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From: Oliver Kiddle <opk@zsh.org>
To: Bart Schaefer <schaefer@brasslantern.com>
Cc: Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: Up-scope named references, vs. ksh
Date: Tue, 05 Mar 2024 02:05:03 +0100	[thread overview]
Message-ID: <90920-1709600703.280388@Hl_Q.k_r5.OUBX> (raw)
In-Reply-To: <CAH+w=7ZZrCh23Q3kzJ3K-TtS1ULnWyR-Cpj_ymSvEgejpvtDgw@mail.gmail.com>

Bart Schaefer wrote:
> The word "scalar" is just as important in that sentence as the word
> "global" -- "read" and "zstat" can specify whether the variable is
> scalar or array, you can't do that with a nameref.  Furthermore, if

Isn't defaulting to a scalar type fairly normal. For the read use case,
it works for some basic tests when you start the function with:

  [[ -v $1 ]] || typeset -g $1
  typeset -un ref=$1

A different problem I'm finding is with not being able to hide the
reference type of a variable in a called function:

  inner() {
    local var=hello
    typeset -p var
  }
  outer() {
    typeset -n var=value
    inner
  }
  outer

This outputs

  typeset -g -n var=value

The value "hello" is lost but a subsequent assignment within inner()
applies to the reference.

I would expect the `local var` in inner to hide any variable including
references with the same name from an outer scope.

(I'm currently testing with the typeset -nu and Fix crash on
unset-through-nameref patches applied).

Oliver


  parent reply	other threads:[~2024-03-05  1:05 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-06  2:21 [PATCH 1/3]: Add named references Bart Schaefer
2023-02-08  3:45 ` Oliver Kiddle
2023-02-08  4:59   ` Bart Schaefer
2023-02-08 23:16     ` Bart Schaefer
2023-02-09  0:47     ` Oliver Kiddle
2023-02-09  2:01       ` Oliver Kiddle
2023-02-09  5:45         ` Bart Schaefer
2023-02-09  4:49       ` Bart Schaefer
2023-02-09 20:49         ` Oliver Kiddle
2023-02-09 23:07           ` Bart Schaefer
2023-02-11  3:04             ` Bart Schaefer
2023-02-11  3:55               ` Bart Schaefer
2023-02-11  5:36                 ` Speaking of dangerous referents Bart Schaefer
2023-02-12  8:00                   ` Oliver Kiddle
2023-02-12  8:34                     ` Bart Schaefer
2023-02-11  7:02               ` [PATCH 1/3]: Add named references Oliver Kiddle
2023-02-11  7:45                 ` Bart Schaefer
2023-02-11 23:43                   ` Bart Schaefer
2023-02-11 23:45                     ` Bart Schaefer
2023-02-12  7:38                     ` Oliver Kiddle
2024-02-11  7:00                   ` Stephane Chazelas
2024-02-11 16:14                     ` Bart Schaefer
2024-02-11 16:42                       ` Bart Schaefer
2024-02-18  3:26                       ` Up-scope named references, vs. ksh Bart Schaefer
2024-02-20 21:05                         ` Stephane Chazelas
2024-02-20 22:30                           ` Bart Schaefer
2024-02-21 20:12                             ` Stephane Chazelas
2024-02-29  5:16                               ` Bart Schaefer
2024-03-01 18:22                                 ` Stephane Chazelas
2024-03-01 20:34                                   ` Bart Schaefer
2024-03-02  7:29                                     ` Bart Schaefer
2024-03-02 23:55                                       ` [PATCH] "typeset -nu" (was Re: Up-scope named references, vs. ksh) Bart Schaefer
2024-03-01 23:28                                   ` Up-scope named references, vs. ksh Bart Schaefer
2024-03-03 13:44                                     ` Stephane Chazelas
2024-03-03 19:04                                       ` Bart Schaefer
2024-03-03 20:27                                         ` Stephane Chazelas
2024-03-03 22:58                                           ` Bart Schaefer
2024-03-04 19:59                                             ` Stephane Chazelas
2024-03-05  1:05                                             ` Oliver Kiddle [this message]
2024-03-05  2:53                                               ` Bart Schaefer
2024-03-05  5:43                                                 ` Mikael Magnusson
2024-03-05  6:30                                                   ` Stephane Chazelas
2024-03-06  5:04                                                     ` [PATCH] local vs. nameref scoping (was Re: Up-scope named references, vs. ksh) Bart Schaefer
2023-02-12  9:02             ` [PATCH 1/3]: Add named references Oliver Kiddle
2023-02-12 18:59               ` Bart Schaefer
2023-02-12 19:45                 ` PM_* flags in zsh.h (was Re: [PATCH 1/3]: Add named references) Bart Schaefer
2023-02-12 21:01                   ` Oliver Kiddle
2023-02-12 22:54                 ` [PATCH 1/3]: Add named references Oliver Kiddle

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