Comment by plonq

Vim makes multi-cursor even more powerful. You usually don’t need to find the right pattern in cases where the lengths differ as this post describes, because each vim movement applies to each cursor independently. So ‘go to comma’ and ‘change in parentheses’ work as expected on each line.

A common action for me is to use (the equivalent of) cmd+d to select the most obvious repeated symbol then use vim movements from there.