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librep 0.92.5-3
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1 News
******

0.92.5
======

   * Assume stack-direction 'downwards' for all sparc, hppa, mips,
     mipsel, ia64 and alpha variants (fixes compilation) [Christopher
     Bratusek]
   * Fix compilation due to bug in libtool 2.0+ if /bin/sh is not
     /bin/bash [Christopher Bratusek]
   * rules.mk clean-up [宋文武] [Daniel M. German]:
        x Variables that depend on prefix should not be recursive
        x Don't set prefix, datadir, libdir, datarootdir and repdir
        x Use pkg-config to get the absolute path for repcommonexecdir
   * Update .gitignore [Meng Zhang]
   * Update config.sub to 2014-09-11 from autoconf

0.92.4
======

   * Fix building librep on ARM [Togan Muftouglu, Christopher Bratusek]

   * Fix building librep on AArch64 [Kim B. Heino]

   * Misc.  updates to debian packaging scripts [Christopher Bratusek]

0.92.3
======

   * More entities support for xml-reader (gt, umlauts, esszett)

   * Fix address of FSF in all files [Togan Muftouglu]

   * Assume stack-direciton 'downwards' for all ppc and s390 variants
     [Kimb B. Heino]

   * Updated 'install-sh' to version 2011-01-19.21.

   * Added 'program-exists-p' [Mark Triggs]

0.92.2.1
========

   * Assume stack-direction 'downwards' on ARM [Kim B. Heino]

0.92.2
======

   * Sync librep.spec with Fedora [Kim B. Heino]

   * Assume stack-direction 'downwards' for x86_64.  Self-detection
     doesn't work with gcc >= 4.7.0 [Kim B. Heino]

   * read_line no longer aborts at 400 characters [Timo Korvola]

0.92.1b
=======

   * Fixed a bug in librep.pc

0.92.1
======

   * Fixed building REP on OS-X 10.6 by not exporting librepm.sym via
     libtool[John Harper]

   * Fixed building REP on OS-X 10.7 by defining a proper ALIGN if ffi.h
     doesn't provide one [John Harper]

   * Fixed detection of FFI, if ffi.h isn't found [John Harper]

   * Added various missing symbols in librep.sym [John Harper]

   * Fixed a warning from configure regarding librep.pc [Christopher
     Bratusek]

   * Removed VPATH from Makefiles, to allow building REP using 'makepp'
     [Daniel Pfeiffer]

   * Added 'positon' meta-function [Jeremy Hankins] [Eli Barzilay]

   * Imported utility-functions from Sawfish: 'beautify-symbol',
     'remove-newlines', 'option-index' and 'string->symbol'.

0.92.0
======

   * Bumped soname to 16.0.0 [Ian Zimmermann]

   * Make librep loading shared-objects, rather than libtool-archives
     [Kim B. Heino]

   * Removed architecture and version from installation paths
     [Christopher Bratusek]

   * Improved debian packaging-scripts [Ian Zimmermann, Christopher
     Bratusek]

0.91.1
======

   * 'rep.ffi.util' module [Sergey Bolshakov]

     A new module containing utils for rep's ffi binding is added.

   * Fixed librep.pc to prevent a possible build issue in rep-gtk or
     sawfish (occured on fedora 14) [Christopher Bratusek]

   * New functions [Teika Kazura]

     'function-name' returns the name of the function object.  (*note
     Functions::)

     'remove-hook-by-name' removes functions from a hook by their name.
     (*note Normal Hooks::)

   * Documentation [Teika kazura]

     Function 'in-hook-p' now has the documentation.  (*note Normal
     Hooks::)

     New sections "Module Aliases" (*note Module Aliases::), "Module
     Limits" (*note Module Limits::).

   * Minor bugfix: 'remove-hook' used to emit an error if the hook was
     unbound, but it's fixed.  [Teika kazura]

   * fixed the spec-file [Kim B. Heino]
   * updated debian packaging-scripts (mostly) to the new format
     [Christopher Bratusek]

0.91.0
======

   * Update note [important]:

     You need to rebuild rep-gtk and sawfish against this version of
     librep, because of an ABI-change.

     Your lisp files have to be byte-compiled again, too.

   * Halfway improved 'debug-on-error' and 'backtrace-on-error' [Teika
     Kazura]

     Previously, setting these values to 't' triggered the debugger /
     backtracer even if the error was signalled inside of
     'condition-case'.  This behavior can still be obtained by setting
     them to the symbol 'always'.

     Now, if they're 't', the debugger / backtracer is invoked only if
     the control is not inside of any 'condition-case'.  Notice that the
     condition is NOT if the error is actually handled by an error
     handler.  It is not the best, but we can't improve it.

     The default value of 'backtrace-on-error' is now 't'.

   * When you evaluate a closure interactively, the module it belongs to
     is printed, too.  [Teika kazura]

   * Improved functions' docstring support [Teika Kazura]

     Handling of functions' docstring is improved.  The revised
     'documenation' function is ensured to return the docstring of
     functions, macros, and special forms (*note Docstrings::).

     Previously, fuctions' docstrings of byte-compiled user-files (eg:
     pager.jlc) were lost, but not now.

   * New function 'subr-structure' [Teika Kazura]
     It returns the module a subr belongs to.

   * Major documentation revision [Teika kazura]

     Reorganized documentation files.  Many capital letter name files
     were updated or merged into the info.

     New entries: *Note Crash course for Elisp users::, *Note
     Closures::, on leading tilde in a filename and tarball access
     (*note File Handlers::), fully revised the module section (*note
     Modules::), improved description on invocation (*note
     Invocation::), improved "fluid" and 'let' descriptions (*note Fluid
     Variables::, and *note Local Variables::), improved the read syntax
     of character (*note Characters::).  Module names are supplied for
     all functions.

     Supplied documentation to some functions: Input stream functions
     'peek-char', 'read-char' (*note Input Functions::), list functions
     'remove-if', 'remove-if-not' (*note Mapping Functions::),
     'table-size' (*note Hash Tables::), 'setcar', 'setcdr' and 'cdddr'
     family (*note Cons Cells::), 'assoc-regexp' (*note Association
     Lists::).

   * 'define-special-variable' is replaced by 'defvar-setq' [Teika
     kazura]

     The former is still valid, but it's a very confusing name,
     therefore the latter is introduced.

   * Makefile's uninstall rule has been fixed [Christopher Bratusek]

0.90.6
======

   * renamed 'file-uid-p' to 'file-uid' and 'file-gid-p' to 'file-gid'
     [Christopher Bratusek]

   * Minor doc improvements [Teika Kazura]

     Describes functions 'signal' and 'string-split'.  Correction in
     suffix handling of 'load' function.  More details on the function
     'require'.

   * improved specfile [Kim B. Heino]
   * Process execution failure emits better message.  [Teika Kazura]

0.90.5
======

   * Byte compiler bugfix in docstring loss [Teika Kazura]

     Practical effect: Previously, if a user byte-compile files, then
     the docstring is lost in sawfish-config.  This is fixed.

     Details: Loss of docstring happened only if (1) byte compiler is
     not given '--write-docs', so only byte-compilation by user (2)
     defvar is invoked within macro definition, including 'defcustom' in
     Sawfish.  Plain defvar was not affected by this bug.  It was
     because in 'trans-defvar' in lisp/rep/vm/compiler/rep.jl, the
     docstring is stored in a wrong property 'variable-documentation'.
     It is corrected to 'documentation'.

     Symbol 'variable-documentation' is not used elsewhere, including
     Sawfish and emacs' sawfish-mode.

   * Our own implementation of dlmalloc is disabled since 2002, as it
     breaks librep on several architectures.  From this version on, we
     don't ship it.  [Kim B. Heino]

   * Our own implementation of alloca/memcmp is not needed, rely on
     libcs instead.  [Kim B. Heino]

   * Majorly improved the debian and rpm packaging scripts [Christopher
     Bratusek] [Kim B. Heino]

   * Install headers to $includedir/rep/ instead of $includedir/
     [Christopher Bratusek]

   * Autotools improvements (Makefile, autogen.sh & Co.)  [Christopher
     Bratusek]

   * Added 'file-gid-p' function for getting the gid of a file
     [Christopher Bratusek]

   * Added 'file-uid-p' function for getting the uid of a file
     [Christopher Bratusek]

0.90.4
======

   * Library version bumped to 9.4.1

   * Use $prefix/lib instead of $prefix/libexec

   * Fixups for OpenBSD [Jasper Lievisse Adriaanse]

   * Don't hardcode /usr in manpage installation path

0.90.3
======

   * Added 'file-executable-p' function

   * Improved spec-file [Kim B. Heino]

   * Improved ebuild [Fuchur, Christopher Bratusek]

   * Fallback check for ffi, if there's no libffi.pc [Vincent Untz]

   * Removed rep-config script (use librep.pc instead)

   * Added man-pages for 'rep', 'repdoc', 'rep-remote' and
     'rep-xgettext' [Debian]

   * Added debian packaging scripts based on the official ones

0.90.2
======

   * Fixed a major defunct with prin1 + utf8 [Timo Korvola]

   * Fixed descriptions of formats %s and %S in streams.c

0.90.1
======

   * Properly terminate the rep interpreter [Jürgen Hötzel]

   * Use readline history in interactive mode [Jürgen Hötzel]

   * Tar file-handler does now support XZ compressed tarballs

   * Tar file-handler does now support LZMA compressed tarballs

   * Improved regex for parsing tar output in the file-handler [Alexey
     I. Froloff]

   * We do now correctly check for libffi

   * Improved libffi-binding [Alexey I. Froloff]

   * Updated librep.sym for missing entries [Alexey I. Froloff]

   * Fixed an incomplete definition

   * Added -L$prefix to libs section of the .pc file

   * No C++ style comments in C code

0.90.0
======

   * Added UTF-8 Support!  [Wang Diancheng]

   * Remove scheme and unscheme modules

   * Going on with code-cleanup

0.17.4
======

   * Don't ignore datarootdir setting

   * Fixed an aclocal warning from configure.in

   * Improved configures ending message

   * Doc update in 'Numbers' section.  Lacking description on machine
     dependence is added.  [Teika]

   * Remove tar target from Makefile [Ritz]

0.17.3
======

   * Updated MAINTAINERS

   * Dropped rep.m4 - use librep.pc instead

   * Improved librep.pc

   * Updated librep.spec

   * Add -L/lib$libsuff to READLINE_LIBS [T2 Patch]

   * Fix compilation on PPC64 [Marcus Comstedt]

   * Small fixup in src/fake-libexec [SuSE]

   * No rpath in src/rep-config.sh [Fedora]

   * Added ebuild [Harald van Dijk]

   * Improved Makefile's distclean rule

   * Reworked autogen.sh

   * Reworked configure.in

   * Major rework of the spec-file

   * Improved configure's ending message

   * Fixed configure.in's templates for autoheader

   * BSD-Tar is not supported by librep, give users a usefull warning
     message [Mark Diekhans]

0.17.2
======

   * fixups for configure.in

   * updated BUGS, HACKING and README

   * define inline if undefined (fixes compiler warnings)

   * create the destination directory for the .pc file before installing
     it

   * fixed in issue with FreeBSD in numbers.c [FreeBSD patch]

   * improved a function of numbers.c [FreeBSD patch]

   * rep_file_fdopen has not been listed in librep.sym

   * added -tag=CC to libtool in several places

   * don't ignore $LDFLAGS upon build

   * dropped some useless code in sdbm.c

   * make sure inline is defined

0.17.1
======

   * started code-cleanup

   * added a .pc file

   * added -no-split to makeinfo [FreeBSD patch]

   * added -enable-paranoia to configure [compile with CFLAGS+="-Wall
     -ansi"]

   * updated the spec file

   * replaced a static void by a void in main.c [Debian patch]

   * use correct shebang in rep-xgettext.jl [ALT-Linux patch]

   * trim trailing / to mkdir(2) [NetBSD patch]

0.17
====

   * Added 'rep.ffi' module (Foreign Function Interface).  Uses gcc's
     libffi.  Very untested.

   * Partial implementation of guile's 'GH' interface.

   * Bug fixes:

        - Don't hang in select for a second when starting processes via
          the 'system' function (race condition that only seems to show
          up on Linux 2.6 kernels)

        - Miscellaneous fixes for Mac OS X.

        - Don't return a reversed list of items from the XML parser.
          (Alexander V. Nikolaev)

        - Fixes to string capitalization functions.  (Charles Stewart)

0.16
====

   * New modules 'rep.data.trie', 'rep.threads.proxy'

   * Also added 'rep.xml.reader' and 'rep.xml.printer', though these
     should probably be used with extreme caution

   * Appending to queues is now O(1) not O(n)

   * Many changes to 'rep.net.rpc' module, protocol is incompatible with
     previous version.  Should be more robust

   * 'rep.i18n.gettext' module exports the 'bindtextdomaincodeset'
     function (Christophe Fergeau)

   * Slightly more secure way of seeding the rng

   * 'inexact->exact' can now convert floating point numbers to
     rationals (though not optimally).  This means that 'numerator' and
     'denominator' also work better with floats now

   * New function 'file-ttyp'

   * Some random bug fixes

0.15
====

   * Parser can now associate lexical location (file name and line
     number) with parsed objects.  Added 'call-with-lexical-origins' and
     'lexical-origin' functions.  This adds memory overhead but is only
     enabled in interpreted mode, or other times it could be useful
     (e.g.  when compiling)

   * The compiler enables line-numbering, and uses the information when
     it prints errors.  It also prints errors in a more standard format
     (intended to mimic GCC), and distinguishes warnings from errors

   * Debugger is much improved, and supports emacs-style emission of
     line number tokens.  Use the included 'rep-debugger.el' elisp code
     to source-debug rep programs in Emacs!

   * New command line option '--debug'.  When given, rep starts up in
     the debugger

   * Reformatted backtrace output.  Also backtraces only ever include
     evaluated argument lists now.  They also include lexical
     information when possible

   * Syntax errors include error description and line number

   * Now supports weak reference objects.  New functions
     'make-weak-ref', 'weak-ref', 'weak-ref-set'.  A weak reference is a
     pointer to another object.  When that object is garbage collected,
     the pointer in the weak reference is set to false.

   * New 'error helper' module.  When an error is handled, this module
     is called and tries to print a human-understandable message
     explaining why the error may have occurred

   * REPL commands may now be specified by their shortest unique set of
     leading characters, e.g.  ',o' instead of ',open'

   * Added an '#undefined' value.  Returned by '%define' and the macros
     using it ('defun', 'defmacro', etc...)

   * New function 'table-size' in module 'rep.data.tables'

   * 'thread-suspend' returns true iff the timeout was reached (i.e.
     return false if 'thread-wake' was used to unsuspend the thread)

   * Objects defined using the 'object' macro now have an implicit
     'self' binding - the object representing their self (or their most
     derived self)

   * Added TIMEOUT parameter to 'condition-variable-wait' and
     'obtain-mutex' functions

   * New 'rep.threads.message-port' module, implements a simple message
     queue for threads

   * 'log' function now optionally accepts a second argument, the base
     of the logarithm

   * Use gmp to generate random numbers when possible (if at least
     version 3 of gmp is found) [disabled in librep 0.15.1 - gmp seems
     to be buggy?]

   * The 'string-replace' function may now be given a function as its
     TEMPLATE parameter

   * Bug fixes:

        - Signal an error if writes don't write all characters they were
          asked to.  Also, some functions could write fewer characters
          than they were supposed to even if no errors occurred

        - Remembered that file sizes may not fit in fixnums

        - Don't preserve trailing slashes in results of
          canonical-file-name (to make the path canonical)

        - Don't signal an error when end of file is encountered
          immediately after reading '#\X' syntax

        - 'current-thread' and 'all-threads' will create a thread object
          for the implicit thread if there isn't one already

        - In C subrs that take optional integer arguments, signal an
          error if the given value isn't an integer or undefined
          (false).  Also, accept all types of numbers where it makes
          sense to do so

        - Signal an error if end of file is read while parsing a block
          comment

        - Don't ever return a null object from 'current-time-string'

        - Catch errors signalled during command line option processing,
          and pass them to the standard error handler

        - Right hand side of 'letrec' bindings may now have more than
          one form

        - The 'object' macro now evaluates its BASE-OBJECT parameter
          exactly once

        - Finally removed 'define-value'

        - Ignore null lines (or lines which only have comments) in the
          repl

        - In the compiler, don't expand macros which have have been
          shadowed by local bindings

        - Don't print some compiler errors/warnings twice

        - Fixes for 'mips-compaq-nonstopux' architecture (Tom Bates)

        - Fixed ',reload' and ',unload' repl commands not to try to
          remove non-existent structures

0.14
====

   * New module 'rep.util.md5', has two functions for generating MD5
     message digests (of files or strings)

   * Changes to the 'rep.io.sockets' function:

     In the 'socket-server' function the HOST and/or PORT arguments may
     be false, meaning to listen on all addresses and to choose a random
     unused port.

     New functions 'socket-peer-address' and 'socket-peer-port', these
     always returns the details of the far end of the connetion.
     'socket-address' and 'socket-port' have been changed to always
     return the details of the local connection point.

   * New function in 'rep.system' module, 'crypt'.  A wrapper for the
     system's 'crypt' function (if it has one)

   * New function in 'rep.threads' mdoule, 'make-suspended-thread'

   * New module 'rep.net.rpc', provides a text-stream based RPC
     mechanism for Lisp programs.  Similar in some ways to untyped
     CORBA. (This is still in the experimental stage - its interface may
     change in forthcoming releases)

   * New functions in 'rep.data' module, 'list->vector' and
     'vector->list'

   * New macro 'define-special-variable'.  A combination of 'defvar' and
     'setq' - it always makes the variable special and it always sets it
     to the given value

   * New module 'rep.test.framework' implementing 'assert', 'check' and
     'test' macros.  This provides a framework for implementing unit
     tests in Lisp modules (such that running the interpreter with the
     '--check' option will run all tests that have been set up to be
     autoloaded

   * Bug fixes:

        - When reading from strings, don't choke on zero bytes

        - When writing into sockets, be aware that the socket is in
          non-blocking mode

        - SDBM and GDBM modules now close any open databases before the
          interpreter exits

        - Fixed the 'rep_parse_number' function not to require a
          terminating null character in the string when parsing bignums

        - Only define 'Qrep_lang_interpreter' once

        - Don't assign vm registers to physical registers on 68000
          architectures - it's been reported to crash

        - When running asynchronous subprocesses, open and initialize
          the pty slave before forking to avoid a race condition with
          the child process

        - Flush symbols from the module cache at another point

        - Fixes for Unixware

        - When compiling non-top-level 'defvar' forms, add any doc
          string they have to the database

0.13.5
======

   * Tar file handling no longer requires GNU tar

   * The 'defvar' special form can now take only a single argument

   * The reader now treats '#\return' characters as white space

   * Other miscellaneous bug fixes...

0.13.4
======

   * Don't restrict symbols exported from plugin libraries, some need to
     export symbols to work properly (this bug only seemed to appear on
     Solaris systems)

   * Added 'rep_file_type' and 'rep_guardian_type' to the list of
     symbols exported from librep

   * Fixed the 'install-aliases' script (Peter Teichman)

   * New module 'rep.threads.condition-variable'

   * Added 'string-split' and 'string-replace' to the gaol

0.13.3
======

   * Try to only export public symbols from 'librep.so' and modules

   * When expanding file names translate '/..' to '/'

   * Set an upper bound on the allowed recursion depth when regexp
     matching, prevents the stack from overflowing in pathological cases

   * Added optional second arg to 'readline' function, a function to
     call to generate completions.  The 'rl-completion-generator' method
     of supplying this function is deprecated

   * Fixed bugs when handling character-case in regexp module (Andrew
     Rodionoff)

   * Added an 'premature-end-of-stream' error.  This is signalled
     instead of 'end-of-stream' when reading characters in the middle of
     a syntax form.  The 'end-of-stream' error is only signalled when
     the end of the stream is reached before encountering anything other
     than whitespace characters

   * Fixed bug of expanding declarations in the 'define' macro expansion

0.13.2
======

   * Fix 'define' so that it tracks bound variables and ignores shadowed
     keywords when traversing code

   * Added checks to compilation process for the kind of missing
     shared-library problems that many people see

   * Fixed the 'install-aliases' shell script

   * New configure option: '--enable-full-name-terminator'

0.13.1
======

   * Added functions 'remove-if' and 'remove-if-not'

   * Various bug-fixes for non-linux or solaris systems (John H.
     Palmieri, Philippe Defert)

   * '#f', '#t', '#!optional', '#!key' and '#!rest' are now uninterned
     symbols.  Keywords are interned in a separate obarray

   * Fixed bug of caching regexps even when their string has been
     modified

   * Fixed some bugs in the ftp remote file handler and the 'pwd-prompt'
     function

   * Fixed 'define' to ignore 'structure' and 'define-structure' forms

0.13
====

   * The end-of-list / boolean-false object is no longer the symbol
     'nil'.  Instead there is a special object '()' fulfulling these two
     roles.  For modules importing the 'rep' module, the symbol 'nil'
     evaluates to '()'.  This allows the 'scheme' module to be more
     compliant with the Scheme standard

   * Parameter list changes:

        - Deprecated '&optional' and '&rest', in favour of '#!optional'
          and '#!rest'.

        - Added keyword parameters.  Use '#!key' to declare them.
          Keyword syntax is '#:PARAM'.  For example:

               ((lambda (#!key a b) (list a b)) #:b 2 #:a 1) => (1 2)

        - '#!optional' and '#!key' parameters may now have default
          values, syntax is '(VAR DEFAULT)'.  For example:

               ((lambda (#!optional (a 1)) a)) => 1

   * The module namespace is now hierarchical.  '.' characters in module
     names denote directory separators, e.g.  'foo.bar' translates to
     the file 'foo/bar'

     All module names prefixed with 'rep.' are reserved for librep,
     other top-level names should be picked to be as unique as possible

     The existing modules have been renamed to fit this scheme (see the
     file 'TREE' in the distribution for the hierarchy details).
     However, old module names will still work for the time being

   * The 'rep' module no longer includes the 'rep.regexp', 'rep.system',
     'rep.io.files', 'rep.io.processes' or 'rep.io.file-handlers'
     modules.  These need to be imported explicitly

   * Doc strings are now indexed by module name as well as symbol name.
     The 'define' macro now takes a doc string as its optional third
     parameter

   * Record constructors may include all lambda-list keywords (e.g.
     keywords and/or default values)

   * Incompatible virtual machine changes, hence bytecode files will
     need to be recompiled.  Improvements include:

        - Only heap-allocate variables when absolutely necessary

        - Closure analysis to allow inlining of some types of 'letrec'
          expressions

        - Added a 'safe' virtual machine, which makes no assumptions
          regarding validity of bytecode, so is safe for untrusted code

   * Added an 'unscheme' module.  Another Scheme implementation, but the
     goal of this one is to integrate cleanly with the librep runtime
     environment, even if this is at the expense of R4RS compliance

     For example, in 'unscheme' code, '#f => ()' and '#t => t'.  This
     allows rep and unscheme functions to call each other without
     needing to convert any data

   * By default, it is now illegal to modify top-level variables that
     have not previously been defined

   * New macro 'define-structures' to export multiple views of a single
     underlying environment

   * The librep runtime no longer handles the '--help' option itself,
     this should be done by scripts

   * Don't search '$LD_LIBRARY_PATH' for plugins, but prepend all
     directories in colon-separated '$REP_DL_LOAD_PATH' to
     'dl-load-path'.  Similarly, the contents of '$REP_LOAD_PATH' is
     prepended to 'rep-load-path'

   * '(/ X) => (/ 1 X)'

   * Extra string-manipulation functions: 'string-replace',
     'string-split' (in the 'rep.regexp' module)

   * '#f' and '#t' are now primitive symbols, not special objects

   * Special case tail-recursive calls to 'apply', to ensure they get
     eliminated

   * The '0x123' and '0123' read syntaxes have been deprecated, use
     '#x123' and '#o123' instead

   * '#| ... |#' comments now nest correctly

   * New modules: 'rep.i18n.gettext', 'rep.vm.safe-interpreter',
     'rep.vm.assembler', 'unscheme', 'rep.data.objects',
     'rep.www.quote-url', 'rep.www.fetch-url', 'rep.util.ispell',
     'rep.util.base64', 'rep.util.autoloader', 'rep.io.sockets',
     'rep.util.time', 'rep.net.domain-name'

   * Bug fixes, including:

        - Find size of 'long long' type on AIX, IRIX and Solaris (Dan
          McNichol, Albert Chin-A-Young)

        - Never allow macros to be called as functions

        - Make bitfields unsigned (Albert Chin-A-Young)

        - Fixed bounds-checking when parsing non-base-10 fixnums

        - Thread fixes (and much lower thread-switch latency in many
          cases)

        - Fixed 'DEFUN' macro for C++ (Matt Tucker); also fixed header
          files to avoid C++ keywords

        - Make error message for bytecode version mismatches more
          meaningful

        - Fixed: 'default-boundp', 'continuation-callable-p'

        - Only the evaluate the value of 'defvar' forms if the symbol
          isn't already bound

        - Compile else-less 'case' expressions correctly; eliminate
          tail-recursion in 'cond' forms when possible

        - Various fixes in 'scheme' module

0.12.4
======

   * Support building without GNU MP, '--without-gmp' option to
     configure.  Use 'long long' for non-fixnum integers (promote to
     floats when out of range); no exact rationals.  There's also an
     option to disable continuations/threading
     ('--disable-continuations')

   * Sanitized function inlining:

        - Use '(declare (inline NAMES...))' to tell the compiler that it
          might be useful to inline the named functions

        - Don't even think about inlining across module/file boundaries
          (for now anyway)

   * Cleaned up the 'gaol' module.  Interface is essentially:
     'gaol-define', 'gaol-define-special', 'gaol-define-file-handler'.
     Added 'gaol-open' to import complete modules.  Still supports old
     interface

   * Be a lot more efficient when printing quoted strings and symbol
     names (for some streams there used to be a system-call per
     character!)  Also, when quoting weird symbol names, be more
     intelligent

   * Removed code to autoload from modules (which didn't really work
     anyway)

   * Be more intelligent about deciding when to flush the module cache

   * Build fixes for IRIX (David Kaelbling)

   * Other miscellaneous bug-fixes and performance tweaks

0.12.3
======

   * New function 'thread-join', waits for a specified thread to exit,
     then returns the value of the last form it evaluated

   * Added a rudimentary profiler (',profile FORM' command in repl)

   * Reorganized 'ring' module, sanitized the interface (preserving
     compatibility with old functions), also added a 'ring->list'
     function

   * 'rplaca' and 'rplacd' (but not 'setcar' and 'setcdr') functions now
     return the cell being modified, not the value being stored into it,
     for compatibility with CL (Karl Hegbloom)

   * 'unwind-protect', 'catch', 'condition-case': these special forms
     are now macros

   * When signalling 'bad-arg' or 'missing-arg' errors, try to include
     the function as the first element of the error data

   * 'load' function now _only_ loads files without suffixes if
     NO-SUFFIX arg is non-'nil' (prevents picking up un-suffixed files
     by mistake, e.g.  from the current directory)

   * Fixed some bugs when reading rationals

   * Fixed bug of 'gettext' module not redefining '_' binding in 'rep'
     module

   * Fixed bug when building 'rep-config' script (Mark Hewitt, Dan
     Winship)

   * Fixed bug of 'rep_INTERN_SPECIAL' macro not looking for default
     values of special variables

   * Fixed interpreted versions of 'min' and 'max' when operating on
     non-numeric values

   * If unable to allocate heap space, just print an error and terminate
     the program (the low-memory handling doesn't currently work
     properly)

   * Fixed bug when extracting doc strings from 'define' forms

   * Fixed bug when compiling structure definitions in non-top-level
     environments

   * Fixed bug of being unable to 'load' empty files

   * When recursively macro-expanding, dereference identifiers in the
     correct module

0.12.2
======

   * The tar file-handler now caches the unpacked archive (wins big when
     loading sawfish themes)

   * The 'gaol' module can now create multiple gaols, each with it's own
     namespace

   * More performance tweaks

   * Miscellaneous bug-fixes (more vm stack smashing, 'defconst' never
     evaluates its constant)

0.12.1
======

   * Some virtual machine performance tweaks

   * Fixed nasty stack smashing bug (when using compiler declarations)

   * Some 64-bit cleanups (George Lebl)

   * Fixed non-ANSI C syntax (Sam Falkner)

0.12
====

   * Added a basic module system.

     Modelled after the Scheme48 system, but simpler.  At its simplest,
     include a 'define-structure' form in each file representing a
     module:

          (define-structure NAME INTERFACE CONFIG BODY...)

     The external definitions of this module can then be imported by
     other modules through their CONFIG statements, e.g.  '(open
     NAMES...)'.  Most modules will open 'rep' to get the standard
     language definitions.

     'foo#bar' reads as '(structure-ref foo bar)'

     The 'timers', 'tables', 'sdbm', 'gdbm', 'readline', 'gettext',
     'ring', 'mutex', 'memoize', 'lisp-doc', 'disassembler', 'compiler',
     'date', 'cgi-get', 'gaol' features are all now modules (this is
     backwards compatible, since modules may be imported using
     'require')

     See the "Modules" section of the manual for more details.

   * The repl now contains meta-commands for inspecting and configuring
     the module system (amongst other things)

   * Added a facility for creating new primitive types: 'make-datum',
     'datum-ref', 'datum-set', 'has-type-p', 'define-datum-printer'

   * Added an SRFI 9 compatible 'define-record-type' macro for defining
     data structures (the 'records' module)

   * Added fluid variables--a method of creating dynamically scoped
     bindings that fit well with lexically scoped definitions
     ('make-fluid', 'fluid', 'fluid-set', 'with-fluids', 'let-fluids')

   * Added a 'queues' module providing a basic queue type

   * Added stream functions: 'peek-char', 'input-stream-p',
     'output-stream-p'

   * Interpreter now also eliminates tail-calls

   * Changed handling of inexact numbers to be compatible with the
     Scheme standard:

        - Many operations now produce inexact outputs if any of their
          inputs are inexact (e.g.  'min', 'max', 'floor', 'ceiling',
          'round', 'truncate')

        - 'eql' and 'equal' no longer ignore exactness when comparing
          numbers.  '=', '/=', '<', '>', '<=' and '>=' _do_ ignore
          inexactness.  E.g.

               (eql 2 2.) => nil
               (= 2 2.) => t

   * Support most of Scheme's read-syntax for numbers (i.e.  '#b', '#o',
     '#d', '#x' radix prefixes, and '#e', '#i' exactness prefixes).

   * Implemented Scheme's 'string->number' and 'number->string'
     functions

   * Included a basic R4RS Scheme implementation (module: 'scheme').  Do
     ',new foo <RET> ,open scheme' to test it in the repl, use '(open
     scheme)' instead of '(open rep)' to use it within modules.

     The compiler also knows enough about Scheme to be able to compile
     it.  Also, use the '-s' or '--scheme' options to load a file of
     Scheme code.

   * The debugger works better (and can be used to walk the stack
     history somewhat)

   * Last arg of 'append' and 'nconc' may be a non-proper-list now

   * Implemented the Scheme 'do' macro for iteration

   * 'define' supports curried functions.  E.g.  '(define ((plus a) b)
     (+ a b))', then '(plus 1)' evaluates to the function that adds one
     to its argument.

   * Many performance improvements:

        - Allocates less memory (so garbage collects less often)

        - Much faster at bytecode-to-bytecode function calling

        - Much reduced VM overhead (when compiled with GCC)

   * Compiler improvements:

        - Supports the '(declare CLAUSES...)' form.  See the "Compiler
          Declarations" section of the manual for details on the actual
          declarations supported.

        - Is cleverer about detecting when to create new bindings when
          tail recursing, and when the old bindings can just be
          overwritten

        - Groks the module system, and the language of the module being
          compiled (so that it can compile both rep and Scheme code)

        - Splices bodies of top-level 'progn' and 'begin' forms
          themselves into the top-level (for when macros expand into
          multiple definitions)

        - Compiling already defined functions (or whole modules of
          functions) now (mostly) works

        - Coalesce and compile non-defining top-level forms

   * Many bug fixes (see ChangeLog files for details)

0.11.3
======

   * Fixed bug of throwing uninitialized errors when autoloading

   * Fixed bug of interpreting '(let () ...)' as a named let

0.11.2
======

   * Replaced many special forms by macros--'let', 'let*', 'function',
     'if', 'and', 'or', 'prog2', 'defmacro', 'defun', 'defconst',
     'define-value', 'setq-default'

   * 'let' now supports Scheme's named-let construct for iteration via
     tail recursion

   * Parse some standard Common Lisp and Scheme syntax: '#| ... |#'
     block comments, '#\C' or '#\NAME' characters (where NAME may be one
     of: 'space', 'newline', 'backspace', 'tab', 'linefeed', 'return',
     'page', 'rubout'), and '#(...)' vectors

   * When comparing symbols, compare their names as strings

   * Implemented Scheme's 'dynamic-wind' function

   * Fixed bug of sometimes evaluating function arguments in the
     environment of the callee not the caller

   * Fixed bug when calculating how long to sleep for when no threads
     are available

   * Fixed bugs in mutex implementation (Damon Anderson)

   * Work around bugs in Tru64 'RTLD_GLOBAL'; everything should work on
     Tru64 now (Aron Griffis)

   * Fixed bug of not saving current regexp state across continuations

0.11.1
======

   * The compiler now eliminates single-function tail calls (instead of
     leaving it to the virtual machine)

   * Updated to use libtool-1.3.4

   * Miscellaneous bug fixes and minor changes

0.11
====

   * Better support for numerical computing.  Now supports bignums,
     rational numbers (numerator and denominator are bignums), and
     floating point values as well as the original fixnums.  Many new
     numerical functions supporting these types.  Promotes and demotes
     hopefully as you'd expect (never demotes an inexact number to an
     exact number).  Tries to follow the Scheme numeric system as much
     as possible

   * Supports "guardian" objects through the 'make-guardian' function
     (as described in Dybvig's paper).  These are a clean mechanism for
     allowing the programmer to control when arbitrary lisp objects are
     finally deallocated.  Also added a new hook: 'after-gc-hook'

   * The default error handler can now be redefined.  If the variable
     'error-handler-function' contains a function then it will be called
     to handle the error, with arguments '(ERROR DATA)'.

   * New special form 'case', switches on a key value and sets of
     constants

   * New function 'call/cc' (also available through the alias
     'call-with-current-continuation').  Provides scheme-like
     continuation functions.  Special variables are now deep-bound to
     support this correctly

   * Supports "soft" preemptive threads using continuations and a
     general "barrier" mechanism (used either for restricting control
     flow, or for receiving notification when control passes across a
     barrier)

   * Parameter lists in lambda expressions now support improper lists,
     as in scheme.  E.g.  '(lambda (x . y) ...)'

   * Implements the scheme 'define' syntax, with support for inner
     definitions

   * The 'tables' plugin implements hash tables, with extensible hashing
     and comparison methods; supports both strongly and weakly keyed
     tables

   * Included a GDBM binding; DOC files are now stored in GDBM files
     (SDBM has limits on datum sizes)

   * 'put' and 'get' functions now use 'equal' to compare property names

   * Virtual machine / compiler improvements:

        - Variable references and mutations are classified by type:
          lexical bindings use (one-dimensional) lexically addressed
          instructions, global non-special bindings have their own
          instructions, everything else uses the original instructions.
          Similar classification when creating new bindings

        - Eliminate tail-recursive function calls wherever possible in
          compiled code (when the calling function has no dynamic state)

     Compiled lisp code will need to be rebuilt to run on the modified
     virtual machine.

   * When expanding macros, bind 'macro-environment' to the macro
     environment it was called with.  This allows macros to reliably
     expand inner macro uses

   * New hook 'before-exit-hook'.  Called immediately before exiting

   * 'rep-xgettext' now has an option '--c'.  This makes it output
     pseudo C code containing the string constants found

   * Fixed misfeature of interpreting filenames 'FOO//BAR' as '/BAR'.
     Contiguous path separators are now merged (i.e.  'FOO/BAR')

0.10
====

   * Updated support for dumping (freezing) lisp definitions to handle
     lisp-1 nature with closures.  Also now generates C code instead of
     assembler for portability; creates a plugin that may be loaded
     through the REP_DUMP_FILE environment variable

   * Plugin '.la' files may now contain rep-specific settings:
     'rep_open_globally=yes' and 'rep_requires='FEATURES...''

   * New function 'define-value'.  A combination of 'set' and 'defvar',
     but without implying dynamic scope

   * 'load' scans AFTER-LOAD-ALIST for plugins as well as lisp libraries

   * '(if t)' now evaluates to 'nil' not 't'

   * Fix regexp bug in matching simple non-greedy operators (Matt Krai)

   * Borrowed guile's bouncing parentheses for readline (Ceri Storey)

   * New C functions 'rep_load_environment' and 'rep_top_level_exit'

   * 'defvar' allows symbols to be redefined in protected environments
     if they haven't also been defined by unprotected environments

   * Detect GCC's with broken '__builtin_return_address' functions
     (George Lebl)

   * Try to use libc 'gettext' implementation, but only if it looks like
     it's the GNU implementation

0.9
===

   * Support for using GNU readline (give configure the
     '--with-readline' option)

   * New functions: 'letrec', 'caar', ..., 'cddr', 'caaar', ...,
     'cdddr', 'in-hook-p', 'make-variable-special'

   * Changed 'unless' to have the Common Lisp semantics--return 'nil'
     when the condition evaluates true, not the value of the condition

   * Fixed/added some compiler optimisations

   * Fixed 'rep-xgettext' script to remove duplicated strings and to
     search exhaustively

   * 'add-hook' forces the hook variable to be special (in case it
     wasn't declared using 'defvar')

0.8.1
=====

Fixed some documentation bugs; fixed some build problems

0.8
===

   * Default scoping is now lexical, only variables declared using
     'defvar' are dynamically scoped.

   * There is now only a single namespace for symbols (excepting
     property lists), this means that the 'fset', 'symbol-function' and
     'fboundp' functions have been removed

     This allows all elements in procedure-call forms to be evaluated
     equally (as in scheme), so things like:

          ((if t + -) 1 2)

     now work.  Related to this, function names (i.e.  symbols and
     lambda expressions) are no longer dereferenced by any operations
     taking functions as arguments.  Only built-in subroutines and
     closures are considered functions.

     This means that where before you'd write something like:

          (mapcar '+ '(1 2 3))

     this is now illegal; the '+' function must be evaluated:

          (mapcar + '(1 2 3))

   * 'lambda' is now a special form evaluating to a closure (as in
     scheme); this means that the following are exactly equivalent:

          (lambda (x) x) == (function (lambda (x) x)) == #'(lambda (x) x)

     An alternative method of enclosing a lambda expression is to use
     the 'make-closure' function.

   * 'gaol' module providing semi-safe environment for untrusted code to
     evaluate in

   * Support for i18n through 'gettext' module; also support for '%1$s'
     type format specifiers

   * New functions 'string-equal' and 'string-lessp'

0.7.1
=====

   * Added '--with-rep-prefix' option to autoconf AM_PATH_REP macro

   * Fixed bug when inserting a new timer before an existing timer

   * Fix the malloc tracking code

   * Fix dlmalloc for FreeBSD

   * Use install when installing, not cp

   * Some fixes for compiling with SUN's C compiler on Solaris

0.7
===

   * Added file handler for read-only access to the contents of tar
     archives, access files like 'foo.tar.gz#tar/bar'

   * 'process-id' function now returns pid of lisp interpreter when
     called with zero arguments

   * Added (untested) support for loading dynamic objects via 'shl_load'
     (HP-UX)

   * Added (untested) support for systems that prefix symbol names in
     dynamic objects with underscores

   * Fix bug when compiling 'last' function

   * Fix bug of not closing files in the 'load' function

0.6.2
=====

   * Added 'autoload-verbose' variable; set it to 'nil' to turn off the
     messages when autoloading

   * Fix problems when '--prefix' option has a trailing slash

   * Updated libtool files to version 1.3.3

   * Initial (incomplete) support for building under Tru64, from Aron
     Griffis

0.6.1
=====

No new features; minor portability tweaks and build changes.  Fix bug of
trying to load directories as Lisp scripts

0.6
===

   * Add 'unsetenv' function

   * 'system' now uses 'process-environment'

   * Workaround compiler bug with GCC 2.95 on sparc

   * Fix build problem where libsdbm.la can't be located

0.5
===

   * New function 'set-input-handler', registers an asynchronous input
     handler for a local file

   * Don't abort on receipt of unexpected 'SIGCHLD' signals

   * Upgrade libtool to version 1.2f

   * The 'rep' binary by default always loads a script named 'rep', not
     named by it's 'argv[0]' (this breaks under the newer libtool)

0.4
===

   * Sending a rep process a 'SIGUSR2' prints all debug buffers

   * Added '--with-value-type', and '--with-malloc-alignment' configure
     options.  Also added code to automatically detect the first of
     these options.

   * Fixed some 64-bit problems

   * Removed the difference between static and dynamic strings

0.3
===

   * New compiler command line option '--write-docs'

0.2
===

   * The variables 'error-mode' and 'interrupt-mode' control where
     errors and user-interrupts (i.e.  'SIGINT' signals) are handled.
     The three possible values are: 'top-level', 'exit' and 'nil'
     (denotes the current event loop).

   * Fixed bug where all dynamic types were erroneously 'symbolp'.

   * 'SIGINT', 'SIGHUP' and 'SIGTERM' signals should now be caught more
     successfully.

   * Added a new directory to 'dl-load-path': 'LIBEXECDIR/rep/ARCH' to
     contain third-party shared libraries.

0.1
===

First public release.