shen-elisp VS scryer-prolog

Shen is a very unique language, and one of the ways in which it is unique is that so much of its marketing, information, etc is non-obvious, and less accessible than you might want.

I think the main thing that I find compelling about shen is its type system, especially its sequent calculus system (for defining types in a way that would not be possible for most languages).

The other thing about it that is compelling is how portable it is. the main language is implemented in a simple kernel language; someone who wanted to port the language to a new environment would need to implement a small (relatively) set of primitives, and then you can run the entire shen environment on top of it.

Its worth looking into, however I do caution that it has plenty of rough edges etc.

For me personally I think of it as an inspiration for programming languages I wish to develop someday. Additionally, if you ever worked in a certain environment and really dislike that the language is a bit weak, shen might be something you could port to that language and use. For example, I recently updated https://github.com/deech/shen-elisp so that some of its rough edges were a bit smoothed down and should be more usable; I haven't actually written any shen yet that runs in emacs. That's still a ways away.

thank you! the scryer community deserves much of the credit too. everyone is welcome and encouraged to join us at https://github.com/mthom/scryer-prolog! some exciting plans in the pipe

Djot is the markup syntax that is used for the documentation of Scryer Prolog, using a parser written in Prolog:

https://github.com/aarroyoc/djota

It works well so far. One of the few limitations I noticed so far pertains to the formatting of tables. For instance, consider the table used in library(format) to describe control sequences:

https://github.com/mthom/scryer-prolog/blob/b0566e41503a6c8d...

It contains several entries that span multiple lines, yet are meant to denote only a single row of the table, such as:

    % | `~Nr`    |  where N is an integer between 2 and 36: format the            |