Re: Overview of copyright issues

[Joseph Wakeling]

Hans Aberg wrote:
> The point is that if you want to be up-to-date with latest GPL in both
> new restrictions and permissions, the only way to do it is to refer to
> the latest version when the source is published. "Or later" will admit
> later restrictions, "or latest" will impose them quietly on old sources.

No, it won't, because if a piece of code has been released under
particular license conditions (say, GPLv2) you can't revoke that.  You
can't rewrite the license for old sources -- you can only upgrade the
license for new releases.  And for that, 'or later' is a much better
formulation than 'or latest', because it also allows you to choose NOT
to upgrade if that is your desire or interest.