From f3196135c106ea0a61af7326cfa383df2f023410 Mon Sep 17 00:00:00 2001
From: Mark Nudelman <markn@greenwoodsoftware.com>
Date: Sat, 2 Jan 2021 16:43:21 -0800
Subject: [PATCH] Protect from buffer overrun.
---
 decode.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/decode.c b/decode.c
index eb0c639..de8d620 100644
--- a/decode.c
+++ b/decode.c
@@ -941,8 +941,8 @@ editchar(c, flags)
 		usercmd[nch+1] = '\0';
 		nch++;
 		action = ecmd_decode(usercmd, &s);
-	} while (action == A_PREFIX);
-	
+	} while (action == A_PREFIX && nch < MAX_CMDLEN);
+
 	if (flags & EC_NORIGHTLEFT)
 	{
 		switch (action)
-- 
1.8.3.1