I've just published draft #3 of SRFI 251 <https://srfi.schemers.org/srfi-251/>. It was submitted by Sergei Egorov, author of the SRFI.
Here are Sergei's comments on the draft: Here is a third draft with an extra example (and test), demonstrating the 'staged' nature of define-syntax in stfi-251: macros defined in a definition group can be used in downstream expressions and definition groups. Here is the commit summary: - "Staged" define-syntax example added - Drop trailing whitespace. - Publish third draft. Here's the diff: https://github.com/scheme-requests-for-implementation/srfi-251/compare/draft-2..draft-3 Regards, SRFI Editor