Re: . and .. are included where they were excluded before

[pepa65]

On 27/01/2021 04.00, kfm@plushkava.net wrote:
> One example is that gregrwm claims the following outcome for 5.0.17(1)
> in Ubuntu 20.04:-
> 
>   $   echo @(?|.?)      #. and .. are included
> . .. a .b

$ cat /etc/issue
Ubuntu 20.04.1 LTS \n \l

$ bash --version
GNU bash, version 5.0.17(1)-release (x86_64-pc-linux-gnu)
[...]

$ shopt -s extglob
$ echo @(?|.?)
@(?|.?)

(I don't know, is there something wrong with my bash? Do I have to set
other options??)

Peter