Constant regexp matching

[mxstbr]

Should use constant RegExp matching (like slate-auto-replace) for matching @. (or any other character)

[oyeanuj]

As part of this, could also consider having the trigger be an option (with the default being '@'). I am thinking of cases where one might want to use it for hashtag and it would be a simple drop-in replacement.

[mxstbr]

Yep, for sure. This would be a regexp that you can supply, so it could be a hashtag, an @, whatever. We have that usecase, so that'll definitely be an option!