mIRC's very proud of its full Unicode support, but what about BiDi support?
Most of 2011 software supports it a long time ago, any chance mIRC will also join the prestigious club?

Bi-directional text has been requested before. I'm sure it's something that Khaled is looking into, but as with almost all requests, we don't know timeframes until the request is added.

While waiting for support, it is possible to create your own support through scripting. It will be slower, but it is possible.