From 4f5adbd34698c507e3aa842a213613d455211fac Mon Sep 17 00:00:00 2001
From: Alan Carvalho de Assis <acassis@gmail.com>
Date: Thu, 6 Aug 2026 09:27:45 -0300
Subject: [PATCH] system/readline: Fix espace sequence returning to user
 console

This commit fixes the issue:
https://github.com/apache/nuttx-apps/issues/3680

Signed-off-by: Alan C. Assis <acassis@gmail.com>
Assisted-by: Claude Code
---
 system/readline/readline_common.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/system/readline/readline_common.c b/system/readline/readline_common.c
index 1642e035e..872fcf768 100644
--- a/system/readline/readline_common.c
+++ b/system/readline/readline_common.c
@@ -1598,7 +1598,10 @@ ssize_t readline_common(FAR struct rl_common_s *vtbl, FAR char *buf,
 
               buf[cursor] = (char)ch; nch++; cursor++;
 #  ifdef CONFIG_READLINE_ECHO
-              redraw_tail(vtbl, buf, nch, cursor);
+              if (cursor < nch)
+                {
+                  redraw_tail(vtbl, buf, nch, cursor);
+                }
 #  endif
             }
 #else