Alex Shinn

Chibi scheme has almost all of those things, except non-hygienic macros: https://synthcode.com/scheme/chibi/ It's R7RS scheme, which is a very small, well designed core for lisp. 13k LOCs of C. Very easy to embed, and a nice C FFI. I absolutely love it. Geiser supports Chibi scheme out of the box, and I wrote this simple nREPL for it that I use: https://github.com/Risto-Stevcev/chibi-repl-server/ I use delimited continuations for conditions and restarts: https://gist.github.com/Risto-Stevcev/e6fd8417e34ef74a74adfadc468ea7d1

Rust people as usual. Compete disregard to prior art and blithe disregard to p's and q's when usurping other projects' names. https://synthcode.com/wiki/chibi-scheme

There is also unrelated Scheme(/Racket) library called IrRegular Expressions/irregex: https://synthcode.com/scheme/irregex It is notable for supporting lispy "SRE" syntax in addition to traditional PCRE syntax, standardized as SRFI 115: https://srfi.schemers.org/srfi-115/srfi-115.html

For Scheme I enjoy using Irregex: http://synthcode.com/scheme/irregex/ The key benefit is to have a proper DSL instead of a DSL hidden away inside an untyped string.

Orr Irregex and it's more limited SRFI: http://synthcode.com/scheme/irregex/ https://srfi.schemers.org/srfi-115/srfi-115.html

> Ignoring the flame bait, for me the only things I wish more regex engines supported (cough JavaScript) is the ability to ignore whitespace, and have named groups. Irregex? http://synthcode.com/scheme/irregex/

I have replaced most regular expressions with irregexes http://synthcode.com/scheme/irregex/ . They are sadly scheme specific, but does a lot for clarity. For anything more complex than small things that can be understood in less than 20 seconds, I use a parser generator, be it parsack (racket version of Haskell's parsec) or whichever I have at hand.

Chibi[0] supports Scribble. :) 0: http://synthcode.com/scheme/chibi/lib/chibi/scribble.html

I'm a fan of TeX2page[1] for converting (La)TeX to HTML. There are also similar TeX/Scribe-inspired markup processors. Scribble[2] comes to mind, and Chibi Scheme[3] even comes with a very lightweight, very configurable "Scribble" processor in the form of `chibi-doc`. Chibi's flavor is a little more similar to TeX (using '\' as the leader rather than '@', for example), if that's important to you. [1]: https://ds26gte.github.io/tex2page/index.html [2]: https://docs.racket-lang.org/scribble/index.html [3]: http://synthcode.com/wiki/chibi-scheme And here's Chibi's own manual written in it: https://github.com/ashinn/chibi-scheme/blob/master/doc/chibi.scrbl I think it would be freakishly easy to adapt chibi-doc into a general text preprocessor rather than an HTML generator, and honestly I've thought about it before. I may just do it yet :)

Have you looked at Chibi-Scheme? http://synthcode.com/scheme/chibi/

Alex Shinn's Chibi scheme, weighing in at 50kB (but with a dependency on the Boehm garbage collector, which weighs >1 Mb ...), might fit the bill. Some links 1. Andy Wingo (main Guile implemetor)'s "buyer's guide" to Scheme implementations - http://wingolog.org/archives/2013/01/07/an-opinionated-guide-to-scheme… 2. Chibi Scheme homepage - http://synthcode.com/scheme/chibi/

Scheme is not a single alternative. Racket [0] is a Scheme, which can be compared to things like Python or Ruby. There are other implementations, which should be used for different uses. For example, Chibi Scheme [1] is a nice alternative to Lua, but not to Python or Ruby. Given your other two Lisps, I rather make this list: * Common Lisp (which implementation?) * Racket * Clojure [0] http://racket-lang.org/ [1] http://synthcode.com/wiki/chibi-scheme

What I find interesting about The Bull is how Picasso's initial breakthrough is to reduce the prominent head to a small insignificant shape. Only with that done can he go on to reduce the rest of the body to such a degree. To me that demonstrates how attacking a problem from an unusual angle can yield an unexpected development, when trying to reduce the more obvious components first would probably result in something more like a bull and less like a work of art. cf. http://synthcode.com/blog/2009/06/Small_is_Beautiful