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From: Bart Schaefer <schaefer@brasslantern.com>
To: zsh-workers@zsh.org
Subject: Re: [PATCH] make OLDPWD influence 'cd -'
Date: Thu, 02 Jun 2011 23:59:36 -0700	[thread overview]
Message-ID: <110602235938.ZM16470@torch.brasslantern.com> (raw)
In-Reply-To: <225f0be.6cc0.13053a1119b.Coremail.hanpingtian@163.com>

On Jun 3, 11:52am, hanpingtian wrote:
} Subject: [PATCH] make OLDPWD influence 'cd -'
} 
} This patch will let zsh check OLDPWD before run 'cd -', so let OLDPWD
} influence it:
} [hpt@hpt]~% echo $OLDPWD
} /home/hpt
} [hpt@hpt]~% vared OLDPWD
} /tmp
} [hpt@hpt]~% cd -
} /tmp
} [hpt@hpt]/tmp% pwd
} /tmp

Hmm.  Aside from the fact that this makes OLDPWD sort of half a special
variable -- it at least moves it from the "set by the shell" category
into "used by the shell" -- I think putting this behavior into the "cd"
command may not be the best place for it.

In particular, it means that "cd -" and "cd ~-" become different things,
where currently they're all equivalent.  Further, it affects "pushd -"
so that it no longer refers to the top of the directory stack.

-- 


  reply	other threads:[~2011-06-03  6:59 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-03  3:52 hanpingtian
2011-06-03  6:59 ` Bart Schaefer [this message]
2011-06-03 10:35 ` hanpingtian

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