bug: Parser error when forwarding an anonymous block to another function without surrounding with parenthesis (ampersand &)

[alanoliveira]

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-c

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

tree-sitter 0.25.10 (da6fe9beb4f7f67beb75914ca8e0d48ae48d6406)

Describe the bug

When a function receives an anonymous block and forward it to another function without surrounding arguments with parenthesis the generated parsed tree presents an error, however it works fine if the block is named, or the arguments are surrounded by parenthesis.

def ok_with_named_block(x, &a)
  bar x, &a
end

def ok_anonymous_surrounded(x, &)
  bar(x, &)
end

def error_anonymous_not_surrounded(x, &)
  bar x, &
end

Steps To Reproduce/Bad Parse Tree

(program [0, 0] - [3, 0]
  (method [0, 0] - [2, 3]
    name: (identifier [0, 4] - [0, 7])
    parameters: (method_parameters [0, 7] - [0, 13]
      (identifier [0, 8] - [0, 9])
      (block_parameter [0, 11] - [0, 12]))
    body: (body_statement [1, 2] - [1, 10]
      (call [1, 2] - [1, 7]
        method: (identifier [1, 2] - [1, 5])
        arguments: (argument_list [1, 6] - [1, 7]
          (identifier [1, 6] - [1, 7])))
      (ERROR [1, 7] - [1, 10]))))

Expected Behavior/Parse Tree

(program [0, 0] - [3, 0]
  (method [0, 0] - [2, 3]
    name: (identifier [0, 4] - [0, 7])
    parameters: (method_parameters [0, 7] - [0, 13]
      (identifier [0, 8] - [0, 9])
      (block_parameter [0, 11] - [0, 12]))
    body: (body_statement [1, 2] - [1, 11]
      (call [1, 2] - [1, 11]
        method: (identifier [1, 2] - [1, 5])
        arguments: (argument_list [1, 5] - [1, 11]
          (identifier [1, 6] - [1, 7])
          (block_argument [1, 9] - [1, 10]))))))

Repro

def foo(x, &)
  bar x, &
end