Execline – an interpreter-less scripting language
A blogger has also written a detailed overview (in 2018) on actually using this language: https://danyspin97.org/blog/getting-started-with-execline-sc...
The syntax somewhat reminds of Rebol/Red, but feels cleaner. Interesting stuff with great, thought-provoking documentation; definitely a candidate for "an ecosystem that fits inside the head of a single person".
I love the core (almost forth-like) idea of spawn'ing sections of the argv[] to 'interpret' sub-blocks
rather than having a central interpreter.
(very suckless)