This sounds a bit like Smalltalk! But with partial application…
It also reminds me of the Emily programming language: https://github.com/mcclure/emily/blob/stable/doc/tutorial.md
It also reminds me of the Emily programming language: https://github.com/mcclure/emily/blob/stable/doc/tutorial.md
Another relatively well known language in this space for its use as an alternative to especially Lua in embedding situations is Io: https://iolanguage.org/