conservatory
/
elk
4
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

* Redid the layout of the NEWS file. 

git-svn-id: svn://svn.zoy.org/elk/trunk@62 55e467fa-43c5-0310-a8a2-de718669efc6
This commit is contained in:
sam 2003-08-30 16:16:40 +00:00
parent 6aee1646f0
commit 85776d6862
1 changed files with 414 additions and 409 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

823
NEWS
View File

@ -1,512 +1,517 @@
$Id: foo$ $Id$
Changes from release 3.0 to release 4.0 Changes between 3.0 and 4.0:
----------------------------
Changes from release 2.2 to release 3.0 * Nothing yet.
General: Changes between 2.2 and 3.0:
----------------------------
o A new C/C++ Programmer's Manual for Elk is now available General:
(60+ pages with many examples). See doc/README (item `cprog')
and doc/cprog.
o The documentation has been prepared for translation to HTML * A new C/C++ Programmer's Manual for Elk is now available
using the (Elk-based) `unroff' package. (60+ pages with many examples). See doc/README (item `cprog')
and doc/cprog.
o Elk now uses a new Scheme object representation (a `struct' rather * The documentation has been prepared for translation to HTML
than an `unsigned long') to make it work on 64-bit architectures using the (Elk-based) `unroff' package.
and to allow for larger heaps, a wider range of fixnums, and more
first-class Scheme types.
o As a consequence, the `pointer_constant_high_bits' are gone, as
is util/pchb.c.
o Elk has been ported to and tested on these new platforms (config * Elk now uses a new Scheme object representation (a `struct' rather
files are included in the distribution): than an `unsigned long') to make it work on 64-bit architectures
and to allow for larger heaps, a wider range of fixnums, and more
first-class Scheme types.
DEC/Alpha, OSF/1 * As a consequence, the `pointer_constant_high_bits' are gone, as
HP 9000, HP-UX 10.0 is util/pchb.c.
i386/486, BSDI BSD/OS
i386/486, Linux
IBM PowerPC, AIX 4.1
o A number of config files for obsolete platforms have been removed * Elk has been ported to and tested on these new platforms (config
from the distribution; config files for platforms where Elk 3.0 files are included in the distribution):
could not be tested are in config/untested. util/sgihack.c is gone.
o Extension initialization and finalization functions now begin DEC/Alpha, OSF/1
with `elk_init_' rather than just `init_' to avoid name conflicts. HP 9000, HP-UX 10.0
i386/486, BSDI BSD/OS
i386/486, Linux
IBM PowerPC, AIX 4.1
o The directory `contrib' has been removed from the distribution, * A number of config files for obsolete platforms have been removed
as most of the contributions either were no longer maintained from the distribution; config files for platforms where Elk 3.0
or have been made an official part of the distribution. could not be tested are in config/untested. util/sgihack.c is gone.
contrib/eval-string is now available as lib/misc/elk-eval.c.
o Site/platform-specific information such as the various X11 `load * Extension initialization and finalization functions now begin
libraries', machine name, operating system name, as well as the with `elk_init_' rather than just `init_' to avoid name conflicts.
Elk version number are now available as Scheme variables in
scm/siteinfo.scm. The file is created automatically and can be
loaded via `(require 'siteinfo)'.
o Most of the improvements in scm/debug-new.scm have been merged * The directory `contrib' has been removed from the distribution,
into the baseline debug.scm and the former has been removed. as most of the contributions either were no longer maintained
The inspector now starts at the correct frame when called after or have been made an official part of the distribution.
an error. contrib/eval-string is now available as lib/misc/elk-eval.c.
o examples/CC/class.c is a simple Elk extension demonstrating * Site/platform-specific information such as the various X11 `load
encapsulation of a C++ class in a Scheme type. libraries', machine name, operating system name, as well as the
Elk version number are now available as Scheme variables in
scm/siteinfo.scm. The file is created automatically and can be
loaded via `(require 'siteinfo)'.
o The file README has been renamed ROADMAP; RELEASE is now README. * Most of the improvements in scm/debug-new.scm have been merged
into the baseline debug.scm and the former has been removed.
The inspector now starts at the correct frame when called after
an error.
Interpreter kernel: * examples/CC/class.c is a simple Elk extension demonstrating
encapsulation of a C++ class in a Scheme type.
o Many bugs have been fixed, and the code has been made `64-bit clean'. * The file README has been renamed ROADMAP; RELEASE is now README.
o New functions for application writers to read/set the `error tag' Interpreter kernel:
displayed in error messages and the application name (Get_Error_Tag,
Set_Error_Tag, Set_App_Name).
o When dynamically loading objects, the C++ static constructors are * Many bugs have been fixed, and the code has been made `64-bit clean'.
now called _before_ all extension initializers. Ditto for C++
destructors and extension finalizers.
o New function for application/extension writers to load a file * New functions for application writers to read/set the `error tag'
whose name is given as a C string (Load_File). displayed in error messages and the application name (Get_Error_Tag,
o Load_Source_Port has been made `official' and may be used from Set_Error_Tag, Set_App_Name).
outside the interpreter.
o New functions for application/extension writers to convert * When dynamically loading objects, the C++ static constructors are
Scheme numbers to C unsigned int/long: Get_Unsigned, now called _before_ all extension initializers. Ditto for C++
Get_Unsigned_Long, Get_Exact_Unsigned, Get_Exact_Unsigned_Long. destructors and extension finalizers.
New function Get_Exact_Long.
o The `round' primitive now rounds to even for numbers halfway * New function for application/extension writers to load a file
between two integers. whose name is given as a C string (Load_File).
* Load_Source_Port has been made `official' and may be used from
outside the interpreter.
o The reader doesn't impose a limit on the length of strings and * New functions for application/extension writers to convert
symbols any longer. Scheme numbers to C unsigned int/long: Get_Unsigned,
Get_Unsigned_Long, Get_Exact_Unsigned, Get_Exact_Unsigned_Long.
New function Get_Exact_Long.
o The dynamic loading implementations now use the environment * The `round' primitive now rounds to even for numbers halfway
variable TMPDIR if present. between two integers.
o `dump' now works under SGI Irix 5.x. * The reader doesn't impose a limit on the length of strings and
symbols any longer.
o New constants ELK_MINOR and ELK_MAJOR for application/extension * The dynamic loading implementations now use the environment
writers. variable TMPDIR if present.
o Symbols containing special characters now print correctly when * `dump' now works under SGI Irix 5.x.
output with `write'.
o Various optimizations in the interpreter's inner loop to compensate * New constants ELK_MINOR and ELK_MAJOR for application/extension
for the performance loss caused by the struct-based object writers.
representation on some platforms.
Extensions: * Symbols containing special characters now print correctly when
output with `write'.
o The X11 extensions now work with X11 Release 6, Sun OpenWindows 3.x, * Various optimizations in the interpreter's inner loop to compensate
and Sun Motif. for the performance loss caused by the struct-based object
representation on some platforms.
o Extension-specific include files (unix.h, xlib.h, xt.h) are now Extensions:
installed in a subdirectory $install_dir/include/extensions
for use by applications.
o The object files for Athena or Motif widgets are now loaded * The X11 extensions now work with X11 Release 6, Sun OpenWindows 3.x,
by means of `require'. and Sun Motif.
o New POSIX-style regular expression extension (see doc/regexp and * Extension-specific include files (unix.h, xlib.h, xt.h) are now
examples/regexp). installed in a subdirectory $install_dir/include/extensions
for use by applications.
o The file hunk.c has been removed from lib/misc, as it no longer * The object files for Athena or Motif widgets are now loaded
serves any purpose. by means of `require'.
o Several bugs have been fixed in the UNIX and X11 extensions. * New POSIX-style regular expression extension (see doc/regexp and
examples/regexp).
* The file hunk.c has been removed from lib/misc, as it no longer
serves any purpose.
* Several bugs have been fixed in the UNIX and X11 extensions.
Changes from release 2.1 to release 2.2 Changes between 2.1 and 2.2:
----------------------------
General: General:
o Elk ported to new platforms: SGI Irix 5.1, HP-UX 9.0 * Elk ported to new platforms: SGI Irix 5.1, HP-UX 9.0
o All Scheme files now end with the suffix `.scm' * All Scheme files now end with the suffix `.scm'
o Introduced new symbols in the config files to be used by the * Introduced new symbols in the config files to be used by the
UNIX extension UNIX extension
o Reorganized the include files. Split external declarations * Reorganized the include files. Split external declarations
into `private' (intern.h) and `public' (extern.h) declarations into `private' (intern.h) and `public' (extern.h) declarations
to be used by extensions to be used by extensions
o It's no longer necessary to specify multiple destination * It's no longer necessary to specify multiple destination
directories in the site file (only install_dir; subdirectories directories in the site file (only install_dir; subdirectories
are created automatically) are created automatically)
o `init_objects' is gone from the site file, see INSTALL for a * `init_objects' is gone from the site file, see INSTALL for a
new, simpler way to link extensions or an application with Elk new, simpler way to link extensions or an application with Elk
statically statically
o New directory $install_dir/lib is created with files module.o, * New directory $install_dir/lib is created with files module.o,
standalone.o and shell scripts linkscheme, makedl, and ldflags standalone.o and shell scripts linkscheme, makedl, and ldflags
(see INSTALL) (see INSTALL)
o Elk can now be used by applications that must have their own * Elk can now be used by applications that must have their own
main() function. See INSTALL for details. main() function. See INSTALL for details.
Interpreter kernel: Interpreter kernel:
o New primitives to allow blocking of signals from within Scheme * New primitives to allow blocking of signals from within Scheme
code: disable-interrupts, enable-interrupts code: disable-interrupts, enable-interrupts
o Changed Disable_Interrupts and Enable_Interrupts macros to * Changed Disable_Interrupts and Enable_Interrupts macros to
allow nesting and to handle signals used by extensions allow nesting and to handle signals used by extensions
(specifically by the new UNIX extension) (specifically by the new UNIX extension)
o Extended representation of continuations to carry current * Extended representation of continuations to carry current
interrupt nesting level and restore it when being called interrupt nesting level and restore it when being called
o (Re-)enable interrupts in toplevel on error * (Re-)enable interrupts in toplevel on error
o Added default signal handlers for SIGPIPE and SIGHUP to clean * Added default signal handlers for SIGPIPE and SIGHUP to clean
up temporary files up temporary files
o New primitive: `features' * New primitive: `features'
o `require' now appends .scm to feature name to obtain file name * `require' now appends .scm to feature name to obtain file name
(if no file name has been specified and if the feature name (if no file name has been specified and if the feature name
doesn't have a suffix yet) doesn't have a suffix yet)
o Features elk:dump and elk:load-object are provided by the * Features elk:dump and elk:load-object are provided by the
interpreter if dump and dynamic loading are supported interpreter if dump and dynamic loading are supported
o Implemented Register_Onfork() and Call_Onfork() to provide * Implemented Register_Onfork() and Call_Onfork() to provide
`fork handlers' (used, for instance, by the UNIX extension) `fork handlers' (used, for instance, by the UNIX extension)
o Added fork handlers to the dynamic loading implementations to * Added fork handlers to the dynamic loading implementations to
create links for the temporary files create links for the temporary files
o Added a close function to I/O ports to allow for pipe-based ports * Added a close function to I/O ports to allow for pipe-based ports
o New primitive: char-ready? * New primitive: char-ready?
o Added a check to the code that restarts a dumped interpreter * Added a check to the code that restarts a dumped interpreter
to detect that the start address of the stack has been moved to detect that the start address of the stack has been moved
with respect to the original invocation (this happens between with respect to the original invocation (this happens between
Sun-4c and Sun-4m architectures, for instance) Sun-4c and Sun-4m architectures, for instance)
o Modified math.c to implement the distinction between exact and * Modified math.c to implement the distinction between exact and
inexact numbers as required by the language definition inexact numbers as required by the language definition
o New primitives: exact->inexact, inexact->exact * New primitives: exact->inexact, inexact->exact
o The number prefixes #e and #i are now supported * The number prefixes #e and #i are now supported
o Floating point numbers are no longer automatically reduced to * Floating point numbers are no longer automatically reduced to
integers; new conversion function Make_Flonum(double) in integers; new conversion function Make_Flonum(double) in
addition to Make_Reduced_Flonum(double) addition to Make_Reduced_Flonum(double)
o Added new conversion functions to cleanly distinguish between * Added new conversion functions to cleanly distinguish between
C ints and longs: Get_Long(Object), Make_Long(long), C ints and longs: Get_Long(Object), Make_Long(long),
Make_Unsigned_Long(unsigned long), and functions to convert Make_Unsigned_Long(unsigned long), and functions to convert
bignums from/to C longs bignums from/to C longs
o New conversion functions for exact integers: * New conversion functions for exact integers:
Get_Exact_Integer(Object) and Get_Exact_Long(Object) Get_Exact_Integer(Object) and Get_Exact_Long(Object)
o Removed the unique `void' type; #v is now converted into the empty * Removed the unique `void' type; #v is now converted into the empty
symbol by the reader; void? remains for compatibility symbol by the reader; void? remains for compatibility
o Implemented reader table for #-syntax * Implemented reader table for #-syntax
o New function Define_Reader() to allow extensions to register * New function Define_Reader() to allow extensions to register
their own read syntaxes (used by the new bitstring extension) their own read syntaxes (used by the new bitstring extension)
o Exported parts of the reader to simplify writing new reader * Exported parts of the reader to simplify writing new reader
functions in extensions functions in extensions
o New functions/macros to convert Scheme strings and/or symbols * New functions/macros to convert Scheme strings and/or symbols
into C strings (to be used by extension writers): Get_String, into C strings (to be used by extension writers): Get_String,
Get_Strsym, Get_String_Stack, Get_Strsym_Stack; see src/cstring.c Get_Strsym, Get_String_Stack, Get_Strsym_Stack; see src/cstring.c
o Now obsolete: Declare_C_Strings, Dispose_C_Strings, Make_C_String * Now obsolete: Declare_C_Strings, Dispose_C_Strings, Make_C_String
o Bug fixes: * Bug fixes:
o fixed a few bugs in the implementation of continuations and o fixed a few bugs in the implementation of continuations and
tail call optimization and in the generational, incremental tail call optimization and in the generational, incremental
garbage collector garbage collector
o there was a bug in the interaction between the garbage o there was a bug in the interaction between the garbage
collector and `dump' collector and `dump'
o identified additional critical sections to be protected o identified additional critical sections to be protected
from delivery of signals from delivery of signals
o initscheme.scm wasn't resolved against the load-path o initscheme.scm wasn't resolved against the load-path
o quasiquotation now also works for vectors (kudos to o quasiquotation now also works for vectors (kudos to
Tor Lillqvist for suggesting a simple fix) Tor Lillqvist for suggesting a simple fix)
o a bug in src/load-ld.c could cause the first static variable o a bug in src/load-ld.c could cause the first static variable
in a dynamically loaded .o file to not be zeroed in a dynamically loaded .o file to not be zeroed
Extensions: Extensions:
o New UNIX extension; see doc/unix for the reference manual and * New UNIX extension; see doc/unix for the reference manual and
examples/unix for a few demonstration programs examples/unix for a few demonstration programs
o New record extension; see doc/record for the reference manual. * New record extension; see doc/record for the reference manual.
The `struct' extension is now obsolete The `struct' extension is now obsolete
o New arbitrary-length bitstring extension; see doc/bitstring * New arbitrary-length bitstring extension; see doc/bitstring
for the manual for the manual
Changes from release 2.0 to release 2.1 Changes between 2.0 and 2.1:
----------------------------
General: General:
o New configuration files for the 386/486-PC running 386BSD and * New configuration files for the 386/486-PC running 386BSD and
DOS/DJGPP, for Suns running Solaris 2.1 (SunOS 5.1, and for DOS/DJGPP, for Suns running Solaris 2.1 (SunOS 5.1, and for
the Convex C230 running ConvexOS. the Convex C230 running ConvexOS.
o Reorganized the config files and the site file to allow for * Reorganized the config files and the site file to allow for
configuration of the generational, incremental garbage collector configuration of the generational, incremental garbage collector
o Introduced several new symbols in the config files to simplify * Introduced several new symbols in the config files to simplify
installation on several systems installation on several systems
o Added new targets to all Makefiles to allow `cross-localization' * Added new targets to all Makefiles to allow `cross-localization'
of the source tree (see comments in DOS section in MACHINES) of the source tree (see comments in DOS section in MACHINES)
Interpreter kernel: Interpreter kernel:
o Added a generational, incremental garbage collector * Added a generational, incremental garbage collector
o New primitives: garbage-collect-status, collect-incremental * New primitives: garbage-collect-status, collect-incremental
o Reorganized the source files to accommodate the new garbage * Reorganized the source files to accommodate the new garbage
collector and to separate garbage collector specific code collector and to separate garbage collector specific code
from code common to both garbage collectors from code common to both garbage collectors
o Empty list no longer counts as false; added primitive * Empty list no longer counts as false; added primitive
`empty-list-is-false-for-backward-compatibility' `empty-list-is-false-for-backward-compatibility'
o Changed delimiter character in load-path argument of -p option * Changed delimiter character in load-path argument of -p option
from comma to colon from comma to colon
o Initialize load-path from ELK_LOADPATH environment variable * Initialize load-path from ELK_LOADPATH environment variable
(if present) (if present)
o Added argument to -v option to control which messages to print * Added argument to -v option to control which messages to print
(linker command, init/finit functions) (linker command, init/finit functions)
o It's no longer considered an error if an object file contains * It's no longer considered an error if an object file contains
no initializers no initializers
o Completely rewritten implementations of `dump' for ELF (SysVR4, * Completely rewritten implementations of `dump' for ELF (SysVR4,
Solaris 2.x), ECOFF (Ultrix, Irix), and HP9000 a.out formats; Solaris 2.x), ECOFF (Ultrix, Irix), and HP9000 a.out formats;
the HP version now correctly handles shared libraries the HP version now correctly handles shared libraries
o Added support for dynamic loading under SysVR4 and Solaris 2.x * Added support for dynamic loading under SysVR4 and Solaris 2.x
(see comments in MACHINES) (see comments in MACHINES)
o Added code to read symbol table of object files on the Convex * Added code to read symbol table of object files on the Convex
o Bug fixes: * Bug fixes:
o dynamic-wind was completely broken; fixed it o dynamic-wind was completely broken; fixed it
o fixed a bug in the code that checks for the stack growing o fixed a bug in the code that checks for the stack growing
direction (caused dumped images to crash on startup) direction (caused dumped images to crash on startup)
o fixed a bug in the equal? predicate (could enter an o fixed a bug in the equal? predicate (could enter an
infinite loop when applied to environments) infinite loop when applied to environments)
o Fixed a number of portability problems, among them: * Fixed a number of portability problems, among them:
o added O_BINARY flag to open() calls and "b" mode to fopen() o added O_BINARY flag to open() calls and "b" mode to fopen()
calls where necessary calls where necessary
o added support for the many different ways to purge a file o added support for the many different ways to purge a file
pointer and tty file descriptor (src/read.c, src/print.c) pointer and tty file descriptor (src/read.c, src/print.c)
o Integrated the functionality of the `libutil.a' library from * Integrated the functionality of the `libutil.a' library from
older releases into the interpreter kernel (conversion of older releases into the interpreter kernel (conversion of
symbols and lists of symbols to bit masks and vice versa; symbols and lists of symbols to bit masks and vice versa;
routines to manage a pool of weak pointers to objects, used routines to manage a pool of weak pointers to objects, used
mainly by the Elk X extensions mainly by the Elk X extensions
Extensions: Extensions:
o Removed libutil.a (lib/util/*); moved the code into the * Removed libutil.a (lib/util/*); moved the code into the
interpreter kernel (src/terminate.c; src/symbol.c); removed interpreter kernel (src/terminate.c; src/symbol.c); removed
libutil.a from the default load-libraries libutil.a from the default load-libraries
o Renamed lib/misc/c++.[co] to lib/misc/newhandler.[co] (c++.c isn't * Renamed lib/misc/c++.[co] to lib/misc/newhandler.[co] (c++.c isn't
a valid filename under DOS) a valid filename under DOS)
o Added finit function to lib/misc/monitor.c to switch off * Added finit function to lib/misc/monitor.c to switch off
monitoring and write mon.out on exit monitoring and write mon.out on exit
Elk/X: Elk/X:
o The X extensions are no longer pre-linked against the required * The X extensions are no longer pre-linked against the required
X libraries (by means of ld -r); resolving against system libs X libraries (by means of ld -r); resolving against system libs
now always takes place at load time now always takes place at load time
o make-gcontext and copy-gcontext now can be called with a drawable * make-gcontext and copy-gcontext now can be called with a drawable
(i.e. pixmap or window) (i.e. pixmap or window)
o New primitives: alloc-color alloc-named-color * New primitives: alloc-color alloc-named-color
o Removed window-unique-id primitive * Removed window-unique-id primitive
o Fixed a few bugs in the Xt extension (editres now works with * Fixed a few bugs in the Xt extension (editres now works with
Scheme programs); removed an artificial limitation Scheme programs); removed an artificial limitation
o Defined a GC visit function for widgets that visits each widget's * Defined a GC visit function for widgets that visits each widget's
parents and the children of composite widgets parents and the children of composite widgets
o Added support for Motif gadgets * Added support for Motif gadgets
Changes between 1.5 and 2.0:
----------------------------
Changes from release 1.5 to release 2.0 General:
General:
o The build and install process has been improved significantly (see * The build and install process has been improved significantly (see
file INSTALL) file INSTALL)
o Added a new directory "config" that holds the system-specific * Added a new directory "config" that holds the system-specific
configuration files and the site-file configuration files and the site-file
o Added a build shell script and a unified Makefile to all * Added a build shell script and a unified Makefile to all
directories; "build" creates the ``real'' Makefiles containing directories; "build" creates the ``real'' Makefiles containing
system- and site-specific details during the make process system- and site-specific details during the make process
o Added install, lint, clean, and distclean targets to all * Added install, lint, clean, and distclean targets to all
Makefiles Makefiles
o Placed files that are needed during runtime (dynamically loadable * Placed files that are needed during runtime (dynamically loadable
object files, Scheme files, the interpreter itself) into separate object files, Scheme files, the interpreter itself) into separate
directories; added "make install" to put files there directories; added "make install" to put files there
o Simplified porting Elk to new systems (assembly language support * Simplified porting Elk to new systems (assembly language support
and a stack-extending version of "alloca" are no longer required) and a stack-extending version of "alloca" are no longer required)
o Tested on several new systems (IBM RS/6000, HP9000/700, SGI, * Tested on several new systems (IBM RS/6000, HP9000/700, SGI,
Sony; see the file MACHINES) Sony; see the file MACHINES)
o Placed new files CONTRIBUTORS, MIGRATE, and TODO into the toplevel * Placed new files CONTRIBUTORS, MIGRATE, and TODO into the toplevel
directory of the distribution directory of the distribution
o Added a directory "util" that contains tools to simplify porting * Added a directory "util" that contains tools to simplify porting
Elk to new environments and other utilities that are useful on Elk to new environments and other utilities that are useful on
some systems some systems
o Added a directory "scripts" that holds the shell scripts used * Added a directory "scripts" that holds the shell scripts used
to link instances of the interpreter and extensions. to link instances of the interpreter and extensions.
o Removed "stk" directory with test programs (no longer needed) * Removed "stk" directory with test programs (no longer needed)
o Added ANSI C prototypes and C++ "extern C" to all include files * Added ANSI C prototypes and C++ "extern C" to all include files
Interpreter kernel: Interpreter kernel:
o Placed include files into a separate directory (include) * Placed include files into a separate directory (include)
o Reorganized the source files (separate source files for different * Reorganized the source files (separate source files for different
a.out formats and different dynamic loading mechanisms) a.out formats and different dynamic loading mechanisms)
o Changed the way new Scheme objects are allocated to support the * Changed the way new Scheme objects are allocated to support the
generational garbage collector (not yet present in Elk) generational garbage collector (not yet present in Elk)
o Rewrote the code implementing continuations to support full * Rewrote the code implementing continuations to support full
call/cc on all machines call/cc on all machines
o Fixed tail recursion optimization * Fixed tail recursion optimization
o Added support for POSIX signals (as alternative to BSD reliable * Added support for POSIX signals (as alternative to BSD reliable
signals) signals)
o Removed several artificial limitations (such as max. number of * Removed several artificial limitations (such as max. number of
before-GC and after-GC functions and statically GC-linked objects) before-GC and after-GC functions and statically GC-linked objects)
o Removed code that depended on max. number of open files per process * Removed code that depended on max. number of open files per process
o Added bi-directional ports (input-output-ports); new primitive: * Added bi-directional ports (input-output-ports); new primitive:
open-input-output-port open-input-output-port
o New primitive: port-line-number * New primitive: port-line-number
o Reader now prints line number on syntax error * Reader now prints line number on syntax error
o Max. length of a pathname is now determined correctly (using the * Max. length of a pathname is now determined correctly (using the
POSIX incantations if applicable) POSIX incantations if applicable)
o Added code to support dynamic loading under HP-UX (src/load-shl.c) * Added code to support dynamic loading under HP-UX (src/load-shl.c)
o Added code to call extension finalization functions and C++ * Added code to call extension finalization functions and C++
destructors on termination destructors on termination
o Fixed and improved the code to call extension initialization * Fixed and improved the code to call extension initialization
functions and C++ constructors on startup or when loading functions and C++ constructors on startup or when loading
extensions extensions
o Improved the mechanism to suppress initialization of statically * Improved the mechanism to suppress initialization of statically
linked extensions on startup ("dont_init_if_name" in config/site) linked extensions on startup ("dont_init_if_name" in config/site)
o Can use ANSI "atexit" as alternative to redefining "exit" * Can use ANSI "atexit" as alternative to redefining "exit"
o Added option -p to specify load path * Added option -p to specify load path
o Scheme file "initscheme" is now loaded before the toplevel is * Scheme file "initscheme" is now loaded before the toplevel is
loaded loaded
o Changed "rand" to use rand() if random() isn't there * Changed "rand" to use rand() if random() isn't there
o re-entrant-continuations? primitive is no longer needed (returns * re-entrant-continuations? primitive is no longer needed (returns
always #t now) always #t now)
o Added a general mechanism to register termination functions for * Added a general mechanism to register termination functions for
individual objects (e.g. to close files on GC); see src/terminate.c individual objects (e.g. to close files on GC); see src/terminate.c
o linkscheme shell script improved; added code to support the * linkscheme shell script improved; added code to support the
stupid AIX linker stupid AIX linker
o Fixed numerous things that caused lint or "gcc -ansi" to complain * Fixed numerous things that caused lint or "gcc -ansi" to complain
o Changed the dynamic loading, "dump", and a.out symbol table reading * Changed the dynamic loading, "dump", and a.out symbol table reading
code in numerous places to make it work on new systems and to make code in numerous places to make it work on new systems and to make
it more readable and maintainable it more readable and maintainable
Extensions: Extensions:
o Combined lib/util/symbol.o and lib/util/objects.o into new library * Combined lib/util/symbol.o and lib/util/objects.o into new library
libutil.a; put this library into the default "load-libraries" libutil.a; put this library into the default "load-libraries"
o Moved lib/util/string.c and lib/util/string.h into the interpreter * Moved lib/util/string.c and lib/util/string.h into the interpreter
o Moved files from lib directory into new subdirectory "misc" * Moved files from lib directory into new subdirectory "misc"
o Added POSIX sysconf stuff to unix.c to determine max. number of * Added POSIX sysconf stuff to unix.c to determine max. number of
open files per process open files per process
Elk/X: Elk/X:
o Made the code mostly "lint clean" and "gcc -ansi clean" * Made the code mostly "lint clean" and "gcc -ansi clean"
o Fixed bogus variable definitions in xlib.h and xt.h * Fixed bogus variable definitions in xlib.h and xt.h
o Xlib: added support for client-message event * Xlib: added support for client-message event
o Xt: added code to avoid a bug in Motif 1.1.4 * Xt: added code to avoid a bug in Motif 1.1.4
o Xt: added optional "mask" argument to context-add-input * Xt: added optional "mask" argument to context-add-input
o Removed site-dependent information from scm/xwidgets (file is * Removed site-dependent information from scm/xwidgets (file is
now created from scm/xwidgets.src during the build process) now created from scm/xwidgets.src during the build process)
o Renamed widget .d files that were longer than 14 characters; * Renamed widget .d files that were longer than 14 characters;
added ALIASES file for each widget set containing mappings from added ALIASES file for each widget set containing mappings from
real widget names to short names real widget names to short names
Documentation: Documentation:
o Added sub-directory "paper" containing a draft version of a * Added sub-directory "paper" containing a draft version of a
paper about Elk paper about Elk
User-contributed extensions: User-contributed extensions:
o A foreign function interface, an Elk Shell, and a vector extension * A foreign function interface, an Elk Shell, and a vector extension
have been contributed by J. P. Lewis (contrib/zelk). have been contributed by J. P. Lewis (contrib/zelk).
Changes between 1.4 and 1.5:
----------------------------
Changes from release 1.4 to release 1.5 General:
* Added a "contrib" directory for user-contributed extensions
that I have not fully tested and/or integrated into Elk
* Renamed ORIGIN to COPYRIGHT
General: Interpreter kernel:
o Added a "contrib" directory for user-contributed extensions * Added support for the Amiga, A/UX and System V Release 4
that I have not fully tested and/or integrated into Elk (ELF a.out format)
o Renamed ORIGIN to COPYRIGHT * Added special load-library for MIPS (-lc_G0)
* Extension-interface: replaced Val() by Var_Set()/Var_Get()
* Modified load, autoload, and require so that multiple .o-files
can be loaded simultaneously
* Added -1+ as a synonym for 1-
* Bug fixes:
o fixed a GC-related bug
o fixed a bug that occurred when allocating a very large heap
o fixed a bug in case-insensitive string comparison
o fixed a bug in macro "when"
o changed and clarified semantics of print-depth/print-length
* IEEE 1178/R^4RS compatibility:
o replaced close-port by close-input-port and close-output-port
o added primitives caaaar .. cddddr
o added peek-char primitive
o added -i option for case-insensitive operation
* Removed -bc option
* Removed CBREAK-hack in read-char
Interpreter kernel: Elk/X:
o Added support for the Amiga, A/UX and System V Release 4 * Fixed several GC-related bugs (objects belonging to Xlib/Xt are
(ELF a.out format) no longer terminated by garbage collector when unreferenced)
o Added special load-library for MIPS (-lc_G0) * Fixed a bug in the interface to the Grip widget
o Extension-interface: replaced Val() by Var_Set()/Var_Get() * Modified code to load widgets to make use of new capability to
o Modified load, autoload, and require so that multiple .o-files load multiple .o-files
can be loaded simultaneously
o Added -1+ as a synonym for 1-
o Bug fixes:
o fixed a GC-related bug
o fixed a bug that occurred when allocating a very large heap
o fixed a bug in case-insensitive string comparison
o fixed a bug in macro "when"
o changed and clarified semantics of print-depth/print-length
o IEEE 1178/R^4RS compatibility:
o replaced close-port by close-input-port and close-output-port
o added primitives caaaar .. cddddr
o added peek-char primitive
o added -i option for case-insensitive operation
o Removed -bc option
o Removed CBREAK-hack in read-char
Elk/X: Documentation:
o Fixed several GC-related bugs (objects belonging to Xlib/Xt are * Interpreter kernel: documented new functions, clarified
no longer terminated by garbage collector when unreferenced) some sections
o Fixed a bug in the interface to the Grip widget * Xlib/Xt: documented X-related behavior of garbage collector,
o Modified code to load widgets to make use of new capability to pointed out GC-related pitfalls
load multiple .o-files
Documentation: Changes between 1.3 and 1.4:
o Interpreter kernel: documented new functions, clarified ----------------------------
some sections
o Xlib/Xt: documented X-related behavior of garbage collector,
pointed out GC-related pitfalls
Interpreter kernel:
* Support for the NeXT machines added
* New primitive list? provided
* Two bugs in the tail recursion code fixed
* -v option to trace /bin/ld-calls
* man-page written
Changes from release 1.3 to release 1.4 Elk/X:
* Tested under X11R5
* X11R3 and earlier versions are no longer supported
* The HP-widget code has been removed from the distribution
Interpreter kernel: * New Xlib-primitives: install-colormap uninstall-colormap
o Support for the NeXT machines added list-installed-colormaps xlib-release-5-or-later?
o New primitive list? provided
o Two bugs in the tail recursion code fixed
o -v option to trace /bin/ld-calls
o man-page written
Elk/X: * Xt interface now supports actions and accelerator tables
o Tested under X11R5 * Bug in set-context-fallback-resources! fixed
o X11R3 and earlier versions are no longer supported * New Xt-functions: widget-name widget-translate-coordinates
o The HP-widget code has been removed from the distribution application-initialize context-add-action install-accelerators
install-all-accelerators xt-release-5-or-later?
o New Xlib-primitives: install-colormap uninstall-colormap * Support for new widget classes: menubutton panner porthole repeater
list-installed-colormaps xlib-release-5-or-later? simplemenu sme smebsb smeline stripchart tree
* vpaned renamed to paned
o Xt interface now supports actions and accelerator tables * Example programs have been moved into a new examples directory
o Bug in set-context-fallback-resources! fixed with sub-directories for Scheme, Xlib, Xaw, Motif
o New Xt-functions: widget-name widget-translate-coordinates
application-initialize context-add-action install-accelerators
install-all-accelerators xt-release-5-or-later?
o Support for new widget classes: menubutton panner porthole repeater * New Xaw example programs that demonstrate the new widget classes,
simplemenu sme smebsb smeline stripchart tree accelerators, actions, etc.
o vpaned renamed to paned
o Example programs have been moved into a new examples directory Other extensions:
with sub-directories for Scheme, Xlib, Xaw, Motif * Interface to the GNU gdbm-library
o New Xaw example programs that demonstrate the new widget classes,
accelerators, actions, etc.
Other extensions:
o Interface to the GNU gdbm-library