Re: draft for new Vim license
Richard Stallman wrote:
> > 2) A user of the modified Vim must be able to see that it was modified, at
> > least in the version information and in the intro screen.
> >
> > The GPL has a similar kind of requirement, but this is more specific,
> > hence not GPL-compatible.
>
> I could not find the similar requirement in the GPL. What would be the
> similar requirement that is GPL-compatible?
>
> In section 2:
>
> a) You must cause the modified files to carry prominent notices
> stating that you changed the files and the date of any change.
The problem with this is that a user of Vim may never look in a changed
file. I don't think the GPL requires that a message about the
modifications is printed on startup or with version information. He
would not be aware of using a modified Vim. It would be very much
desired that the ":version" command says something about this Vim being
modified.
If this clause is not GPL compatible, I would have to move it to the
four alternatives, and allow the GPL-compatible distributing not do
require this change in the version information. That makes it a bit
more complicated, but it's possible.
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