Bash: One-liner to exit with the opposite status of a grep command?

Question

How can I reduce the following bash script?

grep -P \"STATUS: (?!Perfect)\" recess.txt && exit 1
exit 0

It seems like I should be able

Answer 1

Just negating the return value doesn't work in a set -e context. But you can do:

! grep -P "STATUS: (?!Perfect)" recess.txt || false