Re: [PATCH 13/18] conf: Rework stepping through chunks of port specifiers

[Stefano Brivio <sbrivio@redhat.com>]

On Thu, 9 Apr 2026 10:13:26 +1000
David Gibson <david@gibson.dropbear.id.au> wrote:

> On Wed, Apr 08, 2026 at 11:40:22PM +0200, Stefano Brivio wrote:
> > On Tue,  7 Apr 2026 13:16:25 +1000
> > David Gibson <david@gibson.dropbear.id.au> wrote:
> >   
> > > Port specifier strings are made up of ',' separated chunks.  Rework the
> > > logic we use to step through the chunks.
> > > 
> > > Specifically, maintain a pointer to the end of each chunk as well as the
> > > start.  This is not really used yet, but will be useful in future.
> > > 
> > > This also has side effect on semantics.  Previously an empty specifier (0
> > > chunks) was not accepted.  Now it is, and will be treated as an "exclude
> > > only" spec which excludes only ephemeral ports.  
> > 
> > Not really, because getopt_long() wants an argument for those options
> > anyway.  
> 
> This allows an *empty* specifier, not a missing one.  i.e.
> 	$ pasta -t '' -u ''
> 
> That's a kind of weird thing to do, but it does work after this patch.

Ah, oops, right, of course.

-- 
Stefano