Quote protection finally clicks

I wrote a short Raku script that connects to my VPN provider using a
command piactl.  In my first version I used an approach similar to one I've
used many times before, calling out to a shell and being very careful about
shell escaping issues:

run 'bash', '-c', 'piactl disconnect && piactl set region "$1" && piactl
connect', '--', $region;

I happened to browse the Raku docs about quoting constructs, and something
finally clicked about quote protection within « » quotes.  It works like a
shell!

run «bash -c 'piactl disconnect && piactl set region "$1" && piactl
connect' -- "$region"»;

It's just as safe as the first version, but a bit more readable.

At this point I realized that I really didn't need the shell after all.  run
in sink context raises an error, so I could just as well do that at every
step as for the overall chain of calls:

run <piactl disconnect>;
run «piactl set region "$region"»;
run <piactl connect>;

And the quote protection I was so happy to have figured out is slightly
less readable than the plain vanilla alternative:

run <piactl set region>, $region;

I'm glad it's there in case I need it in the future, though.  I'd use it if
there were additional arguments, eg:

run «piactl set region "$region" --force»;