From: Richard M. Stallman <rms@gnu.org>
Date: Sun, 7 Apr 2002 18:58:06 +0000 (+0000)
Subject: Explain that sentinels cannot run recursively.
X-Git-Tag: ttn-vms-21-2-B4~15755
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=8a56d8ed331be880a2f7be05b15886bd7acb269d;p=emacs.git

Explain that sentinels cannot run recursively.
---

diff --git a/lispref/processes.texi b/lispref/processes.texi
index 81023719429..0b5786f2cd8 100644
--- a/lispref/processes.texi
+++ b/lispref/processes.texi
@@ -1297,6 +1297,11 @@ programs was running when the sentinel was started.  However, if
 off.  This makes it possible to use the Lisp debugger to debug the
 sentinel.  @xref{Debugger}.
 
+  While a sentinel is running, the process sentinel is temporarily
+set to @code{nil} so that the sentinel won't run recursively.
+For this reason it is not possible for a sentinel to specify
+a new sentinel.
+
   In earlier Emacs versions, every sentinel that did regular expression
 searching or matching had to explicitly save and restore the match data.
 Now Emacs does this automatically for sentinels; they never need to do