With embedded [brackets].
Indented [four] times.
this should work
So should this.
But not [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.