('\n---', '}')
{(Id.Lit_RBrace '}')}('\n---', ',')
{(Id.Lit_Comma ',')}('\n---', 'B-{a,b}-E')
{(B-) (Id.Lit_LBrace '{') (a) (Id.Lit_Comma ',') (b) (Id.Lit_RBrace '}') (-E)}(word.BracedTree
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.BracedTuple
      words: [
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:a span_id:2))]
        )
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:b span_id:4))]
        )
      ]
    )
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:6))
  ]
)--
('\n---', 'B-{a"a",b"b",c"c"}-E')
{(B-) (Id.Lit_LBrace '{') (a) (DQ (a)) (Id.Lit_Comma ',') (b) (DQ (b)) (Id.Lit_Comma ',') (c) (DQ (c)) 
  (Id.Lit_RBrace '}') (-E)
}(word.BracedTree
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.BracedTuple
      words: [
        (compound_word
          parts: [
            (word_part.Literal token:(Token id:Id.Lit_Chars val:a span_id:2))
            (double_quoted
              left: (Token id:Id.Left_DoubleQuote val:'"' span_id:3)
              parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:a span_id:4))]
              spids: [3 5]
            )
          ]
        )
        (compound_word
          parts: [
            (word_part.Literal token:(Token id:Id.Lit_Chars val:b span_id:7))
            (double_quoted
              left: (Token id:Id.Left_DoubleQuote val:'"' span_id:8)
              parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:b span_id:9))]
              spids: [8 10]
            )
          ]
        )
        (compound_word
          parts: [
            (word_part.Literal token:(Token id:Id.Lit_Chars val:c span_id:12))
            (double_quoted
              left: (Token id:Id.Left_DoubleQuote val:'"' span_id:13)
              parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:c span_id:14))]
              spids: [13 15]
            )
          ]
        )
      ]
    )
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:17))
  ]
)--
('\n---', 'B-{a,b}--{c,d}-E')
{(B-) (Id.Lit_LBrace '{') (a) (Id.Lit_Comma ',') (b) (Id.Lit_RBrace '}') (--) (Id.Lit_LBrace '{') (c) 
  (Id.Lit_Comma ',') (d) (Id.Lit_RBrace '}') (-E)
}(word.BracedTree
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.BracedTuple
      words: [
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:a span_id:2))]
        )
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:b span_id:4))]
        )
      ]
    )
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-- span_id:6))
    (word_part.BracedTuple
      words: [
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:c span_id:8))]
        )
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:d span_id:10))]
        )
      ]
    )
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:12))
  ]
)--
('\n---', 'B-{a,b,c,={d,e}}-E')
{(B-) (Id.Lit_LBrace '{') (a) (Id.Lit_Comma ',') (b) (Id.Lit_Comma ',') (c) (Id.Lit_Comma ',') 
  (Id.Lit_Equals '=') (Id.Lit_LBrace '{') (d) (Id.Lit_Comma ',') (e) (Id.Lit_RBrace '}') (Id.Lit_RBrace '}') (-E)
}(word.BracedTree
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.BracedTuple
      words: [
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:a span_id:2))]
        )
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:b span_id:4))]
        )
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:c span_id:6))]
        )
        (compound_word
          parts: [
            (word_part.Literal token:(Token id:Id.Lit_Equals val:'=' span_id:8))
            (word_part.BracedTuple
              words: [
     .           (compound_word
                  parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:d span_id:10))]
                )
                (compound_word
                  parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:e span_id:12))]
                )
              ]
            )
          ]
        )
      ]
    )
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:15))
  ]
)('\n---', 'B-{a,={b,c}=,d}-E')
{(B-) (Id.Lit_LBrace '{') (a) (Id.Lit_Comma ',') (Id.Lit_Equals '=') (Id.Lit_LBrace '{') (b) 
  (Id.Lit_Comma ',') (c) (Id.Lit_RBrace '}') (Id.Lit_Equals '=') (Id.Lit_Comma ',') (d) (Id.Lit_RBrace '}') (-E)
}(word.BracedTree
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.BracedTuple
      words: [
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:a span_id:2))]
        )
        (compound_word
          parts: [
            (word_part.Literal token:(Token id:Id.Lit_Equals val:'=' span_id:4))
            (word_part.BracedTuple
              words: [
                (compound_word
                  parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:b span_id:6))]
                )
                (compound_word
                  parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:c span_id:8))]
                )
              ]
            )
            (word_part.Literal token:(Token id:Id.Lit_Equals val:'=' span_id:10))
          ]
        )
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:d span_id:12))]
        )
      ]
    )
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:14))
  ]
)(compound_word parts:[(word_part.Literal token:(Token id:Id.Lit_Chars val:a span_id:2))])('\n---', '{a,b,}')
{(Id.Lit_LBrace '{') (a) (Id.Lit_Comma ',') (b) (Id.Lit_Comma ',') (Id.Lit_RBrace '}')}(word.BracedTree
  parts: [
    (word_part.BracedTuple
      words: [
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:a span_id:1))]
        )
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:b span_id:3))]
        )
        (compound_word)
      ]
    )
  ]
)('\n---', 'hi')
{(hi)}(compound_word parts:[(word_part.Literal token:(Token id:Id.Lit_Chars val:hi span_id:0))])
('\n---', 'B-{a,b}-E')
{(B-) (Id.Lit_LBrace '{') (a) (Id.Lit_Comma ',') (b) (Id.Lit_RBrace '}') (-E)}(word.BracedTree
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.BracedTuple
      words: [
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:a span_id:2))]
        )
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:b span_id:4))]
        )
      ]
    )
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:6))
  ]
)(compound_word
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:a span_id:2))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:6))
  ]
)
(compound_word
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:b span_id:4))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:6))
  ]
)
('\n---', 'B-{a,={b,c,d}=,e}-E')
{(B-) (Id.Lit_LBrace '{') (a) (Id.Lit_Comma ',') (Id.Lit_Equals '=') (Id.Lit_LBrace '{') (b) 
  (Id.Lit_Comma ',') (c) (Id.Lit_Comma ',') (d) (Id.Lit_RBrace '}') (Id.Lit_Equals '=') (Id.Lit_Comma ',') (e) 
  (Id.Lit_RBrace '}') (-E)
}(word.BracedTree
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.BracedTuple
      words: [
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:a span_id:2))]
        )
        (compound_word
          parts: [
            (word_part.Literal token:(Token id:Id.Lit_Equals val:'=' span_id:4))
            (word_part.BracedTuple
              words: [
                (compound_word
                  parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:b span_id:6))]
                )
                (compound_word
                  parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:c span_id:8))]
                )
                (compound_word
                  parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:d span_id:10))]
                )
              ]
            )
            (word_part.Literal token:(Token id:Id.Lit_Equals val:'=' span_id:12))
          ]
        )
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:e span_id:14))]
        )
      ]
    )
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:16))
  ]
)(compound_word
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:a span_id:2))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:16))
  ]
)
(compound_word
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.Literal token:(Token id:Id.Lit_Equals val:'=' span_id:4))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:b span_id:6))
    (word_part.Literal token:(Token id:Id.Lit_Equals val:'=' span_id:12))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:16))
  ]
)
(compound_word
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.Literal token:(Token id:Id.Lit_Equals val:'=' span_id:4))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:c span_id:8))
    (word_part.Literal token:(Token id:Id.Lit_Equals val:'=' span_id:12))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:16))
  ]
)
(compound_word
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.Literal token:(Token id:Id.Lit_Equals val:'=' span_id:4))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:d span_id:10))
    (word_part.Literal token:(Token id:Id.Lit_Equals val:'=' span_id:12))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:16))
  ]
)
(compound_word
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:e span_id:14))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:16))
  ]
)
('\n---', 'B-{a,b}-{c,d}-E')
{(B-) (Id.Lit_LBrace '{') (a) (Id.Lit_Comma ',') (b) (Id.Lit_RBrace '}') (-) (Id.Lit_LBrace '{') (c) 
  (Id.Lit_Comma ',') (d) (Id.Lit_RBrace '}') (-E)
}(word.BracedTree
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.BracedTuple
      words: [
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:a span_id:2))]
        )
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:b span_id:4))]
        )
      ]
    )
    (word_part.Literal token:(Token id:Id.Lit_Chars val:- span_id:6))
    (word_part.BracedTuple
      words: [
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:c span_id:8))]
        )
        (compound_word
          parts: [(word_part.Literal token:(Token id:Id.Lit_Chars val:d span_id:10))]
        )
      ]
    )
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:12))
  ]
)(compound_word
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:a span_id:2))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:- span_id:6))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:c span_id:8))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:12))
  ]
)
(compound_word
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:a span_id:2))
    (word_part.Literal token:(Token .''	None
'1'	None
'1..'	None
'1'	(word_part.BracedRange kind:Id.Range_Int start:1 end:3 step:1 spids:[None])
'3'	(word_part.BracedRange kind:Id.Range_Int start:3 end:-10 step:-2 spids:[None])
'3..-10..-2..'	None
'a'	None
'a..'	None
'a'	(word_part.BracedRange kind:Id.Range_Char start:a end:z step:1 spids:[None])
'a..z..'	None
'z'	(word_part.BracedRange kind:Id.Range_Char start:z end:a step:-1 spids:[None])
.
----------------------------------------------------------------------
Ran 3 tests in 0.015s

OK
id:Id.Lit_Chars val:- span_id:6))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:d span_id:10))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:12))
  ]
)
(compound_word
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:b span_id:4))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:- span_id:6))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:c span_id:8))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:12))
  ]
)
(compound_word
  parts: [
    (word_part.Literal token:(Token id:Id.Lit_Chars val:B- span_id:0))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:b span_id:4))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:- span_id:6))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:d span_id:10))
    (word_part.Literal token:(Token id:Id.Lit_Chars val:-E span_id:12))
  ]
)