From: Bart Schaefer <schaefer@brasslantern.com>
To: "Zsh Hackers' List" <zsh-workers@zsh.org>
Subject: Re: "VAR=foo export VAR" no longer works in zsh emulation
Date: Tue, 24 Jan 2017 14:24:17 -0800 (PST) [thread overview]
Message-ID: <alpine.LRH.2.00.1701241419040.4560@toltec.zanshin.com> (raw)
In-Reply-To: <20170124175258.78b0554e@pwslap01u.europe.root.pri>
On Tue, 24 Jan 2017, Peter Stephenson wrote:
> It looks up to 5.2 you don't need the option, and this changed in the
> commit below.
>
> So it's less sh compatibility, as it still works there, and more
> backward compatilibity in zsh.
>
> pws
>
> commit c8de0af35935602370cc79193d0e0d53971250d4
> Author: Barton E. Schaefer <schaefer@zsh.org>
> Date: Mon Sep 19 00:25:13 2016 -0700
>
> 39381: handle save/restore of variable values when "typeset"-related reserved words are prefixed by an assignment
Hrm, this is a bit ugly.
It might be possible to fix this for "export" by a special-case on the
command name, but it's going to be nearly impossible to make "typeset -x"
behave equivalently, because the save/restore is generic in exec.c where
we barely know what command we're about to run, and we don't learn that
we're exporting until the depths of bin_typeset(), nor propagate that
back out in any way.
next prev parent reply other threads:[~2017-01-24 22:24 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20170124135040eucas1p11db129a17c1993a5b2d428ef9401bbf9@eucas1p1.samsung.com>
2017-01-24 13:50 ` Fw: " Peter Stephenson
[not found] ` <CGME20170124163239eucas1p1a2fc806430fa49f6e0c9ec83fe42b676@eucas1p1.samsung.com>
2017-01-24 16:32 ` Peter Stephenson
2017-01-24 16:34 ` Bart Schaefer
2017-01-24 16:42 ` Bart Schaefer
2017-01-24 17:52 ` Peter Stephenson
2017-01-24 22:24 ` Bart Schaefer [this message]
2017-01-24 16:44 ` Peter Stephenson
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