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Explain that sentinels cannot run recursively.

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This commit is contained in:
Richard M. Stallman 2002-04-07 18:58:06 +00:00
parent 39296e3af8
commit 8a56d8ed33
1 changed files with 5 additions and 0 deletions
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5
lispref/processes.texi
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@ -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