I recently got back to my work on literate #GRASP, and I think things finally started to look good. I implemented a new document representation (the previous one was built from cons-cells and multiple hacks), and I have some working tests that are capable of rendering this representation to "unicode-art" strings, and I'm currently working on a new parser that would work well with that representation.
I still have a long way to go before I get a running system, and I don't think it's a very good literature, but if you're a #Scheme maniac or a fan of #LiterateProgramming and you don't find the #Java runtime environment too repulsive, I invite you to follow the work and provide your feedback:
https://github.com/panicz/grasp/blob/main/literate/grasp.org
Currently, when exported to pdf, the document has about 100 pages, and it mainly describes language extensions that were developed for Kawa Scheme to develop GRASP. I think it might be a delight to people who enjoy studying language extensions, but unfortunately the part about the architecture and implementation of GRASP has yet to be developed.
(the document is written in #Emacs #OrgMode using its #noweb component for literate programming. I recommend reading it from Emacs rather than from its github preview)