bug: Error parsing `x, = (2, 3)`

[iuliadmtru]

Did you check existing issues?

• I have read all the tree-sitter docs if it relates to using the parser
• I have searched the existing issues of tree-sitter-julia

Tree-Sitter CLI Version, if relevant (output of tree-sitter --version)

No response

Describe the bug

x, = (2, 3) is valid Julia code. It assigns the first value of the tuple (2) to x and discards the rest. It does the same thing as x, _ = (2, 3). However, the Tree-sitter shows an error after x.

x, y, = (2, 3, 4) is also valid code but shows an error after y.

x, _ = (2, 3, 4) does not error. It produces:

(source_file [0, 0] - [1, 0]
  (assignment [0, 0] - [0, 16]
    (open_tuple [0, 0] - [0, 4]
      (identifier [0, 0] - [0, 1])
      (identifier [0, 3] - [0, 4]))
    (operator [0, 5] - [0, 6])
    (tuple_expression [0, 7] - [0, 16]
      (integer_literal [0, 8] - [0, 9])
      (integer_literal [0, 11] - [0, 12])
      (integer_literal [0, 14] - [0, 15]))))

Steps To Reproduce/Bad Parse Tree

1. echo 'x, = (2, 3)' > demo.jl
2. tree-sitter parse demo.jl

(source_file [0, 0] - [1, 0]
  (open_tuple [0, 0] - [0, 11]
    (identifier [0, 0] - [0, 1])
    (ERROR [0, 3] - [0, 4])
    (tuple_expression [0, 5] - [0, 11]
      (integer_literal [0, 6] - [0, 7])
      (integer_literal [0, 9] - [0, 10]))))

Expected Behavior/Parse Tree

julia> dump(Meta.parse("x, = (2, 3)"))
Expr
  head: Symbol =
  args: Array{Any}((2,))
    1: Expr
      head: Symbol tuple
      args: Array{Any}((1,))
        1: Symbol x
    2: Expr
      head: Symbol tuple
      args: Array{Any}((2,))
        1: Int64 2
        2: Int64 3

I think the Tree-sitter output should be something like:

(source_file [0, 0] - [1, 0]
  (assignment [0, 0] - [0, 14]
    (open_tuple [0, 0] - [0, 2]
      (identifier [0, 0] - [0, 1]))
    (operator [0, 3] - [0, 4])
    (tuple_expression [0, 5] - [0, 11]
      (integer_literal [0, 6] - [0, 7])
      (integer_literal [0, 9] - [0, 10]))))

Repro

No response