No, I’m quite busy lately. I went a long way to switch TeXmacs to chibi but 
then I realised that a standard r7rs implementation is not flexible enough to 
handle all the behaviours that TeXmacs' scheme needs and that Guile allows. s7 
seems a more pragmatic scheme where maybe one can make things work.

There are two main difficulty in porting TeXmacs’ scheme to other interpreters 
than Guile. All these are mainly related to tm-define and tm-define-macro which 
implement TeXmacs overloading system.

1) modules can refer to identifier which will be tm-defined later and in other 
modules without any specific forward declaration of which these identifier be. 
Chibi for example assing “undefined” to these indentifier since they are not in 
scope at the moment the module is read. Even if the identifier become available 
later on this binding will not be modified and that is too rigid. If one would 
like to stick to a standard r7rs implementation maybe one should add forward 
declaration to the code, which would mean go on an modify much of the existing 
scheme files….

2) r7rs schemes do not have a flexible enough module system, in particular one 
need the possibility to “open” a module and add new idenfitier or macro to the 
list of its symbols. I hacked some support for chibi but I’m not satisfies. 

My attempts to replace guile with chibi are here:

https://github.com/mgubi/texmacs/tree/scheme 
<https://github.com/mgubi/texmacs/tree/scheme>

the code start booting but the tm-defined functions are not correcly bound and 
there are error which prevents the interface to boot completely.

Integrating s7 should not take much on the C++ side (one/two days) but still 
the stumbling block is how to make the scheme code compatible with the new 
interpreter.


Best
Max





> On 2. Jun 2018, at 16:33, Darcy Shen <[email protected]> wrote:
> 
> 
> Any progress on S7 scheme ?
> 
> 
> ---- On Thu, 08 Mar 2018 00:49:06 +0800 Massimiliano 
> Gubinelli<[email protected]> wrote ----
> 
> Hi Bertrand,
> in principle yes even if right now I’m busy hacking the Qt port to track down 
> some bugs and update to Qt 5.0. I would also try to replace Guile with s7 
> Scheme which seems more easy to maintain and as fast (wrt. Guile 1.8).
> 
> At some point I though a bit about the plugins and felt that TeXmacs need to 
> support the jupyter protocol (https://jupyter.org <https://jupyter.org/>), 
> this would make it a perfect frontend for iPython and iHaskell for example 
> but we will give us access to many other systems supporting that protocol, 
> see for example this list of maintained kernels for jupyter:
> 
> https://github.com/jupyter/jupyter/wiki/Jupyter-kernels 
> <https://github.com/jupyter/jupyter/wiki/Jupyter-kernels>
> 
> It would make perfect sense to me and does not seem so difficult.
> 
> Best
> Max
> 
> 
> 
> > On 7. Mar 2018, at 13:26, Bertrand BRATSCHI <[email protected] 
> > <mailto:[email protected]>> wrote:
> > 
> > Hi,
> > 
> > Are you still interested in such a project ?
> > 
> > Bertrand
> > 
> > ———————-
> > 
> > WYSIWYG literate programming
> > Massimiliano Gubinelli 27, 2009; 10:31am
> > 
> > Hi, 
> > I would like to "advertise" TeXmacs (http://www.texmacs.org/ 
> > <http://www.texmacs.org/>) to the Haskell comunity as a possible front-end 
> > for literate programming in Haskell (and GHCI interaction). TeXmacs is a 
> > system which allows the production of documents featuring high quality 
> > typesetting (comparable to TeX) and high level of customizability (a la 
> > Emacs). It does not rely on TeX for the typesetting (but can export to 
> > Latex, HTML, etc..). It is written in C++ (unfortunately not Haskell) and 
> > use Scheme as extension language (specifically Guile). It has been in use 
> > for at least 10 years and has plugins for many external applications like 
> > Pari, Axiom, Maxima, Octave, R, Yacas, etc... 
> > 
> > From the webpage: "GNU TeXmacs is a free wysiwyw (what you see is what you 
> > want) editing platform with special features for scientists. The software 
> > aims to provide a unified and user friendly framework for editing 
> > structured documents with different types of content (text, graphics, 
> > mathematics, interactive content, etc.). The rendering engine uses 
> > high-quality typesetting algorithms so as to produce professionally looking 
> > documents, which can either be printed out or presented from a laptop." 
> > 
> > It would be nice to develop a pluging for GHC/GHCI to allow "direct" 
> > literate programming style with high-quality rendering. (If someone want to 
> > try before I find the time to do it myself.... ) 
> > 
> > Massimiliano
> > _______________________________________________
> > Texmacs-dev mailing list
> > [email protected] <mailto:[email protected]>
> > https://lists.gnu.org/mailman/listinfo/texmacs-dev 
> > <https://lists.gnu.org/mailman/listinfo/texmacs-dev>
> 
> 
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