Vim :noa is a command that runs what you call without autocommands on. This
is typically used when you have some BufWritePre commands for formatting,
most auto formatters are implemented this way in vim. It can be super useful
if you have something like a yaml/json file that you have crafted perfectly how
you want it, maybe it has some source code for a small script or sql embeded
and your formatter wants to turn it into one line. You could get a better
formatter, but for these one off cases that aren’t a big bother to me I run
:noa w.
:noa w