On Thu, 23 Feb 2017 21:16:15 +0000 Ciaran McCreesh wrote:
> On Thu, 23 Feb 2017 23:58:50 +0300
> Andrew Savchenko <bircoph@gentoo.org> wrote:
> > On Thu, 23 Feb 2017 18:50:45 +0100 Ulrich Mueller wrote:
> > > >>>>> On Thu, 23 Feb 2017, Andrew Savchenko wrote:  
> > > >> https://projects.gentoo.org/pms/6/pms.html#x1-180003.1.1
> > > >> "Category Names"  
> > >   
> > > > I don't see a requirement here, only note on most common
> > > > pattern:  
> > >   
> > > > ``Note: A hyphen is not required because of the virtual category.
> > > > Usually, however, category names will contain a hyphen.''  
> > > 
> > > It is a note on what is the exclusive pattern, with the single
> > > exception of the virtual category. I believe that we shouldn't break
> > > that pattern.  
> > 
> > I'm fine with this approach, but could PMS be updated to contain
> > more clear statement to avoid misunderstanding? E.g.:
> > ``all category names must contain a single hyphen with a
> > special exception for "virtual"''
> 
> It's not a "must". Also, putting that rule in and having the package
> mangler enforce it can have unintended consequences: for example,
> there used to be the mild nuisance of dealing with overlays which
> didn't contain a categories list, and which did contain directories
> named CVS all over the place.
 
OK, let's say "should", or ever better explain details, e.g.:

  All newly created categories should follow "group-qualificator"
pattern, a name without hyphen is allowed for a "virtual" category
and for compatibility reasons in overlays.

Best regards,
Andrew Savchenko