bpt/guile.git
24 years ago* * debugger.scm: New file: Initial version of the Guile debugger
Mikael Djurfeldt [Sat, 11 Sep 1999 13:36:02 +0000 (13:36 +0000)]
* * debugger.scm: New file: Initial version of the Guile debugger
written by Chris Hanson.  (The debugger isn't finished, but is
included in Guile anyway since it is already quite useful.)

24 years ago* * boot-9.scm (top-repl): Use (ice-9 debug) (ice-9 debugger) (ice-9
Mikael Djurfeldt [Sat, 11 Sep 1999 13:35:28 +0000 (13:35 +0000)]
* * boot-9.scm (top-repl): Use (ice-9 debug) (ice-9 debugger) (ice-9
session) (ice-9 threads) (ice-9 regex) from guile-user only if
top-repl is called.  This makes startup time for scripts 30% of
what it was before...  Removed redundant code for loading of
readline.

24 years ago* Makefile.am (ice9_sources): Added debugger.scm.
Mikael Djurfeldt [Sat, 11 Sep 1999 13:35:11 +0000 (13:35 +0000)]
* Makefile.am (ice9_sources): Added debugger.scm.

24 years ago*** empty log message ***
Mikael Djurfeldt [Thu, 9 Sep 1999 21:30:12 +0000 (21:30 +0000)]
*** empty log message ***

24 years ago* procs.c (scm_setter): Signal WTA if handed an entity or operator
Mikael Djurfeldt [Thu, 9 Sep 1999 21:29:25 +0000 (21:29 +0000)]
* procs.c (scm_setter): Signal WTA if handed an entity or operator
lacking a setter.

24 years ago*** empty log message ***
Mikael Djurfeldt [Thu, 9 Sep 1999 20:17:51 +0000 (20:17 +0000)]
*** empty log message ***

24 years ago* feature.c, feature.h: (scm_hook_p, scm_hook_empty_p): New
Mikael Djurfeldt [Thu, 9 Sep 1999 20:16:59 +0000 (20:16 +0000)]
* feature.c, feature.h: (scm_hook_p, scm_hook_empty_p): New
primitives. (Thanks to Greg Badros);
(scm_hook_to_list): New primitive; Hooks are now smobs.

24 years ago*** empty log message ***
Jim Blandy [Thu, 9 Sep 1999 17:52:42 +0000 (17:52 +0000)]
*** empty log message ***

24 years ago1999-09-08 Gary Houston <ghouston@easynet.co.uk>
Gary Houston [Wed, 8 Sep 1999 18:38:09 +0000 (18:38 +0000)]
1999-09-08  Gary Houston  <ghouston@easynet.co.uk>

* stime.c (bdtime2c): rewrite the ASSERTs.  Accept a value
of #f for the 10th vector element to avoid an exception
seen by Bernard Urban.
(scm_mktime): unneeded ASSERT removed.

24 years ago*** empty log message ***
Mikael Djurfeldt [Tue, 7 Sep 1999 09:42:18 +0000 (09:42 +0000)]
*** empty log message ***

24 years ago* eval.c (scm_map, scm_for_each): Converted to dispatch on generic
Mikael Djurfeldt [Tue, 7 Sep 1999 09:40:50 +0000 (09:40 +0000)]
* eval.c (scm_map, scm_for_each): Converted to dispatch on generic
if args don't match.

24 years ago* __scm.h (SCM_WTA_DISPATCH_n, SCM_GASSERTn): New macros.
Mikael Djurfeldt [Tue, 7 Sep 1999 09:40:35 +0000 (09:40 +0000)]
* __scm.h (SCM_WTA_DISPATCH_n, SCM_GASSERTn): New macros.

24 years ago*** empty log message ***
Mikael Djurfeldt [Mon, 6 Sep 1999 21:13:05 +0000 (21:13 +0000)]
*** empty log message ***

24 years ago* numbers.c: Converted comparison operations to dispatch on
Mikael Djurfeldt [Mon, 6 Sep 1999 21:12:15 +0000 (21:12 +0000)]
* numbers.c: Converted comparison operations to dispatch on
generic if args don't match.

24 years agoRegenerated
Mikael Djurfeldt [Mon, 6 Sep 1999 19:57:08 +0000 (19:57 +0000)]
Regenerated

24 years ago*** empty log message ***
Mikael Djurfeldt [Mon, 6 Sep 1999 19:54:51 +0000 (19:54 +0000)]
*** empty log message ***

24 years ago* Makefile.am (ETAGS_ARGS): Added support for GPROC and GPROC1.
Mikael Djurfeldt [Mon, 6 Sep 1999 19:54:01 +0000 (19:54 +0000)]
* Makefile.am (ETAGS_ARGS): Added support for GPROC and GPROC1.

24 years ago*** empty log message ***
Mikael Djurfeldt [Mon, 6 Sep 1999 18:42:03 +0000 (18:42 +0000)]
*** empty log message ***

24 years ago* tests/interp.test: Added tests for evaluation of closure bodies.
Mikael Djurfeldt [Mon, 6 Sep 1999 18:41:03 +0000 (18:41 +0000)]
* tests/interp.test: Added tests for evaluation of closure bodies.

24 years ago*** empty log message ***
Jim Blandy [Mon, 6 Sep 1999 02:14:06 +0000 (02:14 +0000)]
*** empty log message ***

24 years agoPropagate the changes of 2 Sept the rest of the way through.
Jim Blandy [Mon, 6 Sep 1999 02:14:03 +0000 (02:14 +0000)]
Propagate the changes of 2 Sept the rest of the way through.
* configure: Regenerated.
* Makefile.in: Regenerated.  Not sure why this diff is so big.

24 years ago*** empty log message ***
Jim Blandy [Mon, 6 Sep 1999 02:04:48 +0000 (02:04 +0000)]
*** empty log message ***

24 years ago* guile-snarf.c: Deleted. Snarfing should respect CPP
Jim Blandy [Mon, 6 Sep 1999 01:54:51 +0000 (01:54 +0000)]
* guile-snarf.c: Deleted.  Snarfing should respect CPP
conditionals, so it needs to actually run CPP.  Bleah.

24 years agoRandom bug fixes
Jim Blandy [Mon, 6 Sep 1999 01:53:52 +0000 (01:53 +0000)]
Random bug fixes

24 years ago*** empty log message ***
Jim Blandy [Mon, 6 Sep 1999 01:15:46 +0000 (01:15 +0000)]
*** empty log message ***

24 years ago*** empty log message ***
Jim Blandy [Sun, 5 Sep 1999 13:50:38 +0000 (13:50 +0000)]
*** empty log message ***

24 years ago* guile-snarf.in: Be sure to exit with an error if CPP does.
Jim Blandy [Sun, 5 Sep 1999 13:47:23 +0000 (13:47 +0000)]
* guile-snarf.in: Be sure to exit with an error if CPP does.
* Makefile.am (.c.x): Delete the .x file and exit with an error
status if guile-snarf exits with an error status.
* Makefile.in: Regenerated.

24 years ago*** empty log message ***
Jim Blandy [Sun, 5 Sep 1999 12:42:02 +0000 (12:42 +0000)]
*** empty log message ***

24 years ago* snarf.h (SCM_GLOBAL_KEYWORD): Call scm_c_make_keyword, not
Jim Blandy [Sun, 5 Sep 1999 12:41:52 +0000 (12:41 +0000)]
* snarf.h (SCM_GLOBAL_KEYWORD): Call scm_c_make_keyword, not
scm_makekey, which doesn't exist any more.  Guess nobody's using
this.

24 years ago*** empty log message ***
Jim Blandy [Sun, 5 Sep 1999 12:40:31 +0000 (12:40 +0000)]
*** empty log message ***

24 years ago* guile-snarf.c (parse_args): Abort if we haven't handled some
Jim Blandy [Sun, 5 Sep 1999 12:40:11 +0000 (12:40 +0000)]
* guile-snarf.c (parse_args): Abort if we haven't handled some
character type.

24 years ago* acinclude.m4 (GUILE_HEADER_LIBC_WITH_UNISTD): Fix typo in
Jim Blandy [Sun, 5 Sep 1999 12:38:01 +0000 (12:38 +0000)]
* acinclude.m4 (GUILE_HEADER_LIBC_WITH_UNISTD): Fix typo in
variable name.  (Thanks to Bill Schottstaedt.)
* aclocal.m4: Regenerated.

24 years agoTypo
Jim Blandy [Sun, 5 Sep 1999 06:46:03 +0000 (06:46 +0000)]
Typo

24 years ago*** empty log message ***
Jim Blandy [Sun, 5 Sep 1999 06:43:33 +0000 (06:43 +0000)]
*** empty log message ***

24 years ago* guile-snarf.c: New implementation of guile-snarf, meant to be
Jim Blandy [Sun, 5 Sep 1999 06:43:13 +0000 (06:43 +0000)]
* guile-snarf.c: New implementation of guile-snarf, meant to be
more robust than the shell script.  I think it's complete, but I
haven't tested it at all, and I haven't changed the build process
to actually use it.  We should compare its output against that of
the existing shell script, for all source files.

24 years agoAdd 1999 to copyright years.
Jim Blandy [Sun, 5 Sep 1999 06:42:46 +0000 (06:42 +0000)]
Add 1999 to copyright years.

24 years agoRemove debugging output.
Jim Blandy [Fri, 3 Sep 1999 08:00:14 +0000 (08:00 +0000)]
Remove debugging output.

24 years ago*** empty log message ***
Jim Blandy [Fri, 3 Sep 1999 07:54:22 +0000 (07:54 +0000)]
*** empty log message ***

24 years ago* load.c (scm_search_path): If the filename has any extension at
Jim Blandy [Fri, 3 Sep 1999 07:54:06 +0000 (07:54 +0000)]
* load.c (scm_search_path): If the filename has any extension at
all, ignore the entire list of extensions.  Also, don't check whether
the file is accessible.  If the file exists, accessible or not, we
should return it.  Inaccessible files should cause an error later.
(Thanks to Keisuke Nishida for the suggestions.)

24 years ago*** empty log message ***
Jim Blandy [Fri, 3 Sep 1999 07:37:33 +0000 (07:37 +0000)]
*** empty log message ***

24 years ago* tests/load.test: New test file.
Jim Blandy [Fri, 3 Sep 1999 07:37:23 +0000 (07:37 +0000)]
* tests/load.test: New test file.

24 years ago* tests/multilingual.nottest: New file, which we will turn into a
Jim Blandy [Fri, 3 Sep 1999 07:37:12 +0000 (07:37 +0000)]
* tests/multilingual.nottest: New file, which we will turn into a
test file once we actually have multilingual support to test.

24 years agoFix copyright info.
Jim Blandy [Fri, 3 Sep 1999 07:36:49 +0000 (07:36 +0000)]
Fix copyright info.

24 years ago*** empty log message ***
Jim Blandy [Fri, 3 Sep 1999 01:24:56 +0000 (01:24 +0000)]
*** empty log message ***

24 years ago* acinclude.m4 (GUILE_HEADER_LIBC_WITH_UNISTD): Fix typo in
Jim Blandy [Fri, 3 Sep 1999 01:24:40 +0000 (01:24 +0000)]
* acinclude.m4 (GUILE_HEADER_LIBC_WITH_UNISTD): Fix typo in
variable name.  (Thanks to Bill Schottstaedt.)

24 years agoAdded prototype for on_exit
Mikael Djurfeldt [Thu, 2 Sep 1999 15:15:12 +0000 (15:15 +0000)]
Added prototype for on_exit

24 years agoRegenerated
Mikael Djurfeldt [Thu, 2 Sep 1999 14:52:32 +0000 (14:52 +0000)]
Regenerated

24 years ago*** empty log message ***
Mikael Djurfeldt [Thu, 2 Sep 1999 14:52:02 +0000 (14:52 +0000)]
*** empty log message ***

24 years ago* gc.c (cleanup, scm_init_storage): Use on_exit if present and
Mikael Djurfeldt [Thu, 2 Sep 1999 14:51:51 +0000 (14:51 +0000)]
* gc.c (cleanup, scm_init_storage): Use on_exit if present and
atexit not available.  (sunos4.1.4 needs it.)

24 years ago* configure.in: Test for presence of function on_exit.
Mikael Djurfeldt [Thu, 2 Sep 1999 14:51:32 +0000 (14:51 +0000)]
* configure.in: Test for presence of function on_exit.

24 years ago*** empty log message ***
Mikael Djurfeldt [Thu, 2 Sep 1999 09:16:58 +0000 (09:16 +0000)]
*** empty log message ***

24 years ago*** empty log message ***
Jim Blandy [Wed, 1 Sep 1999 04:23:41 +0000 (04:23 +0000)]
*** empty log message ***

24 years agoPut off deprecating most functions until 1.4; not enough time has
Jim Blandy [Wed, 1 Sep 1999 04:21:42 +0000 (04:21 +0000)]
Put off deprecating most functions until 1.4; not enough time has
elapsed between releases to make it fair to take out those functions
now.

24 years agoI take it all back --- bcopy does handle overlapping source and
Jim Blandy [Wed, 1 Sep 1999 02:52:27 +0000 (02:52 +0000)]
I take it all back --- bcopy does handle overlapping source and
destination areas correctly.  At least on every system I could
find.  But it is better to use AC_REPLACE_FUNCS than to introduce
new CPP conditionals.
* memmove.c: New file, implementing memmove in terms of bcopy.
* scmconfig.h.in: Regenerated.

24 years ago*** empty log message ***
Jim Blandy [Wed, 1 Sep 1999 02:51:52 +0000 (02:51 +0000)]
*** empty log message ***

24 years agoRegenerated. Seems like conflicting versions of automake installed...
Jim Blandy [Wed, 1 Sep 1999 02:50:18 +0000 (02:50 +0000)]
Regenerated.  Seems like conflicting versions of automake installed...

24 years ago* configure.in: Use AC_REPLACE_FUNCS to grab libguile/memmove.c if
Jim Blandy [Wed, 1 Sep 1999 02:48:14 +0000 (02:48 +0000)]
* configure.in: Use AC_REPLACE_FUNCS to grab libguile/memmove.c if
the system doesn't have memmove.  Don't test for memmove and bcopy
with AC_CHECK_FUNCS.
* configure: Regenerated.

24 years agoAllocators should use the `void *' type for generic pointers.
Jim Blandy [Wed, 1 Sep 1999 02:47:30 +0000 (02:47 +0000)]
Allocators should use the `void *' type for generic pointers.
* gc.c (scm_must_malloc, scm_must_realloc, scm_must_free): Change
argument and return types.
* gc.h: Corresponding changes to prototypes.
(Thanks to Forcer.)

24 years ago*** empty log message ***
Jim Blandy [Tue, 31 Aug 1999 13:37:40 +0000 (13:37 +0000)]
*** empty log message ***

24 years ago* numbers.c (scm_init_numbers): Claim to support the `complex'
Jim Blandy [Tue, 31 Aug 1999 13:37:28 +0000 (13:37 +0000)]
* numbers.c (scm_init_numbers): Claim to support the `complex'
feature, as expected by (ice-9 format).  (Thanks to Ceri Storey.)

24 years ago*** empty log message ***
Jim Blandy [Tue, 31 Aug 1999 13:04:21 +0000 (13:04 +0000)]
*** empty log message ***

24 years ago* Makefile.am (check-local): Set GUILE_LOAD_PATH so the tests can
Jim Blandy [Tue, 31 Aug 1999 13:04:06 +0000 (13:04 +0000)]
* Makefile.am (check-local): Set GUILE_LOAD_PATH so the tests can
find (ice-9 boot-9) when Guile was compiled in a separate
directory from the source.  (Thanks to Rodney Brown.)
* Makefile.in: Regenerated.

24 years ago*** empty log message ***
Jim Blandy [Tue, 31 Aug 1999 08:49:55 +0000 (08:49 +0000)]
*** empty log message ***

24 years ago* procs.c (scm_make_subr_opt): Fix typo. Remember to multiple
Jim Blandy [Tue, 31 Aug 1999 08:49:21 +0000 (08:49 +0000)]
* procs.c (scm_make_subr_opt): Fix typo.  Remember to multiple
table lengths by the size of a single element when growing the
table.

24 years ago*** empty log message ***
Jim Blandy [Tue, 31 Aug 1999 08:06:29 +0000 (08:06 +0000)]
*** empty log message ***

24 years ago*** empty log message ***
Mikael Djurfeldt [Mon, 30 Aug 1999 12:27:29 +0000 (12:27 +0000)]
*** empty log message ***

24 years ago*** empty log message ***
Jim Blandy [Mon, 30 Aug 1999 07:46:07 +0000 (07:46 +0000)]
*** empty log message ***

24 years ago* tests/strings.test: New test file.
Jim Blandy [Mon, 30 Aug 1999 07:46:01 +0000 (07:46 +0000)]
* tests/strings.test: New test file.

24 years agofirst cut
Jim Blandy [Mon, 30 Aug 1999 07:39:21 +0000 (07:39 +0000)]
first cut

24 years ago*** empty log message ***
Jim Blandy [Mon, 30 Aug 1999 07:02:46 +0000 (07:02 +0000)]
*** empty log message ***

24 years ago* gh_data.c (gh_set_substr): Revert change of 1999-08-29; bcopy is
Jim Blandy [Mon, 30 Aug 1999 07:02:25 +0000 (07:02 +0000)]
* gh_data.c (gh_set_substr): Revert change of 1999-08-29; bcopy is
not a correct substitute for memmove, because it doesn't handle
overlapping source and destination areas on many platforms.
Overlaps are the primary reason to use memmove in the first place.
* ports.c (scm_ungetc): Same.
* strop.c (scm_substring_move_x): Same.

24 years agoFix up downloading addresses and filenames.
Jim Blandy [Mon, 30 Aug 1999 06:42:28 +0000 (06:42 +0000)]
Fix up downloading addresses and filenames.

24 years ago*** empty log message ***
Jim Blandy [Mon, 30 Aug 1999 03:31:23 +0000 (03:31 +0000)]
*** empty log message ***

24 years ago*** empty log message ***
Mikael Djurfeldt [Mon, 30 Aug 1999 02:49:52 +0000 (02:49 +0000)]
*** empty log message ***

24 years agoRegenerated
Mikael Djurfeldt [Mon, 30 Aug 1999 02:49:35 +0000 (02:49 +0000)]
Regenerated

24 years agoMoved scm_memoize_method back to eval.c.
Mikael Djurfeldt [Mon, 30 Aug 1999 02:18:35 +0000 (02:18 +0000)]
Moved scm_memoize_method back to eval.c.

24 years ago* eval.c (SCM_CEVAL): Duplicated the method dispatch code at the
Mikael Djurfeldt [Mon, 30 Aug 1999 02:18:00 +0000 (02:18 +0000)]
* eval.c (SCM_CEVAL): Duplicated the method dispatch code at the
SCM_IM_DISPATCH form instead of calling scm_mcache_lookup_cmethod
since that cuts down the time for type dispatch by 50%.

24 years ago*** empty log message ***
Mikael Djurfeldt [Mon, 30 Aug 1999 02:15:07 +0000 (02:15 +0000)]
*** empty log message ***

24 years ago* struct.c, struct.h (scm_struct_free_0, scm_struct_free_light,
Mikael Djurfeldt [Mon, 30 Aug 1999 02:14:47 +0000 (02:14 +0000)]
* struct.c, struct.h (scm_struct_free_0, scm_struct_free_light,
scm_struct_free_standard, scm_struct_free_entity): Declared to
return scm_sizet instead of size_t.

24 years ago* gdbint.c, strports.c: #include <unistd.h>. (SEEK_SET is defined
Mikael Djurfeldt [Mon, 30 Aug 1999 02:14:36 +0000 (02:14 +0000)]
* gdbint.c, strports.c: #include <unistd.h>.  (SEEK_SET is defined
there on sunos4.1.4.)

24 years ago* gc.c (scm_init_storage): Skip registration of cleanup on systems
Mikael Djurfeldt [Mon, 30 Aug 1999 02:13:45 +0000 (02:13 +0000)]
* gc.c (scm_init_storage): Skip registration of cleanup on systems
which lack atexit.  (Is it important that cleanup is made
properly? Maybe we should replace all `exit' with `scm_exit' and
call cleanup there?)

24 years ago* configure.in: Test for atexit.
Mikael Djurfeldt [Mon, 30 Aug 1999 02:13:22 +0000 (02:13 +0000)]
* configure.in: Test for atexit.

24 years agoRegenerated
Mikael Djurfeldt [Sun, 29 Aug 1999 22:24:07 +0000 (22:24 +0000)]
Regenerated

24 years ago* acinclude.m4: Updated. (Thanks to Karl Eichwalder.)
Mikael Djurfeldt [Sun, 29 Aug 1999 22:23:33 +0000 (22:23 +0000)]
* acinclude.m4: Updated.  (Thanks to Karl Eichwalder.)

24 years ago*** empty log message ***
Mikael Djurfeldt [Sun, 29 Aug 1999 22:21:38 +0000 (22:21 +0000)]
*** empty log message ***

24 years ago* acinclude.m4: Updated. (Thanks to Karl Eichwalder.)
Mikael Djurfeldt [Sun, 29 Aug 1999 21:55:12 +0000 (21:55 +0000)]
* acinclude.m4: Updated.  (Thanks to Karl Eichwalder.)

24 years ago*** empty log message ***
Mikael Djurfeldt [Sun, 29 Aug 1999 21:08:38 +0000 (21:08 +0000)]
*** empty log message ***

24 years agoFix
Mikael Djurfeldt [Sun, 29 Aug 1999 21:07:04 +0000 (21:07 +0000)]
Fix

24 years ago*** empty log message ***
Mikael Djurfeldt [Sun, 29 Aug 1999 19:30:00 +0000 (19:30 +0000)]
*** empty log message ***

24 years agoFix of last fix
Mikael Djurfeldt [Sun, 29 Aug 1999 19:26:53 +0000 (19:26 +0000)]
Fix of last fix

24 years ago*** empty log message ***
Mikael Djurfeldt [Sun, 29 Aug 1999 18:32:24 +0000 (18:32 +0000)]
*** empty log message ***

24 years ago*** empty log message ***
Mikael Djurfeldt [Sun, 29 Aug 1999 18:17:58 +0000 (18:17 +0000)]
*** empty log message ***

24 years ago* numbers.c (scm_lcm): Bugfix: BIGDIG --> SCM_BIGDIG;
Mikael Djurfeldt [Sun, 29 Aug 1999 18:15:09 +0000 (18:15 +0000)]
* numbers.c (scm_lcm): Bugfix: BIGDIG --> SCM_BIGDIG;
Account for the case when second argument is unbound.

24 years ago* strorder.c (scm_string_less_p, scm_string_ci_less_p): Bugfix.
Mikael Djurfeldt [Sun, 29 Aug 1999 18:04:55 +0000 (18:04 +0000)]
* strorder.c (scm_string_less_p, scm_string_ci_less_p): Bugfix.
(Thanks to Karoly Lorentey.)

24 years agoRegenerated
Mikael Djurfeldt [Sun, 29 Aug 1999 18:04:43 +0000 (18:04 +0000)]
Regenerated

24 years ago* gh_data.c, ports.c, strop.c: Alternatively use bcopy if memmove
Mikael Djurfeldt [Sun, 29 Aug 1999 18:04:28 +0000 (18:04 +0000)]
* gh_data.c, ports.c, strop.c: Alternatively use bcopy if memmove
isn't present.  (Thanks to suzukis@file.phys.tohoku.ac.jp.)

* ports.c: Use ANSI C prototypes in definitions.  (Thanks to
Bernard Urban.)

24 years ago* gh_data.c, ports.c, strop.c: Alternatively use bcopy if memmove
Mikael Djurfeldt [Sun, 29 Aug 1999 18:04:11 +0000 (18:04 +0000)]
* gh_data.c, ports.c, strop.c: Alternatively use bcopy if memmove
isn't present.  (Thanks to suzukis@file.phys.tohoku.ac.jp.)

24 years ago* filesys.c (scm_stat2scm): Conditionally use S_ISLNK.
Mikael Djurfeldt [Sun, 29 Aug 1999 18:03:39 +0000 (18:03 +0000)]
* filesys.c (scm_stat2scm): Conditionally use S_ISLNK.

24 years ago* dynl-dl.c (RTLD_GLOBAL): Define if non-existent. (Thanks to
Mikael Djurfeldt [Sun, 29 Aug 1999 18:03:26 +0000 (18:03 +0000)]
* dynl-dl.c (RTLD_GLOBAL): Define if non-existent.  (Thanks to
Bernard Urban and Ian Grant.)

24 years ago* Makefile.am (libguile_la_LDFLAGS): Bumped libguile version
Mikael Djurfeldt [Sun, 29 Aug 1999 18:03:02 +0000 (18:03 +0000)]
* Makefile.am (libguile_la_LDFLAGS): Bumped libguile version
again.  (1.3.4 will be binary incompatible with 1.3.2 because of a
change in the representation of entities and operators.)