I've just published draft #4 of SRFI 149.  It was submitted
by Marc Nieper-Wißkirchen, author of the SRFI.

  <https://srfi.schemers.org/srfi-149/>

Here are the author's comments on the draft:

  Simplify wording to make it easier to parse (following
  Shiro's suggestion).

Here's the diff:

  <https://github.com/scheme-requests-for-implementation/srfi-149/compare/2510ca4490f40a5f3cc595f3760456dc6be1b4f5...9166509730a5bacecc6cf5e8c33b94627213915b>

Regards,

SRFI Editor