
6 December 1997
===============

User visible changes
--------------------

* Fixed a bug which could cause a crash when Ctrl-C was pressed during heap
  allocation on i386.

Other modifications
-------------------

* The implementation notes now also exist in HTML format.


25 September 1997
=================

User visible changes
--------------------

* X3J13 vote <53> is implemented: DEFSTRUCT BOA constructors can have &KEY
  arguments.

* X3J13 vote <40> is partially implemented: New variable *READ-EVAL*.

* X3J13 vote <150> is implemented: (READTABLE-CASE readtable) can now have
  the value :INVERT.

* MAKE-PACKAGE and IN-PACKAGE accept a keyword argument :CASE-SENSITIVE.
  Similarly, DEFPACKAGE accepts an option :CASE-SENSITIVE. When its value is
  non-NIL, the package will be case sensitive, i.e. the reader will not
  case-convert symbol names before looking them up or creating them in this
  package. The package names are still subject to (READTABLE-CASE *READTABLE*),
  though.

* X3J13 vote <157> is implemented: ROOM accepts an optional argument with
  default value :DEFAULT.

* New macro SPACE. (SPACE form) evaluates form and prints information about
  the memory allocations caused by this evaluation.

* The spanish translation is now 100% complete. Thanks to Carlos Linares.

* DESCRIBE of a structure now displays the structure's slots.

* The reader now accepts the syntax #\^A ... #\^Z for the ASCII control
  characters.

* Fixed a CLOS bug: &ALLOW-OTHER-KEYS in lambda lists of INITIALIZE-INSTANCE
  now disables the validity checking of corresponding MAKE-INSTANCE calls.
  Thanks to Matthias Lindner <matthias@intellektik.informatik.th-darmstadt.de>.

* Fixed a bug: The type REAL is now accepted as a declaration specifier.

* Fixed a bug: When using GNU gettext, the LOCALIZED function always returned
  the value corresponding to language ENGLISH, and the interactive conflict
  resolution of some IMPORT/EXPORT package operations aborted with an internal
  error.

* Fixed a bug in the foreign function interface: call-ins didn't work on
  some platforms.
  Thanks to Matthias Lindner <matthias@intellektik.informatik.th-darmstadt.de>.

* Fixed a bug: Calling the function SOCKET-SERVICE-PORT with a non-string
  argument caused a crash.

* Fixed two bugs which could cause a crash when a GC occurred during an
  IN-PACKAGE or during a pathname operation (DOS, OS/2, Win32 versions only).

* Added image support to the clx/new-clx module.
  Thanks to Gilbert Baumann <gilbert@ma2s2.mathematik.uni-karlsruhe.de>.

Portability
-----------

* More Win32 support: stack overflow handling, foreign function interface,
  more robust memory management.

* Added support for Win32 (WinNT and Win95), using Borland C++.

* Fixed a compilation error when compiling for sparcv8.
  Thanks to Hans Adams <adamsh@server.ecomp.de>.

* Updated support for Solaris/x86.
  Thanks to Lutz Euler <euler@lavielle.com>.

Other modifications
-------------------

* Reduced the number of conses allocated by calling APPLY on a function with
  both &KEY and &REST.
  Thanks to Jörg Höhle.

* The CLX documentation can now be viewed in ghostview.
  Thanks to Karl M. Hegbloom <karlheg@inetarena.com>.


7 August 1997
=============

User visible changes
--------------------

* Two new add-on modules:
    clx/new-clx: Fast Common Lisp to X11 interface. Written by
                 Gilbert Baumann <gilbert@ma2s2.mathematik.uni-karlsruhe.de>.
    clx/mit-clx: Classical Common Lisp to X11 interface.

* (DRIBBLE filename) now appends to the given file instead of overwriting it.

* Fixed a bug: Platform dependent constants are not inlined in .fas files any
  more.

* Fixed a bug: Binding *PRINT-PRETTY* to NIL inside a PRINT-OBJECT method or
  inside a structure's print-function could result in undefined behaviour.
  Thanks to Don Cohen <don@nichimen.com>.

* Fixed a bug: For x a float, (= 0 x) and (EQUALP 0 x) could result in
  undefined behaviour.
  Thanks to Don Cohen <don@nichimen.com>.

* Fixed a bug: The error message issued by CHECK-TYPE was wrong.

* Fixed a bug: Calling (DRIBBLE pathname) after (DRIBBLE) didn't work.
  Thanks to Art Nuzzo <artn@bs724.comm.mot.com>.

* Fixed a bug: The WITH-STANDARD-IO-SYNTAX macro caused *PACKAGE* to be bound
  to a invalid value.

* Fixed two bugs in the GC (one in the generational GC, one in the
  non-generational GC).
  Big thanks to Marcus Daniels.

* Fixed a bug: Printing socket streams created by SOCKET-ACCEPT could result
  in an error or an endless loop.

Portability
-----------

* Added support for Win32 (WinNT and Win95), using Microsoft Visual C++.

* Added support for Cygwin32 version 18 (Unix emulation on WinNT or Win95).

* Added support for GNU 0.2 (the Hurd). Thanks to Marcus Daniels.

Other modifications
-------------------

* "clisp" can now be called with "-" as argument. The standard input is then
  executed by a read-eval-print loop without prompt, while the remaining
  arguments will be assigned to the variable *ARGS*.

* Overall speedup by 13% on i386.


3 May 1997
==========

User visible changes
--------------------

* X3J13 vote <182> is now fully implemented: A LET/LET*/COMPILER-LET binding
  specification may now be a list of length 1, without initial value.
  Thanks to Gilbert Baumann <gilbert@ma2s2.mathematik.uni-karlsruhe.de>.

* X3J13 vote <78> is now fully implemented: FLET, LABELS, MACROLET establish
  an implicit BLOCK.

* X3J13 vote <100> is implemented: Hash tables with test function EQUALP.

* X3J13 vote <131> is partially implemented: #P reader macro for pathnames.

* The MULTIPLE-VALUE-BIND macro no longer allows lists as variable
  specifications, only symbols.
  Thanks to Gilbert Baumann <gilbert@ma2s2.mathematik.uni-karlsruhe.de>.

* DEFCLASS which changes a class is now allowed and generates a warning.
  Since UPDATE-INSTANCE-FOR-REDEFINED-CLASS is not supported, it is your
  responsibility to not use the old instances afterwards.
  Suggested by Brian Dennis <xjam@CS.Berkeley.EDU> and Tobias Kunze
  <tkunze@cmsgia.Stanford.EDU>.

* The TIME macro now outputs to *TRACE-OUTPUT* instead of *STANDARD-OUTPUT*.
  Thanks to Nathan Sidwell <nathan@bristol.st.com>.

* When the argument of the function TRANSLATE-LOGICAL-PATHNAME is a string,
  it is now interpreted as a logical pathname string. Previously, it was
  coerced to a pathname through the function PATHNAME, yielding a physical
  pathname.

* CLISP now supports more than the three predefined user-interface languages.
  New macros DEFLANGUAGE, DEFINTERNATIONAL, DEFLOCALIZED. New function
  LOCALIZED. The macros ENGLISH, DEUTSCH, FRANCAIS now work only for strings.
  Removed the macro LANGUAGE-CASE.
  The implementation uses the GNU gettext library. Thanks to Ulrich Drepper
  and Marcus Daniels.

* New user-interface language ESPANOL.
  Thanks to Carlos Linares López <clinares@delicias.dia.fi.upm.es> who has
  translated about 55% of CLISP's messages to Spanish.

* EQUALP now descends structures (but not CLOS instances!) on all platforms,
  as requested by X3J13 vote <71>.

* The EXIT-ON-ERROR macro now also exits when a Ctrl-C interrupt occurs.
  Thanks to Roger Kehr <kehr@iti.informatik.th-darmstadt.de>.

* The initial value of *LOAD-PATHS* on Unix is now (#"./" "~/lisp/**/")
  instead of (#"./" #"./**/" "~/**/"). To be customized in config.lsp.

* New variable *LOAD-COMPILING*, which provides the default value for the
  :COMPILING keyword of function LOAD. The initial value of *LOAD-COMPILING*
  can be specified by a command line option.

* Fixed a bug: (VALUES-LIST '()) often returned one value.
  Thanks to Gilbert Baumann <gilbert@ma2s2.mathematik.uni-karlsruhe.de>.

* Fixed a bug in the compiler: When optimizing (OR T form), the compiler
  could abort with an error message.
  Thanks to Nathan Sidwell <nathan@bristol.st.com>.

* Fixed a bug in the DEFSTRUCT macro which caused the compiler to issue
  an error message when compiling a structure definition containing a slot
  with a constant, non-NIL initializer.
  Thanks to Matthias Lindner <lindner@forwiss.uni-erlangen.de>.

* Fixed a bug in the DEFCLASS macro which caused DEFCLASS and DEFINE-CONDITION
  to reject the :DOCUMENTATION class option.
  Thanks to Don Cohen <donc@isi.edu>.

* Fixed a bug: The use of type specifiers of the form
  (FUNCTION argument-types result-type)
  within THE, ETHE, LOOP and DEFSTRUCT forms could lead to errors.
  Thanks to Marty Shannon <mshannon@i-2000.com>.

* Fixed two bugs in the DRIBBLE function: After calling (DRIBBLE pathname)
  followed by (DRIBBLE), *DEBUG-IO* referred to an unwritable stream.
  Calling (DRIBBLE pathname) from within a break loop caused some of the
  output to be logged twice.

* Fixed a bug in the expansion of deeply nested backquotes.
  Thanks to S. Wotherspoon <spoon@hilbert.maths.utas.edu.au>.

* Fixed a bug in the LOOP macro: Stepping for FOR-AS-= clauses
  (LOOP ... {FOR|AS} var = form1 THEN form2 ...) could be executed in the
  wrong order if form1 is constant and form2 is non-constant.
  Thanks to Russell Senior <seniorr@teleport.com>.

* Fixed a bug in /= : When called with more than two arguments, only the
  first two arguments were compared; the remaining arguments were ignored.
  Thanks to J. V. Needham <jv@rdk840.dfci.harvard.edu>.

* Fixed a bug in EQUAL and EQUALP: displaced strings were not compared
  correctly.

* Fixed a bug in EXPT: For x a (COMPLEX RATIONAL) and y = m/2^n, (EXPT X Y)
  actually returned x ^ (m/2^(n+32)) instead of x ^ (m/2^n).

* Fixed a bug in TRUENAME on Unix: If "aa.bb" is a symbolic link to "cc",
  (TRUENAME "aa.bb") returned "cc.bb" instead of "cc".

* Fixed a bug in the management of add-on modules: On some platforms,
  GC in memory images containing add-on modules always crashed.

* Fixed a bug in the generational GC on i386, rs6000, alpha: In some cases,
  FFI objects in memory could cause the first "small" garbage collection to
  fail.
  Thanks to Dr. Werner Fink <werner@suse.de>.

* Fixed a bug in the printing routine for SOCKET-SERVER objects.
  Thanks to Alexey Goldin <goldin@spot.uchicago.edu> and Marcus Daniels.

Portability
-----------

* The core of CLISP can now be compiled with a C++ compiler if no C compiler
  is available (without readline library, FFI or modules).

* Added support for Mips processors in 64-bit mode.

* Updated support for Linux 2.0.

* Support for immutable objects now works on Linux/ELF. It did already work
  on Linux/a.out.

* Updated Amiga support. Thanks to Jörg Höhle <Joerg.Hoehle@gmd.de>.

* Updated Acorn support. Thanks to Peter Burwood <clisp@arcangel.dircon.co.uk>.

* Updated OS/2 support. Thanks to Jörg Diederich <J_Diederich@herlab.ruhr.de>.

* Updated support for Solaris/x86. Thanks to Marty Shannon <mjs@tiaa-cref.org>.

* Fixed a bug which could cause the readline completion to dump core on HP-UX.

* Fixed a bug relating to the read-eval-print loop's return point on some
  platforms. Thanks to Peter Burwood <clisp@arcangel.dircon.co.uk>.

* Removed an incompatibility between SPARC/Sun4 and UltraSPARC memory images.
  Found by Martin Ginkel <ginkel@iik.cs.uni-magdeburg.de>.

* Removed support for AmigaOS versions < 2.04.

Other modifications
-------------------

* New "makemake" option --with-wide causes normal and wide-mode binaries to
  be built and distributed simultaneously. New command-line option -W
  for choosing the wide-mode binaries instead of the normal binaries.

* On Unix, "clisp" is now an executable instead of a shell script.

* "clisp" can now be called with a Lisp file as argument. The remaining
  arguments will be passed to the Lisp program in the variable *ARGS*.
  On Unix, you can thus make Lisp programs executable by putting
  "#!/usr/local/bin/clisp" in the first line and doing a "chmod a+x".

* The read-eval-print loop now calls FORCE-OUTPUT after outputting the prompt.
  Thanks to Jörg Höhle <Joerg.Hoehle@gmd.de>.

* Support for immutable objects now also works in the WIDE tagging scheme.

* Reduced the startup time by 20-30%.


21 July 1996
============

Important note
--------------

* Changed bytecode format. All .fas files generated by previous CLISP versions
  are invalid and must be recompiled.

User visible changes
--------------------

* X3J13 vote <72> is conditionally implemented: Objects other than symbols,
  lists, numbers, characters, string, bit-vectors are now self-evaluating if
  *PACKAGE* uses the COMMON-LISP package.

* The package CLOS is now among the default use list of a new package.
  (USE-PACKAGE "CLOS") is not needed any more. To use PCL, you now need
  to (UNUSE-PACKAGE "CLOS") explicitly.

* The bytecode format is now platform independent. As a consequence,
  compiled functions can be printed readably when *PRINT-READABLY* = T.

* Built-in function objects (SUBRs) are now printed readably when
  *PRINT-READABLY* = T, instead of signalling an error.

* Added a <c-type>, C-PTR-NULL to the FFI.  C-PTR-NULL will convert
  NIL objects into NULL pointers (so that type conflicts can be avoided).

* Socket streams are implemented. New functions SOCKET-SERVER,
  SOCKET-SERVER-CLOSE, SOCKET-SERVER-PORT, SOCKET-WAIT, SOCKET-ACCEPT,
  SOCKET-CONNECT, SOCKET-STREAM-HOST, SOCKET-STREAM-PORT, SOCKET-SERVICE-PORT,
  SOCKET-STREAM-PEER-HOST. See impnotes.txt for details.
  Thanks to Marcus Daniels <marcus@sysc.pdx.edu> and
  Marco Ramoni <M.Ramoni@open.ac.uk>.

* Pipe streams now support binary I/O.

* MAKE-INSTANCE now also works for DEFSTRUCT classes, and DEFSTRUCT classes
  can now be subclassed via DEFCLASS with option :METACLASS STRUCTURE-CLASS.
  Suggested by Manuel Kolp <kolp@qant.ucl.ac.be>.

* User defined methods on NO-APPLICABLE-METHOD now have a chance for a
  corrective action. Thanks to Mark Thomas <thommark@access.digex.net>.

* APROPOS and DESCRIBE now tell you about symbols which name a type or class.

* During directory search, symbolic link loops are now ignored instead
  of resulting in an error. Thanks to Dan Stanger.

* Fixed a CLOS bug: REMOVE-METHOD didn't work. 
  Thanks to Roger Kehr <kehr@iti.informatik.th-darmstadt.de>.

* Fixed a bug in the compiler: A (MULTIPLE-VALUE-SETQ vars valform)
  or (MULTIPLE-VALUE-BIND vars valform ...) form was miscompiled if
  valform is known to produce a single value.
  Thanks to Paul Graham <pg@das.harvard.edu>.  

* Fixed at least two bugs in the LOOP macro: FOR-AS-ACROSS clauses could
  result in AREF signalling an out-of-bounds error at the end of the vector.
  Initialisations for FOR-AS-= clauses could be executed in the wrong order.

* Fixed a bug: the functions ENCODE-UNIVERSAL-TIME and DECODE-UNIVERSAL-TIME
  computed a wrong DST flag for time values between (T - 2h) and T, where
  T denotes a DST switch time.

* Fixed two bugs in the foreign function interface: multi-dimensional arrays
  and floating point numbers with value 0.0 were not correctly passed from
  "foreign land" to "Lisp land". Thanks to Ken Olum <kdo@mit.edu>.

* Fixed a bug in the foreign function interface: call-ins which return
  structures or unions would not compile correctly. Thanks to Michael Stoll.

* Fixed a bug: On Solaris, the function SYSTEM sometimes reported exit
  status 0 although the command had failed.
  Thanks to Brian F. Dennis <xjam@cs.Berkeley.edu>.

* Fixed a bug: LOGTEST didn't work correctly if both arguments were bignums.

* Fixed a bug in the floating point number printing routine:
  In rare cases, a number was printed with more digits than necessary
  (without, however, violating the print-read consistency). For example,
  2.1416s29 printed as 2.14159s29, and 3.002618f-31 printed as 3.0026179f-31.

* Fixed a bug in ATAN: (ATAN y 0) with y < 0 returned pi/2 instead of -pi/2.

* Fixed a bug in XGCD which caused the results to be wrong with a small
  probability, for example in the case (XGCD 77874422 32223899).

Portability
-----------

* FreeBSD/NetBSD patches and compilation notes.
  Thanks to Douglas Crosher <dtc@stan.xx.swin.oz.au>.

* Added support for SUNWspro cc 3.0.1 on Sparc.

* Updated support for Ultrix.

* Updated support for NeXTstep version 3.3.
  Thanks to Robert Murphy <robert.murphy@yale.edu>.

* Updated support for SINIX. Thanks to Michael Becker <mb12@coconet.de>.

* Fixed a bug in the conversion of double-float numbers from "foreign land"
  to "Lisp land" on DEC Alpha. Thanks to Ken Olum <kdo@mit.edu>.

* Fixed a bug in the implementation of LISTEN on Irix: CLISP went into a
  `function call not implemented' OS error loop. Thanks to Marcus Daniels.

* Fixed a signal handling bug on some versions of SunOS 4: Strange things
  could happen in a break loop.

* The `configure' script now supports the --srcdir, --prefix and --exec-prefix
  options.

* Removed support for Atari ST/TT running TOS.

Other modifications
-------------------

* The compiler now recognizes more function calls as inlinable: Cases like
  (FUNCALL (LAMBDA ...) ...), (DECLAIM (INLINE F)) (MAPCAR #'F ...)
  are now compiled as inline function calls. Previously you had to write
  (FUNCTION (LAMBDA ...)) explicitly. Suggested by Jörg Höhle.

* "makemake" now supports the --srcdir, --prefix and --exec-prefix options.

* Added a testsuite for part of CLOS. Thanks to Christian Jullien.

* Miscellaneous documentation updates.


23 June 1995
============

Important note
--------------

* Changed bytecode format. All .fas files generated by previous CLISP versions
  are invalid and must be recompiled.

User visible changes
--------------------

* X3J13 vote <106> is implemented: LAST has an optional argument. Thanks to
  Pierpaolo Bernardi.

* X3J13 vote <87> is implemented: New function COMPLEMENT. Thanks to Pierpaolo
  Bernardi.

* X3J13 vote <40> is partially implemented: New macro WITH-STANDARD-IO-SYNTAX.
  Thanks to Pierpaolo Bernardi.

* X3J13 vote <98> is partially implemented: New macro WITH-HASH-TABLE-ITERATOR.
  Thanks to Pierpaolo Bernardi.

* X3J13 vote <97> is implemented: New functions HASH-TABLE-REHASH-SIZE,
  HASH-TABLE-REHASH-THRESHOLD, HASH-TABLE-SIZE, HASH-TABLE-TEST.
  Thanks to Pierpaolo Bernardi.

* X3J13 votes <69> and <70> are implemented: New declaration DYNAMIC-EXTENT.

* The dpANS macro LAMBDA is implemented.

* The dpANS declaration IGNORABLE is implemented.

* The dpANS function CONSTANTLY is implemented. Thanks to Pierpaolo Bernardi.

* Better syntax checking for the CASE macro. Thanks to Pierpaolo Bernardi.

* The user interface language may be chosen through the environment variable
  LANG as well.

* The pretty printer now indents lists spanning more than one line by two
  spaces, instead of one. New variable *PRINT-INDENT-LISTS*.

* *PRINT-PRETTY* is now initially T.

* Foreign function interface: New foreign type constructor FFI:C-ARRAY-MAX,
  implements zero-terminated arrays of bounded size.

* On Unix, 8-bit characters are legal in pathnames if the operating system
  accepts them.

* On DOS, #\Newline is converted to CR/LF when doing character output to
  unbuffered file streams (referring to special files).

* Fixed a bug in the interpreter and compiler: A MULTIPLE-VALUE-SETQ form
  which assigns to a symbol macro expanded to a wrong form; compiling it
  produced a warning. Thanks to Pierpaolo Bernardi.

* Fixed a bug in the compiler: Some CASE form with duplicate keys, when
  compiled, chose the wrong clause to be executed. Thanks to Pierpaolo
  Bernardi.

* Fixed a bug in the #+/#- reader macros. (LIST #+FOO #-BAR 1 2 3) now returns
  (2 3), not (3).

* Fixed a bug in LOG: (LOG x^n x^m), where n, m are integers, |m| > 1, and
  x is a rational number /= 1, now correctly returns n/m. Previously,
  (LOG 2 4) returned 1/0.

* Fixed a CLOS bug: Using the :DOCUMENTATION option in DEFGENERIC declarations
  for function names of the form (SETF symbol) signalled an error. Thanks to
  Pierpaolo Bernardi.

* Fixed a bug in DEFSETF: An IGNORE declaration for the store variable had
  no effect. Thanks to Pierpaolo Bernardi.

Portability
-----------

* Added support for Linux/ELF. Thanks to Marcus Daniels.

* Added support for Solaris/x86. Thanks to Marty Shannon.

* On Solaris, LISTEN and READ-CHAR-NO-HANG did not work on the terminal stream
  if standard input was redirected to come from a file.

* On OS/2, consider the virtual directory \PIPE\ as existent.

Other modifications
-------------------

* A couple of bug fixes and new functions in the STDWIN package. Thanks to
  Pierpaolo Bernardi.

* The structure of external modules has changed a bit.

* Miscellaneous documentation updates.


25 April 1995
=============

User visible changes
--------------------

* Michael Stoll has written a graphical user interface for CLISP under
  NeXTstep.

* Added a foreign language module WILDCARD for wildcard matching.

* Added a foreign language module REGEXP for Unix-style regular expression
  matching and searching.

* X3J13 vote <94> is implemented: Calling GENSYM has no side effects except
  incrementing the counter. New variable *GENSYM-COUNTER*.

* New macro FORMATTER converts a FORMAT control string to a function.

* Some FORMAT fixes:
  + X3J13 vote <81> is implemented: The FORMAT ~:^ directive is more useful.
    Warning: Old style "~:^" directives need to be converted to "~#:^".
  + X3J13 vote <82> is implemented: The FORMAT ~D, ~B, ~O, ~X, ~R directives
    accept an optional comma-interval parameter.
  + X3J13 vote <84> is implemented: FORMAT ~C outputs characters with no bits
    as if by WRITE-CHAR.
  + Handling of ~^ within the FORMAT ~? directive.

* X3J13 vote <167> is implemented: New types FILE-STREAM, SYNONYM-STREAM,
  BROADCAST-STREAM, CONCATENATED-STREAM, TWO-WAY-STREAM, ECHO-STREAM,
  STRING-STREAM. New functions OPEN-STREAM-P, SYNONYM-STREAM-SYMBOL,
  BROADCAST-STREAM-STREAMS, CONCATENATED-STREAM-STREAMS,
  TWO-WAY-STREAM-INPUT-STREAM, TWO-WAY-STREAM-OUTPUT-STREAM,
  ECHO-STREAM-INPUT-STREAM, ECHO-STREAM-OUTPUT-STREAM.

* New condition type PRINT-NOT-READABLE.
  New function PRINT-NOT-READABLE-OBJECT.

* New function FINALIZE. (FINALIZE object function) has the effect that
  function will be called when object is being garbage collected.

* DRIBBLE now also redirects *ERROR-OUTPUT*, *TRACE-OUTPUT*, *QUERY-IO*,
  *DEBUG-IO* if they refer to *TERMINAL-IO*.

* Calling SYMBOL-VALUE on a symbol defined as global symbol macro now returns
  the value of the expansion. New function SYMBOL-MACRO-EXPAND.

* Add FFI to the *FEATURES* if the foreign language interface is present.

* Fixed a bug: An IGNORE declaration for a macro's &ENVIRONMENT argument now
  has an effect.

* Fixed a couple of bugs in the foreign language interface: Passing zero size
  arrays did not work, parameters with mode :OUT did not work on SPARC and
  HP-PA, and some error messages were deficient.

* Fixed a bogus error message in SET-DISPATCH-MACRO-CHARACTER.

Portability
-----------

* Fixed a couple of building problems relating to the foreign language
  interface (missing `mark_fp_invalid' and `pr_hex8', missing makefile
  dependencies, support for --with-dynamic-modules, warnings when compiling
  user2.lsp and foreign1.lsp).

* Fixed a building problem: Not all C compilers accept casts in constant
  expressions used as initializers, e.g. gcc-2.5.8.

* Foreign function interface: Fixed a couple of possible bugs in the low-level
  foreign function call routine for i386/486/586, m680x0, SPARC CPUs. Thanks
  to Jörg Höhle.

* Small fixes for SCO.

* Added a utility "hln" for making hard links. Needed for "make distrib";
  Solaris "ln" does not make a hard link if a symbolic link is involved.

* On some Unix systems, use "uname -m", not "arch", to determine
  (MACHINE-TYPE) and (MACHINE-VERSION).

* More support for BSDI 1.0, AIX, HP-UX, Solaris.

* Changed STDWIN so that it compiles under X11R6.

Other modifications
-------------------

* Speed up compiled calls to FORMAT with literal control string by use of
  FORMATTER.

* Miscellaneous documentation updates.


4 April 1995
============

User visible changes
--------------------

* The initial value of *PACKAGE* can be specified by a command line option.

* X3J13 vote <6> is implemented: New place ROW-MAJOR-AREF.

* X3J13 vote <126> is implemented: New function DELETE-PACKAGE.

* X3J13 vote <14> is implemented: Closing a synonym stream does not close
  its constituent stream.

* Foreign language interface for C and ANSI C. New package FFI. New macros
  FFI:DEF-C-TYPE, FFI:DEF-C-VAR, FFI:DEF-C-CALL-OUT, FFI:DEF-C-CALL-IN,
  FFI:DEF-C-ENUM, FFI:DEF-C-STRUCT, FFI:DEF-CALL-OUT, FFI:DEF-CALL-IN,
  FFI:ELEMENT, FFI:DEREF, FFI:SLOT, FFI:CAST, FFI:TYPEOF, FFI:SIZEOF,
  FFI:BITSIZEOF.
  This currently works only on Unix and only with the CPUs
  i386/486/586, m680x0, Mips, SPARC, DEC Alpha, HP-PA, RS/6000.
  Warning: (COMPILE-FILE "filename.lsp") now overwrites the file "filename.c".

* New macros MUFFLE-CERRORS and APPEASE-CERRORS. During their execution,
  continuable errors are handled by the function CONTINUE. MUFFLE-CERRORS
  does this silently, APPEASE-CERRORS prints the error as a warning.

* New macro EXIT-ON-ERROR. During its execution, non-continuable errors
  cause CLISP to exit with error status.

* The function ED, when asked to edit a non-existent file, now creates that
  file instead of signalling an error.

* When a non-absolute pathname is specified for the -o command line option
  (destination file of a compilation), it is interpreted as relative to the
  current directory, not relative to the source file of the compilation.

* The readline library now uses the last column of the screen if the terminal
  is an xterm, for example. Work done by Chet Ramey.

* Fixed two bugs in the LOOP macro: FOR-AS-ACROSS clauses could result in AREF
  signalling an out-of-bounds error at the end of the vector. Initialisations
  for FOR-AS-= clauses could be executed in the wrong order.

* Fixed a bug in the compiler which caused LOAD-TIME-VALUE forms to be
  evaluated at compile time.

* Fixed a bug in the debugger: Choosing a restart Rnnn always invoked the
  last restart listed, not the chosen one.

* Fixed a bug: (CLOSE *TERMINAL-IO*) signals an error again.

* On DOS and OS/2, the Lisp reader now treats Ctrl-Z as whitespace.

* The -I command line option now tells the readline library to handle the Tab
  character as normal self-inserting character.

* Unix version only: DISASSEMBLE can display machine instructions, provided
  that GNU gdb is present.

Portability
-----------

* Updated support for EMX.

* Fixed a bug which caused a preprocessor error on SunOS and OSF/1.

* Small fixes for Sinix and SCO.

* Removed support for Coherent.

Other modifications
-------------------

* Generational garbage collection now also works on IRIX 5.2.

* Generational garbage collection and support for immutable objects don't
  exclude each other any more.

* Speed up the bytecode interpreter by about 2%.

* Miscellaneous documentation updates.


1 January 1995
==============

CLISP now compiles and runs on
* microcomputers:
  * DOS
  * OS/2 2.0
  * MS Windows 3.1
  * Amiga 500-4000, Amiga OS
  * Atari ST/TT, TOS
  * Acorn ARM Risc PC, RISC OS
* Unix workstations:
  * PC, Linux
  * PC, USL SVR4
  * DEC Alpha AXP, OSF/1
  * Sun4, SunOS 4 or 5
  * HP9000/800, HP-UX
  * NeXT, NeXTstep 3.1
  * PC, NeXTstep 3.2
  * SGI Mips, Irix 4 or 5
  * SNI Mips, USL SVR4
  * DECstation 5000, Ultrix 4.2
  * IBM RS/6000, AIX 3.2
  * M88000
  * Sun386, SunOS 4
  * Sun3, SunOS 4 (?)
  * HP9000/300, HP-UX or NetBSD
  * Apple MacII, A/UX (?)
  * Amiga 3000, Amiga Unix 2.1
  * Sequent PTX
  * PC, 386BSD or NetBSD or BSDI/386
  * PC, UnixWare
  * PC, SCO (?)
  * PC, Coherent 4.0
  * Convex, ConvexOS
  * Atari ST/TT, MiNT

Generational GC works on
  * PC, Linux
  * Sun4, SunOS 4 or 5
  * NeXT, NeXTstep 3.1
  * PC, NeXTstep 3.2
  * DEC Alpha AXP, OSF/1 3.0


1 January 1995
==============

Important note
--------------

* Changed bytecode format. All .fas files generated by previous CLISP versions
  are invalid and must be recompiled.

User visible changes
--------------------

* The destination file of a compilation can be specified by a command line
  option.

* X3J13 vote <152> is implemented: REDUCE has a keyword argument :KEY.

* The printed representation of file streams of element type STRING-CHAR now
  contains a line number.

* Fixed a bug which caused the interpreter to signal an error when evaluating
  nested DEFUNs.

* Fixed a bug which could cause a crash when a GC occurred during single or
  double float subtraction.

Portability
-----------

* More support for Acorn ARM running RISCOS. Thanks to Peter Burwood.

* Fixed a problem in the readline library on non-POSIX BSD systems: Only LF
  was output instead of CR/LF.

* Updated support for EMX.

* The `configure' script now caches its results.

Other modifications
-------------------

* New memory model TRIVIALMAP_MEMORY which supports generational garbage
  collection in combination with the WIDE tagging scheme.

* Generational garbage collection now also works on NeXTstep and OSF/1 3.0.

* When a memory image is loaded, the terminal stream from the previous
  session is closed.

* Renamed `target' to `configure'.

* Added a manual page in HTML format.

* Miscellaneous documentation updates.


26 October 1994
===============

Important note
--------------

* Changed bytecode format. All .fas files generated by previous CLISP versions
  are invalid and must be recompiled.

User visible changes
--------------------

* X3J13 vote <77> is implemented: CL:FLET, CL:LABELS, CL:MACROLET allow
  declarations.

* X3J13 vote <78> is implemented: CL:FLET, CL:LABELS, CL:MACROLET, DEFTYPE,
  DEFSETF, DEFINE-SETF-METHOD establish an implicit BLOCK.

* X3J13 vote <128> is implemented: MAKE-PATHNAME, PATHNAME-HOST,
  PATHNAME-DEVICE, PATHNAME-DIRECTORY, PATHNAME-NAME, PATHNAME-TYPE have
  a keyword argument :CASE. Thanks to Marcus Daniels.

* X3J13 vote <137> is implemented: New functions WILD-PATHNAME-P,
  PATHNAME-MATCH-P and TRANSLATE-PATHNAME. Thanks to Marcus Daniels.

* X3J13 vote <130> is implemented: New built-in type LOGICAL-PATHNAME.
  New place LOGICAL-PATHNAME-TRANSLATIONS. New functions LOGICAL-PATHNAME,
  TRANSLATE-LOGICAL-PATHNAME, LOAD-LOGICAL-PATHNAME-TRANSLATIONS,
  COMPILE-FILE-PATHNAME. Thanks to Marcus Daniels.

* X3J13 vote <132> is implemented: Synonym streams to file streams are
  allowed as pathnames.

* Amiga version: SCREEN package is implemented. Thanks to Jörg Höhle.

* The debugger emits some more messages to *DEBUG-IO*, not *ERROR-OUTPUT*.

* (COERCE symbol 'FUNCTION) now works.

* Fixed a bug in ENOUGH-NAMESTRING: In many cases, a relative directory
  specification was returned instead of an absolute directory specification.

* Fixed a CLOS bug which caused (DEFCLASS FOO (STANDARD-OBJECT) ()) and
  (DEFINE-CONDITION FOO (CONDITION) ()) to signal errors.

* Fixed a bug: In some situations, USE-PACKAGE reported a name conflict when
  there was none.

* Fixed a bug: (READ-CHAR-NO-HANG stream nil eof-object) now signals an error
  if stream is not an input stream. Previously it returned eof-object.

* Fixed a bug: On some Unix systems, (FINISH-OUTPUT *TERMINAL-IO*) signalled
  an error if standard output was redirected to a file.

* (SQRT 0) now returns an integer 0 instead of a floating-point 0.0.

* Readline library: Fixed a small problem with input prompts longer than the
  screen width.

* Fixed three bugs in the built-in editor. One of them made the editor
  entirely unusable.

Portability
-----------

* Added some support for MS Windows.

* On DOS, the readline library now handles the /!INPUTRC and history files
  correctly.

* Some modification for the sake of gcc-2.6.1.

Other modifications
-------------------

* Generational garbage collection now also works on Linux (1.1.52 or newer).

* On Unix, external modules written in C can be linked to CLISP without
  recompiling CLISP from source. For example, the STDWIN library.

* Small fix: On some machines, some internal objects were being printed as
  #<SYSTEM-POINTER ...> instead of #<FRAME-POINTER ...>.

* Miscellaneous documentation updates.


1 September 1994
================

User visible changes
--------------------

* The DEFCONSTANT warning about redefinition of a constant is also inhibited
  if the constant's new and old values are the same string (in the sense of
  EQUAL). Thanks to Marcus Daniels.

* Unix version only: The daylight saving time flag of a time zone (eighth
  value of GET-DECODED-TIME and DECODE-UNIVERSAL-TIME) is now correct.

Portability
-----------

* Added support for Acorn ARM running RISCOS. Thanks to Peter Burwood.

* Added support for NetBSD 1.0. Thanks to Douglas Crosher.

* Updated support for EMX and DJGPP.

* GNU malloc for HP-UX now works.


23 August 1994
==============

User visible changes
--------------------

* X3J13 vote <64> is implemented: New macro DESTRUCTURING-BIND.

* The function ED can now edit functions that have been entered in
  interpreted form even if they have later been compiled.

* New function UNCOMPILE. (UNCOMPILE function-name) undoes the effect of
  (COMPILE function-name) if the function's definition had been entered
  in interpreted form.

* The OPEN option :IF-EXISTS :RENAME-AND-DELETE now deletes the renamed
  file. Previously :RENAME-AND-DELETE was equivalent to :RENAME.

* (LISP-IMPLEMENTATION-VERSION) returns a more precise version string.

* Readline library: Completion of a function call with no arguments
  automatically adds the closing parenthesis.

* Readline library: When a closing parenthesis is typed, the corresponding
  opening parenthesis is displayed.

Portability
-----------

* Added support for Convex. Thanks to Marcus Daniels.

* Added support for SCO. Thanks to Cathy Bareiss and Marcus Daniels.

* More NeXTstep support.

* More Sinix support. Thanks to Manfred Weichel.

* Updated support for AmigaOS. Thanks to Jörg Höhle.

* Some modification for the sake of gcc-2.6.

* Added GNU malloc. For HP-UX.

* Added a bunch of character set conversion utilities. Covers the ASCII,
  ISO Latin-1, IBM PC, HP Roman8, NeXTstep and Atari ST character sets.

* The `configure' script now prints its results.

* Floating point computations on some CPUs (Sparc, HP-PA, M88000, RS/6000):
  Fixed some confusion between overflow and NaN and between underflow and zero.

* Removed support for Atari Turbo-C (now known as PURE-C).

Other modifications
-------------------

* Copyright clarification.

* Generational garbage collection. This works only for Unix implementations
  with powerful virtual memory management, currently only SunOS.

* Improved virtual memory efficiency:
  - Memory model SPVW_PAGES: don't put a piece of management data into
    every page.
  - Memory model SPVW_BLOCKS: compact conses, don't shuffle them, so that
    they are kept sorted according to their age.
  - Memory model SPVW_PURE_BLOCKS: pages containing garbage are
    immediately freed.

* Unix version only: To reduce the startup time, try to use mmap() instead
  of read() for the startup file.

* Added a readline manual page.

* Miscellaneous documentation updates.


4 July 1994
===========

User visible changes
--------------------

* X3J13 votes <115> and <114> are implemented: an elaborate LOOP macro.
  New macro LOOP-FINISH.
  Warning: The scoping rules for the iteration variables are hairy. If a
  FOR/AS initialisation form refers to an iteration variable of a subsequent
  FOR/AS clause, the effects are implementation dependent!

* X3J13 vote <120> is implemented: New function MAP-INTO.

* X3J13 vote <79> is implemented: New constants
  LEAST-POSITIVE-NORMALIZED-SHORT-FLOAT,
  LEAST-NEGATIVE-NORMALIZED-SHORT-FLOAT,
  LEAST-POSITIVE-NORMALIZED-SINGLE-FLOAT,
  LEAST-NEGATIVE-NORMALIZED-SINGLE-FLOAT,
  LEAST-POSITIVE-NORMALIZED-DOUBLE-FLOAT,
  LEAST-NEGATIVE-NORMALIZED-DOUBLE-FLOAT,
  LEAST-POSITIVE-NORMALIZED-LONG-FLOAT,
  LEAST-NEGATIVE-NORMALIZED-LONG-FLOAT.

* The macro WITH-OUTPUT-TO-PRINTER now also works on DOS.

* Fixed a bug in DO-SYMBOLS: A symbol which is exported from a used package
  was considered accessible in the using package even if it was shadowed by
  another present symbol of the same name.

* Fixed a bug in the debugger which caused the BACKTRACE commands to print
  garbage if the current user interface language was not english.

Other modifications
-------------------

* Miscellaneous documentation updates.


22 June 1994
============

User visible changes
--------------------

* French support is now complete. Thanks to Jörg Höhle.

* The user interface language (english, german or french) can now be chosen
  at startup time through a command line option. The constant *LANGUAGE* has
  been removed, and its value has been removed from *FEATURES*. New macros
  ENGLISH, DEUTSCH, FRANCAIS and LANGUAGE-CASE.

* There is a command line option that makes CLISP behave more like what
  ILISP (a popular Emacs LISP interface) expects.

* The function CLOS:CALL-NEXT-METHOD can now be called with arguments, but
  the check that the set of applicable methods must be the same as for the
  original arguments will be bypassed.

* New functions READ-CHAR-SEQUENCE, WRITE-CHAR-SEQUENCE, READ-BYTE-SEQUENCE,
  WRITE-BYTE-SEQUENCE which perform fast block I/O.

* Errors of type FLOATING-POINT-UNDERFLOW are inhibited in floating point
  computations (and zero is returned instead) during execution of the new
  macro WITHOUT-FLOATING-POINT-UNDERFLOW.

* X3J13 vote <95> is implemented: If the readtable argument passed to
  GET-MACRO-CHARACTER and GET-DISPATCH-MACRO-CHARACTER is NIL, the standard
  readtable is used.

* PROBE-FILE doesn't report an error any more if an intermediate directory
  in the path doesn't exist. NIL is returned instead.

* The DEFCONSTANT warning about redefinition of a constant is inhibited if
  the constant's new and old values are the same (in the sense of EQL).
  Thanks to Marcus Daniels.

* The function INTERACTIVE-STREAM-P knows that if the terminal stream is
  referring to a regular file (via input redirection) it is not interactive.

* There is a user programmable kind of streams, called generic streams.
  New functions MAKE-GENERIC-STREAM, GENERIC-STREAM-CONTROLLER,
  GENERIC-STREAM-P, GENERIC-STREAM-READ-CHAR, GENERIC-STREAM-READ-BYTE,
  GENERIC-STREAM-LISTEN, GENERIC-STREAM-WRITE-CHAR, GENERIC-STREAM-WRITE-BYTE,
  GENERIC-STREAM-WRITE-STRING, GENERIC-STREAM-CLEAR-INPUT,
  GENERIC-STREAM-CLEAR-OUTPUT, GENERIC-STREAM-FINISH-OUTPUT,
  GENERIC-STREAM-FORCE-OUTPUT, GENERIC-STREAM-CLOSE.
  See impnotes.txt for details. Thanks to Marcus Daniels and Don Cohen.

* The macro WITH-OUTPUT-TO-PRINTER may now also work on OS/2.

* Fixed a CLOS bug: Generic functions with both optional and keyword
  arguments didn't work.

* Fixed a serious bug in the compiler which caused incorrect code to be
  generated for functions like (LAMBDA (X) (SETQ X 1)).

* Fixed a serious bug in the compiler which caused the compiler to crash
  when compiling functions which contain two or more calls to ASSERT.

* Fixed a bug: The macroexpander of MULTIPLE-VALUE-SETQ built up a
  syntactically illegal form.

* Fixed a bug in the reader: When reading pathnames from the syntax
  #S(PATHNAME ...), #n# references in pathname components were not
  resolved prior to calling MAKE-PATHNAME.

* Fixed a bug in the reader: (read-from-string "1/") signalled an error
  of type DIVISION-BY-ZERO.

* Fixed a bug in the terminal stream: If several consecutive READ-LINE
  operations on the terminal stream were performed without any text
  containing newlines being output between them, the prompt finally got
  duplicated and then became longer and longer.

* Fixed a bug in the readline library (bad handling of prompts longer than
  one line). Thanks to Marcus Daniels.

Installation
------------

* All non-Unix versions: Setting the local time zone should now be much
  easier. 122 time zone names are supported.

Portability
-----------

* Unix version only: Getting the time zone should be more robust.

* Added support for NeXT (68k or i386 CPU) running NeXTstep 3.2. Thanks to
  Marcus Daniels.

* Added support for Sequent PTX. Thanks to Marcus Daniels.

* Added support for m88000 running DG/UX. Thanks to Pat McClanahan.

* Added support for UnixWare. Thanks to Alexander Adam.

* Added support for BSDI/386. Thanks to Atsuo Ohki.

* More support for WATCOM C on DOS. Thanks to Blake McBride.

* More support for IRIX 5. Thanks to Bjorn Remseth.

* More support for Sun4m. Thanks to Neil Faulks.

* Better support (speedup) for HP 9000/800 running HP-UX.

* On HP 9000/700 running HP-UX: Don't depend directly on the assembler.

* Maybe some support for SCO. Thanks to Cathy Bareiss.

Other modifications
-------------------

* Speedup SUBLIS and NSUBLIS.

* Let all known versions of gcc2 emit dbra instructions for loops. Thanks
  to Jörg Höhle.

* Renamed condition.lsp to conditio.lsp.

* Miscellaneous documentation updates.


8 January 1994
==============

Portability
-----------

* Remove (incomplete) support for VMS.


7 January 1994
==============

CLISP now compiles and runs on
* microcomputers:
  * Atari ST/TT
  * Amiga 500-4000
  * DOS
  * MS Windows 3.1
  * OS/2 2.0
* Unix workstations:
  * PC, Linux
  * PC, USL SVR4
  * Sun4, SunOS 4 or 5
  * HP9000/800, HP-UX
  * SGI Mips, Irix 4 or 5
  * DEC Alpha AXP, OSF 1.3
  * DECstation 5000, Ultrix 4.2
  * IBM RS/6000, AIX 3.2
  * M88000
  * Sun386, SunOS 4
  * Sun3, SunOS 4 (?)
  * HP9000/300, HP-UX or NetBSD
  * Apple MacII, A/UX (?)
  * Amiga 3000, Amiga Unix 2.1
  * NeXT, NeXTstep 3.1
  * PC, 386BSD or NetBSD
  * PC, Coherent 4.0
  * Atari ST/TT, MiNT


7 January 1994
==============

Important note
--------------

* Changed bytecode format. All .fas files generated by previous CLISP versions
  are invalid and must be recompiled.

User visible changes
--------------------

* X3J13 votes <186> and <31> are implemented: the Common Lisp Condition System.
  New macros
    DEFINE-CONDITION, IGNORE-ERRORS, HANDLER-CASE, HANDLER-BIND,
    RESTART-CASE, WITH-RESTARTS, WITH-SIMPLE-RESTART, RESTART-BIND,
    WITH-CONDITION-RESTARTS,
  new types
    RESTART, CONDITION, SERIOUS-CONDITION, ERROR, PROGRAM-ERROR, CONTROL-ERROR,
    ARITHMETIC-ERROR, DIVISION-BY-ZERO, FLOATING-POINT-OVERFLOW,
    FLOATING-POINT-UNDERFLOW, CELL-ERROR, UNBOUND-VARIABLE, UNDEFINED-FUNCTION,
    TYPE-ERROR, PACKAGE-ERROR, STREAM-ERROR, END-OF-FILE, FILE-ERROR,
    STORAGE-CONDITION, WARNING,
    SIMPLE-CONDITION, SIMPLE-ERROR, SIMPLE-TYPE-ERROR, SIMPLE-WARNING,
  new functions
    MAKE-CONDITION, SIGNAL, COMPUTE-RESTARTS, FIND-RESTART, INVOKE-RESTART,
    INVOKE-RESTART-INTERACTIVELY, ABORT, CONTINUE, MUFFLE-WARNING, STORE-VALUE,
    USE-VALUE, INVOKE-DEBUGGER, RESTART-NAME,
    ARITHMETIC-ERROR-OPERATION, ARITHMETIC-ERROR-OPERANDS, CELL-ERROR-NAME,
    TYPE-ERROR-DATUM, TYPE-ERROR-EXPECTED-TYPE, PACKAGE-ERROR-PACKAGE,
    STREAM-ERROR-STREAM, FILE-ERROR-PATHNAME, SIMPLE-CONDITION-FORMAT-STRING,
    SIMPLE-CONDITION-FORMAT-ARGUMENTS,
  new variables
    *BREAK-ON-SIGNALS*, *DEBUGGER-HOOK*.
  See impnotes.txt for details. Thanks to David Gadbois who wrote most of this.

* X3J13 vote <40> is partially implemented: New variable *PRINT-READABLY*.

* X3J13 vote <34> is implemented: Arrays and packages may now appear as
  constants in compiled code.

* X3J13 vote <90> is implemented: FUNCTIONP on symbols and conses now always
  returns NIL. The type FUNCTION is disjoint from SYMBOL and CONS.
  (COERCE object 'FUNCTION) is implemented.
  Warning: Old style calls like
    (FUNCTIONP object)
  may need to be converted to
    (OR (FUNCTIONP object)
        (SYMBOLP object)
        (AND (CONSP object) (EQ (CAR object) 'LAMBDA))
    )
  This fixes a CLOS bug: (TYPEP object 'FUNCTION) wasn't equivalent to
  (TYPEP object (FIND-CLASS 'FUNCTION)).

* Two new debugger commands Break+ and Break- permit to set resp. remove
  breakpoints at specified EVAL or APPLY frames.

* Warnings and errors produced by COMPILE-FILE are now accompanied by
  source line number information.

* The sub-char passed as second argument to read dispatch macros is now
  exactly the first non-digit read from the stream. Previously it was its
  upper-case equivalent.

* DEFPACKAGE now accepts an option (:DOCUMENTATION doctring).

* DIRECTORY now accepts a keyword argument :CIRCLE. If it is non-NIL,
  the directory search for ".../" and "**/" wildcards on Unix avoids endless
  loops that may result from symbolic links.

* The variable *LOAD-PATHS* in the Unix versions of config.lsp now uses
  "~/" (the home directory at run time) instead of #"~/" (the home directory
  at installation time). Thanks to Gabor Herr.

* Unix and OS/2 versions: New dangerous functions MAKE-PIPE-IO-STREAM,
  RUN-SHELL-COMMAND and RUN-PROGRAM.

* Unix version only:
  The command shell used by MAKE-PIPE-...-STREAM is now always /bin/sh; the
  environment variable SHELL is only used as interactive shell.
  Fixed a race condition in the functions EXECUTE, MAKE-PIPE-INPUT-STREAM,
  MAKE-PIPE-OUTPUT-STREAM that caused the child process to fail mysteriously.

* Attacks such as  (DO-ALL-SYMBOLS (S) (UNLESS (CONSTANTP S) (SET S NIL)))
  no longer crash CLISP.

* Fixed a CLOS bug: DEFCLASS failed to signal an error if several direct slots
  had identical names.

* Fixed a bug in the reader: When reading hash tables which contain #n#
  references, the hash codes must be recomputed after resolving the
  references. Thanks to Marcus Daniels.

* Fixed a bug in the printer: Printed representations with two different
  #1= definitions could result when PRINT-OBJECT methods were called while
  *PRINT-CIRCLE* was true. Thanks to Marcus Daniels.

Portability
-----------

* Fixed five bugs in the number crunching routines that appeared on
  64-bit processors or in combination with the WIDE tagging scheme.

* More support for 64-bit processors like DEC Alpha.

* Added support for NeXT running NeXTstep 3.1. Thanks to Marcus Daniels.

* Added support for Amiga 3000 running AMIX Unix. Thanks to Michel Loi.

* Fixed a problem with Ctrl-C on HP-UX. Thanks to Gabor Herr.

* Added support for HP9000/300 running HP-UX. Thanks to Gabor Herr.

* Added support for WATCOM C 9.5 on DOS.

* Amiga version: Tolerate memory outside the 27-bit addressable range.

* Remove support for the Atari ST assembly language version CLISP1.

Other modifications
-------------------

* Added some documentation of the GNU readline library.

* Changed the default memory size back from 2.5 megabytes to 2 megabytes.

* Miscellaneous documentation updates.


8 November 1993
===============

User visible changes
--------------------

* The STDWIN library can now be made part of CLISP by calling makemake with
  argument --with-stdwin.

* X3J13 vote <108> is implemented: New packages COMMON-LISP and
  COMMON-LISP-USER.

* X3J13 vote <112> is implemented:
  LOAD binds the variables *LOAD-PATHNAME* and *LOAD-TRUENAME*, COMPILE-FILE
  binds the variables *COMPILE-FILE-PATHNAME* and *COMPILE-FILE-TRUENAME*.
  New variables *LOAD-PATHNAME*, *LOAD-TRUENAME*, *COMPILE-FILE-PATHNAME*,
  *COMPILE-FILE-TRUENAME*.

* X3J13 vote <26> is implemented: COMPILE-FILE has a keyword argument :PRINT.
  New variables *COMPILE-WARNINGS*, *COMPILE-VERBOSE*, *COMPILE-PRINT*.

* Fixed two bugs in DEFPACKAGE: *PACKAGE* is not modified by DEFPACKAGE
  any more, and the :INTERN option now works.

* Fixed FUNCTION-LAMBDA-EXPRESSION such that it works on built-in functions.
  Thanks to France Dacar.

* Fixed a serious bug in GCD on 16-bit processors: (GCD x y) with
  2^k - 2^(k-16) <= |x|,|y| < 2^k could cause a division by zero.

Portability
-----------

* Added support for DEC Alpha AXP running OSF/1 Unix.

* Added support for Apple Mac II running A/UX.

* Added support for Atari ST/TT running MiNT. Thanks to Scott Kolodzieski.

* Support for SunOS4 cc now works.

* The makefile now also works with "parallel" make utilities (e.g. GNU make
  with option -j). Thanks to Rick Sladkey.

* Easier porting: The most dangerous optimizations (inline asm() statements,
  global register allocations, ...) are inhibited if CLISP is compiled with
  option SAFETY=3.

* Some modifications for the sake of gcc-2.5.

Other modifications
-------------------

* Speed up generic function dispatch.

* Some kinds of objects take less space (all CPUs except 680x0).

* The list of X3J13 votes and their current status in CLISP has been moved
  from file `src/defs2.lsp' to file `src/cltl2.txt'.

* The code for setting up a connection to an X server (file `src/socket.d')
  has been completely rewritten.

* Miscellaneous documentation updates.


27 September 1993
=================

User visible changes
--------------------

* COMPILE-FILE now handles top-level forms as described in CLtL2 p. 90:
  The macroexpansion of a top-level form is considered a top-level form.
  When a top-level form is a PROGN, LOCALLY, COMPILER-LET, SYMBOL-MACROLET
  or MACROLET form, the subforms of its body are considered top-level forms
  too and are compiled separately.
  This allows things like
    (PROGN (DEFCONSTANT X 3141) (DEFUN GET-X () X))
  or
    (PROGN (DEFCLASS SHIP () ()) (DEFUN SHIP-P (X) (TYPEP X 'SHIP)))
  to work.
  Warning: If you want to inhibit this splitting into separate forms (for
  example, because several of the forms refer to the same uninterned symbol),
  you have to use (LET () (PROGN ...)) instead of (PROGN ...).

* X3J13 vote <144> is implemented: New macro DECLAIM.

* X3J13 vote <113> is implemented: The macro LOCALLY is now a special form.

* Fixed a serious bug in the compiler: When compiling functions inline
  whose parameters are special variables, incorrect code could be generated.

* Fixed a bug in the compiler which caused the compiler to crash in some
  rare cases, notably when compiling Garnet-2.2.

* Fixed a bug that prevented the debugger commands DOWN and BOTTOM from
  working on Linux and SunOS.

* Fixed a CLOS bug: Specifying &KEY without &REST in generic function
  lambda lists didn't have the desired effect.

* DEFCLASS supports both :DEFAULT-INITARGS syntaxes.

* DEFGENERIC is more tolerant about invalid declarations.

Portability
-----------

* Added Dynix/ptx Sequent support. Thanks to Esther Davis.

* Added support for RS/6000 CPU and AIX. Thanks to Gabor Herr.

Other modifications
-------------------

* Made the memory allocation and (ROOM), (TIME ...) more virtual memory
  efficient (less paging on Unix and DOS). Thanks to Don Cohen.

* Added Geoffrey Gordon's "LISP tutorial".

* Renamed stdwin.lsp to stdwin2.lsp.

* Miscellaneous documentation updates.


1 September 1993
================

Important note
--------------

* Changed bytecode format. All .fas files generated by previous CLISP versions
  are invalid and must be recompiled.

User visible changes
--------------------

* Unix version only: The command line option -M now also accepts memory images
  that were compressed using GNU gzip.

* Fixed a CLOS bug: MAKE-INSTANCE now behaves as if it were calling
  INITIALIZE-INSTANCE, and INITIALIZE-INSTANCE and REINITIALIZE-INSTANCE
  behave as if they were calling SHARED-INITIALIZE.

* Fixed a CLOS bug: NO-APPLICABLE-METHOD failed to be called in some cases
  when no method was applicable.

* Relating to X3J13 vote <89>: The first argument to the functions FUNCALL and
  APPLY, denoting a function, may now also be a list (SETF symbol).

* Fixed a bogus error message that occurred when storing an out-of-range
  integer into an array of element-type (UNSIGNED-BYTE 32).

Portability
-----------

* Added NetBSD support. Thanks to Charles Hannum.

Other modifications
-------------------

* Added Jeff Dalton's "brief CLOS guide".

* Miscellaneous documentation updates.


22 August 1993
==============

Important note
--------------

* Changed bytecode format. All .fas files generated by previous CLISP versions
  are invalid and must be recompiled.

User visible changes
--------------------

* X3J13 vote <12> is partially implemented: Native CLOS. New package CLOS
  containing the macros
    DEFCLASS, DEFMETHOD, DEFGENERIC, GENERIC-FUNCTION, GENERIC-FLET,
    GENERIC-LABELS, WITH-SLOTS, WITH-ACCESSORS,
  the functions
    FIND-CLASS, (SETF FIND-CLASS), CLASS-OF, CLASS-NAME, (SETF CLASS-NAME),
    SLOT-VALUE, SLOT-BOUNDP, SLOT-MAKUNBOUND, SLOT-EXISTS-P,
    CALL-NEXT-METHOD, NEXT-METHOD-P,
    NO-APPLICABLE-METHOD, NO-PRIMARY-METHOD, NO-NEXT-METHOD,
    FIND-METHOD, ADD-METHOD, REMOVE-METHOD, COMPUTE-APPLICABLE-METHODS,
    METHOD-QUALIFIERS, FUNCTION-KEYWORDS, SLOT-MISSING, SLOT-UNBOUND,
    PRINT-OBJECT, DESCRIBE-OBJECT, MAKE-INSTANCE, INITIALIZE-INSTANCE,
    REINITIALIZE-INSTANCE, SHARED-INITIALIZE,
  the classes
    STANDARD-CLASS, STRUCTURE-CLASS, BUILT-IN-CLASS, STANDARD-OBJECT,
    STANDARD-GENERIC-FUNCTION, STANDARD-METHOD and all predefined classes,
  and the method combination
    STANDARD.
  See impnotes.txt for details. X3J13 vote <13> is implemented, too.

* X3J13 vote <63> is implemented: DESCRIBE receives the output stream as
  optional argument. New function CLOS:DESCRIBE-OBJECT.

* X3J13 vote <149> is implemented: The second argument to SUBSEQ may now
  be NIL. Thanks to Thomas Kirk.

* X3J13 vote <175> is implemented: TAILP now also works on dotted lists.

* X3J13 vote <124> is implemented: (DECLARE (OPTIMIZE (DEBUG ...))) is legal.

* The type specifier (EQL object), a synonym for (MEMBER object), is now
  implemented.

* New DEFSTRUCT option :INHERIT which is exactly like :INCLUDE except that it
  doesn't create new accessors for the inherited slots. Use this option to
  avoid the problems that occur when using the same :CONC-NAME for the new
  and the inherited structure.

* Fixed EXPORT and USE-PACKAGE: Don't signal a name conflict between the
  symbol being exported and a symbol accessible in the using package if
  the latter symbol is on the list of shadowing symbols of the using package.

* Fixed VECTOR-PUSH-EXTEND. It now works on vectors of dimension 0 and
  on bit-vectors.

* Fixed PRINT-UNREADABLE-OBJECT: Don't output adjacent spaces.

* Fixed a bug in the reader that caused an endless loop or endless recursion
  when resolving #n=/#n# references in objects that already contained cyclic
  data structures, e.g. when reading (#1=a #.'#2=(b . #2#) #1#).

* Fixed a bogus error message in the complex number reader.

Portability
-----------

* The DOS README explains how to run CLISP in the DOS box of Microsoft
  Windows. Thanks to Ralf Muschall.

* Added Sinix support. Thanks to Manfred Weichel.

* Improved installation on OS/2.

Other modifications
-------------------

* A function proclaimed INLINE will be taken inline in a wider set of
  circumstances. (Previously INLINE worked only when that function was being
  used in the same file or in a file that REQUIREd the file defining the
  function.)

* The compiler now produces better code for (APPLY (FUNCTION fun) args).

* Changed the default memory size from 2 megabytes to 2.5 megabytes.

* Miscellaneous documentation updates.


17 July 1993
============

User visible changes
--------------------

* X3J13 vote <150> is mostly implemented: Reading and printing of symbols
  (and characters with bits or fonts attributes) is now affected by
  (READTABLE-CASE *READTABLE*), whose value may be one of :UPCASE, :DOWNCASE
  and :PRESERVE. New place READTABLE-CASE.

* Support for immutable objects is implemented. Attempts to modify read-only
  data will signal an error. Program text and quoted constants loaded from
  files are considered read-only data. Never again will you be allowed to
  write programs that destructively modify themselves!
  This works only for Unix implementations with powerful virtual memory
  management, currently only Linux and SunOS. To enable it, you have to
  add -DIMMUTABLE to the CFLAGS in the makefile when building CLISP.

* Fixed DEFUN such that
  (progn
    (flet ((bar (x) (+ x 10))) (defun bar (y) (if (zerop y) 1 (bar (1- y))))
    (bar 1)
  )
  returns 10 instead of 1.

* Fixed a bug in the compiler that caused the compiler to crash by endless
  recursion and stack overflow when compiling assignments to symbol macros.

Portability
-----------

* Added support for m88000 CPU.

* Amiga version: detect 68000 CPU, for better use of present memory.

Other modifications
-------------------

* Miscellaneous documentation updates.


29 June 1993
============

User visible changes
--------------------

* X3J13 vote <89> is implemented: (SETF symbol) is now a valid syntax for a
  function name in (funname ...), (FUNCTION funname), (DEFUN funname ...),
  (COMPILE funname ...), (DISASSEMBLE funname), (ED funname), FLET, LABELS etc.
  New function FDEFINITION.

* X3J13 vote <173> is implemented: New special form SYMBOL-MACROLET. The
  macroexpansion environment passed to macro expanders and to MACROEXPAND-1,
  MACROEXPAND, GET-SETF-METHOD, GET-SETF-METHOD-MULTIPLE-VALUE now comprises
  both the variable environment and the function environment.
  New macro DEFINE-SYMBOL-MACRO.

* New macro PRINT-UNREADABLE-OBJECT.

* Fixed a bug: The string comparison functions STRING<, STRING>, STRING<=,
  STRING>=, STRING/=, STRING-LESSP, STRING-GREATERP, STRING-NOT-GREATERP,
  STRING-NOT-LESSP, STRING-NOT-EQUAL now return the index of the first mismatch
  instead of T.

* Fixed a bug: The functions REMOVE-DUPLICATES and DELETE-DUPLICATES produced
  an out-of-bounds error when called on a small sequence, with :FROM-END T
  argument and without :END argument.

Portability
-----------

* Updated support for DJGPP.

Other modifications
-------------------

* The macros SETF, PUSH, POP, PUSHNEW have been completely rewritten.

* Changed internal representation of special form handlers: They now consume
  regular memory. This frees one type tag, which will be used by CLOS
  instances.

* Miscellaneous documentation updates.


24 May 1993
===========

User visible changes
--------------------

* New macro DEFPACKAGE.

* New function FUNCTION-LAMBDA-EXPRESSION.

* New package SCREEN containing some functions for random screen access
  (Unix, DOS, OS/2, Atari, VMS versions only).

* X3J13 vote <5> is implemented: The value of *APPLYHOOK* must now be
  a function of two arguments.

* X3J13 vote <104> is implemented: COMPILE-FILE now binds *READTABLE*.

* X3J13 vote <161> is implemented: SHADOW now accepts strings as well
  as symbols.

* Fixed a bug in the compiler which caused the compiler to crash when
  compiling (CASE key ...) forms with constant key.

* Fixed a bug in the compiler which produced unloadable .fas files
  when compiling forms like (SETF ... (FUNCTION LIST)).

* Fixed a bogus error message in the AREF function.

* The built-in editor on Unix now handles the Delete key the same way
  as the Backspace key or Ctrl-H.

* Fixed a bug in + that occasionally caused (- x x) to return a
  long-float zero which was not EQL to the other zeroes of type LONG-FLOAT.

* Fixed a bug: Correctly do round-to-even when adding two long-floats.

* Fixed a bug: The destructive sequence functions DELETE etc. failed to
  produce an error when called on a sequence of type LIST and with an :END
  argument larger than the list's length.

* Corrected the branch cuts of the complex ATAN and ATANH functions.

Portability
-----------

* 68000 and other versions: Fixed a bug in the low-level division algorithm.

* Mips and Vax versions: Finished the low-level number crunching routines.

* Added Ultrix support.

* Added Coherent support.

* Finished Sun3 support.

Other modifications
-------------------

* The file `src/defs2.lsp' contains a list of X3J13 votes and their current
  status in CLISP.

* The file `src/foreign.txt' documents how to do function calls to foreign
  language routines from within CLISP.

* Miscellaneous documentation updates.


5 April 1993
============

Portability
-----------

* 68000/68020 versions: Fixed some bugs in the low-level number crunching
  routines.

* Improved efficiency of the WIDE tagging scheme.


30 March 1993
=============

User visible changes
--------------------

* Fixed a bug in + that caused the sign of (+ x y) to be wrong when x and y
  were double-floats satisfying  0 < x < -y  or  0 > x > -y .

* New special form LOAD-TIME-VALUE.

* The function DIR now sorts its output.

* A new place (DEFAULT-DIRECTORY) manages the "current directory".

* When LOAD is called with a pathname as argument that contains a parent
  directory component (".."): Ignore the variable *LOAD-PATHS*, avoid an error.

* Fixed TRACE so that functions calling TRACE are correctly handled by
  COMPILE-FILE.

Portability
-----------

* Unix version: Correct handling of system calls that are interrupted
  by signals.

* Finished IRIX support.

Other modifications
-------------------

* Miscellaneous documentation updates.


19 March 1993
=============

User visible changes
--------------------

* Replaced variable *TEMPFILE* by a function EDITOR-TEMPFILE.

Portability
-----------

* Unix version: Corrected detection of ANSI C header files.

* Unix version: Check whether signal handlers are automatically reinstalled
  when activated.

* Made readline library ANSI C compliant and (on Unix) auto-configuring.

* In case there is no room for three extra bits in a symbol pointer,
  allocate three stack words per binding in a VAR frame (instead of two stack
  words). This completes the Amiga 3000/4000 version.

* Completed memory model SPVW_PURE_BLOCKS: There is a large contiguous memory
  area for each kind of Lisp object. This model is used only if memory can
  be allocated at prescribed addresses, for example on Unix with mmap().

* More 386BSD support.

Other modifications
-------------------

* Remove limit on the number of files that may be specified on the command
  line. Limit was 1000.

* Miscellaneous documentation updates.


4 March 1993
============

User visible changes
--------------------

* Fixed a bug in ADJOIN that caused ADJOJN and PUSHNEW to push (key item)
  instead of item onto the list when a :KEY argument was present.

* Amiga version: allow opening of "files" on special devices.

* OS/2 version: Long filenames on DOS (FAT) filesystems no longer produce
  errors. They are now silently truncated to 8+3 characters.

* Unix, Amiga, OS/2 versions: When a pathname is to be fully specified, no
  subdirectory wildcard "**/" or ".../" is allowed. Check this.

Portability
-----------

* Corrected underflow detection in SCALE-FLOAT on 16-bit processors.

* Atari ST version: fixed getenv(), wrote INSTALL instructions.

Other modifications
-------------------

* Miscellaneous documentation updates.


21 February 1993
================

User visible changes
--------------------

* Include test suite into distribution.

* Add COMMON-LISP and CLTL1 to the *FEATURES*.

* Fixed a bug in the compiler which caused the compiler to crash in some
  rare cases.

* Fixed a bug in WITH-OPEN-FILE: handle the case when OPEN returns NIL.

* Amiga version: Fixed bug in FILE-POSITION.

* Amiga version: Renamed REXX-WAIT-COMMAND to REXX-WAIT-SENT-COMMAND.

Portability
-----------

* On HP-UX: Use /bin/ksh for shell scripts instead of the buggy /bin/sh.

* Now compiles on IRIX using CC="cc -ansi".

* Added 386BSD support.

Other modifications
-------------------

* Miscellaneous documentation updates.


3 February 1993
===============

Portability
-----------

* Support for 386 UHC UNIX System V release 4 now works.

Other modifications
-------------------

* lispbibl.d: Rename macro `untype' to `upointer', `type_untype_object' to
  `type_pointer_object'.

* lispbibl.d: Clean up selection of type code and frame code tables.

* Remove init streams. Use string input streams instead.


1 February 1993
===============

User visible changes
--------------------

* Fixed handling of declarations in macros DO-SYMBOLS, DO-EXTERNAL-SYMBOLS,
  DO-ALL-SYMBOLS, DOSEQ, DOHASH.

* LISTEN on file streams opened with :DIRECTION :OUTPUT now returns NIL.

* Pathnames resulting from OPEN on special files are now called
  "file handle streams", they are unbuffered file streams.
  They can now be used as argument in situations where a pathname is expected.

Portability
-----------

* The `target' and `configure' scripts no longer depend on awk.

* Support Sun4 with 32 bit address range (kernel architecture "Sun4m") as
  well as Sun4 with 29 bit address range (kernel architecture "Sun4", "Sun4c).

* Can now exploit the shared memory facilities of SunOS 4.1 and of Linux.

* Added support for 386 UHC UNIX System V release 4.

Other modifications
-------------------

* Implemented memory model SPVW_PURE_PAGES where memory is divided
  into many small pages each containing objects of the same type.

* Fixed up source for systems without window streams.

* lispbibl.d, constobj.d: reorder the stream types such that the test for
  file stream becomes faster.

* /usr/local/lib/aclocal.m4, configure.in, unixconf.h.in: prefix my own local
  macros by CL_ instead of AC_.

* Miscellaneous documentation updates.


11 January 1993
===============

User visible changes
--------------------

* Fixed meaning of :KEY argument for SUBLIS and NSUBLIS.

* DOS, OS/2 versions: adapted to emx 0.8f. This results in better
  *KEYBOARD-INPUT* on DOS and faster screen access on OS/2.

* Amiga version: implemented SHELL.

* OS/2 version: implemented MAKE-PIPE-INPUT-STREAM and MAKE-PIPE-OUTPUT-STREAM.

* compiler.lsp: Emit a warning when #'foo is used but foo is undefined.

* rexx.d, rexx.lsp: remove the trailing "p" from the keywords.

* init.lsp: don't call a macro a "Common Lisp function".

* stream.d, readline/readline.[ch]: exported rl_deprep_terminal such that a
  failing call to xmalloc() can now signal an ordinary error instead of exiting.

Portability
-----------

* Rewrote makemake.in using indentation.

* /usr/local/lib/aclocal.lsp: fixed AC_SYS_ERRLIST (m4 bug?) and AC_RENAME,
  improved AC_SELECT and added AC_SETITIMER.

* spvw.d: implement ualarm for Unix with interval timers, e.g. HP/UX or Linux.

* Remove support for Linux 0.12.

Other modifications
-------------------

* Language (DEUTSCH resp. ENGLISH) can now be set from CFLAGS, without
  modifying lispbibl.d.

* _README translated into german.

* Renamed clispsrc.1 to FILES.1.

* Renamed pseudofu.d to pseudofun.d.

* Sun4 version: merged il_sparc.il into cc_sparc.il.

* lispbibl.d: use an enum type to get the stream types converted
  to consecutive numbers without risking clashes.

* intgcd.d: found algorithm for binary extended gcd.

* intlog.d: make use of 80386 instruction "bsfl" where possible.

* lispbibl.d: let gcc2 on 680x0 emit "dbra" instructions.

* spvw.d: use IPC_PRIVATE as key for all shared memory segments.

* avl.d: don't generate code for unused functions insert and delete.

* Miscellaneous documentation updates.


1 January 1993
==============

Release of first portable version of CLISP.
It now compiles and runs under
* Atari ST
* Amiga 500-2000
* DOS
* OS/2 2.0
* Linux
* Sun4
* Sun386
* HP9000/800

Now that the tests passed, I hope I'll never again have to remove a serious
bug.

