From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Blake <eblake@redhat.com>
Subject: Re: evaluation of env variables in DASH
Date: Wed, 19 Oct 2011 15:42:51 -0600
Message-ID: <4E9F445B.2090609@redhat.com>
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To: Dima Sorkin <dima@minignu.minidns.net>
Cc: dash@vger.kernel.org, herbert@gondor.hengli.com.au

On 10/19/2011 03:24 PM, Dima Sorkin wrote:
> Hi.
>    The following DASH behaviour seems buggy to me

The only bug here is your expectations.

>
> -----------------
> $ export A='\n'
> $ echo $A
>

Passing a literal backslash to echo is non-portable.  POSIX even says 
so.  And bash can match dash behavior:

$ (shopt -s xpg_echo; A='\n'; echo -$A-)
-