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Fri, 29 Apr 2022 13:08:25 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.7.0-alpha0-591-gfe6c3a2700-fm-20220427.001-gfe6c3a27 Mime-Version: 1.0 Message-Id: <6b0e70d7-c387-449d-a039-b7ec48f4fc07@www.fastmail.com> In-Reply-To: References: Date: Fri, 29 Apr 2022 17:08:05 +0000 From: "Daniel Shahaf" To: zsh-workers@zsh.org Subject: Re: ERRNO is unset until set Content-Type: text/plain X-Seq: 50142 Archived-At: X-Loop: zsh-workers@zsh.org Errors-To: zsh-workers-owner@zsh.org Precedence: list Precedence: bulk Sender: zsh-workers-request@zsh.org X-no-archive: yes List-Id: List-Help: List-Subscribe: List-Unsubscribe: List-Post: List-Owner: List-Archive: Bart Schaefer wrote on Fri, 29 Apr 2022 17:02 +00:00: > On Fri, Apr 29, 2022 at 3:00 AM Mikael Magnusson wrote: >> >> When is this good or useful? > > I was wondering that myself. The only thing I can think of is to make > ${+ERRNO} show the "right" thing. > > Archive search is still offline (and I'm not sure it would help > anyway) so I can't find the discussion that led up my patch from > 32337, https://zsh.org/workers/32157? > but it seems to me that was intended to be just a first step to > causing some of those variables to be non-special when zsh is started > in emulation mode. The second step just never happened, or at least > not comprehensively. > > I'm no longer even sure why ERRNO was included, there's no reference > to it in the POSIX shell specification. Clash with some other shell? > But which one?