Commit graph

26 commits

Author SHA1 Message Date
tnn
bd4005c834 remove incomplete libtoolization. I don't remember what problem
I was trying to solve here, but the new libtool doesn't like being
used like this, and it doesn't seem to be needed.
Fixes failure observed in bulk build.

XXX there's still a PLIST problem:
ERROR: The following files are in the PLIST but not in /usr/pkg:
ERROR:         /usr/pkg/lib/gauche/0.9/x86_64--netbsd/gauche--threads.so
ERROR:         /usr/pkg/share/gauche/0.9/lib/gauche/threads.scm
2010-01-05 13:21:23 +00:00
enami
17f39d4fc0 Make lang/gauceh work on arm baed NetBSD.
- Don't define DOUBLE_ARMENDIAN if netbsd.
- Backport alignment problem fix from trunk.
2009-11-29 13:01:06 +00:00
enami
8133bcb135 Update gauche to 0.9. Ok'ed by uebayashi.
- patch-ae is removed since the change is included in upstream.
- patch-a[h-k] is removed since the way to handle rpath leak
  is changed; now gauche-config is also `relink'ed before installed.

Here is breif list of changes from 0.8.13:

2009/11/22

    Gauche 0.9: Major Feature Enhancements

        * C API incompatible changes: Several incompatible C API
          changes are introduced, which may cause some extension to
          fail to compile. See API Changes in 0.9 for the details.

        * New features

              o New module: rfc.zlib: Zlib compression/decompression.

              o New module: rfc.sha: SHA2 support. rfc.sha1 is
                superseded by this module.

              o New module: util.sparse: Sparse vectors backed up by
                space-efficient trie, and hash-tables implemented on
                top of sparse vectors. They are memory efficient than
                the builtin hash tables when you want to keep tens of
                millions of entries.

              o Autoprovide: You no longer need 'provide' form for
                most of times. If (require "X") successfully loads
                X.scm and it doesn't have a provide form, the feature
                "X" is automatically provided. See the "Require and
                provide" section of the reference for more details.

              o Module gauche.test: Improved testing for
                exceptions. You can now test whether a specific type
                of condition is thrown by giving (test-error
                condition-type) as the expected result. See the manual
                entry for more details.

              o Module rfc.http: Now handles proxy by :proxy keyword
                argument. You can also easily compose
                application/x-www-form-urlencoded and
                multipart/form-data message to send form
                parameters. New procedures: http-put and http-delete.

              o Module rfc.mime: Added support of composing a MIME
                message.

              o Module gauche.threads: New procedures: thread-stop!,
                thread-cont!, thread-state.

              o Module gauche.termios: On Windows native support, this
                module provides Windows Console API instead of POSIX
                termios API, since emulationg POSIX termios on Windows
                is too much. A set of common high-level API that can
                be used on both POSIX and Windows are also added.

              o Module gauche.dictionary provides a bidirectional map,
                <bimap>.

              o run-process in module gauche.process, and builtin
                sys-exec and sys-fork-and-exec support :directory
                keyword argument to specify the working directory of
                the executed process.

              o Module file.util provides create-directory-tree and
                check-directory-tree.

              o Module gauche.net provides low-level socket
                operations: socket-sendmsg, socket-buildmsg, and
                socket-ioctl. Call-with-client-socket takes new
                keyword args to specify buffering mode for the socket.

              o Module www.cgi: cgi-main switches the buffering mode
                of stderr to line, so that the httpd log can record
                error messages line-by-line (much less clutter than
                before).

        * Major fixes and improvements

              o Fixed build problem on OSX 10.6 (Snow Leopard).

              o Performance is greatly improved on floating point
                number arithmetics, optional argument handling of
                builtin procedures, and case-lambda.

              o Now all whitespace characters defined in R6RS works as
                intertoken spaces in the source code.

              o A warning message is printed when a thread exits with
                an error and no other thread retrieve its status by
                thread-join! before the thread is GC-ed. This helps
                troubleshooting. Since thread-join! is the only way to
                know if the thread exitted by an error, you have
                either to call thread-join! to make sure to check the
                status, or to write the thread thunk to catch all
                errors and handle them properly.

              o Anonymous module name is #f now, instead of (somewhat
                arbitrarily chosen) |#|.

              o Some enhancements on symbols: 'uninterned' symbos are
                officially supported (symbols generated by gensym have
                been uninterned, but never been documented
                officially.) Uninterned symbols are written as
                #:symbol a la CommonLisp. Uninterned symbols are not
                registered to the internal symbol table, so there's no
                worry about name crash. The only way to refer to the
                same uninterned symbol from more than one place in the
                source code is to use srfi-38 notation (#n= and
                #n#). You can create uninterned symbol by
                string->uninterned-symbol and check whether a symbol
                is interned or not by symbol-intened?. There is also a
                new procedure, symbol-sans-prefix.

        * Windows support

              o Precompiled binary installer for Windows is now
                available. Get Gauche-mingw-0.9.exe. It is supported
                on Windows NT 3.5 and later (sorry, no support for
                Win9x.)

              o Precompiled binary does not include thread and gdbm
                support (yet). It is compiled to use utf-8 internal
                encoding.

              o Some Unix-specific system functions are not available,
                or have slightly different semantics because they are
                emulated via Windows API. If a function is not
                available on Windows, the reference manual says
                so. Windows version hasn't be used heavily, so expect
                bugs.

              o Large character set support on Windows Console is
                pretty limited. It is recommended to run gosh under
                Emacs for interactive use. See WindowsConsole for the
                details.

2008/10/6

    Gauche 0.8.14: Maintenance release.

        * Bug fixes

              o In some cases, an argument list passed to apply wasn't
                copied.

              o On some platforms, signal mask of threads could be
                altered inadvertently by exception handling due to the
                different behavior of sigsetjmp.

              o format now raises an error if there's an incomplete
                tilde sequence in the given format string.

              o Internal parameter (gauche.parameter) code had a bug
                that allocates not enough storage.

              o There was a couple of bugs in dynamic-load that could
                cause dead lock or leaving internal state
                inconsistent.

              o Module rfc.http: The 'host' field became inconsistent
                when redirection happened.

        * R6RS-ish extensions

              o R6RS reader directive #!r6rs, #!fold-case and
                #!no-fold-case are recognized now. The latter two can
                be used to change case-folding mode of the reader in
                the middle of the source code. See the manual for the
                details.

              o New core procedures: finite?, infinite?, nan?, eof-object.

              o Two argument version of log: (log z b) is for base-b
                logarithm of z.

        * Extension-building improvements

              o gauche-config script provides --rpath-flag option to
                retrieve platform-specific rpath link option
                (e.g. "-Wl,--rpath -Wl,").

              o gauche-package script accepts --local option to the
                'compile' and 'install' command to add local include
                paths and local library search paths
                conveniently. Basically, gauche-package compile
                --local=DIR package.tgz causes -IDIR/include and
                -LDIR/lib to be added to the actual compile and link
                command lines. To give more than one directory, say
                --local=DIR1:DIR2:....

              o A stub generator and ahead-of-time compiler (the
                facility to pre-compile Scheme code into VM
                instruction array as static C data) is integrated,
                allowing C and Scheme code to be mixed in the same
                source; this feature is not yet documented and the
                details are subject to change, but the curious mind
                can take a look at ext/dbm/*, which were much simpler
                than the previous version.

        * Additional improvements, new procedures & macros

              o GC is now Boehm GC 7.1.

              o Large part of VM code is rewritten for better
                performance and maintainability.

              o New procedure: hash-table-copy.

              o New convenience macros: rlet1 and if-let1.

              o You can now hook exit operation by the exit-handler
                parameter. See the "Program termination" section of
                the manual for the detailed description of this
                feature.

              o Made sys-lstat work like sys-stat on Windows platform;
                one less headache to write cross-platform code.

              o Module gauche.net: Constants SHUT_RD, SHUT_WR and
                SHUT_RDWR are defined to pass to socket-shutdown.

              o Module file.util: New convenience procedures:
                copy-directory*, touch-files, remove-files,
                delete-files.

              o Module dbm.*: Renamed dbm-rename to dbm-move for the
                consistency. (The old name is kept as alias for the
                backward compatibility). Added dbm-copy and dbm-move
                missing from dbm.fsdbm. Also properly detects
                variations of suffixes of ndbm-compatible database at
                configuration time.

              o Module www.cgi: :mode option is added to the MIME part
                handler passed to get-mime-parts to specify the
                permissions of the saved file.

              o Module rfc.ip: New procedure: ipv4-global-address?.
2009-11-27 09:26:06 +00:00
joerg
4d222d9e8c Don't leak rpath references to the work directory. Bump revision. 2008-06-21 17:17:51 +00:00
tnn
d9bcd9acf1 Update to Gauche-0.8.13.
pkgsrc changes
- DESTDIR support
- use libtool
- make iconv work
- fix a PLIST error
- close PR pkg/37897

Upstream changes
- Sorry, too many to list here
2008-02-25 23:14:19 +00:00
uebayasi
721d9b7a4e Update Gauche from 0.8.6 to 0.8.9.
Important changes excerpted from web pages:

2007/1/17

    Gauche 0.8.9: Major maintenance release
      + Bug fixes
      + Miscellaneous improvements:

2006/11/18

    Gauche 0.8.8 important patch: There is a bug in main.c that makes gosh
    exits silently without reporting errors when a Scheme script raised an
    unhandled error. Please apply the patch shown in the following message:
    http://sourceforge.net/mailarchive/forum.php?thread_id=30949517&forum_id=
    2043

2006/11/11

    Gauche 0.8.8: Major maintenance release
      + Important Changes:
          o Exact rational number is supported; now you get 1/3 from (/ 1 3).
            To obtain inexact number from division of two exact numbers, you
            have to use exact->inexact explicitly. With this change you can get
            more exact result, but if your code has relied on the old Gauche
            behavior that automatically converts rationals to inexact reals,
            your code may run very slowly in this release of Gauche (since
            exact rational arithmetic is much slower than flonum arithmetic).
            For the smooth transition, a compatibility module compat.norational
            is provided, which makes the / operator behaves like before. See
            the manual entry for the details.
          o The reader is more strict about utf-8 encoding. Consequently, some
            source files in other encoding that happened to be accepted by
            previous versions of Gauche may no longer work. If you get an
            error, either convert the encoding of the source, or use "coding:"
            magic comment (See "Multibyte scripts" section of the reference
            manual).
          o The test-module routine in gauche.test is fixed so that it detects
            more references to undefined global variables that have been
            overlooked. You may get an error something like "symbols referenced
            but not defined: ...". In most cases, they are from typos. See the
            manual entry of gauche.test - Unit testing for the details.
          o New modules:
              # sxml.serializer: Generic routine to convert SXML to other
                formats like XML or HTML. Written by Dmitry Lizorkin and ported
                to Gauche by Leonardo Boiko.
              # util.trie: Implementation of Trie. Originally by OOHASHI
                Daichi, and hacked by numerous Gauche hackers.
              # util.rbtree: Implementation of Red-Black Tree. Written by Rui
                Ueyama.
          o A bug in port locking routine, that caused a race condition on
            multiprocessor machine, is fixed. As a side effect, port lock
            operation became a bit faster.
          o C API prospected change: Scm_Eval, Scm_EvalCString, and Scm_Apply
            will have different API in the next release. The current API is
            kept under a different name, Scm_EvalRec, Scm_EvalCStringRec, and
            Scm_ApplyRec. If you are using those functions, please make changes
            until the next release.
      + Miscellaneous fixes and improvements:

2006/4/12

    Gauche 0.8.7: Major maintenance release
      + Bug fixes:
      + Improvements:
2007-01-19 12:59:00 +00:00
jlam
f2c4259b7f * Clean up the way this package was trying to pass in rpath flags for
iconv and gdbm.  We now patch Makefile.in instead of the configure
  script and just pass in thr rpath flags via environment variables.

* Honor PKGINFODIR.
2006-03-31 18:35:22 +00:00
jlam
d98cf6bbec Avoid hardcoding /usr/pkg into the rpath ... this is already taken care
of in the right way by the package Makefile using SUBST_SED.
2006-03-31 17:40:12 +00:00
joerg
a992ed442a Add DragonFly support. Fix isnan and isinf detection. 2005-12-30 14:18:51 +00:00
uebayasi
bfdc779de0 Update gauche to 0.8.6. Patch provided by Kenji Hisazumi.
From this release we don't use external Boehm GC library because
gauche needs GC to be built with special compilation options.

New features in 0.8.6:

    * New modules:

	+ dbi: Database independent access layer, providing unified
	  access to various relational databases. You need separate
	  "driver" packages to access the actual RDBMS. There are a
	  few driver packages available at
	  http://www.kahua.org/cgi-bin/kahua.fcgi/kahua-web/show/dev/DBI/.
	    Note: If you have been using the separate dbi module, make
	    sure you remove it before using the new dbi and dbd
	    modules. You can find the old dbi.scm under somewhere like
	    /usr/local/share/gauche/site/lib (the actualy directory
	    depends on the configuration when you've installed the dbi
	    module).
	+ util.relation: A framework to work with relations (as defined
	  by Codd). The result of database access via dbi is represened as
	  a relation.
	+ text.sql: SQL parser/constructor. Full features are not
	  implemented yet, but used in dbi module for prepared queries.

    * New SRFIs:

	+ SRFI-40 (Library of streams) as util.stream.
	+ SRFI-43 (vector library) as srfi-43.
	+ SRFI-45 (Primitives for Expressing Iterative Lazy
	    Algorithms) : built-in.

    * New built-in proceduers global-variable-bound? and
      glboal-variable-ref. The former supersedes symbol-bound? (
      symbol-bound? is now deprecated and will go away in the future
      releases. Code that uses symbol-bound? should change it to
      global-variable-bound?. ). The latter removes some need of using
      eval just to peek the value of the global variable.

    * New regexp procedures: regexp-replace*, regexp-replace-all*,
      regexp-case-fold?.

    * Stack overflow handling is largely improved. You can see better
      performance if your script frequently oveflows the stack.

0.8.5 was a maintainance release.

0.8.4:

Gauche 0.8.4:

The compiler and VM have been rewritten. Now Gauche runs faster with
less memory (as fast as 1.9x, or cosumes 0.7x memory, in best cases of
our tests. But your mileage may vary.) The compiler now does simple
closure optimization, so the typical loop-by-local-closure style code
will get the advantage. On the other hand, you won't see much gain in
OO-heavy or library-heavy programs.

Other changes:

    * New features:

	  + srfi-42 (Eager comprehension) is supported.
	  + srfi-55 (require-extension) is supported.
	  + A simple sampling profiler is implemented to help tuning
	    programs. Check out "Profiling and tuning" section of the
	    reference manual. The profiler may not be available on all
	    platforms.
	  + We provide an experimenal Windows/MinGW binary package for
	    the convenience. See download page.
2005-12-09 15:38:54 +00:00
agc
475ab002d7 Add RMD160 digests 2005-02-24 09:03:05 +00:00
minoura
c6c141f087 Correct GNUC detection.
Fixes (at least) i386--netbsd compilation.
2005-01-27 10:15:35 +00:00
kei
4e8cef0fb0 updated Gauche to 0.8.3. changelog follows. it now builds with boehm-gc-6.x.
2004/12/2

    Gauche 0.8.3: Bug fix release

    It turned out that 0.8.2's source-code encoding detection feature had a
    bug; if you're using Windows-style (CRLF) line-separator, the coding-aware
    port repeats one character at the beginning of the second line. It doesn't
    do any harm if first few lines of your code are comments, but it's annoying
    when you stumbled on it, so I decided to release a fixed version.

    This release also includes a couple of improvements: The coding-aware ports
    recognizes Emacs-style coding name (e.g. euc-jp-unix) and just ignores the
    Emacs-specific suffix (e.g. -unix). And external representations of
    f32vector and f64vector are now accurate.

2004/11/29

    Gauche 0.8.2: Major revision of infrastructure.

     * New features
         - A condition (exception) system a la srfi-35 and (part of) srfi-36
            is supported. Used with guard (srfi-34), now it is possible to
            handle exceptions in more comprehensive way. See the "Exception"
            section of the manual, which has been rewritten accordingly.
         - Source-code encoding detection. Now Gauche recognizes a special
            comment like "coding: utf-8" near the beginning of the source file,
            and use appropriate conversion to load the source file. See
            "Multibyte Script" section of the manual for the details. This
            feature alone can be used independently from loading programs, via
            coding-aware ports, so the programs that processes Scheme scripts
            can also recognize the special comments.
         - Virtual ports are supported. Virtual ports are the ports whose
            behavior can be customized in Scheme. See the description of
            gauche.vport module in the manual for the details.
     * Improvements
         - Updated GC to Boehm GC 6.3. It fixes some GC-related problems on
            64bit architectures.
         - gauche.fcntl: F_GETOWN and F_SETOWN are supported, if the system
            provides them.
         - gauche.termios: c_cc field of struct termios is now accessible from
            Scheme. (Thanks to Kogule Ryo).
         - gauche.uvector: Added string->s8vector! and string->s8vector!.
            TAGvector-copy!'s API is changed so that it matches with srfi-13's
            string-copy! and srfi-43's vector-copy!.
         - Port implementation is cleaned up. Now line count is available not
            only for file ports but any ports (as far as it's doing character I
            /O). byte-ready? is added for binary I/O polling.
         - text.csv: quote character is customizable.
     * Bug fixes
         - INCOMPATIBLE CHANGE: The previous version's rfc.mime's API was
            broken. It couldn't handle MIME part whose message was non-encoded
            binary. Now MIME part stream parser is re-implemented using virtual
            ports, and the reader argument passed to the MIME part handler is
            dropped. www.cgi is also affected if you're using customized
            handler for file uploads. See the reference manual for the new API.
         - SONAME of the library is now set, if the platform supports it.
         - gauche.array: Some functions were not exported, although they were
            mentioned in the manual.
         - gauche.charconv: Fixed a bug in converting 2nd plane of JIS.
         - gauche.regexp: regexp-replace-all looped infinitely for some
            patterns. Now it raises an error.
         - dbm.fsdbm: It couldn't store binary data.
         - rfc.822: rfc822-parse-date returned wrong month number (off by
            one).
         - util.match: Fixed a bug in quasipattern. The description of
            quasipatterns in the reference manual is also revised to explain it
            better.
         - srfi-19: date->julian-day didn't recognize tz-offset.
         - Some bugs in numeric code are fixed.
         - let-args had a bug in parameter handling of 'else' clause.
         - directory-list: when :filter-add-path? is true, there was a bug
            that "." and ".." were included in the results even :children?
            argument was true.
         - There was a bug that causes an infinite loop during class
            redefinition.
         - let-keywords*: fixed a bug that corrupts expansion when used in
            r5rs macro.
     * C API Change
         - Class initialization API is overhauled. Scm_InitBuiltinClass is
            obsoleted; use Scm_InitStaticClass instead.
         - Port structure is changed quite a bit.
         - Functions to convert Scheme integers to C integers are revised, to
            handle out-of-range error in more flexible way.
         - API of Scm_Load, Scm_LoadFromPort and related functions are changed
            to support more flags.
2005-01-16 08:57:55 +00:00
minoura
f007cb24a7 Updated to 0.8.1.
Gauche-0.8.1 is a maintainance release of Gauche-0.8.
Gauche-0.8 release announce is cited here:

* *New Features*

    o Auxiliary scripts: Gauche now installs a few scripts
      that help to build and install extension packages. The
      gauche-package script handles download, unpacking,
      configuration, building and installation in one command
      invocation. See the description of "Using extension
      packages" section of the manual. (NB: this feature is
      still new and may have problems, but hey, let's give a
      try.) A couple of auxiliary scripts, gauche-cesconv and
      gauche-install can be called from Makefile. They don't
      have documentation yet, but try --help option for these
      scripts.

    o Module util.match: Andrew Wright's match macro is
      bundled. It is modified to handle Gauche's object system.

* *Improvements*

    o A couple of performance tuning were done for I/O and
      loading Scheme files.

    o Now you can subclass <error> class as well as
      <exception> class to define your own error type. A new
      built-in macro guard, which is SRFI-34 compliant, can be
      used to handle errors selectively. Eventually the errors
      from built-in procedures will have more structured
      exception hierarchy.

    o New built-in system procedures: sys-lchown, sys-realpath.

    o Built-in sort routines now have stable versions,
      stable-sort and stable-sort!.

    o New built-in macro: let/cc.

    o New built-in keyword procedures: delete-keyword, delete-keyword!.

    o New built-in regexp procedure: rxmatch-num-matches.

    o Module file.util: new procedures: file-is-symlink?,
      file->string, file->string-list, file->list, file->sexp-list.

    o Module gauche.net: documented the previously
      experimental procedures: socket-send, socket-sendto,
      socket-recv, socket-recvfrom, socket-getpeername,
      socket-getsockname. Now these are official procedures.

    o Module gauche.process: process-command wasn't exported,
      even though it was documented.

    o Module gauche.test: you can control whether the error in
      the test procedure is reported or not by an envioronment
      variable GAUCHE_TEST_REPORT_ERROR and a global variable
      *test-report-error*. Useful to find a problem during testing.

    o Module www.cgi: new procedure cgi-get-metavariables;
      allows the user routine to take metavariables via
      cgi-metavariables parameter, so that cgi scripts can be
      easily modularized.

    o Module gauche.parseopt: support of "optional
      option-argument" is added.

    o Module gauche.array: homogeneous numeric array types are added.

    o Module text.html-lite: added frame-related tags.

* *Bug Fixes*
 [snip]
2004-08-08 07:05:38 +00:00
minoura
844526decd Regen. 2004-06-02 13:57:33 +00:00
kei
9102f23b9b Updated Gauche package to latest release, 0.7.4.2.
Many changes were made from previous packaged version, 0.6.3;  Lots of
improvements and bug fixes, including security ones.  Please take a look
at its WWW page for more detailes.

http://www.shiro.dreamhost.com/scheme/gauche/

pkgsrc changes:

- support buildlink2.  buildlink3.mk is also added but not tested since
  I have not moved to buildlink3 environment yet.

- this package now uses libgcudevel/boehm-gc instead of self contained,
  slightly modified one.  It seems that this package runs under m68k.
2004-03-29 09:34:26 +00:00
seb
906d89b435 Regen. 2003-07-04 19:37:03 +00:00
uebayasi
d7f39ef4a4 Install man pages into ${LOCALBASE}/man. PR20639 by Tomoyuki Sahara. 2003-03-10 01:43:58 +00:00
wiz
f333251f43 regen (without RCS Ids inside the patches) 2002-10-18 08:08:31 +00:00
minoura
7aa45ae445 gauche-refj.texi cannot be extracted by non-euc-jp gosh.
Pointed out by Shiro, the original author of Gauche.
2002-10-12 13:52:07 +00:00
minoura
a9f6119e45 Build cleanup: ${prefix}/info -> @infodir@ 2002-10-08 14:36:29 +00:00
minoura
a7f0e0b3b2 Upgrade lang/gauche package to 0.6.3. 2002-10-02 08:25:13 +00:00
minoura
444708f29f Updated to 0.5.4.
0.5 -> 0.5.1
 * Ported to Windows/Cygwin, HP-UX11.0 and FreeBSD 2.2
 * Incompatible fix to conform final SRFI-22
 * Various bug fixes
Gauche-gl is updated to 0.1.2 to follow Gauche 0.5.1 changes.
SXML-gauche-0.9, Oleg Kiselyov's XML tool suite, is available.

0.5.1 -> 0.5.2
  * Feature addition : String interpolation
  * Bugfixes
  * More POSIX API
  * Manpages
  * RPM packages for Linux/i386

0.5.2 -> 0.5.3
There're not many visible changes in this release
except a few bug fixes.

0.5.3 -> 0.5.4
 * Buffered port routine is rewritten to use Gauche's own
   buffering code instead of stdio.
 * Lots of high-level file/directory utility functions are added as
   file.util module.
 * Added weak vector. See "Weak pointer" section of the reference manual.
 * Added parameters. See gauche.parameter section of the reference manual.
 * Added pseudo tty interface, sys-openpty and sys-forkpty. See
   "Termios" section of the reference manual.
 * Added define-values.
 * Added port?.
 * System objects, such as <sys-stat>, <sys-group> and <sys-passwd>,
   are integrated to the object system. Information of these objects
   can now be accessed via slots, instead of individual procedures.
 * Improved dynamic string handling performance.
 * Fixed a nasty bug in metaobject protocol handling code
   that corrupted memory.
 * Fixed a compiler bug that prevented proper tail recursion in some cases.
2002-05-19 07:58:25 +00:00
minoura
525ad4ad6a Upgrade Gauche pkgsrc to 0.5.
A quick NetBSD/i386 support patch is added.
2002-02-01 08:10:39 +00:00
minoura
4e2e059fb9 Updated to 0.4.2. 2001-07-15 13:52:28 +00:00
minoura
36324cb7f5 Gauche, yet another R5RS scheme implementation. 2001-05-31 09:56:58 +00:00