Foo bar.

    Foo bar.

    Foo bar.

    With embedded [brackets].

    Indented once.

    Indented twice.

    Indented thrice.

    Indented [four][] times.

    1. [four]: /url

    this should work

    So should this.

    And this.

    And this.

    And this.

    But not [that] [].

    Nor [that][].

    Nor [that].

    [Something in brackets like this should work]

    [Same with this.]

    In this case, this points to something else.

    Backslashing should suppress [this] and [this].

    Here's one where the link breaks across lines.

    Here's another where the link breaks across lines, but with a line-ending space.