From mboxrd@z Thu Jan  1 00:00:00 1970
From: Oleg Bulatov <oleg@bulatov.me>
Subject: Re: heredoc and subshell
Date: Wed, 24 Feb 2016 23:27:39 +0300
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To: Joerg Schilling <joerg.schilling@fokus.fraunhofer.de>, "eblake@redhat.com" <eblake@redhat.com>, "dash@vger.kernel.org" <dash@vger.kernel.org>, "austin-group-l@opengroup.org" <austin-group-l@opengroup.org>

24.02.2016, 13:58, "Joerg Schilling" <Joerg.Schilling@fokus.fraunhofer.de>:
> BTW: If I replace $(..) by `..` and feed the code to the original SVr4 Bourne
> Shell, I get the same output as you got from bash. I would guess that the bash
> output you added above is correct.

The behavior of `..` with heredoc has also interesting corner cases:

$ cat x.sh 
cat <<END ; echo `echo a
echo b`
hello
END
$ dash x.sh 
echo ba
x.sh: 3: x.sh: hello: not found
x.sh: 4: x.sh: END: not found
$ bash x.sh
hello
a b
$

On the one hand it reads heredoc, on the other hand it processes closing of the subshell.

-- 
Oleg