What I've collected so far:
"Fear of Macros" covering syntax-rules, syntax-case and parse-syntax https://www.greghendershott.com/fear-of-macros/
"Mini-tutorial on explicit (and implicit) renaming macros in CHICKEN" http://wiki.call-cc.org/explicit-renaming-macros
An old and now out-of-date in parts post to chicken-users about macro systems covering sc-, rsc- and er-macro-transformer, and touches on syntax-case. https://lists.gnu.org/archive/html/chicken-users/2008-04/msg00013.html
The blog post @erkin is working on, which looks like it'll be great.
I'm writing a blogpost about the differences between Scheme macro models right now! Would you be interested in giving me C&C?
@erkin I sometimes program in strict C89 because that's fun and sufficient and the thought of portability support is cool. If I learned r5rs and say fuck off to 6 and 7, am I sealing my demise or is it as cool as C89?
@byllgrim R5RS is cool and good, and (mostly) forward compatible with R6RS and R7RS, but it's very limited in scope and you'll be relying on implementation-specific libraries for the most part.
@erkin That sounds great, I'd love to read a draft or notes or whatever you have 👍
@tfb Much appreciated! I totally agree with your comments and I'll update the post accordingly.
@tfb I don't have tutorial but showing the definition of `define-syntax-rule` and how to use will prolly help. See https://git.sr.ht/~amz3/arew-scheme/tree/master/src/arew/network/socket.scm#L33
It really looks like defmacro to me.
@zig Yeah, I'm looking for a collection of things that are more accessible than specs, reference docs, or just code.
So far I have "Fear of Macros" and the Chicken user guide, which is remarkably accessible.
@tfb Here's what I collected during my search for related works:
CHICKEN also has a wiki page for procedural macros in general: https://wiki.call-cc.org/eggref/5/procedural-macros
Scheme Wikibook's section on macros is a tad dated but it comes with a decent comparison `define-macro` with `syntax-rules`.
JRM's primer on `syntax-rules` is *the* most comprehensive document on `syntax-rules` I've come across: https://hipster.home.xs4all.nl/lib/scheme/gauche/define-syntax-primer.txt
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