From 911164a17bf3379cb3624f01525bb6cd45f8cb00 Mon Sep 17 00:00:00 2001
From: Nicklas Larsson <n_larsson@yahoo.com>
Date: Mon, 26 Dec 2022 20:19:52 +0100
Subject: [PATCH] lib/display: issue warning on GRASS_NOTIFY command failure
 (#2705)

---
 lib/display/r_raster.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/display/r_raster.c b/lib/display/r_raster.c
index 471c2211520..4878681a9fa 100644
--- a/lib/display/r_raster.c
+++ b/lib/display/r_raster.c
@@ -167,8 +167,8 @@ void D_close_driver(void)
 
     COM_Graph_close();
 
-    if (cmd)
-        system(cmd);
+    if (cmd && system(cmd) == -1)
+        G_warning(_("GRASS_NOTIFY command <%s> failed"), cmd);
 }
 
 /*!