Avoid relying on Cobra help internals

command/hackyHelp.go

@@ -1,40 +0,0 @@
-package command
-
-import (
-	"fmt"
-	"io"
-	"strings"
-	"text/template"
-	"unicode"
-
-	"github.com/spf13/cobra"
-)
-
-func hackyHelp(command *cobra.Command) {
-	trimRightSpace := func(s string) string {
-		return strings.TrimRightFunc(s, unicode.IsSpace)
-	}
-
-	rpad := func(s string, padding int) string {
-		template := fmt.Sprintf("%%-%ds", padding)
-		return fmt.Sprintf(template, s)
-	}
-
-	templateFuncs := template.FuncMap{
-		"trim":                    strings.TrimSpace,
-		"trimTrailingWhitespaces": trimRightSpace,
-		"rpad":                    rpad,
-	}
-
-	tmpl := func(w io.Writer, text string, data interface{}) error {
-		t := template.New("top")
-		t.Funcs(templateFuncs)
-		template.Must(t.Parse(text))
-		return t.Execute(w, data)
-	}
-
-	err := tmpl(command.OutOrStdout(), command.HelpTemplate(), command)
-	if err != nil {
-		command.Println(err)
-	}
-}

command/root.go

@@ -28,6 +28,7 @@ var Version = "DEV"
 var BuildDate = "" // YYYY-MM-DD
 
 var versionOutput = ""
+var cobraDefaultHelpFunc func(*cobra.Command, []string)
 
 func init() {
 	if Version == "DEV" {
@@ -51,6 +52,7 @@ func init() {
 	// TODO:
 	// RootCmd.PersistentFlags().BoolP("verbose", "V", false, "enable verbose output")
 
+	cobraDefaultHelpFunc = RootCmd.HelpFunc()
 	RootCmd.SetHelpFunc(rootHelpFunc)
 
 	RootCmd.SetFlagErrorFunc(func(cmd *cobra.Command, err error) error {
@@ -250,7 +252,7 @@ func determineBaseRepo(cmd *cobra.Command, ctx context.Context) (ghrepo.Interfac
 
 func rootHelpFunc(command *cobra.Command, s []string) {
 	if command != RootCmd {
-		hackyHelp(command)
+		cobraDefaultHelpFunc(command, s)
 		return
 	}