SigScheme 0.7.1 Release Note
============================

What's SigScheme
----------------

SigScheme is a R5RS Scheme interpreter for embedded use.

  Homepage:
    http://uim.freedesktop.org/wiki/SigScheme


About This Release
------------------

This distribution of SigScheme 0.7.1 is first stable release of the
software. This release will soon be adopted by uim 1.4.0, the primary
application of SigScheme.

As declared in previous release, the main goal of this release is to acquire
stability and standards conformance. Though many parts have been validated
against the standards, reviewed, tested and fixed, following parts are not done
yet. Please keep in mind that using these features involves standards
conformity and/or stability problems.

  - R5RS characters
  - Some string procedures of R5RS
  - Multibyte character encodings
  - R5RS Vectors
  - SRFI-2
  - SRFI-8

And the hygienic macros feature is still likely having a problem. See
doc/spec.txt for details.

  - R5RS hygienic macros

And finally, these features are completely broken and not usable yet.

  - R5RS promises
  - SRFI-1

See the file 'QALog' for further information about the quality assurance state.

Please report us if you find a problem. And if you have a time, run
'make-report.sh' and send us the result regardless of PASSed or FAILed. It
greatly helps the development, especially for non-PC platforms.

Mailinglist: uim@freedesktop.org


What's New
----------

  - Fix 17 R5RS-conformance bugs and 4 SRFI-conformance bugs

  - Fix 8 critical, 13 major and 12 minor bugs

  - All particular language features and behaviors have become configurable via
    --enable and --disable options of the configure script, with automated
    feature dependencies resolution and conflict detection

See 'NEWS' for the fully detailed changes.


Notes for Packagers and System Integrators
------------------------------------------

  - libgcroots has been developed and bundled in this release. Since it is
    installed as a separated library independent of libsscm, please create its
    own package, and make SigScheme package depending on it with
    "--with-libgcroots=installed"

  - The ABI of libsscm varies by configuration. So to make libsscm sharable,
    please specify "--enable-conf=full" and keep other feature options
    untouched for system-installed library

  - The options "--enable-debug" and/or "--enable-backtrace" make SigScheme
    quite heavy. Please keep them unspecified for normal library


Thanks
------

Hans-J. Boehm and all authors of Boehm GC for the useful codes.

Tanaka Akira for letting me realize about the GC problem through the
presentation at Binary 2.0 Conference 2006.