From: Eric Pruitt <eric.pruitt@gmail.com>
To: zsh-users@zsh.org
Subject: Re: Running "unset path" breaks PATH despite emulation being enabled
Date: Sun, 10 Sep 2017 21:39:42 -0700 [thread overview]
Message-ID: <20170911043942.sbuu54iljgm4rfaq@sinister.lan.codevat.com> (raw)
In-Reply-To: <170910165057.ZM4703@torch.brasslantern.com>
On Sun, Sep 10, 2017 at 04:50:57PM -0700, Bart Schaefer wrote:
> On Sep 9, 3:38pm, Eric Pruitt wrote:
> > What want is for Z shell to return is the name to the invoked
> > interpreter which is what $BASH shows even when $PATH doesn't contain
> > Bash.
>
> OK, that's just a little bit trickier. Here's script equivalent of the
> actual heuristic Bash uses:
>
> # Set $ZSH the way Bash sets $BASH
> [...]
>
> This only works if it's executed before any chdir has been done.
>
> For older zsh that don't have the :P modifier, use :A.
Thanks for taking the time to write out that logic. I use Bash almost
exclusively, and it's been interesting seeing how things are done in Z
shell. In the end I settled for this since the script only needs to
support Linux:
test "${ZSH_NAME:-sh}" = "sh" || exec -a sh /proc/self/exe "$0" "$@"
Of the four shells I'm supporting for the script in question, Z shell is
the only that deviates from POSIX so much that that it requires special
consideration, and I didn't want to add more than a line or two of logic
for it.
Eric
next prev parent reply other threads:[~2017-09-11 4:39 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20170908082917.v5j4vczoq75vs5lk@sinister.lan.codevat.com>
[not found] ` <CAHYJk3RD6p7PwRaZSUbJSAE0Bi6_2+NKLC3MV+32Lh+PmzsAdA@mail.gmail.com>
2017-09-09 21:38 ` Eric Pruitt
2017-09-09 22:25 ` Bart Schaefer
2017-09-09 22:38 ` Eric Pruitt
2017-09-10 9:42 ` Daniel Shahaf
2017-09-10 23:50 ` Bart Schaefer
2017-09-11 4:39 ` Eric Pruitt [this message]
2017-09-10 18:51 ` Chet Ramey
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