Search by tag and tag substring returns no results

[mrkvon]

Hello!

Bug

When I send REQ with #t: ['photography'], I receive plenty of results. But if I send #t: ['photography', 'photogr'], the results are empty. For some reason, the unmatched substring tag cancels matched full tag.

Sending REQ #t: ['photo', 'photography'] returns results with photo tag, results with both tags, but doesn't return results with photography only.

The same happened with #g tag (geohash).

Expected results

When I send REQ with #t: ['photography', 'photogr'], I would expect to receive events with ['t': 'photography'] tag.

Context

I tested and reproduced this issue against relays wss://relay.damus.io, wss://nostr.wine, wss://relayable.org with issues.
Tested against wss://lightningrelay.com which uses different software, without issues.

It looks like the issue is with this software, but I'm not sure.

Used nostr-tools to send the requests.

Thank you!

[hoytech]

Yeah I'm pretty sure this is a bug, thanks for reporting! I think I know the problem and I'll try to fix it for next release.

[hoytech]

I fixed this in the following commit which will be included in the next major strfry release (1.0 series).

77b208e

The bug was an error in an optimisation related to the prefix matching of ids/authors filters which incorrectly applied to tags as well. I rolled the fix into a big refactor where prefix matching was removed altogether (since this feature was also removed from NIP-01).