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Re: Pattern bug on (a|)~^(b)

X-seq: zsh-workers 51991
From: Johan Grande <nahoj@xxxxxxxxx>
To: Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>
Cc: zsh-workers@xxxxxxx
Subject: Re: Pattern bug on (a*|)~^(*b)
Date: Tue, 25 Jul 2023 20:47:38 +0200
Archived-at: <https://zsh.org/workers/51991>
In-reply-to: <CAH+w=7a1CFu9G5Tc3HT=hizPBuaKLbZwg_hRPNTb1G6vWs-2VA@mail.gmail.com>
List-id: <zsh-workers.zsh.org>
References: <599e3c13-53a5-1823-6d0d-68dd722967d9@crans.org> <CAH+w=7a1CFu9G5Tc3HT=hizPBuaKLbZwg_hRPNTb1G6vWs-2VA@mail.gmail.com>

Le 25/07/2023 à 20:35, Bart Schaefer a écrit :

On Tue, Jul 25, 2023 at 6:19 AM Johan Grande <nahoj@xxxxxxxxx> wrote:


In zsh 5.8.1 (x86_64-ubuntu-linux-gnu) with extended_glob,

[[ "ab" = (|a*)~^(*b) ]]

incorrectly (unless I'm mistaken) returns 1.


This is not precisely a bug, it's expected behavior.  Alternation with
(x|y) tries the patterns in left-to-right order and has lower
precedence than p~q (despite the parens).

I don't get it. What are the different patterns tried during thisleft-to-right evaluation of (|a*)~^(*b) ?


--
Johan

Follow-Ups:
- Re: Pattern bug on (a*|)~^(*b)
  - From: Bart Schaefer

References:
- Pattern bug on (a*|)~^(*b)
  - From: Johan Grande
- Re: Pattern bug on (a*|)~^(*b)
  - From: Bart Schaefer

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Re: Pattern bug on (a*|)~^(*b)

Re: Pattern bug on (a|)~^(b)