From: Zoltan Hidvegi <hzoli@cs.elte.hu>
To: zefram@dcs.warwick.ac.uk (Zefram)
Cc: schaefer@nbn.com, zsh-workers@math.gatech.edu
Subject: Re: pushd
Date: Thu, 17 Oct 1996 00:28:22 +0200 (MET DST) [thread overview]
Message-ID: <199610162228.AAA00459@hzoli.ppp.cs.elte.hu> (raw)
In-Reply-To: <5016.199610161810@stone.dcs.warwick.ac.uk> from Zefram at "Oct 16, 96 07:10:53 pm"
> Oh, what was the reasoning behind requiring "(UID=123; foo)" where
> "UID=123 foo" used to work? I liked the exporting syntax.
It was the simplest way to handle special parameters. If you say
parameter=value command the given environment variable is always set to
value even if it is a special parameter or integer or anything. So now
UID=hzoli printenv UID says hzoli. In case of UID it may net be the
desired behaviour but in some other cases this makes things simpler. I
also liked the exporting syntax but I often tried to use that to a zsh
function or to a builtin which caused irreversibly lost privileges.
Offtopic but note that USERNAME is much more secure as it now executes
initgroups() as well similarily to su username (this is new, zsh-3.0.0 does
not do that).
A somewhat related question:
% ksh
$ readonly foo=foo
$ foo=bar printenv foo
ksh: foo: is read only
% zsh
% readonly foo=foo
% foo=bar printenv foo
bar
The current bash version behaves similarily but I talked to the bash
maintainer and he thinks that the ksh behaviour is the correct one and
bash-2.0 will now allow this. Similar question:
% ksh
$ typeset -i i=12
$ i=foo printenv i
0
Zsh prints foo here. That's why UID=798 command does not work.
Zoltan
next prev parent reply other threads:[~1996-10-16 23:34 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
1996-10-11 12:34 pushd Peter Stephenson
1996-10-11 13:01 ` pushd Vinnie Shelton
1996-10-11 15:13 ` pushd Peter Whaite
1996-10-11 19:53 ` pushd Bart Schaefer
1996-10-15 12:45 ` pushd Peter Stephenson
1996-10-15 17:08 ` pushd Bart Schaefer
1996-10-15 17:34 ` pushd Zoltan Hidvegi
1996-10-16 5:38 ` pushd Bart Schaefer
1996-10-16 8:42 ` pushd Zefram
1996-10-16 17:36 ` pushd Bart Schaefer
1996-10-16 18:10 ` pushd Zefram
1996-10-16 21:16 ` pushd Bart Schaefer
1996-10-17 13:22 ` pushd Anthony Heading
1996-10-17 13:47 ` pushd Peter Stephenson
1996-10-17 17:01 ` pushd Bart Schaefer
1996-10-16 22:28 ` Zoltan Hidvegi [this message]
1996-10-16 12:42 ` pushd Peter Stephenson
1996-10-15 18:45 ` pushd Anthony Heading
1996-10-18 13:14 pushd Ray Van Tassle-CRV004
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