I've just published draft #4 of SRFI 147.  It was submitted
by Marc Nieper-Wißkirchen, author of the SRFI.

  <http://srfi.schemers.org/srfi-147/>

Here's the diff:

  <https://github.com/scheme-requests-for-implementation/srfi-147/pull/4>

Here are Marc's comments on the new draft:

  Commit Summary

  * handle transformer specs that expand into syntax-error
  * add reference to SRFI 148
  * clarified scoping of let-syntax in spec

  File Changes

  * M srfi-147.html (10)
  * M srfi/147.scm (4)

Regards,

SRFI Editor