I am curious if a question should be edited to have a tag removed in the following situation:
The hypothetical question is tagged as a PHP/LibraryX question, in which the user is experiencing some behavior. The answer is revealed to be an issue with RegEx/PHP and not something having to do with the library at all.
As a result, when searching for the Library and reading this answer, I'm given a false positive. I am curious if this is worth re-tagging, since the problem isn't actually one with the knowledgebase.
Follow up bonus question. Should questions have tags added to them based on their answers? I'm thinking for Archival purposes.