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Re: Incorrect / Inconsistent behavior with nameref assignments in functi

From: Chet Ramey
Subject: Re: Incorrect / Inconsistent behavior with nameref assignments in functions
Date: Mon, 31 Aug 2020 11:23:57 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.11.0

On 8/28/20 11:28 AM, Greg Wooledge wrote:

> You've got a local variable with the same name as the global variable
> that you're attempting to pass by reference.  This will not work.
> Namerefs (declare -n) in bash are *not* like uplevel commands in Tcl.
> They cause the referenced variable name to be evaluated just like any
> other variable would be, starting at the current function scope, then
> going up to the caller, and so on.

Namerefs don't change bash's dynamic variable scoping. The two conflict
and make namerefs less useful than they might be.

``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/

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