From: Thierry Volpiatto <thierry.volpiatto@gmail.com>
To: help-gnu-emacs@gnu.org
Subject: Re: start-process and set-process-filter sequence
Date: Thu, 14 Apr 2011 07:11:55 +0200 [thread overview]
Message-ID: <878vvdpgbo.fsf@gmail.com> (raw)
In-Reply-To: 21glbp094jfn.fsf@gmail.com
William Xu <william.xwl@gmail.com> writes:
> Hi,
>
> Because set-process-filter will be done after the process is created by
> start-process, it seems there is a possibility that the filter may miss
> some process output. Consider this:
>
> (defun foo (proc output)
> (setq a output))
>
> (let ((proc (start-process "ls" "ls" "ls")))
> ;; (read-string "Mood: ")
> (setq a nil)
> (set-process-filter proc 'foo))
>
> Compare comment and uncomment the read-string line, `a' would be
> different.
>
> Is there a way to set a process filter before the process starts? so
> that we won't miss any output.
prog1
something like this:
--8<---------------cut here---------------start------------->8---
(prog1
(start-process "ls" "ls" "ls")
(set-process-filter (get-process "ls") 'foo)
(setq a nil)
;(read-string "Mood: ")
)
--8<---------------cut here---------------end--------------->8---
--
A+ Thierry
Get my Gnupg key:
gpg --keyserver pgp.mit.edu --recv-keys 59F29997
next prev parent reply other threads:[~2011-04-14 5:11 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-14 3:10 start-process and set-process-filter sequence William Xu
2011-04-14 5:11 ` Thierry Volpiatto [this message]
2011-04-14 8:22 ` William Xu
2011-04-14 12:02 ` Thien-Thi Nguyen
2011-04-15 2:16 ` William Xu
2011-04-15 10:01 ` Thien-Thi Nguyen
2011-04-14 14:02 ` Thierry Volpiatto
2011-04-15 2:21 ` William Xu
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