Bug#956723: lintian: add check for invalid UTF8 filenames in source

[Ivo De Decker <ivodd@debian.org>]

Hi Felix,

On Tue, Apr 14, 2020 at 10:17:24AM -0700, Felix Lechner wrote:
> On Tue, Apr 14, 2020 at 10:12 AM Ivo De Decker <ivodd@debian.org> wrote:
> >
> > This was inspired by bug #956233
> 
> The solution for that bug will address this one, as well.

Great!

> The
> supysonic case is already mentioned there (perhaps that's what you
> meant by inspiration):
> 
>     https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=956233#17

Yes. Due to the supysonic case I noticed that lintian only checks the encoding
for filenames in binary packages. I assumed that those packages would be
rejected by the archive, but clearly that's not the case.

Having a tag for invalid filenames in source packages will makes it easier to
see the extend of the problem.

Thanks,

Ivo