Subtle changes, bugs and feedback

I think if you use a possessive the @ notification doesn't work. For example @Velocio's name won't be linked here.

The @mention code starts with the @ and ends at the first space.

Punctuation is a valid part of a profile name in many cases, i.e. the name O'Riordan

So punctuation is included in checks for usernames.

I think if you use a possessive the @ notification doesn't work. For example @Velocio's name won't be linked here.

You can do a possesive @ using the little known arsecake html tag:

@arrowplum's things

(that's @arrowplum<arsecake>'s things)