Actually, I was trying to match every sentence where 'abc' is not preceding 'nevermind' - every other word is ok.
Negative look-behind works, but I expected a more common combination to work too - something like grouping letters with () to a word, and then ^ to negate the sense. Is there no way to group these letters as a word instead of individual characters?
It's more a matter of curiosity if it can be done with just a simple regexp rather than making it work, otherwise I'd easily solve it with more code.
Thanks! ;)