From: Martijn Dekker <martijn@inlv.org>
To: Bart Schaefer <schaefer@brasslantern.com>,
Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: exported unset variables [was: 'export -p' lacks POSIX output]
Date: Sat, 29 Oct 2016 09:11:32 +0100 [thread overview]
Message-ID: <6db9e2a5-8f0b-71a2-95e6-8a8bbf4a281e@inlv.org> (raw)
In-Reply-To: <161028171859.ZM2366@torch.brasslantern.com>
Op 29-10-16 om 01:18 schreef Bart Schaefer:
[...]
> All my patch did was cause "export -p" to output the state of the
> environment variable instead of the state of the shell variable.
Understood.
> See if the patch below will help.
Seems like it's about halfway there:
$ PS1='%% ' Src/zsh -f -o posixbuiltins
% export var; echo ${var+set} ${var-unset}; typeset -p var
unset
export var
% var=; echo ${var+set} ${var-unset}; typeset -p var
set
typeset var=''
The variable name loses its export attribute upon assignment; it should
retain it.
> } (Also, is it correct/expected behaviour that zsh doesn't parse comments
> } on the interactive command line? Blindly copying/pasting the above won't
> } work for that reason.)
>
> Yes, the option INTERACTIVE_COMMENTS has to be set to recognize comments
> at the command line. Should this be on in POSIX mode?
I think so. All the other shells recognise comments in interactive mode
by default. The spec for comments at
http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_03
(#9) does not distinguish between interactive and non-interactive shells.
Thanks,
- M.
next prev parent reply other threads:[~2016-10-29 8:11 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-22 3:02 'export -p' lacks POSIX output Martijn Dekker
2016-10-22 18:24 ` Bart Schaefer
2016-10-23 12:00 ` Martijn Dekker
2016-10-23 16:47 ` Bart Schaefer
2016-10-24 8:33 ` Peter Stephenson
2016-10-28 21:00 ` exported unset variables [was: 'export -p' lacks POSIX output] Martijn Dekker
2016-10-28 21:31 ` Bart Schaefer
2016-10-28 21:48 ` Martijn Dekker
2016-10-29 0:18 ` Bart Schaefer
2016-10-29 8:11 ` Martijn Dekker [this message]
2016-10-29 18:09 ` Bart Schaefer
2016-10-29 18:43 ` Peter Stephenson
2016-10-29 19:05 ` Bart Schaefer
2016-10-29 20:20 ` interactive comments [was: exported unset variables] Martijn Dekker
2016-10-30 1:25 ` Bart Schaefer
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