From: Roman Perepelitsa <roman.perepelitsa@gmail.com>
To: Sebastian Gniazdowski <sgniazdowski@gmail.com>
Cc: Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: $+var and (P) flag
Date: Mon, 27 May 2019 21:52:21 +0200 [thread overview]
Message-ID: <CAN=4vMp3mgYE766yDKq4G=n0wj0zKdZ-5iV3_W0NuRo2CC-_sA@mail.gmail.com> (raw)
In-Reply-To: <CAKc7PVDp3rKdjrzXeHxiqC15TBSfbgG-rc-t6_p1=3FPyf28Wg@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 599 bytes --]
You can try [[ -v ${varname:1} ]] and (( $+parameters[${varname:1}] )).
${varname:1} removes the leading plus. If you can change your code so that
the plus isn't added, it gets simpler.
Roman.
On Mon, May 27, 2019 at 9:46 PM Sebastian Gniazdowski <
sgniazdowski@gmail.com> wrote:
> Hello,
> simple test:
>
> a=1
> varname='+a'
> echo ${(P)varname}
>
> yields empty output. Is there any way to use the $+var syntax with (P)
> flag?
>
> --
> Sebastian Gniazdowski
> News: https://twitter.com/ZdharmaI
> IRC: https://kiwiirc.com/client/chat.freenode.net:+6697/#zplugin
> Blog: http://zdharma.org
>
next prev parent reply other threads:[~2019-05-27 19:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-27 19:45 Sebastian Gniazdowski
2019-05-27 19:52 ` Roman Perepelitsa [this message]
2019-05-31 11:00 ` Sebastian Gniazdowski
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAN=4vMp3mgYE766yDKq4G=n0wj0zKdZ-5iV3_W0NuRo2CC-_sA@mail.gmail.com' \
--to=roman.perepelitsa@gmail.com \
--cc=sgniazdowski@gmail.com \
--cc=zsh-workers@zsh.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/zsh/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).