skip print section flags if no flags

Kubernetes-commit: 01195efbe3a2b7beefdf7308193818fd37790254
2018-08-17 17:20:05 +08:00 · 2018-08-17 17:20:05 +08:00 · eaef210960
parent 838b98e1f1
commit eaef210960
1 changed files with 3 additions and 0 deletions
--- a/pkg/util/flag/sectioned.go
+++ b/pkg/util/flag/sectioned.go
@ -52,6 +52,9 @@ func (nfs *NamedFlagSets) FlagSet(name string) *pflag.FlagSet {
 func PrintSections(w io.Writer, fss NamedFlagSets, cols int) {
 	for _, name := range fss.Order {
 		fs := fss.FlagSets[name]
+		if !fs.HasFlags() {
+			continue
+		}

 		wideFS := pflag.NewFlagSet("", pflag.ExitOnError)
 		wideFS.AddFlagSet(fs)