> It's very weird that there's already a "canonical" format for s-expressions, and then Racket apparently implemented something incompatible -- BUT WITH THE SAM

> It's very weird that there's already a "canonical" format for s-expressions, and then Racket apparently implemented something incompatible -- BUT WITH THE SAME NAME. The OP link is not part of the Racket language or its standard library. It is simply the documentation for a package written by a member of the community and hosted on Racket's official package platform — like putting something on PyPI if you're familiar with the Python ecosystem. The package itself is listed over here [0], which links us to the source code [1], which in turn attempts to link to a URL that suggests the idea is due to Rivest [2], but that URL has apparently died. [0] https://pkgs.racket-lang.org/package/csexp https://pkgs.racket-lang.org/package/csexp [1] https://gitlab.com/spritely/racket-csexp https://gitlab.com/spritely/racket-csexp [2] https://people.csail.mit.edu/rivest/Sexp.txt https://people.csail.mit.edu/rivest/Sexp.txt