Merge PR #3698: Prompt User Confirmation Prior to Signing & Broadcasting

* Prompt user confirmation prior to sign & broadcasting
* Update confirmation message
* Update and fix existing CLI integration tests
* Implement CLI integration test for tx confirmation
* Fix order of input into tx send

PENDING.md

@@ -47,6 +47,7 @@ decoded automatically.
 
 ### Gaia CLI
 
+* [\#3653] Prompt user confirmation prior to signing and broadcasting a transaction.
 * [\#3670] CLI support for showing bech32 addresses in Ledger devices
 * [\#3711] Update `tx sign` to use `--from` instead of the deprecated `--name`
 CLI flag.

client/context/context.go

@@ -53,6 +53,7 @@ type CLIContext struct {
 	FromAddress   sdk.AccAddress
 	FromName      string
 	Indent        bool
+	SkipConfirm   bool
 }
 
 // NewCLIContext returns a new initialized CLIContext with parameters from the
@@ -96,6 +97,7 @@ func NewCLIContext() CLIContext {
 		FromAddress:   fromAddress,
 		FromName:      fromName,
 		Indent:        viper.GetBool(client.FlagIndentResponse),
+		SkipConfirm:   viper.GetBool(client.FlagSkipConfirmation),
 	}
 }
 

client/flags.go

@@ -45,6 +45,7 @@ const (
 	FlagSSLCertFile        = "ssl-certfile"
 	FlagSSLKeyFile         = "ssl-keyfile"
 	FlagOutputDocument     = "output-document" // inspired by wget -O
+	FlagSkipConfirmation   = "yes"
 )
 
 // LineBreak can be included in a command list to provide a blank line
@@ -89,9 +90,14 @@ func PostCommands(cmds ...*cobra.Command) []*cobra.Command {
 		c.Flags().Bool(FlagTrustNode, true, "Trust connected full node (don't verify proofs for responses)")
 		c.Flags().Bool(FlagDryRun, false, "ignore the --gas flag and perform a simulation of a transaction, but don't broadcast it")
 		c.Flags().Bool(FlagGenerateOnly, false, "build an unsigned transaction and write it to STDOUT")
+		c.Flags().BoolP(FlagSkipConfirmation, "y", false, "Skip tx broadcasting prompt confirmation")
+
 		// --gas can accept integers and "simulate"
 		c.Flags().Var(&GasFlagVar, "gas", fmt.Sprintf(
-			"gas limit to set per-transaction; set to %q to calculate required gas automatically (default %d)", GasFlagAuto, DefaultGasLimit))
+			"gas limit to set per-transaction; set to %q to calculate required gas automatically (default %d)",
+			GasFlagAuto, DefaultGasLimit,
+		))
+
 		viper.BindPFlag(FlagTrustNode, c.Flags().Lookup(FlagTrustNode))
 		viper.BindPFlag(FlagUseLedger, c.Flags().Lookup(FlagUseLedger))
 		viper.BindPFlag(FlagNode, c.Flags().Lookup(FlagNode))

client/input.go

@@ -9,7 +9,7 @@ import (
 	"errors"
 
 	"github.com/bgentry/speakeasy"
-	"github.com/mattn/go-isatty"
+	isatty "github.com/mattn/go-isatty"
 )
 
 // MinPassLength is the minimum acceptable password length
@@ -90,8 +90,9 @@ func GetCheckPassword(prompt, prompt2 string, buf *bufio.Reader) (string, error)
 func GetConfirmation(prompt string, buf *bufio.Reader) (bool, error) {
 	for {
 		if inputIsTty() {
-			fmt.Print(fmt.Sprintf("%s [y/n]:", prompt))
+			fmt.Print(fmt.Sprintf("%s [Y/n]: ", prompt))
 		}
+
 		response, err := readLineFromBuf(buf)
 		if err != nil {
 			return false, err

client/utils/utils.go

@@ -62,6 +62,22 @@ func CompleteAndBroadcastTxCLI(txBldr authtxb.TxBuilder, cliCtx context.CLIConte
 		return nil
 	}
 
+	if !cliCtx.SkipConfirm {
+		stdSignMsg, err := txBldr.BuildSignMsg(msgs)
+		if err != nil {
+			return err
+		}
+
+		fmt.Fprintf(os.Stderr, "%s\n\n", cliCtx.Codec.MustMarshalJSON(stdSignMsg))
+
+		buf := client.BufferStdin()
+		ok, err := client.GetConfirmation("confirm transaction before signing and broadcasting", buf)
+		if err != nil || !ok {
+			fmt.Fprintf(os.Stderr, "%s\n", "cancelled transaction")
+			return err
+		}
+	}
+
 	passphrase, err := keys.GetPassphrase(fromName)
 	if err != nil {
 		return err

cmd/gaia/cli_test/cli_test.go

@@ -86,19 +86,19 @@ func TestGaiaCLIMinimumFees(t *testing.T) {
 	barAddr := f.KeyAddress(keyBar)
 
 	// Send a transaction that will get rejected
-	success, _, _ := f.TxSend(keyFoo, barAddr, sdk.NewInt64Coin(fee2Denom, 10))
+	success, _, _ := f.TxSend(keyFoo, barAddr, sdk.NewInt64Coin(fee2Denom, 10), "-y")
 	require.False(f.T, success)
 	tests.WaitForNextNBlocksTM(1, f.Port)
 
 	// Ensure tx w/ correct fees pass
 	txFees := fmt.Sprintf("--fees=%s", sdk.NewInt64Coin(feeDenom, 2))
-	success, _, _ = f.TxSend(keyFoo, barAddr, sdk.NewInt64Coin(fee2Denom, 10), txFees)
+	success, _, _ = f.TxSend(keyFoo, barAddr, sdk.NewInt64Coin(fee2Denom, 10), txFees, "-y")
 	require.True(f.T, success)
 	tests.WaitForNextNBlocksTM(1, f.Port)
 
 	// Ensure tx w/ improper fees fails
 	txFees = fmt.Sprintf("--fees=%s", sdk.NewInt64Coin(feeDenom, 1))
-	success, _, _ = f.TxSend(keyFoo, barAddr, sdk.NewInt64Coin(fooDenom, 10), txFees)
+	success, _, _ = f.TxSend(keyFoo, barAddr, sdk.NewInt64Coin(fooDenom, 10), txFees, "-y")
 	require.False(f.T, success)
 
 	// Cleanup testing directories
@@ -120,7 +120,7 @@ func TestGaiaCLIGasPrices(t *testing.T) {
 	badGasPrice, _ := sdk.NewDecFromStr("0.000003")
 	success, _, _ := f.TxSend(
 		keyFoo, barAddr, sdk.NewInt64Coin(fooDenom, 50),
-		fmt.Sprintf("--gas-prices=%s", sdk.NewDecCoinFromDec(feeDenom, badGasPrice)))
+		fmt.Sprintf("--gas-prices=%s", sdk.NewDecCoinFromDec(feeDenom, badGasPrice)), "-y")
 	require.False(t, success)
 
 	// wait for a block confirmation
@@ -129,7 +129,7 @@ func TestGaiaCLIGasPrices(t *testing.T) {
 	// sufficient gas prices (tx passes)
 	success, _, _ = f.TxSend(
 		keyFoo, barAddr, sdk.NewInt64Coin(fooDenom, 50),
-		fmt.Sprintf("--gas-prices=%s", sdk.NewDecCoinFromDec(feeDenom, minGasPrice)))
+		fmt.Sprintf("--gas-prices=%s", sdk.NewDecCoinFromDec(feeDenom, minGasPrice)), "-y")
 	require.True(t, success)
 
 	// wait for a block confirmation
@@ -171,7 +171,7 @@ func TestGaiaCLIFeesDeduction(t *testing.T) {
 	largeCoins := sdk.TokensFromTendermintPower(10000000)
 	success, _, _ = f.TxSend(
 		keyFoo, barAddr, sdk.NewCoin(fooDenom, largeCoins),
-		fmt.Sprintf("--fees=%s", sdk.NewInt64Coin(feeDenom, 2)))
+		fmt.Sprintf("--fees=%s", sdk.NewInt64Coin(feeDenom, 2)), "-y")
 	require.False(t, success)
 
 	// Wait for a block
@@ -184,7 +184,7 @@ func TestGaiaCLIFeesDeduction(t *testing.T) {
 	// test success (transfer = coins + fees)
 	success, _, _ = f.TxSend(
 		keyFoo, barAddr, sdk.NewInt64Coin(fooDenom, 500),
-		fmt.Sprintf("--fees=%s", sdk.NewInt64Coin(feeDenom, 2)))
+		fmt.Sprintf("--fees=%s", sdk.NewInt64Coin(feeDenom, 2)), "-y")
 	require.True(t, success)
 
 	f.Cleanup()
@@ -208,7 +208,7 @@ func TestGaiaCLISend(t *testing.T) {
 
 	// Send some tokens from one account to the other
 	sendTokens := sdk.TokensFromTendermintPower(10)
-	f.TxSend(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens))
+	f.TxSend(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens), "-y")
 	tests.WaitForNextNBlocksTM(1, f.Port)
 
 	// Ensure account balances match expected
@@ -226,7 +226,7 @@ func TestGaiaCLISend(t *testing.T) {
 	require.Equal(t, startTokens.Sub(sendTokens), fooAcc.GetCoins().AmountOf(denom))
 
 	// test autosequencing
-	f.TxSend(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens))
+	f.TxSend(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens), "-y")
 	tests.WaitForNextNBlocksTM(1, f.Port)
 
 	// Ensure account balances match expected
@@ -236,7 +236,7 @@ func TestGaiaCLISend(t *testing.T) {
 	require.Equal(t, startTokens.Sub(sendTokens.MulRaw(2)), fooAcc.GetCoins().AmountOf(denom))
 
 	// test memo
-	f.TxSend(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens), "--memo='testmemo'")
+	f.TxSend(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens), "--memo='testmemo'", "-y")
 	tests.WaitForNextNBlocksTM(1, f.Port)
 
 	// Ensure account balances match expected
@@ -248,6 +248,40 @@ func TestGaiaCLISend(t *testing.T) {
 	f.Cleanup()
 }
 
+func TestGaiaCLIConfirmTx(t *testing.T) {
+	t.Parallel()
+	f := InitFixtures(t)
+
+	// start gaiad server
+	proc := f.GDStart()
+	defer proc.Stop(false)
+
+	// Save key addresses for later use
+	fooAddr := f.KeyAddress(keyFoo)
+	barAddr := f.KeyAddress(keyBar)
+
+	fooAcc := f.QueryAccount(fooAddr)
+	startTokens := sdk.TokensFromTendermintPower(50)
+	require.Equal(t, startTokens, fooAcc.GetCoins().AmountOf(denom))
+
+	// send some tokens from one account to the other
+	sendTokens := sdk.TokensFromTendermintPower(10)
+	f.txSendWithConfirm(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens), "Y")
+	tests.WaitForNextNBlocksTM(1, f.Port)
+
+	// ensure account balances match expected
+	barAcc := f.QueryAccount(barAddr)
+	require.Equal(t, sendTokens, barAcc.GetCoins().AmountOf(denom))
+
+	// send some tokens from one account to the other (cancelling confirmation)
+	f.txSendWithConfirm(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens), "n")
+	tests.WaitForNextNBlocksTM(1, f.Port)
+
+	// ensure account balances match expected
+	barAcc = f.QueryAccount(barAddr)
+	require.Equal(t, sendTokens, barAcc.GetCoins().AmountOf(denom))
+}
+
 func TestGaiaCLIGasAuto(t *testing.T) {
 	t.Parallel()
 	f := InitFixtures(t)
@@ -265,7 +299,7 @@ func TestGaiaCLIGasAuto(t *testing.T) {
 
 	// Test failure with auto gas disabled and very little gas set by hand
 	sendTokens := sdk.TokensFromTendermintPower(10)
-	success, _, _ := f.TxSend(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens), "--gas=10")
+	success, _, _ := f.TxSend(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens), "--gas=10", "-y")
 	require.False(t, success)
 
 	// Check state didn't change
@@ -273,7 +307,7 @@ func TestGaiaCLIGasAuto(t *testing.T) {
 	require.Equal(t, startTokens, fooAcc.GetCoins().AmountOf(denom))
 
 	// Test failure with negative gas
-	success, _, _ = f.TxSend(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens), "--gas=-100")
+	success, _, _ = f.TxSend(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens), "--gas=-100", "-y")
 	require.False(t, success)
 
 	// Check state didn't change
@@ -281,7 +315,7 @@ func TestGaiaCLIGasAuto(t *testing.T) {
 	require.Equal(t, startTokens, fooAcc.GetCoins().AmountOf(denom))
 
 	// Test failure with 0 gas
-	success, _, _ = f.TxSend(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens), "--gas=0")
+	success, _, _ = f.TxSend(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens), "--gas=0", "-y")
 	require.False(t, success)
 
 	// Check state didn't change
@@ -289,7 +323,7 @@ func TestGaiaCLIGasAuto(t *testing.T) {
 	require.Equal(t, startTokens, fooAcc.GetCoins().AmountOf(denom))
 
 	// Enable auto gas
-	success, stdout, stderr := f.TxSend(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens), "--gas=auto")
+	success, stdout, stderr := f.TxSend(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens), "--gas=auto", "-y")
 	require.NotEmpty(t, stderr)
 	require.True(t, success)
 	cdc := app.MakeCodec()
@@ -320,7 +354,7 @@ func TestGaiaCLICreateValidator(t *testing.T) {
 	consPubKey := sdk.MustBech32ifyConsPub(ed25519.GenPrivKey().PubKey())
 
 	sendTokens := sdk.TokensFromTendermintPower(10)
-	f.TxSend(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens))
+	f.TxSend(keyFoo, barAddr, sdk.NewCoin(denom, sendTokens), "-y")
 	tests.WaitForNextNBlocksTM(1, f.Port)
 
 	barAcc := f.QueryAccount(barAddr)
@@ -342,7 +376,7 @@ func TestGaiaCLICreateValidator(t *testing.T) {
 	require.True(t, success)
 
 	// Create the validator
-	f.TxStakingCreateValidator(keyBar, consPubKey, sdk.NewCoin(denom, newValTokens))
+	f.TxStakingCreateValidator(keyBar, consPubKey, sdk.NewCoin(denom, newValTokens), "-y")
 	tests.WaitForNextNBlocksTM(1, f.Port)
 
 	// Ensure funds were deducted properly
@@ -361,7 +395,7 @@ func TestGaiaCLICreateValidator(t *testing.T) {
 
 	// unbond a single share
 	unbondTokens := sdk.TokensFromTendermintPower(1)
-	success = f.TxStakingUnbond(keyBar, unbondTokens.String(), barVal)
+	success = f.TxStakingUnbond(keyBar, unbondTokens.String(), barVal, "-y")
 	require.True(t, success)
 	tests.WaitForNextNBlocksTM(1, f.Port)
 
@@ -403,7 +437,7 @@ func TestGaiaCLISubmitProposal(t *testing.T) {
 	// Test submit generate only for submit proposal
 	proposalTokens := sdk.TokensFromTendermintPower(5)
 	success, stdout, stderr := f.TxGovSubmitProposal(
-		keyFoo, "Text", "Test", "test", sdk.NewCoin(denom, proposalTokens), "--generate-only")
+		keyFoo, "Text", "Test", "test", sdk.NewCoin(denom, proposalTokens), "--generate-only", "-y")
 	require.True(t, success)
 	require.Empty(t, stderr)
 	msg := unmarshalStdTx(t, stdout)
@@ -416,7 +450,7 @@ func TestGaiaCLISubmitProposal(t *testing.T) {
 	require.True(t, success)
 
 	// Create the proposal
-	f.TxGovSubmitProposal(keyFoo, "Text", "Test", "test", sdk.NewCoin(denom, proposalTokens))
+	f.TxGovSubmitProposal(keyFoo, "Text", "Test", "test", sdk.NewCoin(denom, proposalTokens), "-y")
 	tests.WaitForNextNBlocksTM(1, f.Port)
 
 	// Ensure transaction tags can be queried
@@ -451,7 +485,7 @@ func TestGaiaCLISubmitProposal(t *testing.T) {
 	require.Equal(t, 0, len(msg.GetSignatures()))
 
 	// Run the deposit transaction
-	f.TxGovDeposit(1, keyFoo, sdk.NewCoin(denom, depositTokens))
+	f.TxGovDeposit(1, keyFoo, sdk.NewCoin(denom, depositTokens), "-y")
 	tests.WaitForNextNBlocksTM(1, f.Port)
 
 	// test query deposit
@@ -486,7 +520,7 @@ func TestGaiaCLISubmitProposal(t *testing.T) {
 	require.Equal(t, 0, len(msg.GetSignatures()))
 
 	// Vote on the proposal
-	f.TxGovVote(1, gov.OptionYes, keyFoo)
+	f.TxGovVote(1, gov.OptionYes, keyFoo, "-y")
 	tests.WaitForNextNBlocksTM(1, f.Port)
 
 	// Query the vote
@@ -513,7 +547,7 @@ func TestGaiaCLISubmitProposal(t *testing.T) {
 	require.Equal(t, uint64(1), proposalsQuery[0].GetProposalID())
 
 	// submit a second test proposal
-	f.TxGovSubmitProposal(keyFoo, "Text", "Apples", "test", sdk.NewCoin(denom, proposalTokens))
+	f.TxGovSubmitProposal(keyFoo, "Text", "Apples", "test", sdk.NewCoin(denom, proposalTokens), "-y")
 	tests.WaitForNextNBlocksTM(1, f.Port)
 
 	// Test limit on proposals query
@@ -538,7 +572,7 @@ func TestGaiaCLIQueryTxPagination(t *testing.T) {
 	seq := accFoo.GetSequence()
 
 	for i := 1; i <= 30; i++ {
-		success, _, _ := f.TxSend(keyFoo, barAddr, sdk.NewInt64Coin(fooDenom, int64(i)), fmt.Sprintf("--sequence=%d", seq))
+		success, _, _ := f.TxSend(keyFoo, barAddr, sdk.NewInt64Coin(fooDenom, int64(i)), fmt.Sprintf("--sequence=%d", seq), "-y")
 		require.True(t, success)
 		seq++
 	}
@@ -725,7 +759,7 @@ func TestGaiaCLIMultisignInsufficientCosigners(t *testing.T) {
 	barAddr := f.KeyAddress(keyBar)
 
 	// Send some tokens from one account to the other
-	success, _, _ := f.TxSend(keyFoo, fooBarBazAddr, sdk.NewInt64Coin(denom, 10))
+	success, _, _ := f.TxSend(keyFoo, fooBarBazAddr, sdk.NewInt64Coin(denom, 10), "-y")
 	require.True(t, success)
 	tests.WaitForNextNBlocksTM(1, f.Port)
 
@@ -738,7 +772,7 @@ func TestGaiaCLIMultisignInsufficientCosigners(t *testing.T) {
 	defer os.Remove(unsignedTxFile.Name())
 
 	// Sign with foo's key
-	success, stdout, _ = f.TxSign(keyFoo, unsignedTxFile.Name(), "--multisig", fooBarBazAddr.String())
+	success, stdout, _ = f.TxSign(keyFoo, unsignedTxFile.Name(), "--multisig", fooBarBazAddr.String(), "-y")
 	require.True(t, success)
 
 	// Write the output to disk
@@ -810,7 +844,7 @@ func TestGaiaCLIMultisignSortSignatures(t *testing.T) {
 	barAddr := f.KeyAddress(keyBar)
 
 	// Send some tokens from one account to the other
-	success, _, _ := f.TxSend(keyFoo, fooBarBazAddr, sdk.NewInt64Coin(denom, 10))
+	success, _, _ := f.TxSend(keyFoo, fooBarBazAddr, sdk.NewInt64Coin(denom, 10), "-y")
 	require.True(t, success)
 	tests.WaitForNextNBlocksTM(1, f.Port)
 
@@ -872,7 +906,7 @@ func TestGaiaCLIMultisign(t *testing.T) {
 	bazAddr := f.KeyAddress(keyBaz)
 
 	// Send some tokens from one account to the other
-	success, _, _ := f.TxSend(keyFoo, fooBarBazAddr, sdk.NewInt64Coin(denom, 10))
+	success, _, _ := f.TxSend(keyFoo, fooBarBazAddr, sdk.NewInt64Coin(denom, 10), "-y")
 	require.True(t, success)
 	tests.WaitForNextNBlocksTM(1, f.Port)
 
@@ -890,7 +924,7 @@ func TestGaiaCLIMultisign(t *testing.T) {
 	defer os.Remove(unsignedTxFile.Name())
 
 	// Sign with foo's key
-	success, stdout, _ = f.TxSign(keyFoo, unsignedTxFile.Name(), "--multisig", fooBarBazAddr.String())
+	success, stdout, _ = f.TxSign(keyFoo, unsignedTxFile.Name(), "--multisig", fooBarBazAddr.String(), "-y")
 	require.True(t, success)
 
 	// Write the output to disk
@@ -898,7 +932,7 @@ func TestGaiaCLIMultisign(t *testing.T) {
 	defer os.Remove(fooSignatureFile.Name())
 
 	// Sign with bar's key
-	success, stdout, _ = f.TxSign(keyBar, unsignedTxFile.Name(), "--multisig", fooBarBazAddr.String())
+	success, stdout, _ = f.TxSign(keyBar, unsignedTxFile.Name(), "--multisig", fooBarBazAddr.String(), "-y")
 	require.True(t, success)
 
 	// Write the output to disk
@@ -915,7 +949,7 @@ func TestGaiaCLIMultisign(t *testing.T) {
 	defer os.Remove(signedTxFile.Name())
 
 	// Validate the multisignature
-	success, _, _ = f.TxSign(keyFooBarBaz, signedTxFile.Name(), "--validate-signatures")
+	success, _, _ = f.TxSign(keyFooBarBaz, signedTxFile.Name(), "--validate-signatures", "-y")
 	require.True(t, success)
 
 	// Broadcast the transaction

cmd/gaia/cli_test/test_helpers.go

@@ -288,6 +288,14 @@ func (f *Fixtures) TxSend(from string, to sdk.AccAddress, amount sdk.Coin, flags
 	return executeWriteRetStdStreams(f.T, addFlags(cmd, flags), app.DefaultKeyPass)
 }
 
+func (f *Fixtures) txSendWithConfirm(
+	from string, to sdk.AccAddress, amount sdk.Coin, confirm string, flags ...string,
+) (bool, string, string) {
+
+	cmd := fmt.Sprintf("gaiacli tx send %s %s %v --from=%s", to, amount, f.Flags(), from)
+	return executeWriteRetStdStreams(f.T, addFlags(cmd, flags), confirm, app.DefaultKeyPass)
+}
+
 // TxSign is gaiacli tx sign
 func (f *Fixtures) TxSign(signer, fileName string, flags ...string) (bool, string, string) {
 	cmd := fmt.Sprintf("gaiacli tx sign %v --from=%s %v", f.Flags(), signer, fileName)

x/auth/client/txbuilder/txbuilder.go

@@ -174,8 +174,9 @@ func (bldr TxBuilder) WithAccountNumber(accnum uint64) TxBuilder {
 	return bldr
 }
 
-// BuildSignMsg builds a single message to be signed from a TxBuilder given a set of
-// messages. It returns an error if a fee is supplied but cannot be parsed.
+// BuildSignMsg builds a single message to be signed from a TxBuilder given a
+// set of messages. It returns an error if a fee is supplied but cannot be
+// parsed.
 func (bldr TxBuilder) BuildSignMsg(msgs []sdk.Msg) (StdSignMsg, error) {
 	chainID := bldr.chainID
 	if chainID == "" {
@@ -221,8 +222,7 @@ func (bldr TxBuilder) Sign(name, passphrase string, msg StdSignMsg) ([]byte, err
 }
 
 // BuildAndSign builds a single message to be signed, and signs a transaction
-// with the built message given a name, passphrase, and a set of
-// messages.
+// with the built message given a name, passphrase, and a set of messages.
 func (bldr TxBuilder) BuildAndSign(name, passphrase string, msgs []sdk.Msg) ([]byte, error) {
 	msg, err := bldr.BuildSignMsg(msgs)
 	if err != nil {