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From: Greg Wooledge <wooledg@eeg.ccf.org>
Newsgroups: gnu.bash.bug
Subject: Re: Incorrect / Inconsistent behavior with nameref assignments in functions
Date: Fri, 28 Aug 2020 12:14:42 -0400
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On Fri, Aug 28, 2020 at 06:37:00PM +0300, Oğuz wrote:
> 28 Ağustos 2020 Cuma tarihinde Greg Wooledge <wooledg@eeg.ccf.org> yazdı:
> > func1() {
> >   declare -n _func1_ref="$1"
> >   local _func1_i
> >   ...
> > }
> >
> This doesn't make the slightest sense. What is the point of having local
> variables then?

You need to distinguish between two types of functions: ones which
use namerefs, and ones which do not.

If a function doesn't use name references, then you may safely use
local variables with any names you like.  Nothing has to change.

If a function is going to use a name reference, then you need to
bullet-proof it from head to toe.  All local variables have to be
mangled to minimize the chance of collisions.  It's an entirely
different problem.