multi: fix typos in comments

chancloser.go

@@ -20,7 +20,7 @@ var (
 	ErrChanAlreadyClosing = fmt.Errorf("channel shutdown already initiated")
 
 	// ErrChanCloseNotFinished is returned when a caller attempts to access
-	// a field or function that is continent on the channel closure
+	// a field or function that is contingent on the channel closure
 	// negotiation already being completed.
 	ErrChanCloseNotFinished = fmt.Errorf("close negotiation not finished")
 
@@ -36,8 +36,8 @@ var (
 type closeState uint8
 
 const (
-	// closeIdle is the initial starting state. In this state, the stat
+	// closeIdle is the initial starting state. In this state, the state
-	// machine has been instantiated, but not state transitions have been
+	// machine has been instantiated, but no state transitions have been
 	// attempted. If a state machine receives a message while in this
 	// state, then it is the responder to an initiated cooperative channel
 	// closure.
@@ -51,16 +51,16 @@ const (
 	closeShutdownInitiated
 
 	// closeFeeNegotiation is the third, and most persistent state. Both
-	// parties enter this state after they've sent and receive a shutdown
+	// parties enter this state after they've sent and received a shutdown
 	// message. During this phase, both sides will send monotonically
 	// increasing fee requests until one side accepts the last fee rate
 	// offered by the other party. In this case, the party will broadcast
 	// the closing transaction, and send the accepted fee to the remote
-	// party. This then causes a shift into the close finished state.
+	// party. This then causes a shift into the closeFinished state.
 	closeFeeNegotiation
 
 	// closeFinished is the final state of the state machine. In this,
-	// state, a side has accepted a fee offer and has broadcast the valid
+	// state a side has accepted a fee offer and has broadcast the valid
 	// closing transaction to the network. During this phase, the closing
 	// transaction becomes available for examination.
 	closeFinished
@@ -192,7 +192,7 @@ func newChannelCloser(cfg chanCloseCfg, deliveryScript []byte,
 	}
 }
 
-// initChanShutdown beings the shutdown process by un-registering the channel,
+// initChanShutdown begins the shutdown process by un-registering the channel,
 // and creating a valid shutdown message to our target delivery address.
 func (c *channelCloser) initChanShutdown() (*lnwire.Shutdown, error) {
 	// With both items constructed we'll now send the shutdown message for
@@ -203,7 +203,7 @@ func (c *channelCloser) initChanShutdown() (*lnwire.Shutdown, error) {
 	// TODO(roasbeef): err if channel has htlc's?
 
 	// Before returning the shutdown message, we'll unregister the channel
-	// to ensure that it isn't see as usable within the system.
+	// to ensure that it isn't seen as usable within the system.
 	//
 	// TODO(roasbeef): fail if err?
 	c.cfg.unregisterChannel(c.cid)
@@ -214,8 +214,8 @@ func (c *channelCloser) initChanShutdown() (*lnwire.Shutdown, error) {
 }
 
 // ShutdownChan is the first method that's to be called by the initiator of the
-// cooperative channel closure. This message returns the shutdown message to to
+// cooperative channel closure. This message returns the shutdown message to
-// sent to the remote party. Upon completion, we enter the
+// send to the remote party. Upon completion, we enter the
 // closeShutdownInitiated phase as we await a response.
 func (c *channelCloser) ShutdownChan() (*lnwire.Shutdown, error) {
 	// If we attempt to shutdown the channel for the first time, and we're
@@ -289,7 +289,7 @@ func (c *channelCloser) ProcessCloseMsg(msg lnwire.Message) ([]lnwire.Message, b
 		// transaction.
 		c.remoteDeliveryScript = shutDownMsg.Address
 
-		// We'll generate a shutdown message of our own to set across
+		// We'll generate a shutdown message of our own to send across
 		// the wire.
 		localShutdown, err := c.initChanShutdown()
 		if err != nil {
@@ -318,7 +318,7 @@ func (c *channelCloser) ProcessCloseMsg(msg lnwire.Message) ([]lnwire.Message, b
 			msgsToSend = append(msgsToSend, closeSigned)
 		}
 
-		// We'll return both sent of messages to sent to the remote
+		// We'll return both sets of messages to send to the remote
 		// party to kick off the fee negotiation process.
 		return msgsToSend, false, nil
 
@@ -362,7 +362,7 @@ func (c *channelCloser) ProcessCloseMsg(msg lnwire.Message) ([]lnwire.Message, b
 		return nil, false, nil
 
 	// If we're receiving a message while we're in the fee negotiation
-	// phase, then this indicates the remote party is responding a closed
+	// phase, then this indicates the remote party is responding to a closed
 	// signed message we sent, or kicking off the process with their own.
 	case closeFeeNegotiation:
 		// First, we'll assert that we're actually getting a
@@ -512,7 +512,7 @@ func (c *channelCloser) proposeCloseSigned(fee btcutil.Amount) (*lnwire.ClosingS
 	peerLog.Infof("ChannelPoint(%v): proposing fee of %v sat to close "+
 		"chan", c.chanPoint, int64(fee))
 
-	// We'll assembled a ClosingSigned message using this information and
+	// We'll assemble a ClosingSigned message using this information and
 	// return it to the caller so we can kick off the final stage of the
 	// channel closure project.
 	closeSignedMsg := lnwire.NewClosingSigned(c.cid, fee, parsedSig)
@@ -559,7 +559,7 @@ func feeInAcceptableRange(localFee, remoteFee btcutil.Amount) bool {
 
 // rachetFee is our step function used to inch our fee closer to something that
 // both sides can agree on. If up is true, then we'll attempt to increase our
-// offered fee. Otherwise, if up if false, then we'll attempt to decrease our
+// offered fee. Otherwise, if up is false, then we'll attempt to decrease our
 // offered fee.
 func rachetFee(fee btcutil.Amount, up bool) btcutil.Amount {
 	// If we need to rachet up, then we'll increase our fee by 10%.

channeldb/channel.go

@@ -122,11 +122,11 @@ const (
 
 // ChannelConstraints represents a set of constraints meant to allow a node to
 // limit their exposure, enact flow control and ensure that all HTLCs are
-// economically relevant This struct will be mirrored for both sides of the
+// economically relevant. This struct will be mirrored for both sides of the
 // channel, as each side will enforce various constraints that MUST be adhered
 // to for the life time of the channel. The parameters for each of these
-// constraints is static for the duration of the channel, meaning the channel
+// constraints are static for the duration of the channel, meaning the channel
-// must be teared down for them to change.
+// must be torn down for them to change.
 type ChannelConstraints struct {
 	// DustLimit is the threshold (in satoshis) below which any outputs
 	// should be trimmed. When an output is trimmed, it isn't materialized
@@ -145,7 +145,7 @@ type ChannelConstraints struct {
 	// particular time.
 	MaxPendingAmount lnwire.MilliSatoshi
 
-	// MinHTLC is the minimum HTLC value that the the owner of these
+	// MinHTLC is the minimum HTLC value that the owner of these
 	// constraints can offer the remote node. If any HTLCs below this
 	// amount are offered, then the HTLC will be rejected. This, in
 	// tandem with the dust limit allows a node to regulate the
@@ -364,13 +364,13 @@ type OpenChannel struct {
 	RemoteChanCfg ChannelConfig
 
 	// LocalCommitment is the current local commitment state for the local
-	// party. This is stored distinct from the state of of the remote party
+	// party. This is stored distinct from the state of the remote party
 	// as there are certain asymmetric parameters which affect the
 	// structure of each commitment.
 	LocalCommitment ChannelCommitment
 
 	// RemoteCommitment is the current remote commitment state for the
-	// remote party. This is stored distinct from the state of of the local
+	// remote party. This is stored distinct from the state of the local
 	// party as there are certain asymmetric parameters which affect the
 	// structure of each commitment.
 	RemoteCommitment ChannelCommitment
@@ -779,7 +779,7 @@ type HTLC struct {
 	// incremented for each update (includes settle+fail).
 	HtlcIndex uint64
 
-	// LogIndex is the cumulative log index of this this HTLC. This differs
+	// LogIndex is the cumulative log index of this HTLC. This differs
 	// from the HtlcIndex as this will be incremented for each new log
 	// update added.
 	LogIndex uint64

channeldb/channel_test.go

@@ -488,7 +488,7 @@ func TestChannelStateTransition(t *testing.T) {
 		t.Fatalf("unable to add to commit chain: %v", err)
 	}
 
-	// The commitment tip should now match the the commitment that we just
+	// The commitment tip should now match the commitment that we just
 	// inserted.
 	diskCommitDiff, err := channel.RemoteCommitChainTip()
 	if err != nil {

channeldb/graph_test.go

@@ -311,7 +311,7 @@ func TestEdgeInsertionDeletion(t *testing.T) {
 		t.Fatalf("unable to create test node: %v", err)
 	}
 
-	// In in addition to the fake vertexes we create some fake channel
+	// In addition to the fake vertexes we create some fake channel
 	// identifiers.
 	chanID := uint64(prand.Int63())
 	outpoint := wire.OutPoint{
@@ -636,7 +636,7 @@ func TestEdgeInfoUpdates(t *testing.T) {
 		secondNode = node1
 	}
 
-	// In in addition to the fake vertexes we create some fake channel
+	// In addition to the fake vertexes we create some fake channel
 	// identifiers.
 	chanID := uint64(prand.Int63())
 	outpoint := wire.OutPoint{
@@ -880,7 +880,7 @@ func TestGraphTraversal(t *testing.T) {
 	}
 
 	// Iterate through all the known channels within the graph DB, once
-	// again if the map is empty that that indicates that all edges have
+	// again if the map is empty that indicates that all edges have
 	// properly been reached.
 	err = graph.ForEachChannel(func(ei *ChannelEdgeInfo, _ *ChannelEdgePolicy,
 		_ *ChannelEdgePolicy) error {
@@ -901,7 +901,7 @@ func TestGraphTraversal(t *testing.T) {
 	err = firstNode.ForEachChannel(nil, func(_ *bolt.Tx, _ *ChannelEdgeInfo,
 		outEdge, inEdge *ChannelEdgePolicy) error {
 
-		// Each each should indicate that it's outgoing (pointed
+		// Each should indicate that it's outgoing (pointed
 		// towards the second node).
 		if !bytes.Equal(outEdge.Node.PubKeyBytes[:], secondNode.PubKeyBytes[:]) {
 			return fmt.Errorf("wrong outgoing edge")

cmd/lncli/commands.go

@@ -1907,7 +1907,7 @@ func describeGraph(ctx *cli.Context) error {
 }
 
 // normalizeFunc is a factory function which returns a function that normalizes
-// the capacity of of edges within the graph. The value of the returned
+// the capacity of edges within the graph. The value of the returned
 // function can be used to either plot the capacities, or to use a weight in a
 // rendering of the graph.
 func normalizeFunc(edges []*lnrpc.ChannelEdge, scaleFactor float64) func(int64) float64 {

contractcourt/channel_arbitrator.go

@@ -43,7 +43,7 @@ type WitnessSubscription struct {
 
 // WitnessBeacon is a global beacon of witnesses. Contract resolvers will use
 // this interface to lookup witnesses (preimages typically) of contracts
-// they're trying to resolver, add new preimages they resolver, and finally
+// they're trying to resolve, add new preimages they resolve, and finally
 // receive new updates each new time a preimage is discovered.
 //
 // TODO(roasbeef): need to delete the pre-images once we've used them
@@ -671,7 +671,7 @@ func (c *ChannelArbitrator) advanceState(currentHeight uint32,
 	}
 }
 
-// ChainAction is an enum that that encompasses all possible on-chain actions
+// ChainAction is an enum that encompasses all possible on-chain actions
 // we'll take for a set of HTLC's.
 type ChainAction uint8
 
@@ -833,7 +833,7 @@ func (c *ChannelArbitrator) checkChainActions(height uint32,
 	// Now that we know we'll need to go on-chain, we'll examine all of our
 	// active outgoing HTLC's to see if we either need to: sweep them after
 	// a timeout (then cancel backwards), cancel them backwards
-	// immediately, or or watch them as they're still active contracts.
+	// immediately, or watch them as they're still active contracts.
 	for _, htlc := range c.activeHTLCs.outgoingHTLCs {
 		switch {
 		// If the HTLC is dust, then we can cancel it backwards
@@ -1035,7 +1035,7 @@ func (c *ChannelArbitrator) prepContractResolutions(htlcActions ChainActionMap,
 			}
 
 		// If we can timeout the HTLC directly, then we'll create the
-		// proper resolver to to so, who will then cancel the packet
+		// proper resolver to do so, who will then cancel the packet
 		// backwards.
 		case HtlcTimeoutAction:
 			for _, htlc := range htlcs {

contractcourt/contract_resolvers.go

@@ -719,7 +719,7 @@ var _ ContractResolver = (*htlcSuccessResolver)(nil)
 // htlcOutgoingContestResolver is a ContractResolver that's able to resolve an
 // outgoing HTLC that is still contested. An HTLC is still contested, if at the
 // time that we broadcast the commitment transaction, it isn't able to be fully
-// resolved. This this case, we'll either wait for the HTLC to timeout, or for
+// resolved. In this case, we'll either wait for the HTLC to timeout, or for
 // us to learn of the preimage.
 type htlcOutgoingContestResolver struct {
 	// htlcTimeoutResolver is the inner solver that this resolver may turn

discovery/gossiper_test.go

@@ -583,7 +583,7 @@ func TestProcessAnnouncement(t *testing.T) {
 		}
 	}
 
-	// Create node valid, signed announcement, process it with with
+	// Create node valid, signed announcement, process it with 
 	// gossiper service, check that valid announcement have been
 	// propagated farther into the lightning network, and check that we
 	// added new node into router.

htlcswitch/circuit_test.go

@@ -734,7 +734,7 @@ func TestCircuitMapCommitCircuits(t *testing.T) {
 	// Finally, restart the circuit map, which will cause the added circuit
 	// to be loaded from disk. Since the keystone was never set, subsequent
 	// attempts to commit the circuit should cause the circuit map to
-	// indicate that that the HTLC should be failed back.
+	// indicate that the HTLC should be failed back.
 	cfg, circuitMap = restartCircuitMap(t, cfg)
 
 	actions, err = circuitMap.CommitCircuits(circuit)
@@ -1055,7 +1055,7 @@ func TestCircuitMapTrimOpenCircuits(t *testing.T) {
 		firstTrimIndex,
 	)
 
-	// Restart the circuit map, verify that that the trim is reflected on
+	// Restart the circuit map, verify that the trim is reflected on
 	// startup.
 	cfg, circuitMap = restartCircuitMap(t, cfg)
 

htlcswitch/link.go

@@ -1142,7 +1142,7 @@ func (l *channelLink) handleUpstreamMsg(msg lnwire.Message) {
 		// TODO(roasbeef): pipeline to switch
 
 		// As we've learned of a new preimage for the first time, we'll
-		// add it to to our preimage cache. By doing this, we ensure
+		// add it to our preimage cache. By doing this, we ensure
 		// any contested contracts watched by any on-chain arbitrators
 		// can now sweep this HTLC on-chain.
 		go func() {
@@ -1236,7 +1236,7 @@ func (l *channelLink) handleUpstreamMsg(msg lnwire.Message) {
 			return
 		}
 
-		// As we've just just accepted a new state, we'll now
+		// As we've just accepted a new state, we'll now
 		// immediately send the remote peer a revocation for our prior
 		// state.
 		nextRevocation, currentHtlcs, err := l.channel.RevokeCurrentCommitment()
@@ -1964,7 +1964,7 @@ func (l *channelLink) processRemoteAdds(fwdPkg *channeldb.FwdPkg,
 			//
 			// NOTE: Though our recovery and forwarding logic is
 			// predominately batched, settling invoices happens
-			// iteratively. We may reject one of of two payments
+			// iteratively. We may reject one of two payments
 			// for the same rhash at first, but then restart and
 			// reject both after seeing that the invoice has been
 			// settled. Without any record of which one settles
@@ -2105,7 +2105,7 @@ func (l *channelLink) processRemoteAdds(fwdPkg *channeldb.FwdPkg,
 
 		// There are additional channels left within this route. So
 		// we'll verify that our forwarding constraints have been
-		// properly met by by this incoming HTLC.
+		// properly met by this incoming HTLC.
 		default:
 			switch fwdPkg.State {
 			case channeldb.FwdStateProcessed:

htlcswitch/switch.go

@@ -1803,7 +1803,7 @@ func (s *Switch) UpdateShortChanID(chanID lnwire.ChannelID,
 
 	s.indexMtx.Lock()
 
-	// First, we'll extract the current link as is from the link link
+	// First, we'll extract the current link as is from the link 
 	// index. If the link isn't even in the index, then we'll return an
 	// error.
 	link, ok := s.linkIndex[chanID]

lnd_test.go

@@ -2787,7 +2787,7 @@ func testPrivateChannels(net *lntest.NetworkHarness, t *harnessTest) {
 	timeout := time.Duration(time.Second * 5)
 	var networkChans []*lnrpc.ChannelPoint
 
-	// We create the the following topology:
+	// We create the following topology:
 	//
 	// Dave --100k--> Alice --200k--> Bob
 	//  ^		    ^

lnwallet/README.md

@@ -13,7 +13,7 @@ derivation, and the commitment update state machine.
 The package is used within `lnd` as the core wallet of the daemon. The wallet
 itself is composed of several distinct interfaces that decouple the
 implementation of things like signing and blockchain access. This separation
-allows new `WalletController` implementations to be be easily dropped into
+allows new `WalletController` implementations to be easily dropped into
 `lnd` without disrupting the code base. A series of integration tests at the
 interface level are also in place to ensure conformance of the implementation
 with the interface.

lnwallet/btcwallet/btcwallet.go

@@ -260,7 +260,7 @@ func (b *BtcWallet) GetPrivKey(a btcutil.Address) (*btcec.PrivateKey, error) {
 
 // SendOutputs funds, signs, and broadcasts a Bitcoin transaction paying out to
 // the specified outputs. In the case the wallet has insufficient funds, or the
-// outputs are non-standard, a non-nil error will be be returned.
+// outputs are non-standard, a non-nil error will be returned.
 //
 // This is a part of the WalletController interface.
 func (b *BtcWallet) SendOutputs(outputs []*wire.TxOut,

lnwallet/channel.go

@@ -913,7 +913,7 @@ type CommitmentKeyRing struct {
 	// TODO(roasbeef): need delay tweak as well?
 
 	// LocalHtlcKeyTweak is the teak used to derive the local HTLC key from
-	// the local HTLC base point point. This value is needed in order to
+	// the local HTLC base point. This value is needed in order to
 	// derive the final key used within the HTLC scripts in the commitment
 	// transaction.
 	LocalHtlcKeyTweak []byte
@@ -1520,7 +1520,7 @@ func (lc *LightningChannel) logUpdateToPayDesc(logUpdate *channeldb.LogUpdate,
 			pd.theirWitnessScript = theirWitnessScript
 		}
 
-	// For HTLC's we we're offered we'll fetch the original offered HTLc
+	// For HTLC's we're offered we'll fetch the original offered HTLC
 	// from the remote party's update log so we can retrieve the same
 	// PaymentDescriptor that SettleHTLC would produce.
 	case *lnwire.UpdateFulfillHTLC:
@@ -1787,7 +1787,7 @@ type HtlcRetribution struct {
 	// SecondLevelWitnessScript is the witness script that will be created
 	// if the second level HTLC transaction for this output is
 	// broadcast/confirmed. We provide this as if the remote party attempts
-	// to to go the second level to claim the HTLC then we'll need to
+	// to go to the second level to claim the HTLC then we'll need to
 	// update the SignDesc above accordingly to sweep properly.
 	SecondLevelWitnessScript []byte
 
@@ -3187,7 +3187,7 @@ func (lc *LightningChannel) ProcessChanSyncMsg(
 //   3. We didn't get the last RevokeAndAck message they sent, so they'll
 //      re-send it.
 func (lc *LightningChannel) ChanSyncMsg() (*lnwire.ChannelReestablish, error) {
-	// The remote commitment height that we we'll send in the
+	// The remote commitment height that we'll send in the
 	// ChannelReestablish message is our current commitment height plus
 	// one. If the receiver thinks that our commitment height is actually
 	// *equal* to this value, then they'll re-send the last commitment that
@@ -4176,7 +4176,7 @@ func (lc *LightningChannel) RemoveFwdPkg(height uint64) error {
 
 // NextRevocationKey returns the commitment point for the _next_ commitment
 // height. The pubkey returned by this function is required by the remote party
-// along with their revocation base to to extend our commitment chain with a
+// along with their revocation base to extend our commitment chain with a
 // new commitment.
 func (lc *LightningChannel) NextRevocationKey() (*btcec.PublicKey, error) {
 	lc.RLock()

lnwallet/channel_test.go

@@ -704,7 +704,7 @@ func TestSimpleAddSettleWorkflow(t *testing.T) {
 	// At this point, Bob should have 6 BTC settled, with Alice still having
 	// 4 BTC. Alice's channel should show 1 BTC sent and Bob's channel
 	// should show 1 BTC received. They should also be at commitment height
-	// two, with the revocation window extended by by 1 (5).
+	// two, with the revocation window extended by 1 (5).
 	mSatTransferred := lnwire.NewMSatFromSatoshis(btcutil.SatoshiPerBitcoin)
 	if aliceChannel.channelState.TotalMSatSent != mSatTransferred {
 		t.Fatalf("alice satoshis sent incorrect %v vs %v expected",
@@ -3777,7 +3777,7 @@ func TestFeeUpdateRejectInsaneFee(t *testing.T) {
 	startingFeeRate := SatPerKWeight(aliceChannel.channelState.LocalCommitment.FeePerKw)
 	newFeeRate := startingFeeRate * 1000000
 
-	// Both Alice and Bob should reject this new fee rate as it it far too
+	// Both Alice and Bob should reject this new fee rate as it is far too
 	// large.
 	if err := aliceChannel.UpdateFee(newFeeRate); err == nil {
 		t.Fatalf("alice should have rejected fee update")
@@ -4620,7 +4620,7 @@ func TestDesyncHTLCs(t *testing.T) {
 		t.Fatalf("unable to complete state update: %v", err)
 	}
 
-	// Now let let Bob fail this HTLC.
+	// Now let Bob fail this HTLC.
 	err = bobChannel.FailHTLC(bobIndex, []byte("failreason"), nil, nil, nil)
 	if err != nil {
 		t.Fatalf("unable to cancel HTLC: %v", err)

lnwallet/fee_estimator.go

@@ -163,7 +163,7 @@ func (b *BtcdFeeEstimator) EstimateFeePerVSize(numBlocks uint32) (SatPerVByte, e
 	return feeEstimate, nil
 }
 
-// fetchEstimate returns a fee estimate for a transaction be be confirmed in
+// fetchEstimate returns a fee estimate for a transaction to be confirmed in
 // confTarget blocks. The estimate is returned in sat/vbyte.
 func (b *BtcdFeeEstimator) fetchEstimatePerVSize(
 	confTarget uint32) (SatPerVByte, error) {
@@ -268,7 +268,7 @@ func (b *BitcoindFeeEstimator) EstimateFeePerVSize(numBlocks uint32) (SatPerVByt
 	return feeEstimate, nil
 }
 
-// fetchEstimatePerVSize returns a fee estimate for a transaction be be confirmed in
+// fetchEstimatePerVSize returns a fee estimate for a transaction to be confirmed in
 // confTarget blocks. The estimate is returned in sat/vbyte.
 func (b *BitcoindFeeEstimator) fetchEstimatePerVSize(
 	confTarget uint32) (SatPerVByte, error) {

lnwallet/script_utils.go

@@ -1246,7 +1246,7 @@ func DeriveRevocationPrivKey(revokeBasePriv *btcec.PrivateKey,
 func SetStateNumHint(commitTx *wire.MsgTx, stateNum uint64,
 	obfuscator [StateHintSize]byte) error {
 
-	// With the current schema we are only able able to encode state num
+	// With the current schema we are only able to encode state num
 	// hints up to 2^48. Therefore if the passed height is greater than our
 	// state hint ceiling, then exit early.
 	if stateNum > maxStateHint {

lnwallet/script_utils_test.go

@@ -175,7 +175,7 @@ func TestCommitmentSpendValidation(t *testing.T) {
 	}
 
 	// In order to test the final scenario, we modify the TxIn of the sweep
-	// transaction to instead point to to the regular output (non delay)
+	// transaction to instead point to the regular output (non delay)
 	// within the commitment transaction.
 	sweepTx.TxIn[0] = &wire.TxIn{
 		PreviousOutPoint: wire.OutPoint{

lnwallet/wallet.go

@@ -1366,7 +1366,7 @@ func initStateHints(commit1, commit2 *wire.MsgTx,
 }
 
 // selectInputs selects a slice of inputs necessary to meet the specified
-// selection amount. If input selection is unable to succeed to to insufficient
+// selection amount. If input selection is unable to succeed due to insufficient
 // funds, a non-nil error is returned. Additionally, the total amount of the
 // selected coins are returned in order for the caller to properly handle
 // change+fees.

lnwire/channel_id.go

@@ -27,7 +27,7 @@ const (
 type ChannelID [32]byte
 
 // ConnectionWideID is an all-zero ChannelID, which is used to represent a
-// message intended for all channels to to specific peer.
+// message intended for all channels to specific peer.
 var ConnectionWideID = ChannelID{}
 
 // String returns the string representation of the ChannelID. This is just the

lnwire/netaddress.go

@@ -22,7 +22,7 @@ type NetAddress struct {
 	// the node.
 	IdentityKey *btcec.PublicKey
 
-	// Address is is the IP address and port of the node. This is left
+	// Address is the IP address and port of the node. This is left
 	// general so that multiple implementations can be used.
 	Address net.Addr
 

lnwire/pong.go

@@ -11,7 +11,7 @@ type PongPayload []byte
 // Pong message.
 type Pong struct {
 	// PongBytes is a set of opaque bytes that corresponds to the
-	// NumPongBytes defined in the ping message that this this pong is
+	// NumPongBytes defined in the ping message that this pong is
 	// replying to.
 	PongBytes PongPayload
 }

pilot.go

@@ -276,7 +276,7 @@ func initAutoPilot(svr *server, cfg *autoPilotConfig) (*autopilot.Agent, error)
 					pilot.OnChannelOpen(edge)
 				}
 
-				// For each closed closed channel, we'll obtain
+				// For each closed channel, we'll obtain
 				// the chanID of the closed channel and send it
 				// to the pilot.
 				for _, chanClose := range topChange.ClosedChannels {

routing/chainview/interface.go

@@ -5,7 +5,7 @@ import (
 	"github.com/roasbeef/btcd/wire"
 )
 
-// FilteredChainView represents a subscription to a certain subset of of the
+// FilteredChainView represents a subscription to a certain subset of the
 // UTXO set for a particular chain. This interface is useful from the point of
 // view of maintaining an up-to-date channel graph for the Lightning Network.
 // The subset of the UTXO to be subscribed is that of all the currently opened

routing/pathfind.go

@@ -471,7 +471,7 @@ func findPath(tx *bolt.Tx, graph *channeldb.ChannelGraph,
 	//  * similar to route caching, but doesn't factor in the amount
 
 	// To start, we add the source of our path finding attempt to the
-	// distance map with with a distance of 0. This indicates our starting
+	// distance map with a distance of 0. This indicates our starting
 	// point in the graph traversal.
 	sourceVertex := Vertex(sourceNode.PubKeyBytes)
 	distance[sourceVertex] = nodeWithDist{

routing/router.go

@@ -1228,8 +1228,8 @@ func pruneChannelFromRoutes(routes []*Route, skipChan uint64) []*Route {
 }
 
 // pathsToFeeSortedRoutes takes a set of paths, and returns a corresponding set
-// of of routes. A route differs from a path in that it has full time-lock and
+// of routes. A route differs from a path in that it has full time-lock and
-// fee information attached. The set of routes return ed may be less than the
+// fee information attached. The set of routes returned may be less than the
 // initial set of paths as it's possible we drop a route if it can't handle the
 // total payment flow after fees are calculated.
 func pathsToFeeSortedRoutes(source Vertex, paths [][]*ChannelHop, finalCLTVDelta uint16,
@@ -1283,7 +1283,7 @@ func pathsToFeeSortedRoutes(source Vertex, paths [][]*ChannelHop, finalCLTVDelta
 // FindRoutes attempts to query the ChannelRouter for a bounded number
 // available paths to a particular target destination which is able to send
 // `amt` after factoring in channel capacities and cumulative fees along each
-// route route.  To `numPaths eligible paths, we use a modified version of
+// route.  To `numPaths eligible paths, we use a modified version of
 // Yen's algorithm which itself uses a modified version of Dijkstra's algorithm
 // within its inner loop.  Once we have a set of candidate routes, we calculate
 // the required fee and time lock values running backwards along the route. The

server.go

@@ -1390,7 +1390,7 @@ func (s *server) peerConnected(conn net.Conn, connReq *connmgr.ConnReq,
 	// feature vector to advertise to the remote node.
 	localFeatures := lnwire.NewRawFeatureVector()
 
-	// We'll only request a full channel graph sync if we detect that that
+	// We'll only request a full channel graph sync if we detect that
 	// we aren't fully synced yet.
 	if s.shouldRequestGraphSync() {
 		localFeatures.Set(lnwire.InitialRoutingSync)

shachain/utils.go

@@ -50,7 +50,7 @@ func getPrefix(index index, position uint8) uint64 {
 	return (uint64(index) & mask)
 }
 
-// countTrailingZeros count number of of trailing zero bits, this function is
+// countTrailingZeros counts number of trailing zero bits, this function is
 // used to determine the number of element bucket.
 func countTrailingZeros(index index) uint8 {
 	var zeros uint8

utxonursery.go

@@ -910,8 +910,8 @@ func (u *utxoNursery) graduateClass(classHeight uint32) error {
 	return u.cfg.Store.GraduateHeight(classHeight)
 }
 
-// craftSweepTx accepts accepts a list of kindergarten outputs, and baby
+// craftSweepTx accepts a list of kindergarten outputs, and baby
-// outputs which don't required a second-layer claim, and signs and generates a
+// outputs which don't require a second-layer claim, and signs and generates a
 // signed txn that spends from them. This method also makes an accurate fee
 // estimate before generating the required witnesses.
 func (u *utxoNursery) createSweepTx(kgtnOutputs []kidOutput,