Foo bar.

Foo bar.

Foo bar.

With embedded [brackets].

Indented once.

Indented twice.

Indented thrice.

Indented [four][] times.

[four]: /url

More multi line edge cases. First a broken link id

link text

Then a line with 2 chars of trailing whitespace and a line break my
University.

The a shortcut reference link with 2 chars of trailing whitespace and a line break my
University.