When I enter
a b y [z](https://duckduckgo.com) and
a b y [z](https://duckduckgo.com) as comments, the two comments immediately below this post appear.
Here is a screenshot from Safari 7 on my Mac OS 10.9, in which it removed the space between the
y and the
(In fact, I now notice that it also removed the hypen that usually separates user-name and time.)