bug#24958: Please make "omitting directory" message clearer

[Samuel Thibault]

Paul Eggert, on Wed 16 Nov 2016 17:25:18 -0800, wrote:
> On 11/16/2016 05:07 PM, Pádraig Brady wrote:
> >we copy the directory but not the contents.
> >I'll adjust to:
> >
> >   "not recursing; omitting directory '/foo/bar'"
> >
> How about using the traditional wording, e.g., Solaris?
> 
> $ cp /etc /tmp
> cp: /etc: is a directory
> 
> That's pretty clear.

That'd still make my students speechless: "yes, it's a directory, so
what?!"

> AIX is more verbose and is even clearer:
> 
> $ cp /etc /tmp
> cp: 0653-436  /etc is a directory.
>         Specify -r or -R to copy.

That looks more along what I suggested in my latest previous mail :)

Samuel