I've just published draft #3 of SRFI 159.  It was submitted
by Alex Shinn, author of the SRFI.

  <https://srfi.schemers.org/srfi-159/>

Alex has asked me to announce "last call" for this SRFI.  He
believes that it is ready for finalization, but would like
to give reviewers one last chance to submit corrections and
feedback before we finalize it.

In particular, I appeal to anyone reading this to try the
sample implementation, run the tests, and send feedback
about your results.

If you're interested in this SRFI, please give your feedback
via the SRFI 159 mailing list before 2018/1/15.  After that,
assuming that no major revisions are required, we will
declare it final.

Here are Alex's comments on the draft:

  I've fixed some minor issues in the reference
  implementation and also submitted a pull request for some
  changes to the document, notably adding a library
  separation.

  It's a very complicated SRFI and we could discuss forever,
  but apart from aesthetics nothing has changed much from
  the original fmt which is somewhat widely used.  So I'm
  fine to make a last call for comments.

Here's the diff:

  <https://github.com/scheme-requests-for-implementation/srfi-159/compare/78aaf772df8e1f2aa71937d3540c4c7600d7305c...0e23f6c80f6dc93056197802a75abc50127b0e10>

Regards,

SRFI Editor