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Date: Sun, 28 Apr 2013 17:30:56 +0200
From: Yuri D'Elia <wavexx@thregr.org>
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To: Bart Schaefer <schaefer@brasslantern.com>
CC: Yuri D'Elia <wavexx@users.sourceforge.net>, zsh-workers@zsh.org
Subject: Re: precmd: write error: interrupted
References: <klbmnc$ieh$1@ger.gmane.org> <130425111646.ZM17258@torch.brasslantern.com>	<klc2ah$jiv$1@ger.gmane.org> <130426080805.ZM18619@torch.brasslantern.com> <517C0E09.4040505@users.sourceforge.net> <130427153141.ZM20125@torch.brasslantern.com>
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On 04/28/2013 12:31 AM, Bart Schaefer wrote:
> What you've been reporting is almost certainly another variation of the
> same bug.  So maybe all we really need is this (plus some #ifdef):
>
> diff --git a/Src/utils.c b/Src/utils.c
> index 26e2a5c..a20a5e1 100644
> --- a/Src/utils.c
> +++ b/Src/utils.c
> @@ -1323,7 +1323,9 @@ preprompt(void)
>
>       /* If a shell function named "precmd" exists, *
>        * then execute it.                           */
> +    signal_block(signal_mask(SIGWINCH));  /* See zleread() */
>       callhookfunc("precmd", NULL, 1, NULL);
> +    signal_unblock(signal_mask(SIGWINCH));
>       if (errflag)
>          return;

This is going to solve the issue for "precmd" only though, not the 
SIGWHINCH issue as a whole.

You can still arbitrarily stop the example loop I shown before by 
resizing the terminal window.