[Fedora-packaging] NewPackageProcess, comment on Patch0 vs Patch

[Michael Schwendt]

http://fedoraproject.org/wiki/NewPackageProcess

says:

> Patches should start at Patch0, don't use Patch, even if you only have one
> right now, because inevitably, you'll need another one at some point
> before the sun explodes.

What is the rationale?

Patch: foo.patch
Patch1: bar.patch
# ...
%patch -p1 -b .foo
%patch1 -p1 -b .bar

work just fine. 'Patch' == 'Patch0' is true.