Is there a way to search for questions that only have a specific number of tags? Something like
[alpha] tags:1 would be helpful for filtering by tag rather than using
[alpha] -[beta] -[chi] -[delta] -[epsilon].
We don't support this case in search, it's a pretty narrow use case that'd require some indexing changes so it doesn't make sense to support it.
That being said, if you had to extremely good use case we'll definitely entertain the idea...but I'm having trouble picturing a scenario.
Irritation finally prevailed over inertia, so I generalized an existing query in Data Explorer:
And created another: