difftastic/vendored_parsers/tree-sitter-hack/test/cases/expressions/binary-with-strings.exp

(script
  (expression_statement
    (binary_expression
      left: (string)
      right: (binary_expression
        left: (binary_expression
          left: (string)
          right: (binary_expression
            left: (string)
            right: (string)))
        right: (binary_expression
          left: (binary_expression
            left: (string)
            right: (string))
          right: (binary_expression
            left: (binary_expression
              left: (binary_expression
                left: (binary_expression
                  left: (string)
                  right: (string))
                right: (string))
              right: (string))
            right: (binary_expression
              left: (binary_expression
                left: (binary_expression
                  left: (binary_expression
                    left: (binary_expression
                      left: (string)
                      right: (string))
                    right: (string))
                  right: (string))
                right: (string))
              right: (binary_expression
                left: (binary_expression
                  left: (string)
                  right: (string))
                right: (binary_expression
                  left: (binary_expression
                    left: (binary_expression
                      left: (string)
                      right: (string))
                    right: (string))
                  right: (binary_expression
                    left: (binary_expression
                      left: (binary_expression
                        left: (string)
                        right: (string))
                      right: (string))
                    right: (binary_expression
                      left: (string)
                      right: (string))))))))))))