Re: functions can fully unset local vars in other scopes

[Chet Ramey]

On 7/30/22 8:05 AM, Kerin Millar wrote:

> > What consideration was given to creating “local --unset *VAR*” or “unset
> > --local *VAR*” or some other equivalent that doesn't overload any existing
> > command form?
>
> Obviously, only Chet can meaningfully respond to this. I mentioned the 
> existence of the option because it appeared likely that Emanuele was unaware of 
> it, not to attempt to obviate any of his suggestions, nor endorse the status 
> quo.

Sometimes it's useful to read the discussion that prompted the change.

https://lists.gnu.org/archive/html/bug-bash/2018-02/msg00065.html

In this case, the primary requirement was to enable scripts that wanted a
wholesale behavior change, while not breaking backwards compatibility by
making that option the default. Enabling these semantics on a per-variable
basis wasn't part of the discussion (kre was, however, very vocal about
making localvar_unset the default).

--
``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/