Re: param expansion with single-character special vars in the environment

[Chet Ramey]

On 5/2/16 2:59 PM, Grisha Levit wrote:
> 
> On Mon, May 2, 2016 at 2:48 PM, Chet Ramey <chet.ramey@case.edu
> <mailto:chet.ramey@case.edu>> wrote:
> 
>     and this one throws away the nameref attribute:
> 
>     typeset -n foo ; typeset -i foo ; foo=7*6 ; typeset -p foo
> 
> 
> I think it's important to note that the nameref attribute is thrown away at
> the `typeset -i foo' step, which makes some sense since `typeset -n -i'
> does not seem to be valid in ksh.

The issue I'm thinking about currently is whether or not to allow nameref
variables to have numeric (integer) values.  bash-4.3 didn't allow those
values to be expanded, but allowed them to be assigned.  It doesn't seem
harmful to change the error to assignment time.

Chet



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