Reroll doubles and add to sum?

Running Tunnels & Trolls. One of the things that keeps happening is people forget to watch for doubles. In TnT doubles on a save/attribute test allow you to roll again and add them to the sum, making seemingly impossible tasks, possible. eg. Right now I use: /r 2d6+@{Str} Rainwater Strength Test Rainwater is the name of the character. Is there a way to have it automatically roll the 2d6 again if doubles come up?

There's no way to do this, unfortunately. If you're rolling dice using the /roll command, you can get it to give you an indicator /roll 2d6m will put a horizontal line above each die when you roll a double, so you at least have a visual reminder.

Thank you!