From 411c533fd2a59860c0d04b36a6c309d7c0342b34 Mon Sep 17 00:00:00 2001
From: Jim Blandy <jimb@redhat.com>
Date: Thu, 10 Jun 1993 06:21:19 +0000
Subject: [PATCH] * sysdep.c: Remove clause for DGUX support of FASYNC; add
 clause 	to #undef FASYNC if BROKEN_FASYNC is #defined.

---
 src/sysdep.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/sysdep.c b/src/sysdep.c
index b7aa5d4bf0e..49744430560 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -104,10 +104,14 @@ extern char *sys_errlist[];
 #endif
 #endif /* not 4.1 bsd */
 
-/* Get DGUX definition for FASYNC - DJB */
-#ifdef DGUX
-#include <sys/file.h>
-#endif /* DGUX */
+#ifdef BROKEN_FASYNC
+/* On some systems (DGUX comes to mind real fast) FASYNC causes
+   background writes to the terminal to stop all processes in the
+   process group when invoked under the csh (and probably any shell
+   with job control). This stops Emacs dead in its tracks when coming
+   up under X11. */
+#undef FASYNC
+#endif
 
 #include <sys/ioctl.h>
 #include "systty.h"
-- 
2.30.2