Re: local -r issue in conjunction with trap

[Chet Ramey]

On 7/17/22 6:48 PM, Koichi Murase wrote:
> 2022年7月18日(月) 6:40 Chet Ramey <chet.ramey@case.edu>:
> > On 7/15/22 7:06 PM, Koichi Murase wrote:
> > > We can shadow local readonly variables. What we cannot are global
> > > readonly variables.
> > >
> > > It seems to me a bug.
> >
> > It's not a bug. Bash-2.04 introduced behavior to disallow local variables
> > with the same name as readonly variables in a previous scope (whether a
> > local scope or not). I got requests to relax it, and the result is the
> > current behavior of restricting it to shadowing readonly variables at the
> > global scope.
>
> Thank you for your explanation, but "it" (i.e., what seemed a bug to
> me) is not the above behavior (allowing to shadow local readonly
> variables), 

That was certainly not clear from the text you quoted.

> 1) "set -e" is set.
> 2) The code is executed from a script file.
> 3) Shadowing of local readonly variables is attempted in a trap handler.

I'll take a look at this case.


--
``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/