On 10/21/18 2:09 AM, Paul Eggert wrote:
> I have the opposite impression. Any scripts using this confusing -a operator are 
> already broken, and we should phase it out. Not that anybody actually *uses* 
> coreutils "test -a".

Done with the attached 1st patch.

The 2nd patch is a cleanup avoiding the redundant checking of unary operators
in test_unop and unary_operator.

The 3rd patch adds support for 'test -N FILE' as in bash.
Please check (on various platforms / file systems if possible).

Thanks & have a nice day,
Berny