Keeping dice doesn't work with rerolls

Detailed Description of the Problem In Legend of the Five Rings, "L5R", the main mechanic consists of you rolling a number of ten-sided dice, and keeping the highest few. A typical roll might be 4d10!!k3 (it also uses compounding dice). However, there is also another mechanic called emphasis , which lets you re-roll any 1s when you make a roll. These two mechanics do not co-operate within Roll20, it seems; a roll like 10d10!!k5r1 can sometimes produce several 1s among the unkept dice, which should not be the case. Steps to Reproduce the Problem 1. Roll something like the above roll (10d10!!k5r1). 2. Receive 1 or more 1s among the unkept dice. This appears to be caused by Roll20's internal interpreter, and should be unaffected by my setup. (I happen to be on an Android tablet at the moment.)

The 1 displayed is just there to tell you that a 1 was rerolled. It is greyed out to show that it wasn't included. Look at this roll of just 10d10r1 and note that there are 11 dice displayed with the 1 greyed out. Similarly, your roll of 1d10!!k5r1 is showing that a 1 was rolled and rerolled. Note again that one die exploded (16), and there are 11 dice displayed with the 1 greyed out (because it was rerolled) and 4,3,3,3,4 greyed out because they are lower than the other 5 dice.: I think that should clear up the confusion, does that allieveate your concern?

Ah yes, I need to learn how to count, apparently. That does clear it up, thanks!

No problem! =D Now you can teach me something: How did you get that blue text in the original forum post?

I just copied and pasted from the stickied post! You're gonna have to ask Riley about that. However, I did happen upon something else that seems troubling. <a href="http://imgur.com/LywtcES" rel="nofollow">http://imgur.com/LywtcES</a> Five dice rolled, one of them is a 1 and is re-rolled normally. However, the second exploded 10 also resulted in a 1, for a total result of 11. But since the last result was a 1, it seems like it's been re-rolled, which is less than ideal.

Wow, that is less than Ideal. I'd count that as an actual bug and see if Riley has any thoughts. =( I verified that this happens with just the reroll of 1s and exploding compounding dice. And also with reroll 1s and exploding dice (though this might be acceptable):

Yeah, I don't see an obvious problem with exploding dice; the problem comes with compounding and rerolling 10n+1's.

I was playing around with this out of curiousity. I think it's using an order of operations where if you do 10d10r1!! then it will reroll all 1s first and then compound. Tested it out only a few times and didn't see any 11s.

Seems like the order doesn't change the behavior.