ANNOUNCE

ANN.: CHICKEN 4.0.0

Version 4.0.0 of CHICKEN, the portable and practical Scheme system has
been released. In addition to many bugfixes and cleaning up, it provides
the following significant changes:

- The macro system has been completely rewritten and is now fully
  hygienic with highlevel R5RS "syntax-rules" macros and low level
  "explicit renaming" macros that allow full control over hygienie;
  "define-macro" is not available anymore

- A module system has been implemented that fully supports hygienic
  macros and still integrates with separate and cross compilation

- The PCRE-based regular regex code has been replaced by Alex Shinn's
  excellent "IrRegex" regular expression package (while still being
  API compatible to the old regular expression subsystem)

- New implementations of the tools for download, build and install
  extension libraries, which are easier to use and provide more
  flexibility than the old `chicken-setup'

- A new optimization mode "local" enables inlining of definitions
  that are still visible from other compilation units

- Better support for build and use on Windows (mingw and msys)

- Experimental support for cross-module inlining

CHICKEN 4.0.0 can be downloaded from:

  http://www.call-with-current-continuation.org/chicken-4.0.0.tar.gz

CHICKEN-related mailing lists can be found here:

  http://mail.nongnu.org/mailman/listinfo/chicken-users
  http://mail.nongnu.org/mailman/listinfo/chicken-hackers

Send bug reports to to <chicken-janitors@nongnu.org> or use the
`chicken-bug' program.

Many thanks to all who helped improve and extend the system.