From 3f108aae75cdfaba68895d973ffeccf1c884506e Mon Sep 17 00:00:00 2001
From: Vicki Pfau <vi@endrift.com>
Date: Mon, 10 Apr 2023 03:02:51 -0700
Subject: [PATCH] Scripting: Re-fix some Lua string handling (fixes #2877)

---
 src/script/engines/lua.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/script/engines/lua.c b/src/script/engines/lua.c
index 2a03ba052..c37bd607e 100644
--- a/src/script/engines/lua.c
+++ b/src/script/engines/lua.c
@@ -911,7 +911,11 @@ bool _luaLoad(struct mScriptEngineContext* ctx, const char* filename, struct VFi
 				lastSlash = lastBackslash;
 			}
 			if (lastSlash) {
-				strlcpy(dirname, filename, lastSlash - filename);
+				size_t len = lastSlash - filename + 1;
+				if (sizeof(dirname) < len) {
+					len = sizeof(dirname);
+				}
+				strlcpy(dirname, filename, len);
 			}
 			snprintf(name, sizeof(name), "@%s", filename);
 		}