Open all the files in Vim either by starting that way or with something like :args, then :bufdo normal @@ to execute the most recently executed macro on all buf

Open all the files in Vim either by starting that way or with something like :args, then :bufdo normal @@ to execute the most recently executed macro on all buffers. On occasions when I’m doing things more iteratively (because I’m using a few macros and personal judgement), I commonly end up with :wn<Enter> in one of the macros.