Path: csiph.com!goblin1!goblin.stu.neva.ru!usenet.stanford.edu!not-for-mail
From: Grisha Levit <grishalevit@gmail.com>
Newsgroups: gnu.bash.bug
Subject: assignment to a nameref that resolves to the temporary environment
Date: Sun, 9 Dec 2018 01:28:22 -0500
Lines: 12
Approved: bug-bash@gnu.org
Message-ID: <mailman.5421.1544336916.1284.bug-bash@gnu.org>
NNTP-Posting-Host: lists.gnu.org
Mime-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
To: bug-bash <bug-bash@gnu.org>
Envelope-to: bug-bash@gnu.org
Precedence: list
Xref: csiph.com gnu.bash.bug:14899

When a nameref local to a higher function scope points to a variable in the
temporary environment, that nameref (correctly, it seems) expands to the
value
of the target variable from the temporary environment. However, assignment
to
the nameref modifies the variable from the higher scope, bypassing the
tempenv:

    $ a() { local -n ref=var; var=tmp b; echo $ref; }
    $ b() { ref=$ref; }
    $ var=foo; a
    tmp