From 7074fde6640c88db886be0fcc4182e3790936d7d Mon Sep 17 00:00:00 2001
From: Francesco Potortì <pot@gnu.org>
Date: Mon, 21 Nov 1994 12:50:27 +0000
Subject: Added code for automatically saving and restoring the match data when
 a filter or sentinel tries to modify it.

---
 src/emacs.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/emacs.c')

diff --git a/src/emacs.c b/src/emacs.c
index bfc83b8708..ae13412fc8 100644
--- a/src/emacs.c
+++ b/src/emacs.c
@@ -98,6 +98,10 @@ int inhibit_window_system;
    priority; Those functions have their own extern declaration.  */
 int emacs_priority;
 
+/* If non-zero a filter or a sentinel is running.  Tested to save the match
+   data on the first attempt to change it inside asynchronous code. */
+int running_asynch_code;
+
 #ifdef BSD_PGRPS
 /* See sysdep.c.  */
 extern int inherited_pgroup;
@@ -697,6 +701,7 @@ Usage: %s [-t term] [--terminal term]  [-nw] [--no-windows]  [--batch]\n\
   init_alloc ();
   init_eval ();
   init_data ();
+  running_asynch_code = 0;
 
 #ifdef MSDOS
   /* Call early 'cause init_environment needs it.  */
-- 
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