No events are given to reply from other than wasm submsg

[loloicci]

The comment

cosmwasm/packages/std/src/results/submessages.rs

Line 204 in 1ce73c6

/// with full Cosmos SDK events.

(SubMsgResponse is a field of Reply) says this contains all the SDK events.
However, x/wasm discards events from other than wasm submsg in https://github.com/CosmWasm/wasmd/blob/07c8beea006cd009e0c7b865fb32753f61221e1b/x/wasm/keeper/msg_dispatcher.go#L117 and this is passed to reply in https://github.com/CosmWasm/wasmd/blob/07c8beea006cd009e0c7b865fb32753f61221e1b/x/wasm/keeper/msg_dispatcher.go#L147.

Is it intentional? And if it is, I think the reason should be written in spec and cosmwasm's comment for SubMsgResponse.

[webmaster128]

Thank you for bringing this up. The filtering was added for good reason (which I do not know in detail at this point). We'll update the docs to highlight this. Moving to the cosmwasm repo.

[loloicci]

Thank you @webmaster128 for your reply and for updating the docs! If you know who knows this well, could you give this question or tell this ISSUE to them?

[p0mvn]

This leads to the fact that we charge gas for the attributes but not the events here:
https://github.com/CosmWasm/wasmd/blob/09c49d81d38990d232080069b9804af35d68a1b0/x/wasm/keeper/gas_register.go#L200-L211

What are the reasons for this behavior? If we filter events, should we also filter out their attributes?