standards/181240: /bin/sh choking on a certain construct

Jens Schweikhardt schweikh at
Mon Aug 12 21:10:03 UTC 2013

The following reply was made to PR standards/181240; it has been noted by GNATS.

From: Jens Schweikhardt <schweikh at>
To: Tamas TEVESZ <ice at>
Cc: freebsd-gnats-submit at
Subject: Re: standards/181240: /bin/sh choking on a certain construct
Date: Mon, 12 Aug 2013 23:06:43 +0200

 On Mon, Aug 12, 2013 at 01:54:02PM +0000, Tamas TEVESZ wrote:
 # >How-To-Repeat:
 # /bin/sh -c 'echo foo || >&2 | cat'
 # (Or, if you have misc/mc installed, hit ^[3 on a .diff/.patch/.so etc. file for which mc calls /usr/local/libexec/mc/ext.d/
 A simpler invocation is
     $ >x | cat
     Syntax error: "|" unexpected
 If I read the SUS shell grammar correctly, a lone redirection cannot be
 a simple command in a pipe, so this is an extension that the other
 shells accept. I'm not sure if this is a particular useful extension.
 Jens Schweikhardt
 SIGSIG -- signature too long (core dumped)

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