On Tue, May 10, 2022 at 06:19:38PM -0600, Philip Prindeville wrote: > See my original message. > > I can't think of a single way to match each header, and then test for any of > them not matching the pattern...
Simply use regex negative lookahead. ALL =~ /^(?!Foo|Bar):/m It will hit any line _not_ starting with Foo: or Bar:
