From: Bart Schaefer <schaefer@brasslantern.com>
To: zsh-users@zsh.org
Subject: Re: Running "unset path" breaks PATH despite emulation being enabled
Date: Sat, 9 Sep 2017 15:25:12 -0700 [thread overview]
Message-ID: <170909152512.ZM9176@torch.brasslantern.com> (raw)
In-Reply-To: <20170909213806.52qezvyk766loeg3@sinister.lan.codevat.com>
On Sep 9, 2:38pm, Eric Pruitt wrote:
} Subject: Re: Running "unset path" breaks PATH despite emulation being enab
}
} I would like to replace "zsh" with the absolute path of the Z shell
} interpreter in case the "zsh" being executed is not the first one listed
} in a $PATH folder. After reading through some documentation and
} reviewing the output of "set", I don't see a way to do this. For
} comparison, Bash sets $BASH to the interpreter's path:
I just had a look at the Bash sources. Chet will correct me if I'm wrong,
but as far as I can tell if argv[0] is not already at least a partial
path, then $BASH is set by doing a path search for the first matching
executable. Thus $BASH will be "the first one listed in a $PATH folder"
when argv[0] contains no "/" separators, even if the actual executable
came from somewhere else.
} Is there a similar value in Z shell or a built-in I can use?
$ZSH_ARGZERO in sufficiently recent versions of the shell will give you
the equivalent information, you just have to do the path search part
yourself, which is simple enough with the "=" expander:
[[ =$ZSH_ARGZERO != =$ZSH_NAME ]] && ...
If NO_EQUALS is set then some uses of `whence ...` might be needed.
next prev parent reply other threads:[~2017-09-09 22:23 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 [this message]
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
2017-09-10 18:51 ` Chet Ramey
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