Re: License of Emacs modes
Jérôme Marant <jerome.marant@free.fr> wrote:
> En réponse à Peter S Galbraith <psg@debian.org>:
>
> > Jérôme Marant <jerome.marant@free.fr> wrote:
> >
> > > Since Emacsen are GPL-licensed, do Emacs modes have to be shipped
> > > under a GPL-compatible license?
> >
> > Pretty much. It is possible to write stand-alone elisp code that
> > only uses Emacs internals. At that point you are okay, treating
> > Emacs has an interpreter only (so the code it interprets doesn't
> > have to be under a GPL-compatible license). But as soon as you load
> > an Emacs lisp
>
> Err, I thought the license of interpreted programs had to be
> compatible with the license of interpreters
I don't think so.
> (I recall the Python
> licensing problems, before Python 2.1). Did I misunderstand?
I don't recall what the issues were.
> > library
> > and use it, then you'll using a GPL'ed library (as opposed to an
> > LGPL'ed
> > one) and your code must be GPL-compatible (if you distribute it of
> > course).
>
> Ah, you mean that there is only a problem when an elisp code loads
> some elisp libraries ?
Right.
> > > I discovered one of them which
> > > could be problematic.
> >
> > Is it ilisp?
>
> No, erlang-mode, which is licensed under EPL.
Yeah, it loads various libraries. I haven't looked at the license to
see what makes it GPL-uncompatible.
While you're at it, ask the DD to byte-compile the files like most all
other elisp packages do! :-)
Peter
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