From: Vincent Lefevre <vincent@vinc17.org>
To: zsh-users@sunsite.dk
Subject: Re: coloring STDERR to terminal
Date: Fri, 2 Jul 2004 14:42:59 +0200 [thread overview]
Message-ID: <20040702124259.GS2033@ay.vinc17.org> (raw)
In-Reply-To: <Pine.LNX.4.60.0407011645450.16728@toltec.zanshin.com>
On 2004-07-01 17:11:08 -0700, Bart Schaefer wrote:
> So I'm forced to conclude that there really is no way to avoid the
> race condition that you originally complained about; my first
> solution is as good as it gets. You might get close if you used
> "read -t 1 ..." to make the parent shell sleep so the kernel can
> schedule the coprocess first, but then you'd have an annoying
> 1-second delay on almost every prompt. Sorry.
I have a better solution. stderr is redirected with
exec 2>>(while read line; do
print '\e[91m'${(q)line}'\e[0m' > /dev/tty; done &)
as you suggested (this avoids the coprocess in the jobs table).
Now, in precmd(), adding the following line solves the problem:
sleep 0
Of course, this won't completely avoid the race condition, but it
improves things in pratice. I assume that this forces the scheduler
to switch to another process, and in practice, the coprocess is
scheduled before precmd() is resumed.
--
Vincent Lefèvre <vincent@vinc17.org> - Web: <http://www.vinc17.org/>
100% validated (X)HTML - Acorn / RISC OS / ARM, free software, YP17,
Championnat International des Jeux Mathématiques et Logiques, etc.
Work: CR INRIA - computer arithmetic / SPACES project at LORIA
next prev parent reply other threads:[~2004-07-02 12:44 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-27 23:22 Atom 'Smasher'
2004-06-28 0:06 ` ari
2004-06-28 0:36 ` Atom 'Smasher'
2004-06-29 15:43 ` Bart Schaefer
2004-06-29 16:08 ` Vincent Lefevre
2004-06-29 17:14 ` Bart Schaefer
2004-06-30 7:09 ` Vincent Lefevre
2004-06-30 10:52 ` Bart Schaefer
2004-06-30 11:43 ` Vincent Lefevre
2004-06-30 12:01 ` Vincent Lefevre
2004-06-30 16:56 ` Bart Schaefer
2004-07-01 18:14 ` Vincent Lefevre
2004-07-02 0:11 ` Bart Schaefer
2004-07-02 12:42 ` Vincent Lefevre [this message]
2004-07-02 21:32 ` Bart Schaefer
2004-07-20 9:10 ` Atom 'Smasher'
2004-07-20 16:10 ` Bart Schaefer
2004-07-20 19:27 ` Atom 'Smasher'
2004-07-20 21:15 ` Bart Schaefer
2004-07-20 23:30 ` Wayne Davison
2004-07-21 3:15 ` Bart Schaefer
2004-07-21 6:23 ` Wayne Davison
2004-07-21 7:30 ` Bart Schaefer
2004-07-21 13:19 ` Vincent Lefevre
2004-07-30 11:50 ` Andy Spiegl
2004-07-30 23:44 ` Vincent Lefevre
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20040702124259.GS2033@ay.vinc17.org \
--to=vincent@vinc17.org \
--cc=zsh-users@sunsite.dk \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/zsh/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).