Re: Licensing question: compatibility between Vim license and GPL

On Sun, Oct 15, 2023 at 7:29 PM Lifepillar <lifepillar@lifepillar.me> wrote:
>
> Can code released under Vim license include third-party code released
> under GPLv2 or GPLv3?
>
> I have read that Vim license is "GPL-compatible", but it is not clear to
> me which way such compatibility works.
>
> Thanks for providing legal advice for free ;)
> Life

I am not a lawyer, nor do I play one on TV; but I believe that the
following (at the bottom of the ":help license" text) is relevant:

- According to Richard Stallman the Vim license is GNU GPL compatible.
A few minor changes have been made since he checked it, but that should not
make a difference.

- If you link Vim with a library that goes under the GNU GPL, this limits
further distribution to the GNU GPL. Also when you didn't actually change
anything in Vim.

- Once a change is included that goes under the GNU GPL, this forces all
further changes to also be made under the GNU GPL or a compatible license.

- If you distribute a modified version of Vim, you can include your name and
contact information with the "--with-modified-by" configure argument or the
MODIFIED_BY define.


Best regards,
Tony.

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