[TimTheTinker]

Not just Lisp, but any language that has strong support for either literal in-language data expressions like JSON or YAML, or meta-language support like Ruby, Elixir, JSX/TSX (or both!).

Every time you write a React JSX expression, terraform file, config.yaml, etc., you're using a DSL.

I once wrote a JSON DSL in Ruby that I used for a template-based C# code generator. This enabled a .NET reporting web app to create arbitrarily shaped reports from arbitrary rdmbs tables, saving our team thousands of hours. Another team would upload report data to a SQL Server instance, write a JSON file in the DSL, check it against a tiny schema validator website, submit it, and their reports would soon be live. One of the most productive decisions I ever made.

[hot_gril]

Technically yeah, but JSX isn't what people think of when you mention a DSL. I know JS, I know HTML, so I know JSX immediately since it's just templatized HTML inside JS.