From: bperkins@netspace.org
To: zsh-users@sunsite.dk
Subject: signals in loops
Date: Mon, 21 Oct 2002 22:49:31 -0400 [thread overview]
Message-ID: <200210220249.g9M2nVO29377@throb.netspace.org> (raw)
I've been using zsh for a while, and I'd swear you used to be able to
do this:
for foo in 1 2 3 4 5 6 ; do xmessage $foo; done
and you could give control-c to kill the xmessage and the next one
would pop up. In fact in a bash FAQ I found (which has this same
behavior, BTW), it said that if you wanted this to happen (with control-z
anyway), you have to type:
(for foo in 1 2 3 4 5 6 ; do xmessage $foo; done)
Which make complete sense to me, since the for loop can't receive a
signal unless it's a subshell.
It seems that this essentially does things the old way:
( trap continue INT; for foo in 1 2 3 4 5 ; do xmessage $foo ; done)
Which brings up a mostly acidemic question, what is the default
"trap?"
It seems to be something like:
trap "break -1" INT
Assuming that break -1 breaks from all loops.
--
"I know you believe you understand what you think I said, but I am not
sure you realise that what you heard is not what I meant."
-- Alan Greenspan
Brian Perkins bperkins@netspace.org
next reply other threads:[~2002-10-22 2:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-22 2:49 bperkins [this message]
2002-10-22 15:50 ` Bart Schaefer
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=200210220249.g9M2nVO29377@throb.netspace.org \
--to=bperkins@netspace.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).