grep Exception but exclude specific Exception

Question

I am currently matching for "Exception" from a file, and output 10 lines before and after using:

grep -C 10 "[.*Exception"

But now I wish to exclude certain specific Exceptions, say AAAException and BBBException, how could I do it? It can be done via

grep -v "AAAException" | grep -C 10 "[.*Exception"

But if within the file, I have AAAException within 10 lines from some other Exception, that line would not be included in the output, which is not what I want. How can I not match for AAAException, but if it occurred within 10 lines from some other Exception, it will still be included in the output?

Answer 1

If you have grep -P you can specify a negative lookbehind assertion.

grep -C 10 -P '\[.*(?<!AAA|BBB)Exception'