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Re: guile and emacs and elisp, oh my!
From: |
Ken Raeburn |
Subject: |
Re: guile and emacs and elisp, oh my! |
Date: |
Thu, 15 Apr 2010 19:54:06 -0400 |
On Apr 15, 2010, at 04:53, address@hidden wrote:
> I find this very interesting. Do you have some form of plan how to
> integrate this form of Guile and Emacs? Can it be done incrementally,
> that is, can the current elisp system and the guile system coexist in
> the same Emacs? If so, more hackers could help out with the integration,
> maybe.
I think I've written up some email in the past (you may have to search back
several months) about this. My project -- changing Emacs to use Guile object
types (at least the simplest ones) and Guile's allocator and GC -- can be done
somewhat incrementally. E.g., make sure Emacs uses accessor functions or
macros for all uses of type X outside of its own GC system (those changes can
be done upstream), and passes around Lisp_Object values rather than pointers to
struct Lisp_Foo (likewise), then redefine type X's implementation using more
appropriate Guile types, then work on type Y... currently strings, symbols,
vectors, and hashes are on my list; individual "misc" and "vectorlike" types
can come later, maybe.
I have no intention of getting rid of elisp from emacs, most certainly. As for
eventually replacing the entire Lisp implementation in Emacs with the Guile
one, well, I'm hoping that, like Andy suggested, it'll become an obvious win to
do so, but if we wind up for a while with two distinct language interpreters
(Emacs elisp and Guile VM) but a shared object system and working communication
between languages, while Andy madly tries to fix whatever performance problem
we might have run into with Guile's elisp implementation :-), I'd be okay with
that.
I've recently updated my code to be based on a recent development version of
Emacs, though I haven't published the updated version yet and there appears to
be some kind of GC problem or something at the moment. I also haven't got it
fully updated for guile 1.9.x (and the upcoming 2.0), which has a different GC
system anyways. (The new GC system is Boehm's GC library. There was an effort
to make Emacs use it some time back, by Dave Love, and I think some of those
changes will be needed for Emacs-with-Guile-2.0. So updating that work might
also be helpful?)
But, now that we've got bzr upstream and branching should be relatively easy,
perhaps I should clean it up a little and push it all into a branch on
savannah, if the maintainers are interested? If there's really interest in
working on it, I'd love to get some help....
Ken
- guile and emacs and elisp, oh my!, Andy Wingo, 2010/04/14
- Re: guile and emacs and elisp, oh my!, christian.lynbech, 2010/04/15
- Re: guile and emacs and elisp, oh my!, joakim, 2010/04/15
- Re: guile and emacs and elisp, oh my!, Andy Wingo, 2010/04/15
- Re: guile and emacs and elisp, oh my!,
Ken Raeburn <=
- Re: guile and emacs and elisp, oh my!, joakim, 2010/04/16
- Re: guile and emacs and elisp, oh my!, Ken Raeburn, 2010/04/16
- Re: guile and emacs and elisp, oh my!, Ken Raeburn, 2010/04/16
- Re: guile and emacs and elisp, oh my!, Stefan Monnier, 2010/04/16
- Re: guile and emacs and elisp, oh my!, Tom Tromey, 2010/04/20