ronantakizawa/codereview-bench huggingface dataset:
Repository: spf13/cobra
File: command.go (Go)

Code before:
		return commandFound, a, fmt.Errorf("unknown command %q for %q", argsWOflags[0], commandFound.CommandPath())
	}

	return commandFound, a, nil
}

func (c *Command) Root() *Command {
	var findRoot func(*Command) *Command

	findRoot = func(x *Command) *Command {
		if x.HasParent() {
			return findRoot(x.parent)
		} else {
			return x
		}
	}

	return findRoot(c)
}

func (c *Command) execute(a []string) (err error) {
	if c == nil {
		return fmt.Errorf("Called Execute() on a nil Command")
	}

	if len(c.Deprecated) > 0 {
		c.Printf("Command %q is deprecated, %s\n", c.Name(), c.Deprecated)
	}

	// initialize help flag as the last point possible to allow for user
	// overriding
	c.initHelpFlag()

	err = c.ParseFlags(a)
	if err != nil {
		return err
	}
	// If help is called, regardless of other flags, return we want help
	// Also say we need help if the command isn't runnable.
	helpVal, err := c.Flags().GetBool("help")
	if err != nil {
		// should be impossible to get here as we always declare a help
		// flag in initHelpFlag()
		c.Println("\"help\" flag declared as non-bool. Please correct your code")
		return err
	}
	if helpVal || !c.Runnable() {
		return flag.ErrHelp
	}

	c.preRun()

Review comment (suggestion):
With suggestions disabled it behaves exactly like before, there's no new `\n`. The [test for unknown command](https://github.com/fabianofranz/cobra/blob/b4087da7eb1bf3822d8413008dbd4c3c6c3c5f2d/cobra_test.go#L788) didn't change.


Code after:
	}

	// root command with subcommands, do subcommand checking
	if commandFound == c && len(argsWOflags) > 0 {
		suggestions := ""
		if !c.DisableSuggestions {
			if c.SuggestionsMinimumDistance <= 0 {
				c.SuggestionsMinimumDistance = 2
			}
			similar := []string{}
			for _, cmd := range c.commands {
				if cmd.IsAvailableCommand() {
					levenshtein := ld(argsWOflags[0], cmd.Name(), true)
					if levenshtein <= c.SuggestionsMinimumDistance {
						similar = append(similar, cmd.Name())
					}
				}
			}
			if len(similar) > 0 {
				suggestions += "\n\nDid you mean this?\n"
				for _, s := range similar {
					suggestions += fmt.Sprintf("\t%v\n", s)
				}
			}
		}
		return commandFound, a, fmt.Errorf("unknown command %q for %q%s", argsWOflags[0], commandFound.CommandPath(), suggestions)
	}

	return commandFound, a, nil
}

func (c *Command) Root() *Command {
	var findRoot func(*Command) *Command

	findRoot = func(x *Command) *Command {
		if x.HasParent() {
			return findRoot(x.parent)
		} else {
			return x
		}
	}

	return findRoot(c)
}

func (c *Command) execute(a []string) (err error) {
	if c == nil {
		return fmt.Errorf("Called Execute() on a nil Command")
	}

	if len(c.Deprecated) > 0 {
Repository: spf13/cobra
File: bash_completions.go (Go)

Code before:
const (
	BashCompFilenameExt     = "cobra_annotation_bash_completion_filename_extentions"
	BashCompCustom          = "cobra_annotation_bash_completion_custom"
	BashCompOneRequiredFlag = "cobra_annotation_bash_completion_one_required_flag"
	BashCompSubdirsInDir    = "cobra_annotation_bash_completion_subdirs_in_dir"
)

func preamble(out io.Writer, name string) error {
	_, err := fmt.Fprintf(out, "# bash completion for %-36s -*- shell-script -*-\n", name)
	if err != nil {
		return err
	}
	_, err = fmt.Fprintf(out, `
__debug()
{
    if [[ -n ${BASH_COMP_DEBUG_FILE} ]]; then
        echo "$*" >> "${BASH_COMP_DEBUG_FILE}"
    fi
}

__index_of_word()
{
    local w word=$1
    shift
    index=0
    for w in "$@"; do
        [[ $w = "$word" ]] && return
        index=$((index+1))
    done
    index=-1
}

__contains_word()
{
    local w word=$1; shift
    for w in "$@"; do
        [[ $w = "$word" ]] && return
    done
    return 1
}

__handle_reply()
{
    __debug "${FUNCNAME}"
    case $cur in
        -*)
            if [[ $(type -t compopt) = "builtin" ]]; then
                compopt -o nospace
            fi
            local allflags
            if [ ${#must_have_one_flag[@]} -ne 0 ]; then

Review comment (suggestion):
Have to check what _init_completion does in addition.

In any case, we have to call `_get_comp_words_by_ref` with `-n =` to exclude `=` as a word separator. Otherwise, bash 4+ and base <4 will behave differently.


Code after:
const (
	BashCompFilenameExt     = "cobra_annotation_bash_completion_filename_extentions"
	BashCompCustom          = "cobra_annotation_bash_completion_custom"
	BashCompOneRequiredFlag = "cobra_annotation_bash_completion_one_required_flag"
	BashCompSubdirsInDir    = "cobra_annotation_bash_completion_subdirs_in_dir"
)

func preamble(out io.Writer, name string) error {
	_, err := fmt.Fprintf(out, "# bash completion for %-36s -*- shell-script -*-\n", name)
	if err != nil {
		return err
	}
	_, err = fmt.Fprintf(out, `
__debug()
{
    if [[ -n ${BASH_COMP_DEBUG_FILE} ]]; then
        echo "$*" >> "${BASH_COMP_DEBUG_FILE}"
    fi
}

# Homebrew on Macs have version 1.3 of bash-completion which doesn't include
# _init_completion. This is a very minimal version of that function.
__my_init_completion()
{
    COMPREPLY=()
    _get_comp_words_by_ref "$@" cur prev words cword
}

__index_of_word()
{
    local w word=$1
    shift
    index=0
    for w in "$@"; do
        [[ $w = "$word" ]] && return
        index=$((index+1))
    done
    index=-1
}

__contains_word()
{
    local w word=$1; shift
    for w in "$@"; do
        [[ $w = "$word" ]] && return
    done
    return 1
}

__handle_reply()
{
Repository: spf13/cobra
File: bash_completions.go (Go)

Code before:
const (
	BashCompFilenameExt     = "cobra_annotation_bash_completion_filename_extentions"
	BashCompCustom          = "cobra_annotation_bash_completion_custom"
	BashCompOneRequiredFlag = "cobra_annotation_bash_completion_one_required_flag"
	BashCompSubdirsInDir    = "cobra_annotation_bash_completion_subdirs_in_dir"
)

func preamble(out io.Writer, name string) error {
	_, err := fmt.Fprintf(out, "# bash completion for %-36s -*- shell-script -*-\n", name)
	if err != nil {
		return err
	}
	_, err = fmt.Fprintf(out, `
__debug()
{
    if [[ -n ${BASH_COMP_DEBUG_FILE} ]]; then
        echo "$*" >> "${BASH_COMP_DEBUG_FILE}"
    fi
}

__index_of_word()
{
    local w word=$1
    shift
    index=0
    for w in "$@"; do
        [[ $w = "$word" ]] && return
        index=$((index+1))
    done
    index=-1
}

__contains_word()
{
    local w word=$1; shift
    for w in "$@"; do
        [[ $w = "$word" ]] && return
    done
    return 1
}

__handle_reply()
{
    __debug "${FUNCNAME}"
    case $cur in
        -*)
            if [[ $(type -t compopt) = "builtin" ]]; then
                compopt -o nospace
            fi
            local allflags
            if [ ${#must_have_one_flag[@]} -ne 0 ]; then

Review comment (suggestion):
Fixed. Actually, we call _init_completion already with `-s` which implies `-n =`. Only on the Mac, I had to add `-n =` manually.


Code after:
const (
	BashCompFilenameExt     = "cobra_annotation_bash_completion_filename_extentions"
	BashCompCustom          = "cobra_annotation_bash_completion_custom"
	BashCompOneRequiredFlag = "cobra_annotation_bash_completion_one_required_flag"
	BashCompSubdirsInDir    = "cobra_annotation_bash_completion_subdirs_in_dir"
)

func preamble(out io.Writer, name string) error {
	_, err := fmt.Fprintf(out, "# bash completion for %-36s -*- shell-script -*-\n", name)
	if err != nil {
		return err
	}
	_, err = fmt.Fprintf(out, `
__debug()
{
    if [[ -n ${BASH_COMP_DEBUG_FILE} ]]; then
        echo "$*" >> "${BASH_COMP_DEBUG_FILE}"
    fi
}

# Homebrew on Macs have version 1.3 of bash-completion which doesn't include
# _init_completion. This is a very minimal version of that function.
__my_init_completion()
{
    COMPREPLY=()
    _get_comp_words_by_ref "$@" cur prev words cword
}

__index_of_word()
{
    local w word=$1
    shift
    index=0
    for w in "$@"; do
        [[ $w = "$word" ]] && return
        index=$((index+1))
    done
    index=-1
}

__contains_word()
{
    local w word=$1; shift
    for w in "$@"; do
        [[ $w = "$word" ]] && return
    done
    return 1
}

__handle_reply()
{
Repository: spf13/cobra
File: command_test.go (Go)

Code before:
	}
}

func Test_DisableFlagParsing(t *testing.T) {
	as := []string{"-v", "-race", "-file", "foo.go"}
	targs := []string{}
	cmdPrint := &Command{
		DisableFlagParsing: true,
		Run: func(cmd *Command, args []string) {
			targs = args
		},
	}
	osargs := []string{"cmd"}
	os.Args = append(osargs, as...)
	err := cmdPrint.Execute()
	if err != nil {
		t.Error(err)
	}
	if !reflect.DeepEqual(as, targs) {
		t.Errorf("expected: %v, got: %v", as, targs)
	}
}

func TestCommandsAreSorted(t *testing.T) {

	originalNames := []string{"middle", "zlast", "afirst"}

	var tmpCommand = &Command{Use: "tmp"}

	for _, name := range(originalNames) {
		tmpCommand.AddCommand(&Command{Use: name})
	}

	sort.Strings(originalNames)

	for i, c := range(tmpCommand.Commands()) {
		if originalNames[i] != c.Name() {
			t.Errorf("expected: %s, got: %s", originalNames[i], c.Name())
		}
	}
}


Review comment (suggestion):
I would prefer you create a manual list of output names, so we aren't using the `sort` package to test the `sort` package...


Code after:
}

func Test_DisableFlagParsing(t *testing.T) {
	as := []string{"-v", "-race", "-file", "foo.go"}
	targs := []string{}
	cmdPrint := &Command{
		DisableFlagParsing: true,
		Run: func(cmd *Command, args []string) {
			targs = args
		},
	}
	osargs := []string{"cmd"}
	os.Args = append(osargs, as...)
	err := cmdPrint.Execute()
	if err != nil {
		t.Error(err)
	}
	if !reflect.DeepEqual(as, targs) {
		t.Errorf("expected: %v, got: %v", as, targs)
	}
}

func TestCommandsAreSorted(t *testing.T) {
	EnableCommandSorting = true

	originalNames := []string{"middle", "zlast", "afirst"}
	expectedNames := []string{"afirst", "middle", "zlast"}

	var tmpCommand = &Command{Use: "tmp"}

	for _, name := range(originalNames) {
		tmpCommand.AddCommand(&Command{Use: name})
	}

	for i, c := range(tmpCommand.Commands()) {
		if expectedNames[i] != c.Name() {
			t.Errorf("expected: %s, got: %s", expectedNames[i], c.Name())
		}
	}

	EnableCommandSorting = true
}

func TestEnableCommandSortingIsDisabled(t *testing.T) {
	EnableCommandSorting = false

	originalNames := []string{"middle", "zlast", "afirst"}

	var tmpCommand = &Command{Use: "tmp"}

	for _, name := range(originalNames) {
Repository: spf13/cobra
File: command.go (Go)

Code before:

// HelpFunc returns either the function set by SetHelpFunc for this command
// or a parent, or it returns a function which calls c.Help()
func (c *Command) HelpFunc() func(*Command, []string) {
	cmd := c
	for cmd != nil {
		if cmd.helpFunc != nil {
			return cmd.helpFunc
		}
		cmd = cmd.parent
	}
	return func(*Command, []string) {
		err := c.Help()
		if err != nil {
			c.Println(err)
		}
	}
}

var minUsagePadding = 25

func (c *Command) UsagePadding() int {
	if c.parent == nil || minUsagePadding > c.parent.commandsMaxUseLen {
		return minUsagePadding
	}
	return c.parent.commandsMaxUseLen
}

var minCommandPathPadding = 11

//
func (c *Command) CommandPathPadding() int {
	if c.parent == nil || minCommandPathPadding > c.parent.commandsMaxCommandPathLen {
		return minCommandPathPadding
	}
	return c.parent.commandsMaxCommandPathLen
}

var minNamePadding = 11

func (c *Command) NamePadding() int {
	if c.parent == nil || minNamePadding > c.parent.commandsMaxNameLen {
		return minNamePadding
	}
	return c.parent.commandsMaxNameLen
}

func (c *Command) UsageTemplate() string {
	if c.usageTemplate != "" {
		return c.usageTemplate
	}

Review comment (bug):
I think this is wrong. It's not using `UsageFunc()` so if someone has set `SetUsageFunc()` it wont print the correct usage.


Code after:
}

// HelpFunc returns either the function set by SetHelpFunc for this command
// or a parent, or it returns a function which calls c.Help()
func (c *Command) HelpFunc() func(*Command, []string) {
	cmd := c
	for cmd != nil {
		if cmd.helpFunc != nil {
			return cmd.helpFunc
		}
		cmd = cmd.parent
	}
	return func(*Command, []string) {
		err := c.Help()
		if err != nil {
			c.Println(err)
		}
	}
}

// Output the usage for the command
// Used when a user provides invalid input
// Can be defined by user by overriding UsageFunc
func (c *Command) Usage() error {
	c.mergePersistentFlags()
	err := tmpl(c.getOutOrStderr(), c.UsageTemplate(), c)
	return err
}

// Output the help for the command
// Used when a user calls help [command]
// by the default HelpFunc in the commander
func (c *Command) Help() error {
	c.mergePersistentFlags()
	err := tmpl(c.getOutOrStdout(), c.HelpTemplate(), c)
	return err
}

func (c *Command) UsageString() string {
	tmpOutput := c.output
	bb := new(bytes.Buffer)
	c.SetOutput(bb)
	c.Usage()
	c.output = tmpOutput
	return bb.String()
}

var minUsagePadding = 25

func (c *Command) UsagePadding() int {
	if c.parent == nil || minUsagePadding > c.parent.commandsMaxUseLen {
Repository: spf13/cobra
File: command.go (Go)

Code before:

// HelpFunc returns either the function set by SetHelpFunc for this command
// or a parent, or it returns a function which calls c.Help()
func (c *Command) HelpFunc() func(*Command, []string) {
	cmd := c
	for cmd != nil {
		if cmd.helpFunc != nil {
			return cmd.helpFunc
		}
		cmd = cmd.parent
	}
	return func(*Command, []string) {
		err := c.Help()
		if err != nil {
			c.Println(err)
		}
	}
}

var minUsagePadding = 25

func (c *Command) UsagePadding() int {
	if c.parent == nil || minUsagePadding > c.parent.commandsMaxUseLen {
		return minUsagePadding
	}
	return c.parent.commandsMaxUseLen
}

var minCommandPathPadding = 11

//
func (c *Command) CommandPathPadding() int {
	if c.parent == nil || minCommandPathPadding > c.parent.commandsMaxCommandPathLen {
		return minCommandPathPadding
	}
	return c.parent.commandsMaxCommandPathLen
}

var minNamePadding = 11

func (c *Command) NamePadding() int {
	if c.parent == nil || minNamePadding > c.parent.commandsMaxNameLen {
		return minNamePadding
	}
	return c.parent.commandsMaxNameLen
}

func (c *Command) UsageTemplate() string {
	if c.usageTemplate != "" {
		return c.usageTemplate
	}

Review comment (suggestion):
@dnephin  Unless I'm missing something, it actually works the other way - `UsageFunc()` [uses this one](https://github.com/fabianofranz/cobra/blob/77530f537eb200c0781aac768e568bf35191525c/command.go#L208), and if another func were provided through `SetUsageFunc`, [it's going to be used](https://github.com/fabianofranz/cobra/blob/77530f537eb200c0781aac768e568bf35191525c/command.go#L200-L202) and this one will be ignored. 

I mostly did this to improve code clarity and conciseness: `UsageFunc()` calls `Usage()` the same way `HelpFunc()` were already calling `Help()`.


Code after:
}

// HelpFunc returns either the function set by SetHelpFunc for this command
// or a parent, or it returns a function which calls c.Help()
func (c *Command) HelpFunc() func(*Command, []string) {
	cmd := c
	for cmd != nil {
		if cmd.helpFunc != nil {
			return cmd.helpFunc
		}
		cmd = cmd.parent
	}
	return func(*Command, []string) {
		err := c.Help()
		if err != nil {
			c.Println(err)
		}
	}
}

// Output the usage for the command
// Used when a user provides invalid input
// Can be defined by user by overriding UsageFunc
func (c *Command) Usage() error {
	c.mergePersistentFlags()
	err := tmpl(c.getOutOrStderr(), c.UsageTemplate(), c)
	return err
}

// Output the help for the command
// Used when a user calls help [command]
// by the default HelpFunc in the commander
func (c *Command) Help() error {
	c.mergePersistentFlags()
	err := tmpl(c.getOutOrStdout(), c.HelpTemplate(), c)
	return err
}

func (c *Command) UsageString() string {
	tmpOutput := c.output
	bb := new(bytes.Buffer)
	c.SetOutput(bb)
	c.Usage()
	c.output = tmpOutput
	return bb.String()
}

var minUsagePadding = 25

func (c *Command) UsagePadding() int {
	if c.parent == nil || minUsagePadding > c.parent.commandsMaxUseLen {
Repository: spf13/cobra
File: command.go (Go)

Code before:

// HelpFunc returns either the function set by SetHelpFunc for this command
// or a parent, or it returns a function which calls c.Help()
func (c *Command) HelpFunc() func(*Command, []string) {
	cmd := c
	for cmd != nil {
		if cmd.helpFunc != nil {
			return cmd.helpFunc
		}
		cmd = cmd.parent
	}
	return func(*Command, []string) {
		err := c.Help()
		if err != nil {
			c.Println(err)
		}
	}
}

var minUsagePadding = 25

func (c *Command) UsagePadding() int {
	if c.parent == nil || minUsagePadding > c.parent.commandsMaxUseLen {
		return minUsagePadding
	}
	return c.parent.commandsMaxUseLen
}

var minCommandPathPadding = 11

//
func (c *Command) CommandPathPadding() int {
	if c.parent == nil || minCommandPathPadding > c.parent.commandsMaxCommandPathLen {
		return minCommandPathPadding
	}
	return c.parent.commandsMaxCommandPathLen
}

var minNamePadding = 11

func (c *Command) NamePadding() int {
	if c.parent == nil || minNamePadding > c.parent.commandsMaxNameLen {
		return minNamePadding
	}
	return c.parent.commandsMaxNameLen
}

func (c *Command) UsageTemplate() string {
	if c.usageTemplate != "" {
		return c.usageTemplate
	}

Review comment (suggestion):
The problem is that `Usage()` is public, so anyone calling `Usage()` will not get the same result.  If `Usage()` were `usage()` that would be fine.


Code after:
}

// HelpFunc returns either the function set by SetHelpFunc for this command
// or a parent, or it returns a function which calls c.Help()
func (c *Command) HelpFunc() func(*Command, []string) {
	cmd := c
	for cmd != nil {
		if cmd.helpFunc != nil {
			return cmd.helpFunc
		}
		cmd = cmd.parent
	}
	return func(*Command, []string) {
		err := c.Help()
		if err != nil {
			c.Println(err)
		}
	}
}

// Output the usage for the command
// Used when a user provides invalid input
// Can be defined by user by overriding UsageFunc
func (c *Command) Usage() error {
	c.mergePersistentFlags()
	err := tmpl(c.getOutOrStderr(), c.UsageTemplate(), c)
	return err
}

// Output the help for the command
// Used when a user calls help [command]
// by the default HelpFunc in the commander
func (c *Command) Help() error {
	c.mergePersistentFlags()
	err := tmpl(c.getOutOrStdout(), c.HelpTemplate(), c)
	return err
}

func (c *Command) UsageString() string {
	tmpOutput := c.output
	bb := new(bytes.Buffer)
	c.SetOutput(bb)
	c.Usage()
	c.output = tmpOutput
	return bb.String()
}

var minUsagePadding = 25

func (c *Command) UsagePadding() int {
	if c.parent == nil || minUsagePadding > c.parent.commandsMaxUseLen {
Repository: spf13/cobra
File: command.go (Go)

Code before:
			})
		}
		if x.HasPersistentFlags() {
			x.pflags.VisitAll(func(f *flag.Flag) {
				if x.HasFlags() {
					if x.flags.Lookup(f.Name) == nil {
						c.Println("  -"+f.Shorthand+",", "--"+f.Name, "["+f.DefValue+"]", "", f.Value, "  [P]")
					}
				} else {
					c.Println("  -"+f.Shorthand+",", "--"+f.Name, "["+f.DefValue+"]", "", f.Value, "  [P]")
				}
			})
		}
		if x.HasSubCommands() {
			for _, y := range x.commands {
				debugflags(y)
			}
		}
	}

	debugflags(c)
}

// Name returns the command's name: the first word in the use line.
func (c *Command) Name() string {
	if c.name != "" {
		return c.name
	}
	name := c.Use
	i := strings.Index(name, " ")
	if i >= 0 {
		name = name[:i]
	}
	c.name = name
	return c.name
}

// HasAlias determines if a given string is an alias of the command.
func (c *Command) HasAlias(s string) bool {
	for _, a := range c.Aliases {
		if a == s {
			return true
		}
	}
	return false
}

// NameAndAliases returns string containing name and all aliases
func (c *Command) NameAndAliases() string {
	return strings.Join(append([]string{c.Name()}, c.Aliases...), ", ")
}

Review comment (suggestion):
I'm good with the whole PR until here. Why do the entire work of the function inside a conditional? I much prefer early returns to blocks of code inside conditionals. But you are more active than me these days, if you strongly prefer this style fix I won't stand in your way.

Code after:
			})
		}
		if x.HasPersistentFlags() {
			x.pflags.VisitAll(func(f *flag.Flag) {
				if x.HasFlags() {
					if x.flags.Lookup(f.Name) == nil {
						c.Println("  -"+f.Shorthand+",", "--"+f.Name, "["+f.DefValue+"]", "", f.Value, "  [P]")
					}
				} else {
					c.Println("  -"+f.Shorthand+",", "--"+f.Name, "["+f.DefValue+"]", "", f.Value, "  [P]")
				}
			})
		}
		if x.HasSubCommands() {
			for _, y := range x.commands {
				debugflags(y)
			}
		}
	}

	debugflags(c)
}

// Name returns the command's name: the first word in the use line.
func (c *Command) Name() string {
	if c.name == "" {
		name := c.Use
		i := strings.Index(name, " ")
		if i >= 0 {
			name = name[:i]
		}
		c.name = name
	}
	return c.name
}

// HasAlias determines if a given string is an alias of the command.
func (c *Command) HasAlias(s string) bool {
	for _, a := range c.Aliases {
		if a == s {
			return true
		}
	}
	return false
}

// NameAndAliases returns string containing name and all aliases
func (c *Command) NameAndAliases() string {
	return strings.Join(append([]string{c.Name()}, c.Aliases...), ", ")
}
Repository: spf13/cobra
File: command.go (Go)

Code before:

	// initialize help as the last point possible to allow for user
	// overriding
	c.InitDefaultHelpCmd()

	args := c.args

	// Workaround FAIL with "go test -v" or "cobra.test -test.v", see #155
	if c.args == nil && filepath.Base(os.Args[0]) != "cobra.test" {
		args = os.Args[1:]
	}

	var flags []string
	if c.TraverseChildren {
		cmd, flags, err = c.Traverse(args)
	} else {
		cmd, flags, err = c.Find(args)
	}
	if err != nil {
		// If found parse to a subcommand and then failed, talk about the subcommand
		if cmd != nil {
			c = cmd
		}
		if !c.SilenceErrors {
			c.PrintErrln("Error:", err.Error())
			c.PrintErr(fmt.Sprintf("Run '%v --help' for usage.\n", c.CommandPath()))
		}
		return c, err
	}

	cmd.commandCalledAs.called = true
	if cmd.commandCalledAs.name == "" {
		cmd.commandCalledAs.name = cmd.Name()
	}

	err = cmd.execute(flags)
	if err != nil {
		// Always show help if requested, even if SilenceErrors is in
		// effect
		if err == flag.ErrHelp {
			cmd.HelpFunc()(cmd, args)
			return cmd, nil
		}

		// If command wasn't runnable, show full help, but do return the error.
		// This will result in apps by default returning a non-success exit code, but also gives them the option to
		// handle specially.
		if err == ErrSubCommandRequired {
			cmd.HelpFunc()(cmd, args)
			return cmd, err
		}

Review comment (suggestion):
As @marckhouzam has mentioned, seems like `PrintErrf()` should be used here.

Code after:

// Execute uses the args (os.Args[1:] by default)
// and run through the command tree finding appropriate matches
// for commands and then corresponding flags.
func (c *Command) Execute() error {
	_, err := c.ExecuteC()
	return err
}

// ExecuteC executes the command.
func (c *Command) ExecuteC() (cmd *Command, err error) {
	if c.ctx == nil {
		c.ctx = context.Background()
	}

	// Regardless of what command execute is called on, run on Root only
	if c.HasParent() {
		return c.Root().ExecuteC()
	}

	// windows hook
	if preExecHookFn != nil {
		preExecHookFn(c)
	}

	// initialize help as the last point possible to allow for user
	// overriding
	c.InitDefaultHelpCmd()

	args := c.args

	// Workaround FAIL with "go test -v" or "cobra.test -test.v", see #155
	if c.args == nil && filepath.Base(os.Args[0]) != "cobra.test" {
		args = os.Args[1:]
	}

	// initialize the hidden command to be used for bash completion
	c.initCompleteCmd(args)

	var flags []string
	if c.TraverseChildren {
		cmd, flags, err = c.Traverse(args)
	} else {
		cmd, flags, err = c.Find(args)
	}
	if err != nil {
		// If found parse to a subcommand and then failed, talk about the subcommand
		if cmd != nil {
			c = cmd
		}
		if !c.SilenceErrors {