Oops. Sorry. I didn’t notice that. You’re right. It’s hard-coded to blank:
Sounds like a reasonable feature request to me.
Wait. I was really not paying attention. If there is going to be a hard-coded option, ignoring the user preferences, it should be to open in the same window. That’s what the best practice is. And if the linkified links go to Discouse and not somewhere external then it’s an even more unexpected behavior that they’d open in a new tab.