Enable dupword linter & fix findings (#12271)

* Enable dupword linter & fix findings

* Correct an incorrect fix

* Add nolint comment

* Add another nolint comment

* Revert unintended change to bazel version

---------

Co-authored-by: Preston Van Loon <preston@prysmaticlabs.com>
Co-authored-by: Radosław Kapka <rkapka@wp.pl>

.golangci.yml

@@ -17,6 +17,7 @@ linters:
     - errcheck
     - gosimple
     - gocognit
+    - dupword
     - nilerr
     - whitespace
     - misspell

api/client/beacon/checkpoint.go

@@ -126,7 +126,7 @@ type WeakSubjectivityData struct {
 }
 
 // CheckpointString returns the standard string representation of a Checkpoint.
-// The format is a a hex-encoded block root, followed by the epoch of the block, separated by a colon. For example:
+// The format is a hex-encoded block root, followed by the epoch of the block, separated by a colon. For example:
 // "0x1c35540cac127315fabb6bf29181f2ae0de1a3fc909d2e76ba771e61312cc49a:74888"
 func (wsd *WeakSubjectivityData) CheckpointString() string {
 	return fmt.Sprintf("%#x:%d", wsd.BlockRoot, wsd.Epoch)

async/scatter.go

@@ -14,7 +14,7 @@ type WorkerResults struct {
 
 // Scatter scatters a computation across multiple goroutines.
 // This breaks the task in to a number of chunks and executes those chunks in parallel with the function provided.
-// Results returned are collected and presented a a set of WorkerResults, which can be reassembled by the calling function.
+// Results returned are collected and presented as a set of WorkerResults, which can be reassembled by the calling function.
 // Any error that occurs in the workers will be passed back to the calling function.
 func Scatter(inputLen int, sFunc func(int, int, *sync.RWMutex) (interface{}, error)) ([]*WorkerResults, error) {
 	if inputLen <= 0 {

beacon-chain/blockchain/process_block_helpers.go

@@ -64,7 +64,7 @@ func (s *Service) verifyBlkPreState(ctx context.Context, b interfaces.ReadOnlyBe
 	parentRoot := b.ParentRoot()
 	// Loosen the check to HasBlock because state summary gets saved in batches
 	// during initial syncing. There's no risk given a state summary object is just a
-	// a subset of the block object.
+	// subset of the block object.
 	if !s.cfg.BeaconDB.HasStateSummary(ctx, parentRoot) && !s.cfg.BeaconDB.HasBlock(ctx, parentRoot) {
 		return errors.New("could not reconstruct parent state")
 	}

beacon-chain/core/altair/epoch_precompute.go

@@ -208,7 +208,7 @@ func ProcessEpochParticipation(
 }
 
 // ProcessRewardsAndPenaltiesPrecompute processes the rewards and penalties of individual validator.
-// This is an optimized version by passing in precomputed validator attesting records and and total epoch balances.
+// This is an optimized version by passing in precomputed validator attesting records and total epoch balances.
 func ProcessRewardsAndPenaltiesPrecompute(
 	beaconState state.BeaconState,
 	bal *precompute.Balance,

beacon-chain/core/altair/epoch_spec.go

@@ -12,6 +12,7 @@ import (
 
 // ProcessSyncCommitteeUpdates  processes sync client committee updates for the beacon state.
 //
+// nolint:dupword
 // Spec code:
 // def process_sync_committee_updates(state: BeaconState) -> None:
 //
@@ -45,6 +46,7 @@ func ProcessSyncCommitteeUpdates(ctx context.Context, beaconState state.BeaconSt
 
 // ProcessParticipationFlagUpdates processes participation flag updates by rotating current to previous.
 //
+// nolint:dupword
 // Spec code:
 // def process_participation_flag_updates(state: BeaconState) -> None:
 //

beacon-chain/core/epoch/epoch_processing.go

@@ -393,6 +393,7 @@ func ProcessHistoricalDataUpdate(state state.BeaconState) (state.BeaconState, er
 
 // ProcessParticipationRecordUpdates rotates current/previous epoch attestations during epoch processing.
 //
+// nolint:dupword
 // Spec pseudocode definition:
 //
 //	def process_participation_record_updates(state: BeaconState) -> None:

beacon-chain/core/epoch/precompute/reward_penalty.go

@@ -14,7 +14,7 @@ type attesterRewardsFunc func(state.ReadOnlyBeaconState, *Balance, []*Validator)
 type proposerRewardsFunc func(state.ReadOnlyBeaconState, *Balance, []*Validator) ([]uint64, error)
 
 // ProcessRewardsAndPenaltiesPrecompute processes the rewards and penalties of individual validator.
-// This is an optimized version by passing in precomputed validator attesting records and and total epoch balances.
+// This is an optimized version by passing in precomputed validator attesting records and total epoch balances.
 func ProcessRewardsAndPenaltiesPrecompute(
 	state state.BeaconState,
 	pBal *Balance,

beacon-chain/core/helpers/validators.go

@@ -285,6 +285,7 @@ func BeaconProposerIndex(ctx context.Context, state state.ReadOnlyBeaconState) (
 
 // ComputeProposerIndex returns the index sampled by effective balance, which is used to calculate proposer.
 //
+// nolint:dupword
 // Spec pseudocode definition:
 //
 //	def compute_proposer_index(state: BeaconState, indices: Sequence[ValidatorIndex], seed: Bytes32) -> ValidatorIndex:

beacon-chain/rpc/eth/node/node.go

@@ -228,7 +228,7 @@ func (ns *Server) ListPeers(ctx context.Context, req *ethpb.PeersRequest) (*ethp
 	return &ethpb.PeersResponse{Data: filteredPeers}, nil
 }
 
-// PeerCount retrieves retrieves number of known peers.
+// PeerCount retrieves number of known peers.
 func (ns *Server) PeerCount(ctx context.Context, _ *emptypb.Empty) (*ethpb.PeerCountResponse, error) {
 	ctx, span := trace.StartSpan(ctx, "node.PeerCount")
 	defer span.End()

beacon-chain/rpc/prysm/v1alpha1/beacon/validators.go

@@ -183,7 +183,7 @@ func (bs *Server) ListValidatorBalances(
 }
 
 // ListValidators retrieves the current list of active validators with an optional historical epoch flag to
-// to retrieve validator set in time.
+// retrieve validator set in time.
 func (bs *Server) ListValidators(
 	ctx context.Context,
 	req *ethpb.ListValidatorsRequest,

beacon-chain/rpc/prysm/v1alpha1/validator/status.go

@@ -34,7 +34,7 @@ var errParticipation = status.Errorf(codes.Internal, "Failed to obtain epoch par
 //	DEPOSITED - validator's deposit has been recognized by Ethereum 1, not yet recognized by Ethereum.
 //	PENDING - validator is in Ethereum's activation queue.
 //	ACTIVE - validator is active.
-//	EXITING - validator has initiated an an exit request, or has dropped below the ejection balance and is being kicked out.
+//	EXITING - validator has initiated an exit request, or has dropped below the ejection balance and is being kicked out.
 //	EXITED - validator is no longer validating.
 //	SLASHING - validator has been kicked out due to meeting a slashing condition.
 //	UNKNOWN_STATUS - validator does not have a known status in the network.

beacon-chain/slasher/chunks.go

@@ -53,6 +53,8 @@ type Chunker interface {
 // specified epoch and all attestation target epochs a validator has created
 // where att.source.epoch > e.
 //
+// nolint:dupword
+//
 // Under ideal network conditions, where every target epoch immediately follows its source,
 // min spans for a validator will look as follows:
 //

beacon-chain/slasher/doc.go

@@ -1,3 +1,5 @@
+// nolint:dupword
+//
 // Package slasher defines an optimized implementation of Ethereum proof-of-stake slashing
 // detection, namely focused on catching "surround vote" slashable
 // offenses as explained here: https://blog.ethereum.org/2020/01/13/validated-staking-on-eth2-1-incentives/.

beacon-chain/state/state-native/setters_attestation.go

@@ -44,7 +44,7 @@ func (b *BeaconState) setCurrentEpochAttestations(val []*ethpb.PendingAttestatio
 }
 
 // AppendCurrentEpochAttestations for the beacon state. Appends the new value
-// to the the end of list.
+// to the end of list.
 func (b *BeaconState) AppendCurrentEpochAttestations(val *ethpb.PendingAttestation) error {
 	b.lock.Lock()
 	defer b.lock.Unlock()
@@ -74,7 +74,7 @@ func (b *BeaconState) AppendCurrentEpochAttestations(val *ethpb.PendingAttestati
 }
 
 // AppendPreviousEpochAttestations for the beacon state. Appends the new value
-// to the the end of list.
+// to the end of list.
 func (b *BeaconState) AppendPreviousEpochAttestations(val *ethpb.PendingAttestation) error {
 	b.lock.Lock()
 	defer b.lock.Unlock()

beacon-chain/state/state-native/setters_eth1.go

@@ -42,7 +42,7 @@ func (b *BeaconState) SetEth1DepositIndex(val uint64) error {
 }
 
 // AppendEth1DataVotes for the beacon state. Appends the new value
-// to the the end of list.
+// to the end of list.
 func (b *BeaconState) AppendEth1DataVotes(val *ethpb.Eth1Data) error {
 	b.lock.Lock()
 	defer b.lock.Unlock()

beacon-chain/state/state-native/setters_participation.go

@@ -45,7 +45,7 @@ func (b *BeaconState) SetCurrentParticipationBits(val []byte) error {
 }
 
 // AppendCurrentParticipationBits for the beacon state. Appends the new value
-// to the the end of list.
+// to the end of list.
 func (b *BeaconState) AppendCurrentParticipationBits(val byte) error {
 	b.lock.Lock()
 	defer b.lock.Unlock()
@@ -70,7 +70,7 @@ func (b *BeaconState) AppendCurrentParticipationBits(val byte) error {
 }
 
 // AppendPreviousParticipationBits for the beacon state. Appends the new value
-// to the the end of list.
+// to the end of list.
 func (b *BeaconState) AppendPreviousParticipationBits(val byte) error {
 	b.lock.Lock()
 	defer b.lock.Unlock()

beacon-chain/state/state-native/setters_validator.go

@@ -159,7 +159,7 @@ func (b *BeaconState) UpdateSlashingsAtIndex(idx, val uint64) error {
 }
 
 // AppendValidator for the beacon state. Appends the new value
-// to the the end of list.
+// to the end of list.
 func (b *BeaconState) AppendValidator(val *ethpb.Validator) error {
 	b.lock.Lock()
 	defer b.lock.Unlock()
@@ -183,7 +183,7 @@ func (b *BeaconState) AppendValidator(val *ethpb.Validator) error {
 }
 
 // AppendBalance for the beacon state. Appends the new value
-// to the the end of list.
+// to the end of list.
 func (b *BeaconState) AppendBalance(bal uint64) error {
 	b.lock.Lock()
 	defer b.lock.Unlock()

beacon-chain/state/state-native/types_test.go

@@ -37,7 +37,7 @@ func TestBeaconState_ProtoBeaconStateCompatibility(t *testing.T) {
 	require.NoError(t, err)
 	assert.Equal(t, r1, r2, "Mismatched roots")
 
-	// We then write to the the state and compare hash tree roots again.
+	// We then write to the state and compare hash tree roots again.
 	balances := genesis.Balances
 	balances[0] = 3823
 	require.NoError(t, customState.SetBalances(balances))

cmd/prysmctl/checkpointsync/download.go

@@ -65,13 +65,13 @@ func cliActionDownload(_ *cli.Context) error {
 	if err != nil {
 		return err
 	}
-	log.Printf("saved ssz-encoded block to to %s", blockPath)
+	log.Printf("saved ssz-encoded block to %s", blockPath)
 
 	statePath, err := od.SaveState(cwd)
 	if err != nil {
 		return err
 	}
-	log.Printf("saved ssz-encoded state to to %s", statePath)
+	log.Printf("saved ssz-encoded state to %s", statePath)
 
 	return nil
 }

cmd/validator/slashing-protection/export.go

@@ -27,7 +27,7 @@ const (
 // 1. Parse a path to the validator's datadir from the CLI context.
 // 2. Open the validator database.
 // 3. Call the function which actually exports the data from
-// from the validator's db into an EIP standard slashing protection format
+// the validator's db into an EIP standard slashing protection format
 // 4. Format and save the JSON file to a user's specified output directory.
 func exportSlashingProtectionJSON(cliCtx *cli.Context) error {
 	log.Info(

cmd/validator/slashing-protection/import.go

@@ -22,7 +22,7 @@ import (
 // 2. Open the validator database.
 // 3. Read the JSON file from user input.
 // 4. Call the function which actually imports the data from
-// from the standard slashing protection JSON file into our database.
+// the standard slashing protection JSON file into our database.
 func importSlashingProtectionJSON(cliCtx *cli.Context) error {
 	var err error
 	dataDir := cliCtx.String(cmd.DataDirFlag.Name)

cmd/wrap_flags.go

@@ -34,7 +34,7 @@ func WrapFlags(flags []cli.Flag) []cli.Flag {
 			f = altsrc.NewPathFlag(t)
 		case *cli.Int64Flag:
 			// Int64Flag does not work. See https://github.com/prysmaticlabs/prysm/issues/6478
-			panic(fmt.Sprintf("unsupported flag type type %T", f))
+			panic(fmt.Sprintf("unsupported flag type %T", f))
 		case *cli.IntSliceFlag:
 			f = altsrc.NewIntSliceFlag(t)
 		default:

container/leaky-bucket/leakybucket.go

@@ -1,3 +1,4 @@
+//nolint:dupword
 /*
 Package leakybucket implements a scalable leaky bucket algorithm.
 

crypto/bls/bls.go

@@ -1,5 +1,5 @@
 // Package bls implements a go-wrapper around a library implementing the
-// the BLS12-381 curve and signature scheme. This package exposes a public API for
+// BLS12-381 curve and signature scheme. This package exposes a public API for
 // verifying and aggregating BLS signatures used by Ethereum.
 package bls
 

crypto/bls/blst/doc.go

@@ -1,5 +1,5 @@
 // Package blst implements a go-wrapper around a library implementing the
-// the BLS12-381 curve and signature scheme. This package exposes a public API for
+// BLS12-381 curve and signature scheme. This package exposes a public API for
 // verifying and aggregating BLS signatures used by Ethereum.
 //
 // This implementation uses the library written by Supranational, blst.

encoding/ssz/merkleize.go

@@ -8,7 +8,7 @@ import (
 // Merkleize.go is mostly a directly copy of the same filename from
 // https://github.com/protolambda/zssz/blob/master/merkle/merkleize.go.
 // The reason the method is copied instead of imported is due to us using a
-// a custom hasher interface for a reduced memory footprint when using
+// custom hasher interface for a reduced memory footprint when using
 // 'Merkleize'.
 
 const (

hack/interop_start.sh

@@ -74,7 +74,7 @@ done
 
 echo "Converting hex yaml keys to a format that Prysm understands"
 
-# Expect YAML keys in hex encoded format. Convert this into the format the the validator already understands.
+# Expect YAML keys in hex encoded format. Convert this into the format the validator already understands.
 ./convert-keys $YAML_KEY_FILE /tmp/keys.json
 
 echo "Starting beacon chain and logging to $BEACON_LOG_FILE"

io/logs/stream.go

@@ -26,7 +26,7 @@ type Streamer interface {
 	LogsFeed() *event.Feed
 }
 
-// StreamServer defines a a websocket server which can receive events from
+// StreamServer defines a websocket server which can receive events from
 // a feed and write them to open websocket connections.
 type StreamServer struct {
 	feed  *event.Feed
@@ -56,7 +56,7 @@ func (ss *StreamServer) GetLastFewLogs() [][]byte {
 	return messages
 }
 
-// LogsFeed returns a feed callers can subscribe to to receive logs via a channel.
+// LogsFeed returns a feed callers can subscribe to receive logs via a channel.
 func (ss *StreamServer) LogsFeed() *event.Feed {
 	return ss.feed
 }

testing/endtoend/params/params.go

@@ -90,7 +90,7 @@ func (p *params) Logfile(rel ...string) string {
 
 // Eth1RPCURL gives the full url to use to connect to the given eth1 client's RPC endpoint.
 // The `index` param corresponds to the `index` field of the `eth1.Node` e2e component.
-// These are are off by one compared to corresponding beacon nodes, because the miner is assigned index 0.
+// These are off by one compared to corresponding beacon nodes, because the miner is assigned index 0.
 // eg instance the index of the EL instance associated with beacon node index `0` would typically be `1`.
 func (p *params) Eth1RPCURL(index int) *url.URL {
 	return &url.URL{

tools/analyzers/errcheck/analyzer.go

@@ -276,7 +276,7 @@ func namesForExcludeCheck(pass *analysis.Pass, call *ast.CallExpr) []string {
 	}
 
 	// This will be missing for functions without a receiver (like fmt.Printf),
-	// so just fall back to the the function's fullName in that case.
+	// so just fall back to the function's fullName in that case.
 	selection, ok := pass.TypesInfo.Selections[sel]
 	if !ok {
 		return []string{name}

validator/accounts/userprompt/prompt.go

@@ -16,7 +16,7 @@ const (
 	// DataDirDirPromptText for the validator database directory.
 	DataDirDirPromptText = "Enter the directory of the validator database you would like to use"
 	// SlashingProtectionJSONPromptText for the EIP-3076 slashing protection JSON userprompt.
-	SlashingProtectionJSONPromptText = "Enter the the filepath of your EIP-3076 Slashing Protection JSON from your previously used validator client"
+	SlashingProtectionJSONPromptText = "Enter the filepath of your EIP-3076 Slashing Protection JSON from your previously used validator client"
 	// WalletDirPromptText for the wallet.
 	WalletDirPromptText = "Enter a wallet directory"
 	// SelectAccountsDeletePromptText --

validator/client/beacon-api/doppelganger.go

@@ -151,7 +151,7 @@ func (c *beaconApiValidatorClient) checkDoppelGanger(ctx context.Context, in *et
 		indexes[i] = index
 	}
 
-	// Get validators liveness for the the last epoch.
+	// Get validators liveness for the last epoch.
 	// We request a state 1 epoch ago. We are guaranteed to have currentEpoch > 2
 	// since we assume that we are not in phase0.
 	previousEpoch := currentEpoch - 1

validator/db/kv/attester_protection.go

@@ -449,7 +449,7 @@ func (s *Store) saveAttestationRecords(ctx context.Context, atts []*AttestationR
 				return errors.Wrap(err, "could not create signing roots bucket")
 			}
 			if err := signingRootsBucket.Put(targetEpochBytes, att.SigningRoot[:]); err != nil {
-				return errors.Wrapf(err, "could not save signing signing root for epoch %d", att.Target)
+				return errors.Wrapf(err, "could not save signing root for epoch %d", att.Target)
 			}
 			sourceEpochsBucket, err := pkBucket.CreateBucketIfNotExists(attestationSourceEpochsBucket)
 			if err != nil {