Like a gen patch that waits until the next zero crossing to open the gate :)

What closes the gate? Sorry don't have nw.gateplus~ object here. Here's a guess, below. It will only open or close the gate on a zero crossing. Note the comment inside -- it will hold the value when the gate closes, and this is rarely going to be exactly zero. If you do want zero, change the 2nd latch to a multiply object. (You could even add a tiny smoother to that too, to really eliminate all possible clicks).

Here's one with the smoothing:

Thanks Graham!! Can't wait to try this out tonight I'm sure this will work wonders in stuttering and granular effects that I will use with my OWL hardware :)

Btw a toggle opens and closes the gate when using nw.gateplus~

It works great btw. Now I have to try to adapt your code into a version of selector~ with zero crossing awareness :D :0 :()