From: Vincent Lefevre <vincent@vinc17.net>
To: zsh-workers@zsh.org
Subject: Re: Bug with sh emulation; shouldn't KSH_TYPESET be set?
Date: Mon, 30 Jan 2012 23:20:44 +0100 [thread overview]
Message-ID: <20120130222044.GK3663@xvii.vinc17.org> (raw)
In-Reply-To: <CAMP44s0Mji0OdU7K-ftazbwD2YYJzXzm1J1yEQOeWc0f2=zjMg@mail.gmail.com>
On 2012-01-30 23:46:46 +0200, Felipe Contreras wrote:
> On Mon, Jan 30, 2012 at 10:43 PM, Frank Terbeck <ft@bewatermyfriend.org> wrote:
> > Felipe Contreras wrote:
> > [...]
> >> local t=$(echo foo --bar)
> > [...]
> >> But not in zsh, with sh emulation. Enabling KSH_TYPESET makes it work.
> >>
> >> Shouldn't it be enabled with sh emulation?
> >>
> >> BTW. What exactly is 'emulate sh' supposed to emulate? I would like to
> >> run that shell to check for compatibility issues, and apparently it's
> >> not bash.
> >
> > "emulate sh" is POSIX shell emulation (we did amend this mode in the
> > past to work as much as possible as POSIX describes). Neither typeset
> > nor local are part of POSIX (at least not SUSv3 - I don't know about
> > v4).
> >
> > So, I don't think it should be enabled.
>
> But it wouldn't hurt either, right?
Not sure. What if you have some executable named "local" in the path?
> It would be nice to have some 'bash' emulation mode, but since there
> isn't any, why not enable this harmless option?
Instead of changing options for sh emulation, why not add a 'bash'
emulation mode, even though it may not be perfect (it would be better
than sh anyway).
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <http://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
next prev parent reply other threads:[~2012-01-30 22:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-30 20:21 Felipe Contreras
2012-01-30 20:43 ` Frank Terbeck
2012-01-30 21:46 ` Felipe Contreras
2012-01-30 22:17 ` Frank Terbeck
2012-01-30 22:20 ` Vincent Lefevre [this message]
2012-01-31 9:43 ` Peter Stephenson
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