I've just published a fix for an error in the implementation
of SRFI 34 reported by Mr. Hamayama (thank you!).  The fix
has been approved by SRFI co-author Michael Sperber, so I
have incorporated it into the public document and added a
note to the Status section.

Here is Mr. Hamayama's description of the fix:

  Hello.
  I found a problem of 'guard-aux' in the reference
  implementation of srfi-34.
  This has already been fixed in R7RS (7.3).
  Therefore I fixed it in the same way.
  I hope this is useful for Scheme users.

Here's the diff:

  <https://github.com/scheme-requests-for-implementation/srfi-34/compare/1dd28ef15d5fab8f6d0d9c42d09e4f7d0ec57b22...50029b10336102fcdf1bb80bbf90b7b3f9bf708f>

Regards,

SRFI Editor