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Re: sh emulation POSIX non-conformances (some of zsh's special variables)

X-seq: zsh-workers 48502
From: Stephane Chazelas <stephane@xxxxxxxxxxxx>
To: Zsh hackers list <zsh-workers@xxxxxxx>
Subject: Re: sh emulation POSIX non-conformances (some of zsh's special variables)
Date: Sun, 11 Apr 2021 20:33:47 +0100
Archived-at: <https://zsh.org/workers/48502>
In-reply-to: <20210411175726.hxnm33mxoska2tsm@chazelas.org>
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References: <7FD930F4-37CD-402B-9A06-893818856199@dana.is> <CAH+w=7aAZKpT0f5LT7RaoCehyO6UZe6FimzuQqOP4o=+EwZs2w@mail.gmail.com> <F56FD538-0428-4D03-BBE2-6E53154EC0EA@dana.is> <CAH+w=7a6sjNJsDv4KJyW-o45+Q7GNEp7_TL4LGd-os1ozF8T9A@mail.gmail.com> <20210411175726.hxnm33mxoska2tsm@chazelas.org>

2021-04-11 18:57:26 +0100, Stephane Chazelas:
> Some non-POSIX conformances I can think of ATM:
[...]

$ zsh --emulate sh -c 'EUID=10; echo "$EUID"'
zsh:1: failed to change effective user ID: operation not permitted

But then again, many shells have similar problems with their own
special variables.

-- 
Stephane

References:
- [PATCH] Document imperfections in POSIX/sh compatibility
  - From: dana
- Re: [PATCH] Document imperfections in POSIX/sh compatibility
  - From: Bart Schaefer
- Re: [PATCH] Document imperfections in POSIX/sh compatibility
  - From: dana
- Re: [PATCH] Document imperfections in POSIX/sh compatibility
  - From: Bart Schaefer
- sh emulation POSIX non-conformances (Was: [PATCH] Document imperfections in POSIX/sh compatibility)
  - From: Stephane Chazelas

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