bug#35209: Bug in zdiff argument of an option separated by a space is not handled correctly

[Paul Eggert]

On 4/9/19 07:11, Bram Mertens wrote:

> The zdiff script does not handle options with arguments separated by a
> space correctly.

Thanks for reporting that. Lv Ying eventually followed up here:

https://bugs.gnu.org/54291

and as mentioned there, a patch has been installed and should be in the 
next gzip release.