need help with script rolls for halfling luck using 5e dnd

running a 5e halfling fighter and trying to figure out how to set up the macro for his attack rolls. with halfling luck he gets to reroll 1's on attack,saves, and ability checks but must take the second result even if it is allso a 1 how would i set up my macro for this thanks any help is appreceated

Is the reroll only for 1? I think [[1d20r1]] will work for the base dice roll Wiki page on dice rolling will have more examples

d20r1 isn't quite correct, because he only gets to reroll once, while r1 will continue rerolling if you continue to get 1s. The dice engine does not have any means to reroll once. You can either roll twice, or the GM can make a rollable table with the correct weights to produce the same odds as rerolling once.

I must have misunderstood it them when I was reading the wiki page. Thanks for clearing it up Brian.

Generally what I've seen most often is to simply hit your macro again if you happen to get a 1 on your die. It would probably get cumbersome, but similar to advantage, I see a lot of folks just keep two rolls in their macro and ignore the second one unless it's relevant. Personal opinion... I find it more enjoyable to roll that one and be able to say, "BAM! I'm a lucky son'of'a... I'm going to re-roll that" (click macro again)