Common Expression Language (CEL); lightweight expression evaluation

Common Expression Language - https://news.ycombinator.com/item?id=25377620 - Dec 2020 (106 comments)

Microsoft's alternative:

Pretty sure this has come to several times. And pretty sure I still don't see the advantages over s-expressions. :(

Embed Chez Scheme for great justice (and performance)?

Hard to see performance as a major concern in most of this. Though, if it does, hard to see this not morphing into a fuller language really quickly.