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From: Bart Schaefer <schaefer@brasslantern.com>
Message-id: <100322075703.ZM21762@torch.brasslantern.com>
Date: Mon, 22 Mar 2010 07:57:03 -0700
In-reply-to: <20100322084226.GA26739@fermat.math.technion.ac.il>
Comments: In reply to "Nadav Har'El" <nyh@math.technion.ac.il>
 "Re: Append cancelled commands to history" (Mar 22, 10:42am)
References: <c16a574a0809181450t61a5b5ddq2e80797fde37636e@mail.gmail.com>
	<20080919162045.GA22435@ruderich.org>
	<20090706151644.6BF508027106@bifrost.dotsrc.org>
	<20090706154309.GA15663@fermat.math.technion.ac.il>
	<20090706155337.GB15663@fermat.math.technion.ac.il>
	<20100315164237.GA23224@fermat.math.technion.ac.il>
	<100320105027.ZM20067@torch.brasslantern.com>
	<20100322084226.GA26739@fermat.math.technion.ac.il>
X-Mailer: OpenZMail Classic (0.9.2 24April2005)
To: zsh-workers@zsh.org
Subject: Bug with ZLE special variables and traps?
MIME-version: 1.0
Content-type: text/plain; charset=us-ascii

Hey, zsh-workers:  Is this a recently-introduced bug?  Why is PREBUFFER
empty in a signal handler at patchlevel 1.4940 when it is not at 1.4705?


On Mar 22, 10:42am, Nadav Har'El wrote:
} Subject: Re: Append cancelled commands to history
}
} On Sat, Mar 20, 2010, Bart Schaefer wrote about "Re: Append cancelled commands to history":
} > 
} > Hmm.  When I use TRAPINT, $PREBUFFER is always empty.
} > 
} > torch% print $ZSH_VERSION $ZSH_PATCHLEVEL 
} > 4.3.10-dev-1 1.4940
} 
} Thanks for the explanations. For me, $PREBUFFER does work:
} 
} $ print $ZSH_VERSION $ZSH_PATCHLEVEL
} 4.3.10 1.4705
} $ cat /etc/redhat-release; rpm -qf =zsh
} Fedora release 12 (Constantine)
} zsh-4.3.10-4.fc12.x86_64
} 
} $ functions TRAPINT
} TRAPINT () {
}         zle && [[ $HISTNO -eq $HISTCMD ]] && print -s -r -- "$PREBUFFER$BUFFER"
}         echo "prebuffer: '$PREBUFFER'"
}         return $1
} }
} 
} $ for i in *
} for> do
} for> echo<INTERRUPT>prebuffer: 'for i in *
} do
} '
} 
} $

torch% echo $ZSH_VERSION $ZSH_PATCHLEVEL
4.3.10-dev-1 1.4940
torch% TRAPINT () {
function> zle && [[ $HISTNO -eq $HISTCMD ]] && print -s -r -- "$PREBUFFER$BUFFER"
function> echo "prebuffer: '$PREBUFFER'"
function> return $1
function> }
torch% for i in *
for> do
for> echoprebuffer: ''

torch%