:1 col:30 line:...0x1f8a)
                )
              is_last_cmd: F
            )
          ]
          then_tok: ...0x1f9e
        )
      ]
      else_action: []
      fi_kw: 
        (Token
          id: Id.KW_Fi
          length: 2
          col: 0
          line: (SourceLine line_num:49 content:"fi\n" src:...0x1d5d)
        )
    )
    (command.If
      if_kw: 
        (Token
          id: Id.KW_If
          length: 2
          col: 0
          line: (SourceLine line_num:51 content:"if test -n $CONFIG_HAVE_BAR; then\n" src:...0x1d5d)
        )
      arms: [
        (IfArm
          keyword: ...0x1e9a
          cond: 
            (condition.Shell
              commands: [
                (command.Sentence
                  child: 
                    (command.Simple
                      blame_tok: (Token id:Id.Lit_Chars length:4 col:3 line:...0x1e9e)
                      more_env: []
                      words: [
                        (CompoundWord parts:[...0x1e86])
                        (CompoundWord
                          parts: [(Token id:Id.Lit_Chars length:2 col:8 line:...0x1e9e)]
                        )
                        (CompoundWord
                          parts: [
                            (SimpleVarSub
                              tok: (Token id:Id.VSub_DollarName length:16 col:11 line:...0x1e9e)
                            )
                          ]
                        )
                      ]
                      is_last_cmd: F
                    )
                  terminator: (Token id:Id.Op_Semi length:1 col:27 line:...0x1e9e)
                )
              ]
            )
          then_kw: (Token id:Id.KW_Then length:4 col:29 line:...0x1e9e)
          action: [
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 6
                  col: 2
                  line: (SourceLine line_num:52 content:"  append -- --bar (flags)\n" src:...0x1d5d)
                )
              more_env: []
              words: [
                (CompoundWord parts:[...0x1e1e])
                (CompoundWord
                  parts: [(Token id:Id.Lit_Chars length:2 col:9 line:...0x1e26)]
                )
                (CompoundWord
                  parts: [(Token id:Id.Lit_Chars length:5 col:12 line:...0x1e26)]
                )
              ]
              typed_args: 
                (ArgList
                  left: (Token id:Id.Op_LParen length:1 col:18 line:...0x1e26)
                  pos_args: [
                    (expr.Var
                      left: (Token id:Id.Expr_Name length:5 col:19 line:...0x1e26)
                      name: flags
                    )
                  ]
                  named_args: []
                  right: (Token id:Id.Op_RParen length:1 col:24 line:...0x1e26)
                )
              is_last_cmd: F
            )
          ]
          then_tok: ...0x1e3e
        )
      ]
      else_action: []
      fi_kw: 
        (Token
          id: Id.KW_Fi
          length: 2
          col: 0
          line: (SourceLine line_num:53 content:"fi\n" src:...0x1d5d)
        )
    )
    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          length: 4
          col: 0
          line: (SourceLine line_num:55 content:"argv @flags\n" src:...0x1d5d)
        )
      more_env: []
      words: [
        (CompoundWord parts:[...0x1d3e])
        (CompoundWord parts:[(Token id:Id.Lit_Splice length:6 col:5 line:...0x1d42)])
      ]
      is_last_cmd: F
    )
  ]
)
---
skipping ysh/testdata/assign.osh
---
(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:...0x127e)
          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: ...0x1d5d
                    )
                )
              more_env: []
              words: [
                (CompoundWord parts:[...0x1236])
                (CompoundWord
                  parts: [(Token id:Id.Lit_Chars length:2 col:9 line:...0x123e)]
                )
                (CompoundWord
                  parts: [
                    (SingleQuoted
                      left: (Token id:Id.Left_SingleQuote length:1 col:12 line:...0x123e)
                      sval: "import sys;print(sys.argv[1:])"
                      right: (Token id:Id.Right_SingleQuote length:1 col:43 line:...0x123e)
                    )
                  ]
                )
                (CompoundWord
                  parts: [(Token id:Id.Lit_Splice length:5 col:45 line:...0x123e)]
                )
              ]
              is_last_cmd: F
            )
          ]
          right: 
            (Token
              id: Id.Lit_RBrace
              length: 1
              col: 0
              line: (SourceLine line_num:21 content:"}\n" src:...0x1d5d)
            )
        )
    )
    (command.ShFunction
      name_tok: 
        (Token
          id: Id.Lit_Chars
          length: 4
          col: 0
          line: (SourceLine line_num:23 content:"show() {\n" src:...0x1d5d)
        )
      name: show
      body: 
        (BraceGroup
          left: (Token id:Id.Lit_LBrace length:1 col:7 line:...0x119a)
          children: [
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 4
                  col: 2
                  line: (SourceLine line_num:24 content:"  echo '====='\n" src:...0x1d5d)
                )
              more_env: []
              words: [
                (CompoundWord parts:[...0x115a])
                (CompoundWord
                  parts: [
                    (SingleQuoted
                      left: (Token id:Id.Left_SingleQuote length:1 col:7 line:...0x1162)
                      sval: "====="
                      right: (Token id:Id.Right_SingleQuote length:1 col:13 line:...0x1162)
                    )
                  ]
                )
              ]
              is_last_cmd: F
            )
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 4
                  col: 2
                  line: (SourceLine line_num:25 content:"  argv @ARGV\n" src:...0x1d5d)
                )
              more_env: []
              words: [
                (CompoundWord parts:[...0x10fe])
                (CompoundWord
                  parts: [(Token id:Id.Lit_Splice length:5 col:7 line:...0x1106)]
                )
              ]
              is_last_cmd: F
            )
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 4
                  col: 2
                  line: (SourceLine line_num:26 content:"  echo\n" src:...0x1d5d)
                )
              more_env: []
              words: [(CompoundWord parts:[...0x10be])]
              is_last_cmd: F
            )
          ]
          right: 
            (Token
              id: Id.Lit_RBrace
              length: 1
              col: 0
              line: (SourceLine line_num:27 content:"}\n" src:...0x1d5d)
            )
        )
    )
    (command.VarDecl
      keyword: 
        (Token
          id: Id.KW_Var
          length: 3
          col: 0
          line: (SourceLine line_num:30 content:"var strarray = %(\n" src:...0x1d5d)
        )
      lhs: [(NameType left:(Token id:Id.Expr_Name length:8 col:4 line:...0x1066) name:strarray)]
      rhs: 
        (ShArrayLiteral
          left: (Token id:Id.Left_PercentParen length:2 col:15 line:...0x1066)
          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: ...0x1d5d
                    )
                )
              ]
            )
            (CompoundWord parts:[(Token id:Id.Lit_Chars length:5 col:9 line:...0x1a7e)])
            (CompoundWord
              parts: [
                (Token id:Id.Lit_Star length:1 col:15 line:...0x1a7e)
                (Token id:Id.Lit_Chars length:3 col:16 line:...0x1a7e)
              ]
            )
            (word.BracedTree
              parts: [
                (word_part.BracedTuple
                  words: [
                    (CompoundWord
                      parts: [(Token id:Id.Lit_Chars length:1 col:21 line:...0x1a7e)]
                    )
                    (CompoundWord
                      parts: [(Token id:Id.Lit_Chars length:1 col:23 line:...0x1a7e)]
                    )
                  ]
                )
                (Token id:Id.Lit_Splice length:8 col:25 line:...0x1a7e)
                (Token id:Id.Lit_Chars length:4 col:33 line:...0x1a7e)
              ]
            )
            (CompoundWord
              parts: [
                (SingleQuoted
                  left: (Token id:Id.Left_SingleQuote length:1 col:38 line:...0x1a7e)
                  sval: sq
                  right: (Token id:Id.Right_SingleQuote length:1 col:41 line:...0x1a7e)
                )
              ]
            )
            (CompoundWord
              parts: [
                (DoubleQuoted
                  left: (Token id:Id.Left_DoubleQuote length:1 col:43 line:...0x1a7e)
                  parts: [
                    (Token id:Id.Lit_Chars length:3 col:44 line:...0x1a7e)
                    (BracedVarSub
                      left: (Token id:Id.Left_DollarBrace length:2 col:47 line:...0x1a7e)
                      token: (Token id:Id.VSub_Name length:1 col:49 line:...0x1a7e)
                      var_name: x
                      suffix_op: 
                        (suffix_op.Unary
                          op: (Token id:Id.VTest_ColonHyphen length:2 col:50 line:...0x1a7e)
                          arg_word: 
                            (CompoundWord
                              parts: [(Token id:Id.Lit_Chars length:7 col:52 line:...0x1a7e)]
                            )
                        )
                      right: (Token id:Id.Right_DollarBrace length:1 col:59 line:...0x1a7e)
                    )
                  ]
                  right: (Token id:Id.Right_DoubleQuote length:1 col:60 line:...0x1a7e)
                )
              ]
            )
          ]
          right: 
            (Token
              id: Id.Right_ShArrayLiteral
              length: 1
              col: 0
              line: (SourceLine line_num:32 content:")\n" src:...0x1d5d)
            )
        )
    )
    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          length: 4
          col: 0
          line: (SourceLine line_num:34 content:"show @strarray\n" src:...0x1d5d)
        )
      more_env: []
      words: [
        (CompoundWord parts:[...0x1972])
        (CompoundWord parts:[(Token id:Id.Lit_Splice length:9 col:5 line:...0x1976)])
      ]
      is_last_cmd: F
    )
    (command.VarDecl
      keyword: 
        (Token
          id: Id.KW_Var
          length: 3
          col: 0
          line: (SourceLine line_num:36 content:"var cmd_sub = $(\n" src:...0x1d5d)
        )
      lhs: [(NameType left:(Token id:Id.Expr_Name length:7 col:4 line:...0x192a) name:cmd_sub)]
      rhs: 
        (CommandSub
          left_token: (Token id:Id.Left_DollarParen length:2 col:14 line:...0x192a)
          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: ...0x1d5d
                    )
                )
              more_env: []
              words: [
                (CompoundWord parts:[...0x1892])
                (CompoundWord
                  parts: [(Token id:Id.Lit_Chars length:4 col:9 line:...0x189a)]
                )
                (CompoundWord
                  parts: [(Token id:Id.Lit_Chars length:5 col:14 line:...0x189a)]
                )
                (CompoundWord
                  parts: [
                    (Token id:Id.Lit_Star length:1 col:20 line:...0x189a)
                    (Token id:Id.Lit_Chars length:3 col:21 line:...0x189a)
                  ]
                )
                (word.BracedTree
                  parts: [
                    (word_part.BracedTuple
                      words: [
                        (CompoundWord
                          parts: [(Token id:Id.Lit_Chars length:1 col:26 line:...0x189a)]
                        )
                        (CompoundWord
                          parts: [(Token id:Id.Lit_Chars length:1 col:28 line:...0x189a)]
                        )
                      ]
                    )
                    (Token id:Id.Lit_Splice length:8 col:30 line:...0x189a)
                    (Token id:Id.Lit_Chars length:4 col:38 line:...0x189a)
                  ]
                )
                (CompoundWord
                  parts: [
                    (SingleQuoted
                      left: (Token id:Id.Left_SingleQuote length:1 col:43 line:...0x189a)
                      sval: sq
                      right: (Token id:Id.Right_SingleQuote length:1 col:46 line:...0x189a)
                    )
                  ]
                )
                (CompoundWord
                  parts: [
                    (DoubleQuoted
                      left: (Token id:Id.Left_DoubleQuote length:1 col:48 line:...0x189a)
                      parts: [
                        (Token
                          id: Id.Lit_Chars
                          length: 3
                          col: 49
                          line: ...0x189a
                        )
                        (BracedVarSub
                          left: (Token id:Id.Left_DollarBrace length:2 col:52 line:...0x189a)
                          token: (Token id:Id.VSub_Name length:1 col:54 line:...0x189a)
                          var_name: x
                          suffix_op: 
                            (suffix_op.Unary
                              op: (Token id:Id.VTest_ColonHyphen length:2 col:55 line:...0x189a)
                              arg_word: 
                                (CompoundWord
                                  parts: [(Token id:Id.Lit_Chars length:7 col:57 line:...0x189a)]
                                )
                            )
                          right: (Token id:Id.Right_DollarBrace length:1 col:64 line:...0x189a)
                        )
                      ]
                      right: (Token id:Id.Right_DoubleQuote length:1 col:65 line:...0x189a)
                    )
                  ]
                )
              ]
              is_last_cmd: F
            )
          right: 
            (Token
              id: Id.Eof_RParen
              length: 1
              col: 0
              line: (SourceLine line_num:38 content:")\n" src:...0x1d5d)
            )
        )
    )
    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          length: 4
          col: 0
          line: (SourceLine line_num:40 content:"show $cmd_sub\n" src:...0x1d5d)
        )
      more_env: []
      words: [
        (CompoundWord parts:[...0x176e])
        (CompoundWord
          parts: [(SimpleVarSub tok:(Token id:Id.VSub_DollarName length:8 col:5 line:...0x1772))]
        )
      ]
      is_last_cmd: F
    )
    (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: ...0x1d5d
            )
        )
      more_env: []
      words: [
        (CompoundWord parts:[...0x1726])
        (CompoundWord
          parts: [
            (word_part.ExprSub
              left: (Token id:Id.Left_DollarBracket length:2 col:5 line:...0x172a)
              child: 
                (expr.Binary
                  op: (Token id:Id.Arith_DPlus length:2 col:29 line:...0x172a)
                  left: 
                    (expr.Binary
                      op: (Token id:Id.Arith_DPlus length:2 col:17 line:...0x172a)
                      left: 
                        (SingleQuoted
                          left: (Token id:Id.Left_SingleQuote length:1 col:7 line:...0x172a)
                          sval: "quoted "
                          right: (Token id:Id.Right_SingleQuote length:1 col:15 line:...0x172a)
                        )
                      right: 
                        (SingleQuoted
                          left: (Token id:Id.Left_SingleQuote length:1 col:20 line:...0x172a)
                          sval: "words "
                          right: (Token id:Id.Right_SingleQuote length:1 col:27 line:...0x172a)
                        )
                    )
                  right: 
                    (DoubleQuoted
                      left: (Token id:Id.Left_DoubleQuote length:1 col:32 line:...0x172a)
                      parts: [
                        (Token
                          id: Id.Lit_Chars
                          length: 3
                          col: 33
                          line: ...0x172a
                        )
                        (BracedVarSub
                          left: (Token id:Id.Left_DollarBrace length:2 col:36 line:...0x172a)
                          token: (Token id:Id.VSub_Name length:1 col:38 line:...0x172a)
                          var_name: x
                          suffix_op: 
                            (suffix_op.Unary
                              op: (Token id:Id.VTest_ColonHyphen length:2 col:39 line:...0x172a)
                              arg_word: 
                                (CompoundWord
                                  parts: [(Token id:Id.Lit_Chars length:7 col:41 line:...0x172a)]
                                )
                            )
                          right: (Token id:Id.Right_DollarBrace length:1 col:48 line:...0x172a)
                        )
                      ]
                      right: (Token id:Id.Right_DoubleQuote length:1 col:49 line:...0x172a)
                    )
                )
              right: (Token id:Id.Op_RBracket length:1 col:50 line:...0x172a)
            )
          ]
        )
      ]
      is_last_cmd: F
    )
  ]
)
---
(command.CommandList
  children: [
    (command.ShAssignment
      left: 
        (Token
          id: Id.Lit_VarLike
          length: 11
          col: 0
          line: 
            (SourceLine
              line_num: 1
              content: "global_var=global\n"
              src: (source.MainFile path:ysh/testdata/no-dynamic-scope.osh)
            )
        )
      pairs: [
        (AssignPair
          left: ...0x13b6
          lhs: (sh_lhs.Name left:...0x13b6 name:global_var)
          op: assign_op.Equal
          rhs: (CompoundWord parts:[(Token id:Id.Lit_Chars length:6 col:11 line:...0x13be)])
        )
      ]
    )
    (command.ShFunction
      name_tok: 
        (Token
          id: Id.Lit_Chars
          length: 1
          col: 0
          line: (SourceLine line_num:3 content:"g() {\n" src:...0x1d5d)
        )
      name: g
      body: 
        (BraceGroup
          left: (Token id:Id.Lit_LBrace length:1 col:4 line:...0x1366)
          children: [
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 5
                  col: 2
                  line: (SourceLine line_num:4 content:"  local g_var=f\n" src:...0x1d5d)
                )
              more_env: []
              words: [
                (CompoundWord parts:[...0x131a])
                (CompoundWord
                  parts: [
                    (Token id:Id.Lit_VarLike length:6 col:8 line:...0x1322)
                    (Token id:Id.Lit_Chars length:1 col:14 line:...0x1322)
                  ]
                )
              ]
              is_last_cmd: F
            )
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 4
                  col: 2
                  line: (SourceLine line_num:5 content:"  echo $g_var\n" src:...0x1d5d)
                )
              more_env: []
              words: [
                (CompoundWord parts:[...0x12d2])
                (CompoundWord
                  parts: [
                    (SimpleVarSub
                      tok: (Token id:Id.VSub_DollarName length:6 col:7 line:...0x12da)
                    )
                  ]
                )
              ]
              is_last_cmd: F
            )
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 4
                  col: 2
                  line: (SourceLine line_num:6 content:"  echo $f_var\n" src:...0x1d5d)
                )
              more_env: []
              words: [
                (CompoundWord parts:[...0x128e])
                (CompoundWord
                  parts: [
                    (SimpleVarSub
                      tok: (Token id:Id.VSub_DollarName length:6 col:7 line:...0x1296)
                    )
                  ]
                )
              ]
              is_last_cmd: F
            )
            (command.VarDecl
              keyword: 
                (Token
                  id: Id.KW_Var
                  length: 3
                  col: 2
                  line: (SourceLine line_num:8 content:"  var oil_var = global_var\n" src:...0x1d5d)
                )
              lhs: [
                (NameType
                  left: (Token id:Id.Expr_Name length:7 col:6 line:...0x124e)
                  name: oil_var
                )
              ]
              rhs: 
                (expr.Var
                  left: (Token id:Id.Expr_Name length:10 col:16 line:...0x124e)
                  name: global_var
                )
            )
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 4
                  col: 2
                  line: (SourceLine line_num:9 content:"  echo $oil_var\n" src:...0x1d5d)
                )
              more_env: []
              words: [
                (CompoundWord parts:[...0x119a])
                (CompoundWord
                  parts: [
                    (SimpleVarSub
                      tok: (Token id:Id.VSub_DollarName length:8 col:7 line:...0x11a2)
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                )
              ]
              is_last_cmd: F
            )
          ]
          right: 
            (Token
              id: Id.Lit_RBrace
              length: 1
              col: 0
              line: (SourceLine line_num:10 content:"}\n" src:...0x1d5d)
            )
        )
    )
    (command.ShFunction
      name_tok: 
        (Token
          id: Id.Lit_Chars
          length: 1
          col: 0
          line: (SourceLine line_num:12 content:"f() {\n" src:...0x1d5d)
        )
      name: f
      body: 
        (BraceGroup
          left: (Token id:Id.Lit_LBrace length:1 col:4 line:...0x1142)
          children: [
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 5
                  col: 2
                  line: (SourceLine line_num:13 content:"  local f_var=f\n" src:...0x1d5d)
                )
              more_env: []
              words: [
                (CompoundWord parts:[...0x1102])
                (CompoundWord
                  parts: [
                    (Token id:Id.Lit_VarLike length:6 col:8 line:...0x110a)
                    (Token id:Id.Lit_Chars length:1 col:14 line:...0x110a)
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                )
              ]
              is_last_cmd: F
            )
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 4
                  col: 2
                  line: (SourceLine line_num:14 content:"  echo $f_var\n" src:...0x1d5d)
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              more_env: []
              words: [
                (CompoundWord parts:[...0x10ba])
                (CompoundWord
                  parts: [
                    (SimpleVarSub
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                )
              ]
              is_last_cmd: F
            )
            (command.Simple
              blame_tok: 
                (Token
                  id: Id.Lit_Chars
                  length: 1
                  col: 2
                  line: (SourceLine line_num:15 content:"  g\n" src:...0x1d5d)
                )
              more_env: []
              words: [(CompoundWord parts:[...0x107a])]
              is_last_cmd: F
            )
          ]
          right: 
            (Token
              id: Id.Lit_RBrace
              length: 1
              col: 0
              line: (SourceLine line_num:16 content:"}\n" src:...0x1d5d)
            )
        )
    )
    (command.Simple
      blame_tok: 
        (Token
          id: Id.Lit_Chars
          length: 1
          col: 0
          line: (SourceLine line_num:18 content:"f\n" src:...0x1d5d)
        )
      more_env: []
      words: [(CompoundWord parts:[...0x102a])]
      is_last_cmd: F
    )
  ]
)