fix: Correctly populate legacy Vote.Option field

CHANGELOG.md

@@ -162,6 +162,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * (x/bank) [\#9229](https://github.com/cosmos/cosmos-sdk/pull/9229) Now zero coin balances cannot be added to balances & supply stores. If any denom becomes zero corresponding key gets deleted from store.
 * (types) [\#9511](https://github.com/cosmos/cosmos-sdk/pull/9511) Change `maxBitLen` of `sdk.Int` and `sdk.Dec`  to handle max ERC20 value.
 * (keyring) [\#9562](https://github.com/cosmos/cosmos-sdk/pull/9563) fix keyring kwallet backend when using with empty wallet.
+* (keyring) [\#9583](https://github.com/cosmos/cosmos-sdk/pull/9583) Fix correct population of legacy `Vote.Option` field for votes with 1 VoteOption of weight 1.
 
 
 ### Deprecated

docs/core/proto-docs.md

@@ -4987,7 +4987,7 @@ A Vote consists of a proposal ID, the voter, and the vote option.
 | ----- | ---- | ----- | ----------- |
 | `proposal_id` | [uint64](#uint64) |  |  |
 | `voter` | [string](#string) |  |  |
-| `option` | [VoteOption](#cosmos.gov.v1beta1.VoteOption) |  | **Deprecated.** Deprecated: Prefer to use `options` instead. This field is set in queries if an only if `len(options) == 1` and that option has weight 1. In all other cases, this field will default to OptionEmpty. |
+| `option` | [VoteOption](#cosmos.gov.v1beta1.VoteOption) |  | **Deprecated.** Deprecated: Prefer to use `options` instead. This field is set in queries if and only if `len(options) == 1` and that option has weight 1. In all other cases, this field will default to VOTE_OPTION_UNSPECIFIED. |
 | `options` | [WeightedVoteOption](#cosmos.gov.v1beta1.WeightedVoteOption) | repeated |  |
 
 

proto/cosmos/gov/v1beta1/gov.proto

@@ -133,7 +133,7 @@ message Vote {
   string voter       = 2;
   // Deprecated: Prefer to use `options` instead. This field is set in queries
   // if and only if `len(options) == 1` and that option has weight 1. In all
-  // other cases, this field will default to OptionEmpty.
+  // other cases, this field will default to VOTE_OPTION_UNSPECIFIED.
   VoteOption                  option  = 3 [deprecated = true];
   repeated WeightedVoteOption options = 4 [(gogoproto.nullable) = false];
 }

x/gov/keeper/grpc_query.go

@@ -142,6 +142,7 @@ func (q Keeper) Votes(c context.Context, req *types.QueryVotesRequest) (*types.Q
 		if err := q.cdc.Unmarshal(value, &vote); err != nil {
 			return err
 		}
+		populateLegacyOption(&vote)
 
 		votes = append(votes, vote)
 		return nil

x/gov/keeper/grpc_query_test.go

@@ -395,8 +395,8 @@ func (suite *KeeperTestSuite) TestGRPCQueryVotes() {
 				app.GovKeeper.SetProposal(ctx, proposal)
 
 				votes = []types.Vote{
-					{ProposalId: proposal.ProposalId, Voter: addrs[0].String(), Options: types.NewNonSplitVoteOption(types.OptionAbstain)},
-					{ProposalId: proposal.ProposalId, Voter: addrs[1].String(), Options: types.NewNonSplitVoteOption(types.OptionYes)},
+					{ProposalId: proposal.ProposalId, Voter: addrs[0].String(), Option: types.OptionAbstain, Options: types.NewNonSplitVoteOption(types.OptionAbstain)},
+					{ProposalId: proposal.ProposalId, Voter: addrs[1].String(), Option: types.OptionYes, Options: types.NewNonSplitVoteOption(types.OptionYes)},
 				}
 				accAddr1, err1 := sdk.AccAddressFromBech32(votes[0].Voter)
 				accAddr2, err2 := sdk.AccAddressFromBech32(votes[1].Voter)