==================
UPDATE with line markers
==================

UPDATE FILE "/app/main.py"
INSERT AFTER LINE 5
WITH CONTENT "...";

UPDATE FILE "/app/main.py"
INSERT AFTER 5
WITH CONTENT "...";

UPDATE FILE "/app/main.py"
INSERT AFTER LINE REGEX ".."
WITH CONTENT "...";

UPDATE FILE "/app/main.py"
INSERT AFTER REGEX ".."
WITH CONTENT "...";

UPDATE FILE "/app/main.py"
INSERT AFTER LINE PREFIX ".."
WITH CONTENT "...";

UPDATE FILE "/app/main.py"
INSERT AFTER LINE SUFFIX ".."
WITH CONTENT "...";

 ---

(source_file
  (update_command
    (singlefile_clause
      (string
        (single_quoted_string)))
    (insert_clause
      (relpos_bai
        (relpos_beforeafter
          (marker
            (line_matcher
              (line_base
                (number)))))))
    (content_literal
      (string
        (single_quoted_string))))
  (command_separator)
  (update_command
    (singlefile_clause
      (string
        (single_quoted_string)))
    (insert_clause
      (relpos_bai
        (relpos_beforeafter
          (marker
            (line_matcher
              (line_base
                (number)))))))
    (content_literal
      (string
        (single_quoted_string))))
  (command_separator)
  (update_command
    (singlefile_clause
      (string
        (single_quoted_string)))
    (insert_clause
      (relpos_bai
        (relpos_beforeafter
          (marker
            (line_matcher
              (line_base
                (string
                  (single_quoted_string))))))))
    (content_literal
      (string
        (single_quoted_string))))
  (command_separator)
  (update_command
    (singlefile_clause
      (string
        (single_quoted_string)))
    (insert_clause
      (relpos_bai
        (relpos_beforeafter
          (marker
            (line_matcher
              (line_base
                (string
                  (single_quoted_string))))))))
    (content_literal
      (string
        (single_quoted_string))))
  (command_separator)
  (update_command
    (singlefile_clause
      (string
        (single_quoted_string)))
    (insert_clause
      (relpos_bai
        (relpos_beforeafter
          (marker
            (line_matcher
              (line_base
                (string
                  (single_quoted_string))))))))
    (content_literal
      (string
        (single_quoted_string))))
  (command_separator)
  (update_command
    (singlefile_clause
      (string
        (single_quoted_string)))
    (insert_clause
      (relpos_bai
        (relpos_beforeafter
          (marker
            (line_matcher
              (line_base
                (string
                  (single_quoted_string))))))))
    (content_literal
      (string
        (single_quoted_string))))
  (command_separator))
