Hygienic Macro Technology (PDF, 2020), by William D Clinger and Mitchell Wand. “In this paper, we summarize that early history with greater focus on hygienic macros, and continue the story by describing the further development, adoption, and influence of hygienic and partially hygienic macro technology in Scheme.”

Lisp Machine Inc. K-machine: The Deffenbaugh, Marshall, Powell, Willison architecture, as remembered by Joe Marshall.

Boxes and Glue, a typesetting library written in Go. By Patrick Grundlach.

Place name mappings probably need a time dimension too, says Rachel. I often wished for historic Google Maps (i.e. “What was that store 5 years ago?”).

The hunt for the cluster-killer Erlang bug (2021), by Dániel Szoboszlay. Good writeup.

ue.c, a tiny editor by Terry Loveall.

The Synsedizer, a 5-note polyphonic synthesizer in sed(1).