Skip right column if the left is empty

1 files changed, 3 insertions, 0 deletions

diff --git a/usage.go b/usage.go
index fc8b09a..4704183 100644
--- a/usage.go
+++ b/usage.go
@@ -117,6 +117,9 @@ func (p *Parser) writeUsageForCommand(w io.Writer, cmd *command) {
 }
 
 func printTwoCols(w io.Writer, left, help string, defaultVal string, envVal string) {
+	if left == "" {
+		return
+	}
 	lhs := "  " + left
 	fmt.Fprint(w, lhs)
 	if help != "" {