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Re: [bug] :P modifier and symlink loops

X-seq: zsh-workers 53655
From: Oliver Kiddle <opk@xxxxxxx>
To: "Daniel Shahaf" <d.s@xxxxxxxxxxxxxxxxxx>
Cc: zsh-workers@xxxxxxx
Subject: Re: [bug] :P modifier and symlink loops
Date: Wed, 21 May 2025 18:07:47 +0200
Archived-at: <https://zsh.org/workers/53655>
In-reply-to: <1c129b0d-7ce4-4c3b-b18f-9c1b9850fbf7@app.fastmail.com>
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References: <20200111170047.ifjsdd5lfeksqyaa@chaz.gmail.com> <20200201175740.lma5dxgwufk6fpeg@chazelas.org> <20200202081021.7c8aab22@tarpaulin.shahaf.local2> <20200321195048.7c49a291@tarpaulin.shahaf.local2> <CAHYJk3Q+d+xsL23kXvzOqztA0bfg0HNvwn4y2EwmFH+aYX_=QQ@mail.gmail.com> <CAHYJk3SAhHqQ8XkZ3wKd8Cm0FrxFXHTfjYKXTGH_mtUpkzNcCg@mail.gmail.com> <CAH+w=7ZuhL6cESNnM9uSoE_eEu-KrN=Eqc1xqjASUDE=JzaqbQ@mail.gmail.com> <1c129b0d-7ce4-4c3b-b18f-9c1b9850fbf7@app.fastmail.com>

On 13 May, "Daniel Shahaf" wrote:
> boilerplate to make sure we have memccpy() [sic].  (I wasn't sure if
> that function could be assumed to be available, so I went ahead and
> added a configure check and a fallback codepath.)

I think we can be fairly confident of relying on the existence of
memccpy(). Searching online for man pages, indicates that it exists on
all three BSDs plus AIX, HP/UX and Solaris. The man pages also indicate
that it was present in System V and 4.3BSD.

It would probably be good if we could strip out more of these
alternative fallback implementations.

Oliver

Follow-Ups:
- Re: [bug] :P modifier and symlink loops
  - From: Daniel Shahaf

References:
- Re: [bug] :P modifier and symlink loops
  - From: Mikael Magnusson
- Re: [bug] :P modifier and symlink loops
  - From: Mikael Magnusson
- Re: [bug] :P modifier and symlink loops
  - From: Bart Schaefer
- Re: [bug] :P modifier and symlink loops
  - From: Daniel Shahaf

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