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Re: PATCH: Allow more scripts without #!

X-seq: zsh-workers 48054
From: Daniel Shahaf <d.s@xxxxxxxxxxxxxxxxxx>
To: zsh-workers@xxxxxxx
Cc: Justine Tunney <jtunney@xxxxxxxxx>
Subject: Re: PATCH: Allow more scripts without #!
Date: Mon, 15 Feb 2021 15:45:19 +0000
Archived-at: <https://zsh.org/workers/48054>
Archived-at: <http://www.zsh.org/sympa/arcsearch_id/zsh-workers/2021-02/20210215154519.GA18776%40tarpaulin.shahaf.local2>
In-reply-to: <CANtdasR_vBwBJEKKVtX1pf7-jR3HPdesA5zhcvOvQ-TYu7CLfg@mail.gmail.com>
List-id: <zsh-workers.zsh.org>
References: <CANtdasR_vBwBJEKKVtX1pf7-jR3HPdesA5zhcvOvQ-TYu7CLfg@mail.gmail.com>

Ping.  This patch hasn't been reviewed.

Justine Tunney wrote on Mon, Jan 25, 2021 at 22:35:18 -0800:
> This change updates the binary safety check so that zsh can run shell
> scripts with concatenated binary content within the first 128 bytes,
> provided a line exists beforehand with a lowercase character or shell
> expansion syntax. Note that this only impacts classic implicit shell
> scripts which don't have a shebang line.
> 
> POSIX rules were updated to loosen binary restrictions and require this
> behavior going forward. A similar change was made last year to the FreeBSD
> Almquist Shell. It's needed by projects such as the Cosmopolitan C Library,
> which creates polyglot executables that run on all operating systems.
> 
> I release this change into the public domain. See unlicense / creative
> commons cc0.

Follow-Ups:
- Re: PATCH: Allow more scripts without #!
  - From: Bart Schaefer

References:
- PATCH: Allow more scripts without #!
  - From: Justine Tunney

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