I've just published draft #2 of SRFI 171.  It was
submitted by Linus Björnstam, author of the SRFI.

  <https://srfi.schemers.org/srfi-171/>

Here are Linus's comments on the draft:

  I have incorporated all of John's
  suggestions.  The other changes are:

   * Added port-transduce

   * Added (srfi 171 meta) which contains helper
     functions for writing your own transducers.

   * Made tflatten a transducer, not a procedure
     returning a transducer (much like
     tconcatenate).

   * Added tinterpose, which interposes values.

  The reference implementation is updated to
  reflect the srfi document:

Here's the diff:

  <https://github.com/scheme-requests-for-implementation/srfi-171/compare/47c22bcf7d41872875ee4ffc86105360e105cd64..cbf45c8254b009239e70e8bc18f0aeb8f2e06cc6>

Regards,

SRFI Editor