From: Peter Stephenson <pws@csr.com>
To: zsh-workers@sunsite.dk
Subject: Re: trap DEBUG should get run beforehand, not afterwards.
Date: Wed, 30 Jul 2008 09:23:39 +0100 [thread overview]
Message-ID: <200807300823.m6U8Ndvs016235@news01.csr.com> (raw)
In-Reply-To: <6cd6de210807291937p5e864c38o6dd9785acf62632c@mail.gmail.com>
"Rocky Bernstein" wrote:
> Think for example about whether you'd like to know that 'rm -fr *' is
> about to occur or just occurred.
>
> ksh introduced trap DEBUG and bash, and zsh copied it. Both ksh and
> bash originally ran after the statement; I guess because that is same
> as other traps. However both have switched so that it is run before
> the statement.
>
> Alas, it's impossible to contemplate writing any sort of serious
> debugger unless "trap DEBUG" gets run beforehand.
Use the option DEBUG_BEFORE_CMD.
--
Peter Stephenson <pws@csr.com> Software Engineer
CSR PLC, Churchill House, Cambridge Business Park, Cowley Road
Cambridge, CB4 0WZ, UK Tel: +44 (0)1223 692070
next prev parent reply other threads:[~2008-07-30 8:23 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-30 2:37 Rocky Bernstein
2008-07-30 8:23 ` Peter Stephenson [this message]
2008-07-30 13:24 ` Rocky Bernstein
2008-07-30 13:38 ` Bart Schaefer
2008-07-30 14:01 ` Rocky Bernstein
2008-07-30 13:27 ` Richard Hartmann
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