From 9a8892c52603f02f28406f57660ba2f7a9af4759 Mon Sep 17 00:00:00 2001
From: brad-defined <77982333+brad-defined@users.noreply.github.com>
Date: Tue, 22 Nov 2022 21:55:27 -0500
Subject: [PATCH] Fix 756 SSH command line parsing error to write to user
 instead of stderr (#757)

---
 sshd/command.go | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/sshd/command.go b/sshd/command.go
index 8296ef4c8..900b01e5b 100644
--- a/sshd/command.go
+++ b/sshd/command.go
@@ -40,8 +40,13 @@ func execCommand(c *Command, args []string, w StringWriter) error {
 	if c.Flags != nil {
 		fl, fs = c.Flags()
 		if fl != nil {
-			//TODO: handle the error
-			fl.Parse(args)
+			// SetOutput() here in case fl.Parse dumps usage.
+			fl.SetOutput(w.GetWriter())
+			err := fl.Parse(args)
+			if err != nil {
+				// fl.Parse has dumped error information to the user via the w writer.
+				return err
+			}
 			args = fl.Args()
 		}
 	}