From: Andre Albsmeier <Andre.Albsmeier@siemens.com>
To: Bart Schaefer <schaefer@brasslantern.com>
Cc: Andre Albsmeier <Andre.Albsmeier@siemens.com>, zsh-users@zsh.org
Subject: Re: exec'ing $0 in traps
Date: Sat, 18 Feb 2017 11:24:22 +0100 [thread overview]
Message-ID: <20170218102422.GA67180@bali> (raw)
In-Reply-To: <170217120219.ZM11847@torch.brasslantern.com>
On Fri, 17-Feb-2017 at 12:02:19 -0800, Bart Schaefer wrote:
> On Feb 17, 9:16am, Andre Albsmeier wrote:
> }
> } #!/bin/zsh
> }
> } echo started
> } trap 'echo trapped; exec "$0"' 1
> }
> } echo $$ > /tmp/blafasel
> }
> } while read line; do
> } echo line $line
> } done
>
> Some combination of the "read" builtin plus calling "exec" from inside
> the signal handler is causing the HUP signal to remain blocked across
> the "exec" -- and re-installing the trap doesn't unblock it.
Too bad. Maybe this gets fixed one day. Meanwhile I use this:
#!/bin/zsh
restart=""
echo started
trap 'restart=1' 1
echo $$ > /tmp/blafasel
while :; do
[ $restart ] && exec $0
read line || exit 0
echo line $line
done
and it seems to do what I need...
prev parent reply other threads:[~2017-02-18 10:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-17 8:16 Andre Albsmeier
2017-02-17 20:02 ` Bart Schaefer
2017-02-18 10:24 ` Andre Albsmeier [this message]
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