tweak/dice_highest_lowest_mods

Yes - I think you're right provided the ? moves to the end too (which makes better sense).

(([\+\-]?)(\d*)([dD])?(\d+)(([hlHL])(\d+))?)

Indeed. That whole expression is optional, but only all or nothing.

I've pushed that to staging. It should actually change anything, but it's nice to have nice regex.

Irregular regexen are disconcerting. :)

No mention of this Keep Highest/Lowest in the release notes?

It feels like there are others left unmentioned, but this one I know was not in prod a week ago.

That was in the last one.

Ah, my test was on the 3rd, ignore me. :)