================================================================================
Example 491 - https://github.github.com/gfm/#example-491
================================================================================
~~Hi~~ Hello, world!

--------------------------------------------------------------------------------

(inline
  (strikethrough
    (emphasis_delimiter)
    (strikethrough
      (emphasis_delimiter)
      (emphasis_delimiter))
    (emphasis_delimiter)))

================================================================================
Example 492 - https://github.github.com/gfm/#example-492
================================================================================
This ~~has a

new paragraph~~.
(This test does not work here because it relies on block structure)

--------------------------------------------------------------------------------

(inline
  (strikethrough
    (emphasis_delimiter)
    (strikethrough
      (emphasis_delimiter)
      (emphasis_delimiter))
    (emphasis_delimiter)))
