========================================
Escape sequence of "\;" [escape_sequence]
=========================================

set(var "It is \; and \"")

---

(source_file
  (normal_command
    (identifier)
    (argument_list
      (argument
        (unquoted_argument))
      (argument
        (quoted_argument
          (quoted_element
            (escape_sequence)
            (escape_sequence)
          )
        )
      )
    )
  )
)