From: Bart Schaefer <schaefer@brasslantern.com>
To: Zsh hackers list <zsh-workers@zsh.org>
Subject: The emulation rabbit-hole RE typeset/unset
Date: Fri, 27 Nov 2020 16:36:55 -0800 [thread overview]
Message-ID: <CAH+w=7aQ_pNqHtgEqV6s02Z+V6Aih2g8hebMbjxHgdYJVKXYFQ@mail.gmail.com> (raw)
In-Reply-To: <CAMP44s1Vb7BLHMaJTVwA=y1X3+UuocA3PGCuGVJRDMHAaG7zwg@mail.gmail.com>
On Fri, Nov 27, 2020 at 4:00 PM Felipe Contreras
<felipe.contreras@gmail.com> wrote:
>
> This is a bit tautological, because if the variable is unset, it can't
> be anything else but a string: param_is_unset(p) ->
> param_type_is_string(p).
This is manifestly not true in ksh and bash, because:
[[ ${foo-nil} = nil ]] implies foo is unset
{ typeset -i foo } declares foo is an integer, not a string
function ff { typeset -i foo; echo ${foo-nil}; } outputs nil
Do we care whether zsh emulates this?
next prev parent reply other threads:[~2020-11-28 0:37 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-25 7:02 More rabbit-holes with unset variables Bart Schaefer
2020-11-25 13:19 ` Stephane Chazelas
2020-11-25 22:17 ` Felipe Contreras
2020-11-26 6:10 ` Stephane Chazelas
2020-11-26 7:20 ` Felipe Contreras
2020-11-26 11:21 ` Oliver Kiddle
2020-11-26 11:29 ` Roman Perepelitsa
2020-11-26 19:08 ` Felipe Contreras
2020-11-26 19:29 ` Felipe Contreras
2020-11-26 21:13 ` Bart Schaefer
2020-11-26 21:31 ` Felipe Contreras
2020-11-26 23:29 ` Bart Schaefer
2020-11-26 23:32 ` Bart Schaefer
2020-11-26 23:53 ` Felipe Contreras
2020-11-27 0:23 ` Bart Schaefer
2020-11-27 1:51 ` Felipe Contreras
2020-11-27 20:01 ` Bart Schaefer
2020-11-27 21:49 ` Felipe Contreras
2020-11-27 22:06 ` Bart Schaefer
2020-11-27 23:35 ` Felipe Contreras
2020-11-26 22:07 ` Bart Schaefer
2020-11-26 20:41 ` Bart Schaefer
2020-11-26 20:49 ` Stephane Chazelas
2020-11-26 21:20 ` Felipe Contreras
2020-11-26 22:41 ` Bart Schaefer
2020-11-26 23:45 ` Felipe Contreras
2020-11-27 0:09 ` Bart Schaefer
2020-11-27 0:30 ` Felipe Contreras
2020-11-27 0:51 ` Bart Schaefer
2020-11-27 1:30 ` Felipe Contreras
2020-11-27 20:54 ` Bart Schaefer
2020-11-27 22:10 ` Felipe Contreras
2020-11-27 22:39 ` Bart Schaefer
2020-11-28 0:00 ` Felipe Contreras
2020-11-28 0:04 ` Bart Schaefer
2020-11-28 10:52 ` Felipe Contreras
2020-11-28 0:36 ` Bart Schaefer [this message]
2020-11-28 11:35 ` The emulation rabbit-hole RE typeset/unset Felipe Contreras
2020-11-28 16:56 ` Bart Schaefer
2020-12-01 8:49 ` Felipe Contreras
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