Is this a BUG REPORT or FEATURE REQUEST? (choose one):

BUG REPORT

Tendermint version (use tendermint version or git rev-parse --verify HEAD if installed from source):

0.16.0-c8a2bdf7

ABCI app (name for built-in, URL for self-written if it's publicly available):

https://github.com/confio/weave
(mycoind)

Merkleeyes version (use git rev-parse --verify HEAD, skip if you don't use it):

Environment:

• OS (e.g. from /etc/os-release): Ubuntu 16.04.4
• Install tools:
• Others:

What happened:

I add tags to my custom app on DeliverTx, and search for them over rpc.
Works well.

I subscribe to those same tags with /subscribe and never get notified.
If I subscribe to all tx with /subscribe, it does work...

What you expected to happen:

I expected the behavior documented in the godoc:

// Tendermint provides a few predefined keys: tm.event, tx.hash and tx.height.
// Note for transactions, you can define additional keys by providing tags with
// DeliverTx response.
//
//		DeliverTx{
//			Tags: []*KVPair{
//				"agent.name": "K",
//			}
//	  }
//
//		tm.event = 'Tx' AND agent.name = 'K'
//		tm.event = 'Tx' AND account.created_at >= TIME 2013-05-03T14:45:00Z
//		tm.event = 'Tx' AND contract.sign_date = DATE 2017-01-01
//		tm.event = 'Tx' AND account.owner CONTAINS 'Igor'

I found nice unit tests for search, which worked well, but not for subscriptions.

How to reproduce it (as minimally and precisely as possible):

You can work through the demo on https://github.com/confio/weave-js/blob/master/README.md

The error is in the last section "Searching and subscribing to tx", of course, you need to run the server locally and create a few tx first....

If I search with query: cash='0918829CE2E3B4F0B1B61EB2309E311CF496199D', I get a list of transactions that modified the wallet belonging to that address.

If I subscribe with query: tm.event = 'Tx' before sending a Tx, I get the tx as desired.

If I subscribe with query tm.event = 'Tx' AND cash='0918829CE2E3B4F0B1B61EB2309E311CF496199D', I never get an event.

Since the given tx matches on search with that string, and clearly generates and event, and we are supposed to be able to subscribe based on the DeliverTx tags, I would expect a callback from this as well.

Anything else do we need to know:

I showed it to @melekes personally, assuming I was doing something wrong and needed another keyword or two, and he said I seemed to be doing it right, but tendermint rpc seemed to have broken.