bug#58921: Tab completion hangs in eshell

[Jim Porter]

X-Debbugs-Cc: monnier@iro.umontreal.ca

On 10/31/2022 2:04 AM, reza via Bug reports for GNU Emacs, the Swiss 
army knife of text editors wrote:
> Open an eshell:
>
>       M-x eshell <enter>
>
> Type this command in the eshell
>
>       tab --warning=no-timestamp -xf <tab>
>
> emacs will hang and has to be killed.
>
> This behavior does not occur when only typing
>
>       tar -xf <tab>

I believe the attached patch fixes this. It ensures that even when 
'pcomplete/tar' encounters an option it doesn't recognize, it continues 
to make forward progress.

0001-Fix-Pcompletion-of-tar-when-using-unrecognized-argum.patch
Description: Text document