Diff for /gforth/NEWS between versions 1.2 and 1.27

version 1.2, 1996/10/02 09:48:54 version 1.27, 2007/12/31 18:40:23
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 User-visible changes between 0.1beta and 0.2.0  
 Improved etags support.  
 more.fs allows output paging.  User-visible changes between 0.6.2 and 0.6.9 (up to 2007-09-12):
 Changed popen and pclose to open-pipe and close-pipe.  
 Added form, rows, and cols.  Installation:
 Added compat/ directory containing ANS implementations of Gforth features.    support for DESTDIR, POST_INSTALL, INSTALL_SCRIPT
 added primitives EMIT-FILE, STDOUT, STDERR; EMIT and TYPE now work    report performance and functionality problems at end of "make"  
 through file words (and are redirectable).  Bug fixes
     Now works with address-space randomization.
     The single-step debugger works again in some engines.
     Many others.
     AMD64, ARM, IA-64 (Itanium): better performance
     PPC: disassembler and assembler (32-bit)
     Gforth EC: R8C, Lego NXT (complete?)
     New flags --ignore-async-signals, --vm-commit (default overcommit)
   Forth 200x:
     extension queries (produce true for all implemented extensions)
     REQUIRED etc. (not new)
     PARSE-NAME (new name)
     deferred words (new: DEFER@ DEFER! ACTION-OF)
     X:structures: +FIELD FIELD: FFIELD: CFIELD: etc.
   Unicode support (incomplete, documentation probably not up-to-date):
     added xchars words for dealing with variable-width multi-byte characters
     provide 8bit (ISO Latin 1) and UTF-8 support for xchars
   Number prefixes:
     0x is a hex prefix: 0xff and 0XfF now produces (decimal) 255
     # is a decimal prefix: #10 now produces (decimal) 10
     Signs after the number prefix are now accepted, e.g, #-50.
     ' now only handles a single (x)char: 'ab is no longer accepted, 
                                          'a' now produces (decimal) 97
   New words:
     \C C-FUNCTION (libcc C interface)
     OUTFILE-EXECUTE INFILE-EXECUTE BASE-EXECUTE (limited change of global state)
     16-bit and 32-bit memory acces: UW@ UL@ SW@ SL@ W! L! W@ L@ /W /L
     NEXT-ARG SHIFT-ARGS (OS command-line argument processing)
     NOTHROW (for backtrace control)
     FTRUNC FMOD (undocumented)
     SEE-CODE SEE-CODE-RANGE (show generated dynamic native code)
   Improvements/changes of existing words:
     S\", .\" now support \l, \m, \z, and limits hex and octal character specs.
     OPEN-FILE with W/O no longer creates or truncates files (no compat. file)
     TRY...ENDTRY changed significantly, compatibility files available (see docs).
     The disassembler (DISCODE) can now use gdb to disassemble code
     Uninitialized defered words now give a warning when executed
     Division is floored (disable with "configure --enable-force-cdiv")
     Gforth (not gforth-fast) reports division by zero and overflow on division
       on all platforms.
   Newly documented words:
   Environment variable GFORTHSYSTEMPREFIX (used by word SYSTEM and friends)
   C interface:
     exported symbols now start with "gforth_" (for referencing them from C code)
     support for use of libffi (supplied with gcc) (undocumented) and
     a C-compiler-based approach (requires C compiler at run-time) (incomplete).
     depth-changes.fs: report stack depth changes during interpretation
     ans-report.fs now reports CfV extensions
     fsl-util.4th: FSL support files (undocumented)
     regexp.fs for regular expressions (undocumented)
     complex.fs for complex numbers (undocumented)
     fft.fs for Fast Fourier Transform (undocumented)
     wf.fs, a Wiki implementation (undocumented)
     httpd.fs, a web server (undocumented)
     status.fs, show interpreter status in separate xterm (undocumented)
     profile.fs for profiling (undocumented, incomplete)
     endtry-iferror.fs, recover-endtry.fs to ease the TRY change transition
     test/tester.fs: Now works with FP numbers (undocumented)
     test/ttester.fs: Version of tester.fs with improved interface (T{...}T).
    compat library:
   Speed improvements:
     static stack caching (good speedup on PPC)
     mixed-precision division is now faster
     support for int128 types on AMD64
     workarounds for gcc performance bugs (in particular, PR 15242)
     branch target alignment (good speedup on Alpha).
   User-visible changes between 0.6.1 and 0.6.2:
   Bug fixes (in particular, gforth-0.6.2 compiles with gcc-3.3)
   New words: LATEST, LATESTXT (LASTXT deprecated)
   Operating environment: Added optional support for a C interface built
     on the ffcall libraries (more portable and powerful than the old
     one, but still not documented).  To use it, the ffcall libraries
     have to be installed before building Gforth (see INSTALL).
   Miscellaneous: Gforth-fast now uses static superinstructions (some
     speedup on some platforms); generally this is transparent (apart
     from the speedup), but there are lots of command-line options for
     controlling the static superinstruction generation.
   User-visible changes between 0.6.0 and 0.6.1:
   Bug fixes (installation on big-endian machines sometimes did not work)
   User-visible changes between 0.5.0 and 0.6.0:
   Changes in behaviour:
   S": interpreted use now ALLOCATEs the string (they live until BYE).
   Long word names (512MB on 32-bit systems) are now supported (change to
     the header format).
   New threaded code execution method: primitive-centric (allows the
     following), hybrid direct/indirect threaded (easier portability),
     with dynamic superinstructions (typical speedup on Athlon: factor
     2).  New engine gforth-itc for dealing with some potential
     backwards-compatibility problems (see "Direct or Indirect Threaded?"
     in the manual).
   Operating environment:
   Default dictionary size is now 4MB.
   Large file support on OSs that support them (i.e., files with more
     than 2GB on 32-bit machines).
   Gforth can now deal well with broken pipes in most situations.
   vi tags files can be built with tags.fs (usage like etags.fs).
   gforth.el mostly rewritten.
   New image file format.
   New words:
   File input: SLURP-FILE SLURP-FID 
   Programming tools: ID. .ID WORDLIST-WORDS SIMPLE-SEE
   Conditional execution: [DEFINED] [UNDEFINED]
   Defining Words: CONST-DOES> ]]
   String comparison: STR= STR< STRING-PREFIX?
   String literals: S\" .\" \"-PARSE
   Floating point output: F.RDP F>STR-RDP F>BUF-RDP
   Generalized prims2x.fs into Vmgen (see README.vmgen etc.); used the
     new capabilities in prims (e.g., automatic handling of the return
     stack and instruction stream).
   User-visible changes between 0.4.0 and 0.5.0:
   Changes in behaviour:
   There are now two engines: the fast engine (gforth-fast) is at least
     as fast as gforth in earlier releases; the debugging engine (gforth)
     supports precise backtracing for signals (e.g., illegal memory
     access), but is slower by a factor of 1-2.
   Block files now start at block 0 by default (instead of block 1).  If
     you have block files around, prepend 1024 bytes to convert them, or
     do a "1 OFFSET !" to establish the old behaviour.
   Gforth now does not translate newlines to LFs on reading.  Instead,
     READ-LINE now interprets LF, CR, and CRLF as newlines.  Newlines on
     output are in the OSs favourite format.
   SEE now disassembles primitives (or hex-DUMPs the code if no
     disassembler is available).
   >HEAD (aka >NAME) now returns 0 (instead of the nt of ???) on failure.
   Syntax of prim changed: stack effects are now surrounded by
     parentheses, tabs are insignificant.
   Operating environment:
   Gforth now produces a backtrace when catching an exception.
   On platforms supporting the Unix 98 SA_SIGINFO semantics, you get more
     precise error reports for SIGSEGV and SIGFPE (e.g., "stack
     underflow" instead of "Invalid memory address").
   Gforth now produces exit code 1 if there is an error (i.e., an
     uncaught THROW) in batch processing.
   You can use "gforthmi --application ..." to build an image that
     processes the whole command-line when invoked directly (instead of
     through gforth -i).
   20% speedup on 604e under powerpc-unknown-linux-gnu,
   19%-29% speedup on Celeron with gcc-2.95.
   New words:
   Missing ANS Forth words: EKEY EKEY? EKEY>CHAR
   Timing words: CPUTIME UTIME
   Vector arithmetic: V* FAXPY
   FP comparison: F~ABS F~REL
   Deferred words: <IS> [IS]
   Nested number output: <<# #>>
   Exception handling: TRY RECOVER ENDTRY
   Other: ]L PUSH-ORDER
   Significant extensions to the manual (added an introduction, among
     other things), many of them due to a new team member: Neal Crook.
   Added assemblers and disassemblers for 386, Alpha, MIPS (thanks to
     contributions by Andrew McKewan, Bernd Thallner, and Christian
     Pirker).  Contributions of assemblers and disassemblers for other
     architectures are welcome.
   User-visible changes between 0.3.0 and 0.4.0:
   Operating environment:
   Path handling: "." at the start of the path represents the directory
     the nearest enclosing file resides in (if there is none: the working
     directory). "~+" indicates the working directory.  The default path
     now has "." in front.
   gforth and gforthmi is now more GNU standards compliant (wrt
     command-line options).
   New command-line-option: --die-on-signal
   Errors are now directed to stderr.
   Stdout is now unbuffered, if it is a tty.
   User input device redirection (for filters) is now possible.
   Now runs on IRIX (and other MIPS-based systems without linker-flag -d).
   Direct threading now works on PowerPC (20% speedup on 604e).
   Better support for m68k (thanks to Andreas Schwab and Jorge Acereda).
   It is possible to create executables that contain the image (for
     non-OS systems).
   Added a lot of embedded control (EC) stuff. Supported controllers and
   small CPUs are Siemens C16x, 8086, 6502, Mixed-Mode's FPGA MISC, Bernd Paysan's
   4stack processor. Not finished: ShBoom alias PSC1000, H8, AVR.
   New, changed, and removed words:
   Renamed F0 to FP0 (avoids unexpected behaviour in hex), added aliases
     SP0, RP0, LP0 (recommended for future use) for S0, R0, L0.
   Renamed PARSE-WORD into SWORD (PARSE-WORD is used with the meaning of
     NAME in OpenBoot and dpans6 A.6.2.2008)
   Added FPICK (suggested by Julian Noble).
   S" gforth" ENVIRONMENT? now produces the version-string.
   Changed representation of types in struct package, and correspondingly
     changed names.
   Plain text documentation is now available in doc/gforth.txt.
   Documentation improvements.
   Wordlist structure changed.
   Added mini-oof.
   Reorganized files: added directories and reorganized many files into
     them; renamed files into 8.3 format to work with completely broken
     systems (but there are again some files that won't work there).
   Bug fixes.
   Various changes without log information only known as mega-patches.
   Cross compiler now also supports compilation only for undefined or forward
   referenced words. Plugins to support some native code generation
   (for PSC1000).
   More files in the compat library.
   User-visible changes between 0.2.1 and 0.3.0:
   Stack overflow detection by memory protection on most systems
           (allocation with mmap).
   gforth.fi is now fully relocatable.
   fully relocatable images are now easier to create.
   added primitives K and UNDER+.
   Win32 support.
   Improved support for embedded controllers and other deprived environments.
   some bug fixes.
   added concept index; other documentation improvements.
   User-visible changes between 0.2.0 and 0.2.1:
   Bug fixes
   User-visible changes between 0.1beta and 0.2.0:
   Portability and Installation:
 Support architectures with buggy long longs (alpha-dec-osf).  Support architectures with buggy long longs (alpha-dec-osf).
 Added tiny multitasker.  Better support for DOS and other non-Unix systems.
 Size changes through the command line are passed to the image (and  Size changes through the command line are passed to the image (and
 saved with savesystem); the preamble specifies an interpreter and is  saved with savesystem); the preamble specifies an interpreter and is
 propagated by save-system.  propagated by save-system.
 Added tables (case-sensitive wordlists)  
   Improved etags support.
   more.fs allows output paging.
   Added compat/ directory containing ANS implementations of Gforth features.
   Added tiny multitasker (tasker.fs).
   Added two alternatives for object-oriented programming: oof.fs, objects.fs.
   Added ans-report.fs (reports which words are used from which wordset).
   New words:
   Added FORM, ROWS, and COLS.
   added primitives EMIT-FILE, STDOUT, STDERR.
   Added TABLEs (case-sensitive wordlists).
   added POSTPONE,.
   Added the ability to combine arbitrary interpretation and compilation
   semantics (INTERPRET/COMPILE:); state-smart words were generally
   rewritten to use that mechanism.
   Changes to existing words:
   EMIT and TYPE now work through file words (and are redirectable).
 HEADER now stores the compilation wordlist in the header and REVEAL  HEADER now stores the compilation wordlist in the header and REVEAL
 reveals into that wordlist.  reveals into that wordlist.
 changed bahviour of system (no longer returns wretval, but puts it in  changed behaviour of SYSTEM (no longer returns wretval, but puts it in
 $?)  added (system) ( c_addr u -- wretval wior ).  $?)  added (SYSTEM) ( c_addr u -- wretval wior ).
 Added the ability to combine arbitrary interpretation and compilation  
 semantics; state-smart words were generally rewritten to use that  
 ' and ['] now give an error for compile-only words.  ' and ['] now give an error for compile-only words.
 added POSTPONE,.  
   Copyright (C) 1995,1996,1997,1998,2000,2003,2006,2007 Free Software Foundation, Inc.
   This file is part of Gforth.
   Gforth is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation, either version 3
   of the License, or (at your option) any later version.
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   GNU General Public License for more details.
   You should have received a copy of the GNU General Public License
   along with this program. If not, see http://www.gnu.org/licenses/.
   % Local Variables:
   % fill-prefix: "  "

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  Added in v.1.27

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