From: Martijn Dekker <martijn@inlv.org>
To: dash@vger.kernel.org
Subject: Re: dash unset idiosyncrasies
Date: Mon, 06 Jul 2015 05:23:16 +0200 [thread overview]
Message-ID: <5599F4A4.2040403@inlv.org> (raw)
In-Reply-To: <CAPxz1+Zuye=Oj=tWvto9_ir5XcgazBY=2asesR77qRrFuTbc2A@mail.gmail.com>
Parke schreef op 06-07-15 om 04:18:
> The man page does not say what happens if the given name corresponds
> only to a function.
Neither does POSIX, as you've found out: "[...] if a variable by that
name does not exist, it is unspecified whether a function by that name,
if any, shall be unset." I agree the dash man page could do with
clarifying this.
I've found it best, to avoid bugs and confusion, to always use 'unset'
with either the -v or the -f option (but not both). This should work
consistently on all POSIXly shells.
FYI, other shells produce similar output for your test script (except
AT&T ksh halts execution on 'unset' without parameters.) There seem to
be no shells that support unsetting both variables and functions with a
single 'unset' command.
- Martijn
next prev parent reply other threads:[~2015-07-06 3:23 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-06 2:18 dash unset idiosyncrasies Parke
2015-07-06 3:23 ` Martijn Dekker [this message]
2015-07-06 16:02 ` Parke
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