In the documentation page: https://www.gnu.org/software/guile/manual/html_node/Syntax-Rules.html#Further-Information
the link to "Joe Marshall’s syntax-rules Primer for the Merely Eccentric" is dead: https://sites.google.com/site/evalapply/eccentric.txt There's an extant (and cleaned up by Wolfgang Corcoran-Mathe, a.k.a. Zipheir) version of the document on: https://www.sigwinch.xyz/misc/jrms_syntax-rules_primer.txt Another version: https://hipster.home.xs4all.nl/lib/scheme/gauche/define-syntax-primer.txt Thank you, Yuval Langer.
