From: Stephane Chazelas <stephane.chazelas@gmail.com>
To: Zsh hackers list <zsh-workers@zsh.org>
Subject: Re: $(<nofile) doesn't set $? to non-zero
Date: Wed, 14 Mar 2018 11:04:50 +0000 [thread overview]
Message-ID: <20180314110450.GA14445@chaz.gmail.com> (raw)
In-Reply-To: <20180314103254.GA10404@chaz.gmail.com>
2018-03-14 10:32:54 +0000, Stephane Chazelas:
[...]
> Note that all shells are silent and return 0 for var=$(</etc)
> var=$(</dev/mem) or any file that can be opened but not read
> successfully, which IMO is not ideal.
[...]
In zsh, one can use $ERRNO though:
$ zsh -c 'zmodload zsh/system; ERRNO=0; var=$(</); echo $? $ERRNO; syserror'
0 21
Is a directory
$ zsh -c 'zmodload zsh/system; ERRNO=0; var=$(<file); echo $? $ERRNO; syserror'
zsh:1: no such file or directory: file
0 2
No such file or directory
(same for $mapfile[file] which is silent on errors).
--
Stephane
prev parent reply other threads:[~2018-03-14 11:04 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20180314103335epcas4p30222f0df02adda27cbddbe62075ff9ad@epcas4p3.samsung.com>
2018-03-14 10:32 ` Stephane Chazelas
2018-03-14 10:54 ` Peter Stephenson
2018-03-14 14:42 ` Stephane Chazelas
2018-03-14 14:50 ` Peter Stephenson
2018-03-15 7:12 ` Stephane Chazelas
2018-03-15 7:25 ` EILSEQ in the C locale? (Was: $(<nofile) doesn't set $? to non-zero) Stephane Chazelas
2018-03-19 0:09 ` Bart Schaefer
2018-03-15 9:23 ` $(<nofile) doesn't set $? to non-zero Peter Stephenson
2018-03-15 11:10 ` Stephane Chazelas
2018-03-16 8:24 ` Stephane Chazelas
2018-03-14 11:04 ` Stephane Chazelas [this message]
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