From: Martijn Dekker <martijn@inlv.org>
To: Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: [PATCH] make 'set +o' useful and POSIX compatible
Date: Sat, 27 Feb 2016 14:47:55 +0100 [thread overview]
Message-ID: <56D1A90B.9050006@inlv.org> (raw)
In-Reply-To: <56D113E0.4090609@inlv.org>
Martijn Dekker schreef op 27-02-16 om 04:11:
> That means it should be possible to do
>
> save_options=$(set +o)
>
> then change some options, then later restore the shell options with
>
> eval "$save_options"
Hmm. There is still a problem with this.
Two options are turned off in subshells, so the command substitution
subshell $(set +o) will not store the output you want.
$ set +o >1
$ (set +o) >2
$ diff 1 2
116c116
< set -o monitor
---
> set +o monitor
177c177
< set -o zle
---
> set +o zle
This only seems to be relevant on interactive shells though, as
'monitor' and 'zle' are turned off in scripts.
- M.
next prev parent reply other threads:[~2016-02-27 13:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-27 3:11 Martijn Dekker
2016-02-27 13:47 ` Martijn Dekker [this message]
2016-02-28 5:27 ` Bart Schaefer
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