Say you're using terraform with some poorly designed cloud thing, and you have a linked list of rules which also each needs their own index as an attribute cloudflare/terraform-provider-cloudflare#187. And now you have to insert an item somewhere close to the beginning of your 100 item chain. Do you go edit every number by hand?
#as delimiter (
*as count, (or
\=to specify using a
:%s#priority = \(\d*\)#\=printf("priority = %d", submatch(1)+1)#
one day I will read the entire manual, one day...