Branch: stable (switch to development),

version 9.2.7 9.2.6 9.2.5 9.2.4 9.2.3 9.2.2 9.2.1 9.2.0 9.0.4 9.0.3 9.0.2 9.0.1 9.0.0 8.4.3 8.4.2 8.4.1 8.4.0 8.2.4 8.2.3 8.2.2 8.2.1 8.2.0 8.2.0-alpha 8.0.3 8.0.2 8.0.1 8.0.0 7.6.4 7.6.3 7.6.2 7.6.1 7.6.0 7.6.0-rc2 7.6.0-rc1 7.4.2 7.4.1 7.4.0-rc2 7.4.0-rc1 7.2.3 7.2.2 7.2.1 7.2.0 6.6.6 6.6.5 6.6.4 6.6.3 6.6.2 6.6.1 6.6.0 6.4.1 6.4.0 6.2.6 6.2.5 6.2.4 6.2.3 6.2.2 6.2.1 6.2.0 6.0.2 6.0.1 6.0.0 5.10.6 5.10.5 5.10.4 5.10.3 5.10.2 5.10.1 5.10.0 5.8.3 5.8.2 5.8.1 5.8.0 5.8.0-rc1 5.6.64 5.6.63 5.6.62 5.6.61 5.6.60 5.6.59 5.6.58 5.6.57 5.6.56 5.6.55 5.6.54 5.6.53 5.6.52 5.6.51 5.6.50 5.6.49 5.6.48 5.6.47 5.6.46 5.6.45 5.6.44 to version 9.2.7 9.2.6 9.2.5 9.2.4 9.2.3 9.2.2 9.2.1 9.2.0 9.0.4 9.0.3 9.0.2 9.0.1 9.0.0 8.4.3 8.4.2 8.4.1 8.4.0 8.2.4 8.2.3 8.2.2 8.2.1 8.2.0 8.2.0-alpha 8.0.3 8.0.2 8.0.1 8.0.0 7.6.4 7.6.3 7.6.2 7.6.1 7.6.0 7.6.0-rc2 7.6.0-rc1 7.4.2 7.4.1 7.4.0-rc2 7.4.0-rc1 7.2.3 7.2.2 7.2.1 7.2.0 6.6.6 6.6.5 6.6.4 6.6.3 6.6.2 6.6.1 6.6.0 6.4.1 6.4.0 6.2.6 6.2.5 6.2.4 6.2.3 6.2.2 6.2.1 6.2.0 6.0.2 6.0.1 6.0.0 5.10.6 5.10.5 5.10.4 5.10.3 5.10.2 5.10.1 5.10.0 5.8.3 5.8.2 5.8.1 5.8.0 5.8.0-rc1 5.6.64 5.6.63 5.6.62 5.6.61 5.6.60 5.6.59 5.6.58 5.6.57 5.6.56 5.6.55 5.6.54 5.6.53 5.6.52 5.6.51 5.6.50 5.6.49 5.6.48 5.6.47 5.6.46 5.6.45 5.6.44

SWI-Prolog Changelog from version 8.4.3 to 9.0.4

[Jan 27 2023]

• TEST: Run unsafe thread_wait tests only if SWIPL_TEST_FAIL_ON_UNLIKELY is set to y.
• FIXED: `1Inf` should be invalid syntax.

[Jan 26 2023]

• DOC: Foreign language details. Notable PL_raise_exception().

[Jan 23 2023]

• FIXED: With float_undefined set to nan, 0/0 must return NaN.

[Jan 20 2023]

• FIXED: with_output_to/3 to flush the streams before finishing the capture.
• ADDED: Sdprintf() and friends to accept the t integer size specified for ptrdiff_t.

[Jan 19 2023]

• FIXED: Allow signal handling and e.g. call_with_time_limit/2 on raw terminal input.
• FIXED: ansi_hyperlink/3. Also unify ansi_hyperlink/3 and ansi_hyperlink/2.
• FIXED: trace/2 using -all to stop considering the predicate traced.
• FIXED: prolog_stack_frame_property/2 for the predicate property.

[Jan 17 2023]

• FIXED: Windows: string_length/2 did not handle UTF16 surrogate pairs correctly.
• DOC: Document PL_write_term()

[Jan 16 2023]

• FIXED: Possible deadlock in a transaction commit due to different ordering in locking L_GENERATION and L_PREDICATE locks.

[Jan 14 2023]

• DOC: fix minor typo

[Jan 13 2023]

• FIXED: Issue#195: cmpFloatNumbers() for NaN.

[Jan 12 2023]

• FIXED: Implement A_MPZ and A_MPQ instructions when using LibBF binding. This fixes using such numbers in expressions compiled with optimization enabled. Reported by Rick Workman.

[Jan 11 2023]

• FIXED: Issue#1091: optimised compilation of clauses containing big integers or rational numbers in expressions.
• FIXED: Issue#1092: term_hash/2,4 crashes on Unicode strings.
• ADDED: list_debug_topics/1 to search, only print active topics, etc. This predicate now uses print_message/2. debugging/0 is hooked to show the active topics.
• ADDED: debugging/0: allow extensions using prolog_debug_tools:debugging_hook/0
• DOC: Fixed PL_Q_CATCH_EXCEPTION interaction with the debugger.
• DOC: Reviewed and updated foreign language sections on exception handling. Thanks to Peter Ludemann for pointing the many parts of the docs that were unclear or outdated.

[Jan 10 2023]

• DOC: Added some details for PL_exception()

[Jan 5 2023]

• FIXED: Issue#1087: crash on inlined unification against a rational number.

[Dec 28 2022]

• DOC: rational/1 and rationalize/1 use current notation.

[Dec 19 2022]

• PORT: msys2, add %MINGW_PREFIX%/bin to dll path
• PORT: msys2, do not copy system dlls into home
• ADDED: Prolog flag msys2 to detect the MSYS2 installation.

[Dec 18 2022]

• PORT: Fix crash in walking the Prolog stack for gcc 12 on arm 32-bit. This is caused by padding added in `struct queryFrame between saved_environment and top_frame`

[Dec 16 2022]

• PORT: Fixed rationalize/1 and cmpFloatNumbers() to fail due to gcc optimization using internal wide float registers rather than comparing 64 bit doubles. Not entirely sure this is our mistake or within GCC's claim to work with the extended float registers. Bottom line is that comparing a double (from memory, so 64 bits) to the result of a computation may return non-equal even if the extended float when forced to 64 bits is equal. This problem surfaced in i386 using gcc 12.2.0.

[Dec 15 2022]

• FIXED: Issue#119: library(apply_macros) goal expansion for phrase/3 using a partial terminal was too greedy. Uwe Neumerkel.

[Dec 12 2022]

• FIXED: Initialise Prolog flag encoding from locale name. Internal UTF-8 decoding is typically faster than the C library multibyte operations.

[Dec 11 2022]

• FIXED: clause/2,3: possible GC crash when dealing with moved unification. We cannot have references to the local stack and thus we must allocate the support variable on the global stack.

[Dec 8 2022]

• ENHANCED: If one of the standard streams of a thread has been closed, rebind the stream to the original process streams. This can happen if, for example, we create a thread while output is redirected to some stream. If now this stream is closed the thread ends up with a closed standard stream.

[Dec 6 2022]

• PORT: Build MacOS bundle using LibBF based big integers. Somehow the build for the universal binaries covering a large series of MacOS versions (since 10.14) breaks after uograde to MacOS Ventura when linking against libGMP. The results are random segfaults, bus errors and memory corruption.
• PORT: Build MacOS bundle using LibBF based big integers. Somehow the build for the universal binaries covering a large series of MacOS versions (since 10.14) breaks after uograde to MacOS Ventura when linking against libGMP. The results are random segfaults, bus errors and memory corruption.

[Dec 5 2022]

• FIXED: Possibly crash in breakpoint callback after GC/shift.
• TEST: Make thread signal test behave better under high loads.

[Dec 4 2022]

• PORT: Make C backtraces work on ARM systems that use libunwind or glibc backtrace().
• FIXED: Error handling if prolog_frame_attribute/3 using parent_frame runs out of stack. Careful review of this function after reported crash on 32 bit arm. Might be due to a stack shift in this code, but I doubt it and cannot reproduce the issue. Surely the current code is safer.
• DOC: Document prolog_frame_attribute/2 with parent_frame(-Next)
• TEST: test may result in another error on 32-bit platforms.

[Dec 2 2022]

• ADDED: library(streams). Intended for various tricks in capturing and redirecting streams. Currently only provides with_output_to/3 that extends with_output_to/2 to allow capturing user_output and user_error.

[Dec 1 2022]

• FIXED: WASM shell: failure after clearing output.

[Nov 30 2022]

• UPDATE: Merge devel@b70e1737c01220e258830db17ade553164d5d9d1 - Fixed SSL password hash compatibility - Fixed race condition for creating functor objects - Fixed data corruption in clause/2 when decompiling the head - Fixed updating break table when removing a clause - Updated sweep - Made all sources stricty C11 compatible (gcc -std=c11 -pedantic)
• FIXED: breakpoint removal when retracting a clause.
• PORT: Provide MSVC alternatives for MinGW runtime support.
• DEBUG: Dump Prolog stack on assertion error.
• PORT: Drop old MSVC #ifdef code in favour of <inttypes.h> on all platforms.

[Nov 29 2022]

• PORT: Strict C11 support for VM instruction argument declaration.
• PORT: Avoid GCC empty struct and named variadic arguments for cpp to make pl-wam.c compile under strict C11 standard. This does not solve full portability. pl-codetable.c suffers from related problems.
• PORT: Fixed compilation for Windows after providing the libswipl patches

[Nov 28 2022]

• FIXED: Race condition between destroying indexes of thread-local predicates on thread exit and the clause garbage collector.
• FIXED: Race condition for creating a functor. We must add the functor to the global functor array before we can declare it valid.
• FIXED: thread_wait/2: race condition in updating threads waiting for a module.
• FIXED: clause/2: possible error handling H_LIST_FF if there is a GC between handling the head and tail.

[Nov 27 2022]

• BUILD: Simplify configuration detection in the build environment by exploiting the libswipl flag if it is read-only (and thus reliable).

[Nov 26 2022]

• ADDED: swipl --dump-runtime-variables to provide the name of the shared object in PLLIBSWIPL.
• ENHANCED: Set the Prolog flag libswipl based on dladdr() when possible.

[Nov 25 2022]

• PORT: The C11 standard does not allow for empty structs.

[Nov 24 2022]

• SNAP: CMAKE_INSTALL_LIBDIR seems undefined inside snapcraft, causing the build to fail.
• SNAP: Latest snapcraft sets LD_LIBRARY_PATH to provide access to the "parts". We should not consider this a broken environment.
• DOC: Fixed LaTeX issues blocking the generation of the PDF manual.
• TEST: Avoid name conflict between two tests to make test_installation/0 work again.
• ENHANCED: library(main) to delay looking for tspy/1 or gspy/1 until the option is activated.
• FIXED: Make X11 event dispatching work in single threaded version.
• TEST: Avoid testing stuff that requires threads in the single threaded version.
• CLEANUP: Do not compile code required for multi-threaded loading in the single threaded version.

[Nov 23 2022]

• DOC: format/1-3: document behavior of `~0f`.
• CONFIG: Do not install thread libraries for single threaded version.
• MODIFIED: When ISO mode is enabled, unknown options are result in a domain error. This now also holds if the option argument is a dict.
• MODIFIED: Ssprintf() and Ssnprintf() functions now use UTF-8 encoding (used to be ISO Latin 1), so they can handle Unicode.
• ENHANCED: Use xref_source/2 for fetching PlDoc comments from loaded sources. Patch by @swi.
• PORT: Provide backtrace with line numbers on MacOS using atos as replacement for addr2line.

[Nov 21 2022]

• ADDED: prolog_interrupt/0 to make a thread behave as if SIGINT is received using thread_signal/2.
• FIXED: Do not reload system files to get their documentation.

[Nov 19 2022]

• PORT: More integer passing problems over vararg functions.
• FIXED: Prolog flag pid on some 64 bit platforms.
• PORT: Use CMake to test for <threads.h> support.
• MAINTENANCE: Provide a Prolog flag asan when the system is compiled with AddressSanitizer.

[Nov 16 2022]

• INSTALL: When using -DSWIPL_INSTALL_IN_LIB, make sure that the CMake export files can be relocated.

[Nov 14 2022]

• WASM: Avoid undefined HTMLCollection.toList(). Emacs whitespace update
• MODIFIED: pack_install/1 and friends to pass all environment variables to the tools that may be executed to build the pack.
• PORT: Issue#1070: pack_install/1: Pass PKG_CONFIG_PATH to build tools

[Nov 13 2022]

• FIXED: format/2,3: manage proper arithmetic environment for expressions.

[Nov 9 2022]

• PORT: Make LibBF code compile for Clang

[Nov 8 2022]

• FIXED: fetch/restore of Mersenne Twister random state. Also reduced the size of the state.
• MODIFIED: **/2 and ^/2: If the power can be done using rational arithmetic but the numbers are too big, make the behaviour depend on max_rational_size_action. When float, try to continue after float conversion, else raise a resource error.
• FIXED: **/2 and ^/2 overflow checking when computing the power of two rational numbers.

[Nov 7 2022]

• ENHANCED: Prefer mpz_sgn() over mpz_cmp_ui() to 0.
• ENHANCED: Key generation for bignum and rational clause indexing

[Nov 4 2022]

• ADDED: BF_FTOA_PL_QUIRKS for correct float formatting.

[Nov 3 2022]

• MODIFIED: CMake target_link_swipl() now removes the lib prefix.
• PORT: Updated MacOS dependencies
• FIXED: swipl.cmake outside pack_rebuild/2 context gets linking against libswipl wrong.

[Oct 30 2022]

• FIXED: Issue#163: -s and -l files were loaded before the argv Prolog flag is cleaned.

[Oct 26 2022]

• ADDED: prolog_walk_code/1: option walk_meta_predicates(+Boolean) to prevent the code walker from considering meta-predicates. There are few cases where this is interesting, but it was needed for constructing a s(CASP) dependency graph.

[Oct 24 2022]

• DOC: Document (part of) the PL_cvt_i_*() functions and improve documentation for several of the PL_get_*() and PL_get_*_ex() functions.

[Oct 22 2022]

• ADDED: PL_get_bool() now also accepts the integers (0,1)

[Oct 21 2022]

• PORT: set RPATH correctly on MacOS for native libs in packages

[Oct 19 2022]

• ADDED: PL_cvt_i_llong() PL_cvt_i_ulong() and PL_cvt_i_bool(). This completes the types supported by these functions.

[Oct 20 2022]

• ADDED: listing/1,2 to also accept a clause reference as entity to list.

[Oct 11 2022]

• INSTALL: control registry view with CPACK_NSIS_ONINIT_REGVIEW

[Oct 18 2022]

• FIXED: Possible crash due to mistake in handling `--home` changes.

[Oct 17 2022]

• FIXED: Issue in recursion checking of print_message/2.
• PORT: Include Emacs interface in MacOS bundle
• MODIFIED: Removed an ancient mechanism for finding the Prolog home directory from a magic string in the binary. Changed plain -home to print the home directory and exit (used to ignore and run).

[Oct 15 2022]

• WASM: Maintain a stack of open queries such that we can detect when we act on a query that is not the innermost. Currently only prints to the console.
• WASM: By default load scripts and files into the user module.
• PORT: Emscripten does not set CMAKE_EXECUTABLE_FORMAT. As all this is meaningless with statically linked WASM version we do not set the executable_format and libswipl flags
• ADDED: prolog_walk_code/3 option on_edge which is similar to on_trace, but provide easier to understand source locations.

[Oct 14 2022]

• FIXED: Add '$seek_list'/4 to library(sandbox). Breaks nth1/3 and nth0/3.
• FIXED: Make Prolog backtrace work in ISO mode.

[Oct 12 2022]

• FIXED: Big integer to float (mpz_to_double()) to_nearest, half to even rounding and also a couple of minor cosmetic changes.

[Oct 13 2022]

• ADDED: Extend check_installation/0 with sweep.

[Oct 11 2022]

• ADDED: new flags executable_format and libswipl New read-only Prolog flags determined at swipl compile time. These flags are intended to allow package sweep to determine if libswipl needs to be loaded ahead of sweep-module (when executable_format=elf), and if so to locate libswipl.

[Oct 12 2022]

• WASM: Shell: make edit/1 work to show source of the libraries.
• WASM: Shell: allow collapsing the answers to a query.
• WASM: Enhanced :=/2: get global variables using eval() such that it also works on Node and raise a Prolog exception in case something goes wrong.
• WASM: Shell: add splitter to allow changing the distribution of the output and editor.

[Oct 11 2022]

• WASM: make shell demo console output more structured.

[Oct 10 2022]

• WASM: Shell: add examples from the server
• WASM: Added fetch/3 as public function of library(wasm).
• WASM: Cleanup js_script/2 to simply call _ := eval(String). This also makes this work in Node.
• WASM: Make Prolog.call() and Prolog.forEach() call by default in the user module rather than system.

[Oct 12 2022]

• FIXED: help/1: avoid problems with modules that are also section labels. @swi.

[Oct 7 2022]

• WASM: Use CodeMirror in shell.html (from CDN such that we do not need to grow our distribution).

[Oct 9 2022]

• WASM: Make local compilation not use sig_atomic/1 as that breaks yielding and we have no signals anyway.
• ADDED: Support conditional compilation in boot/init.pl

[Oct 8 2022]

• DOC: updated manual section about GNU Emacs interfaces
• ADDED: flag libswipl_dir holding the installation dir of libswipl

[Oct 7 2022]

• WASM: Extend data transformation in :=/2 and improve documentation.
• FIXED: WASM: await if the promise returns a compound term or list.
• WASM: :=/2 should pass a list as data instead as a call on '[|]'(h,t).

[Oct 6 2022]

• WASM: Documentation updates and LaTeX fixes to the docs.
• WASM: Do not use undocumented interfaces in test/demo.
• WASM: Issue#1052: make output of Prolog.query().once() easier to handle.
• FIXED: help/1 for normal built-in predicates (broke after support for user predicates). Patch by @swi.

[Oct 4 2022]

• ADDED: Colour test/1 and test/2 heads and classify them as tests when inside a unit test body.
• ADDED: library(prolog_xref): Make aware of unit tests
• ADDED: Allow help/1 on user predicates. Contributed by @swi
• ADDED: make_reload_file/1 to make correct reloading of a file public.

[Oct 3 2022]

• TEST: Add additional float rounding test cases for various integer sub-types.
• ENHANCED: New (faster) function for converting bigints (MPZ) to float Also includes minor adjustments for some mpz_fdiv rounding modes.
• DOC: Fixed LaTeX errors

[Sep 23 2022]

• ENHANCED: Replace mpz_fdiv() with a version that rounds to nearest.
• CLEANUP: Introduce mpz_to_double()

[Oct 2 2022]

• FIXED: Added missing import for pi_head/2 in library(prolog_xref).

[Oct 1 2022]

• PORT: swipl --abi-version: VM signature hash depended on big/little endian.

[Sep 28 2022]

• ADDED: PL_atom_mbchars() to extract text from an atom in various encodings.
• ADDED: PL_cvt_i_[u]int32() for consistency.
• PORT: Avoid false alarm warning from gcc on 32-bit Windows.
• PORT: Windows: fixed compilation of the DDE interface after adding FUNCTOR_error1 to the core system.

[Sep 27 2022]

• FIXED: Instantiation error in cross-referencer.

[Sep 26 2022]

• FIXED: xref_source/1: avoid lazy definition of predicates in user by calling predicate_property(user:Goal, ...).
• FIXED: prolog_set_IO/3: stderr wrapper interpreted return code from low-level output wrong. This causes problems if output is connected to a socket as used by prolog_server/2.

[Sep 24 2022]

• ENHANCED: Make toplevel quit nicely if the I/O streams are in error state.
• ADDED: stream_property(S, error(Boolean)).

[Sep 25 2022]

• PORT: Msys2, fix LibDir for swipl in build env

[Sep 23 2022]

• ADDED: sweep package - integration with GNU Emacs
• FIXED: Windows: directory_files/2 and other directory access for long paths. Fixed by @mgondan1. Thanks!
• ENHANCED: portray_clause/1: add space after (?- goal).
• WASM: Avoid error on HTMLCollection on node

[Sep 22 2022]

• FIXED: Windows: long file support was broken again.
• FIXED: Handle reexport/1 and reexport/2 properly in multi-file .qlf files. Reported by @swi.
• DOC: syntax error handling in conditional compilation.

[Sep 21 2022]

• ENHANCED: ^ and ** arithmetic operator optimization for small integer use cases to avoid relying on GMP. This patch also uses integer exponentiation when compiled without GMP when possible and handles all special cases compatible with the GMP based version.

[Sep 22 2022]

• ENHANCED: Use __builtin_mul_overflow() when available to do fast overflow-safe multiplication.
• TEST: Silence syntax error on a rational number when compiled without rational support.
• MODIFIED: When inside code fragment under conditional compilation where the code is ignored, do not report syntax errors.

[Sep 21 2022]

• WASM: Added CHAT80 demo.
• FIXED: Prolog.Compound.toJSON()
• WASM: Avoid dependency on HTMLCollection to run on node.
• MODIFIED: WASM: Prolog.consult() now calls load_files/1, allowing it to handle a mixture of local files, URLs as well as Prolog sources and .qlf files. The sources are now processed sequentially and are no longer materialised as files.
• DOC: Improved WASM documentation.

[Sep 16 2022]

• ADD: License to CBG Chords example

[Sep 20 2022]

• ADDED: qcompile/2: option include(user). This option allows for compiling an application into a single Prolog .qlf file.
• ADDED: load_files/2: option if(Cond) is extended with exists to silently not load a file if it does not exist.
• FIXED: det/1 was not declared as a proper meta-predicate.

[Sep 19 2022]

• WASM: Allow translation of JavaScript ArrayBuffer into a Prolog byte-string. This allows extracting binary data from Response.blob() and is used by the WASM compilation hook to allow loading `.qlf` files from URLs.
• BUILD: Allow building with AddressSanitizer on Clang. Based on patches by Alessandro Bartolucci. Thanks!
• DOC: More WASM documentation.
• ENHANCED: notrace/1: avoid callback through C. This avoids possible C stack overflows and allows yielding from below notrace/1.
• MODIFIED: WASM: Renamed js_yield/2 to await/2 and js_can_yield/2 to is_async/2.
• FIXED: Possibly dangling tref->trie pointer when shared tabling creates the same variant table in two threads and disposes one of them. This hopefully addresses issue#1041. It surely fixes a bug though.

[Sep 18 2022]

• FIXED: Possible corruption of tries. By using PL_BLOB_UNIQUE we good reuse an atom after freeing the trie and creating a new one at the same address. As we save the symbol anyway, making use of unique atoms is meaningless here.

[Sep 17 2022]

• WASM: Make '$confirm'/2 hookable and implement it by means of the browser confirm() function.
• WASM: Make URL compilation work on slow connections and connections that do not provide a modification time through a HEAD request.
• FIXED: Exception preservation in undo/1

[Sep 15 2022]

• WASM: Allow compiling from a URL.
• WASM: js_yield/2: if the result is a single JavaScript string, return it as a Prolog string for reducing garbage.

[Sep 16 2022]

• FIXED: source_file/2 in mode (-,+) never reported any files. Breaks coverage analysis tool.
• FIXED: on_signal/3 for SIGINT called the handler asynchronously. This should only happen if SIGINT is bound to the debug handler. Reported by Raivo Laanemets.

[Sep 15 2022]

• WASM: Added is_object/1,2 to test Prolog terms for being a JavaScript object reference (of some class).
• WASM: Added pseudo function instanceof() to expression evaluation.
• WASM: Ported Paul Brown's Tau-Prolog example.
• ADDED: library(dom), providing Tau-Prolog compatible DOM interaction. Partial implementation.
• WASM: Added Prolog.load_string() and Prolog.load_scripts()
• WASM: Typos in docs and mixup of arguments in rational numbers.

[Sep 14 2022]

• WASM: Re-implement sleep/1 using an abortable Promise.
• WASM: Introduce the notion of abortable promises.
• WASM: Wrap js_yield/2 to forward exceptions.
• DOC: Started adding WASM documentation to main manual
• WASM: Added js_can_yield/0.
• WASM: Use a WeakMap rather than additional attributes to get the reverse object --> id mapping
• WASM: Return all objects except for instances of "Object" by reference rather than as a dict.
• WASM: Print blobs that embed JavaScript objecs as <js_Class>(Ref) rather than <js_object>(Ref).
• ADDED: js_yield/2 may be passed a promise, causing Prolog to wakeup when the promise is resolved.

[Sep 13 2022]

• ENHANCED: PL_unify_bool() accepts same atom values as PL_unify_bool_ex() and PL_get_bool()

[Sep 12 2022]

• ENHANCED: js_yield: get return value as term.
• ENHANCED: js_yield: allow passing a term rather than a string.
• INSTALL: Windows: Copied deleting the Uninstall registry key to the 64 bit section.

[Sep 11 2022]

• WASM: Much restructuring to prolog.js. Add Prolog.forEach() and Prolog.abort() to remain responsive when running slow queries.

[Sep 12 2022]

• FIXED: Backtracking after a foreign yield.

[Sep 10 2022]

• DOC: remove outdated restriction regarding [] and {} as operators

[Sep 9 2022]

• ENHANCED: colourise_db/3: process asserted bodies
• FIXED: qualify_op/3: recognize [] as an operator. Use SSU rules.
• CLEANUP: Moved default output routines to the core and Prolog class. Simpified and documented the shell.html and test.html examples.
• WASM: Simplify starting the WASM version by moving more defaults into swipl-web.js.

[Sep 8 2022]

• FIXED: Windows: this registry key is not deleted by Uninstaller.exe Unistalling swipl at Windows 10 Add/Remove App window should now work
• DOC: Add missing failure return info for more more foreign functions.
• WASM: Use an unbound tag for dicts created from JavaScript objects. If the class is not "Object", bind the Prolog tag to the JavaScript class name.
• WASM: Introduce classes for Prolog objects we cannot represent naturally in JavaScript such as variables, compounds, etc.
• CLEANUP: Large rewrite of WASM prolog.js to use ES6 class syntax for the Prolog class.
• MODIFIED: WASM: representation of rational numbers.
• WASM: Use `-s BIGINT` to exchange Prolog integers up to 64 bits. Update Prolog.get_integer() to return values as JavaScript number when possible and JavaScript bigint otherwise. Updated Prolog.toProlog() to convert bigint to a Prolog large integer.
• TEST: Added test for Windows NUL files

[Sep 7 2022]

• FIXED: Issue#153: Windows: can no longer open reserved files such as nul. Reported by Paulo Moura.

[Sep 6 2022]

• DOC: Fix typos, clarify return codes and error conditions for many foreign language interface functions (PL_*()).

[Sep 7 2022]

• FIXED: If creating an atom fails due to invalid representation of the source text (e.g., invalid UTF-8 sequence) we now raise an exception.

[Sep 6 2022]

• WASM: Using node we by default have no control over the terminal. Need to find out whether it is possible to make that work.
• TEST: Lower test recursion on systems with limited C stack
• WASM: Disabled IEEE754 tests as float rounding does not appear to be suported and many WASM float functions are imprecise.
• WASM: Do not support open(pipe(Command), ...) as popen() is a dummy.
• FIXED: transaction/1 in single threaded version.
• ENHANCED: Simplify clause visibility rules with transactions.
• PORT: Windows: install a copy of libstdc++*.dll while building and add this to the installer if INSTALL_TESTS is active.

[Sep 5 2022]

• PORT: Be more conservative with C stacks on WASM. Fixes dealing with cyclic terms in assert/1 and friends.
• BUILD: make_library_index/1 to silently ignore errors from use_foreign_library/1. This works around a dependency issue for building the INDEX.pl files during build. This is not ideal as in theory we could do exports conditionally based on what is in the foreign object. At this moment this does not happen.
• MODIFIED: qsave_program/2 and compilation using -c to interpret the `--emulator=file flag (or emulator(Emulator) option) independently from the `--stand-alone option. This allows creating non-stand-alone executables that use a specific emulator path.

[Sep 4 2022]

• TEST: When using -DINSTALL_TESTS, install foreign plugins that only support testing.

[Sep 3 2022]

• DOC: Describe the design of the Windows file system interaction and its limitations.
• ENHANCED: Test Windows file identify using the device identifier to deal with links.

[Sep 2 2022]

• TEST: Added more file name tests.
• FIXED: Windows: turned '$mark_executable'/1 into a dummy as it does nothing meaningful anyway.
• FIXED: Windows opendir(), etc. emulation. Use more efficient file finding and avoid a possible inifinite loop.
• ENHANCED: expand_file_name/2: provide signal handling while expanding such that we can interrupt.

[Sep 1 2022]

• FIXED: Windows working directory to use SetCurrentDirectoryW() for supporting longer path names.
• FIXED: Sprintf() for wide character strings with surrogate pairs.
• FIXED: Sprintf() for NULL char * that have non-ASCII encoding.
• FIXED: Windows implementation of size_file/2 to use GetFileAttributesExW() because _wstati64() cannot handle long file names.
• ENHANCED: Windows: Use more robust translation to Windows path names. Support long file names using the "\\?\" or "\\?UNC\" prefix.
• FIXED: Windows dlopen() emulation path handling.

[Aug 31 2022]

• ENHANCED: fallback to the default mem functions in the GMP hooks... ...when invoked out of the context of Prolog.

  See https://swi-prolog.discourse.group/t/sweep-swi-prolog-embedded-in-emacs/5713 for relevant discussion.

• FIXED: Windows conversion to UTF-16 file names to introduce surrogate

pairs when needed.

• MODIFIED: expand_file_name/2 return entries in simple lexical order

rather than using mbscoll(). The latter did not work anyway because the pattern and file names use UTF-8 rather than native multibyte.

• FIXED: existence checking on Windows for expand_file_name/2
• FIXED: Windows: do not canonicalize characters of file names > 0xffff

using towlower() as this function truncates to 16 bits. Assumes there are no letters with case above 0xffff.

• FIXED: Windows: translation of wchar_t to UTF-8 for surrogate

pairs. Fixes e.g. ?- string_bytes('\U0001f600\U0001f604', L, utf8).

• FIXED: Windows: ensure surrogate pairs to the console streams are in

the same WriteConsoleW() call. This fixes writing Unicode code points > 0xffff to user_error. The patch also writes output to user_error in larger chunks. Note that the default Windows console does not handle surrogate pairs. The Windows Terminal does.

• DOC: Describe poor exceptions from failing file system operations.

[Aug 30 2022]

• FIXED: Actually use overruled PATH_MAX in uxnt.c emulation.
• DOC: rename_file/2: updated docs.
• ADDED: Prolog flag path_max to get access to the manimum file name length on the OS.

[Aug 29 2022]

• FIXED: string_bytes/2 in mode (+,-) for UTF-16 encoding on Windows. Reported by Matthias Gondan.

[Aug 25 2022]

• PORT: Emscripten updates: Move required settings to Emscripten.cmake and add support for GMP

[Aug 23 2022]

• DOC: Make compile if library(shlib) is not present

[Aug 22 2022]

• FIXED: Issue#1025: stream encoding wchar_t not returned as stream property

[Aug 21 2022]

• FIXED: Issue#1021: engine_next/2 for a next answer when the previous return was due to a yield crashes.
• FIXED: WASM Issue#1023: sleep/1 no longer worked.

[Aug 20 2022]

• BUILD: Dependency issue for building the library indexes. After comments and a hint by Matthias Gondan.
• TEST: Avoid more tests that depend on threads in single threaded version.
• WASM: library(readutil): use shared use_foreign_library/1.

[Aug 19 2022]

• WASM: Include http into wasm version
• WASM: Activate STATIC_EXTENSIONS and include (part of) the clib package.
• BUILD: Build option cmake -DSTATIC_EXTENSIONS which adds selected extensions (packages) to libswipl. In this scenario dynamic linking is disabled and use_foreign_library/1 is adjusted to call the already existing install function of the extension.

[Aug 18 2022]

• WASM: Added calling JavaScript from Prolog, exchange DOM elements and adding scripts from Prolog.

[Aug 17 2022]

• WASM: Renamed js_call/1 to js_run_script/1 for consistency
• WASM: Avoid the need for a frame in Prolog.query(String).
• WASM: Provide Prolog.message_to_string()
• WASM: Allow a frame to discard all data

[Aug 11 2022]

• WASM: Many changes to calling Prolog from JavaScript. These patches work to more high level interaction with Prolog from JavaScript. This work should be considered experimental.

[Aug 9 2022]

• WASM: Perform UTF-8 decoding on output such that we can write Unicode.
• WASM: Handle sleep/1 using JavaScript setTimeout()

[Aug 8 2022]

• WASM: Allow _ in file names.
• WASM: Reduce auto-yield frequency and avoid the event loop when < 20ms.
• WASM: Focus on input next/stop when requested.
• WASM: Set default package list to plunit, chr and clpqr
• WASM: Extended shell.html demo. Working asynchronous behavior, command line history and persistent files in localStorage and manage files.
• WASM: Many extensions to calling Prolog from JavaScript. Added support for (auto) yielding to achieve asynchronous behaviour in the browser.

[Aug 6 2022]

• ADDED: heartbeat mechanism: by setting the Prolog flag heartbeat, the multifile predicate heartbeat/0 is called every N inferences.

[Aug 8 2022]

• FIXED: PL_yield_address() (foreign yielding) effectively popped one level of the foreign frame stack.

[Aug 3 2022]

• WASM: Updated instructions in CMAKE.md. "Native friend" is no longer needed.
• WASM: Pass -s ALLOW_MEMORY_GROWTH=1 to allow for bigger stacks.
• WASM: libswipl should not be a dynamic library on emscripten
• WASM: Attempt to support threads. Compiles, but doesn't work on either Firefox or node.
• WASM: Addes js_call/1 to call JavaScript
• WIP: trying to deal with reading.
• WASM: added ttymode() to Prolog JavaScript API.
• WASM: Minimal running example.

[Aug 2 2022]

• CLEANUP: Type safety of property enumerators
• CLEANUP: get rid of function pointers without declared arguments.
• WASM: Make init argv default
• WASM: Put file system as /swipl and make this the Prolog home.
• WASM: Avoid absolute path messages when linking swipl-web

[Jul 31 2022]

• FIXED: autoloading: read the module header using operators from the system module to avoid user operator declarations to cause a failure reading this.

[Jul 28 2022]

• ENHANCED: Performance tuneup - reduce number of arithmetic operations for pivot - replace one call to lists:member/2 with memberchk/2
• ENHANCED: Optimize nth1/3 using '$seek_list'/4
• DOC: Add => to the operator table.
• ADDED: PL_get_stream_from_blob()
• PORT: config/win32.h and config/win64.h have been removed.

[Jul 27 2022]

• DOC: Various updates to blob API (notably flags).

[Jul 28 2022]

• FIXED: Issue#1015: Small memory leak

[Jul 27 2022]

• CLEANUP: Windows: move config parameters to common CMake infrastructure instead of using the dedicated hard-coded values.
• BUILD: Determine architecture from CMAKE_SYSTEM_PROCESSOR and CMAKE_SYSTEM_NAME rather than their HOST counterparts.
• DOC: setarg/3: point at arg/3.
• FIXED: setarg/3 to unify always when the first argument is a variable. Abramo Bagnara.
• TEST: Do not run cyrillic file tests if the text encoding cannot represent them.
• TEST: Set UTF-8 encoding.
• DOC: setarg/3 if the designated argument is a variable.

[Jul 20 2022]

• ENHANCED: C version of nth0 to be more consistent with the Prolog implememtation and allow for interupts.

[Jul 19 2022]

• ENHANCED: performance for nth0/3 in mode (+,+,?)
• PORT: Issue#1009: Avoid conflict between Qt and swipl-win target.

[Jul 16 2022]

• PORT: Suppress uninit warning in msys2 I think this can safely be initialized to FALSE [Jul 14 2022]
• FIXED: user_or_explicit autoload mode not working

[Jul 11 2022]

• FIXED: make_library_index/1 to use the xref flag while reading the file header. Avoids unwanted term expansion.

[Jul 10 2022]

• PORT: WASM version: statistics/2 cputime now actually returns walltime since the start of Prolog. This allows for basic performance evaluation on CPU based tasks. WASM does not provide primitives to access the actual CPU time usage.
• PORT: Make compile again in WASM. Reported by Jos de Roo

[Jul 9 2022]

• FIXED: string_bytes/3 to ascii: avoid crash and raise an exception if the text cannot be represented using ASCII.
• FIXED: string_codes(+,-,octet) (crashed on assertion error)
• FIXED: write/1 for strings using UTF-16 encoding (Windows).

[Jul 8 2022]

• ENHANCED: base64_encoded/3: added option encoding(Encoding) and bootstrap base64/2 and base64url/2 from this predicate. base64url/2 now used UTF-8 encoding (MODIFIED).
• ADDED: string_bytes/3, get the bytes for representing a (Unicode) string in a given encoding.

[Jul 7 2022]

• FIXED: Avoid C-stack overflow in recursive C->Prolog->C calls by demanding a minimum of 100Kbytes stack before calling Prolog.

[Jul 2 2022]

• FIXED: pack_install/1: if the pack is already installed at an older version, upgrade it.
• ENHANCED: Make git probe silent on all possible errors.
• FIXED: GIT URLs must be a valid absolute URL to begin with
• FIXED: pack_install/1: version comparison for already installed versions.

[Jul 1 2022]

• ADDED: PL_scan_options() public API to deal with option lists.
• ADDED: pack_install/1 to test whether a URL is a GIT URL using git_remote_branches/2.

[Jun 30 2022]

• MDOIFIED: Fixed various internal recoding issues to ENC_WCHAR. These changes also ensures canonical text as used for atoms and strings only contain valid Unicode code points. As a result, passing invalid strings to Prolog using the foreign API may result in a failure.
• DOC: Unicode and UTF-16 issues.
• MODIFIED: Be consistent about valid character codes. These are the Unicode code points 0..U+10FFFF, while the range reserved for UTF-16 surrogate pairs is excluded (U+D800..U+DFFF).
• DOC: Base64 encoding issues.

[Jun 29 2022]

• PORT: add_package_path/1 also under Windows This change allows for a GNU-style directory structure also under Windows. [Jun 30 2022]
• DOC: Rename section label for the statistics section of the manual to avoid a clash with the library documentation, hiding statistics/2 docs.

[Jun 29 2022]

• TEST: Avoid surrogates for all encodings
• UTF: Fixed length handling in setenv/2.

[Jun 28 2022]

• PORT: Replace most wint_t by int for character classification purposes because Windows wint_t is 2 bytes, so we cannot classify anything > 0xffff
• UTF: atom_concat/3 can now handle UTF-16 sequences.
• UTF: Make PL_cmp_text() and PL_unify_text_range() deal with UTF-16 strings.
• CLEANUP: sub_atom/5: more consistent typing and better reuse of primitives. This patch fixes handling atoms longer than 2G code points

[Jun 27 2022]

• FIXED: Reading terms from Unicode symbol sequences.
• ADDED: Use UTF-16 for canonical text on Windows. This is a first step that implements some of the basic handling for creating and writing atoms with code points > U+FFFF

[Jun 26 2022]

• MODIFIED: Official encoding names for UTF-16. Now also allows aliases for the IANA names for specifying the encoding (UTF-8, UTF-16BE, UTF-16LE).
• ENHANCED: Allow reading and writing UTF-16 files.

[Jun 28 2022]

• PORT: MSYS2, add %MINGW_PREFIX%/bin to dll search

[Jun 26 2022]

• MODIFIED: PL_get_char() now returns a domain or representation error if the code is outside the Unicode range (domain) or cannot be represented by the system (representation).
• FIXED: built-in option list processing should raise a type error if the list is cyclic.

[Jun 24 2022]

• FIXED: incr_invalidate_calls/1: succeed if no tabling happened in the calling thread yet (and thus there is no variant table).

[Jun 23 2022]

• ADDED: Allow floats from other scripts.
• DOC: various Unicode related updates, including handling of non-ASCII decimal number characters.

[Jun 22 2022]

• MODIFIED: Make the Prolog parser parse decimal numbers in other scripts to integers.
• ADDED: char_type/2 type decimal.
• MODIFIED: Updated character classification for read/1 and friends to be based on Unicode 14.0.0
• MODIFIED: Updated to Unicode 14.0.0 (from 6.0.0)
• CLEANUP: library(unicode/unicode_data) to avoid conflict with table/1.

[Jun 20 2022]

• MODIFIED: win_add_dll_directory/1: throw exceptions on failure rather than assuming failure of `AddDllDirectory()` indicates we need to extend ``%PATH%%`.
• ENHANCED: win_add_dll_directory/2: throw normal Prolog exceptions for the two common reasons for this predicate to fail: non-existence of the target or the target not being absolute.
• ENHANCED: building the autoload index now extracts the public predicates in a more generic way, processing optional #! line, :- encoding directives and (conditional) exports in the header. This notably allows for module hedaers like below. ` :- module(m, [p/1]). :- if(current_prolog_flag(windows,true)). :- export(win_q/2). :- endif. `

[Jun 15 2022]

• ENHANCED: PL_record_external() deal with records > 2Gb on 64 bit platforms.
• FIXED: Issue#114: Windows getenv/2 may return additional garbage (typically an extra \u0000 character at the end of variables of 1023 bytes or longer because the 0-byte is not added. Paul Singleton.

[Jun 12 2022]

• FIXED: write_term/2 and friends handling of embrace of operants that are operators for partial writes.
• FIXED: no space is required between a space and (.

[Jun 11 2022]

• FIXED: write_term/2 and friends: do not embrace writing a single atom if this is an operator and the priority(Priority) option is given.
• FIXED: Do not close the standard streams as part of atom-GC.

[Jun 9 2022]

• DOC: Create links for S*() function references

[Jun 8 2022]

• DOC: Started documenting SWI-Stream.h
• FIXED: Sgets() handling of non-0-terminated output from Sfgets().

[Jun 2 2022]

• DOC: ord_intersection/2 is semidet.
• DIST: Fixed rmd160 generation for scripts/update-macports

[Jun 1 2022]

• FIXED: write_term/2 with numbervars and variable_names (#866)

[Jun 2 2022]

• ENHANCED: do not map I/O errors to exceptions when the error occurs as a result of a close that is initiated from the atom garbage collector.

[Jun 1 2022]

• FIXED: Issue#993: possible deadlock when loading a module. Reported by Sean Leather.

[May 23 2022]

• FIXED: eliminated a spurious choice-point in sub_atom/5 Reported in https://swi-prolog.discourse.group/t/careful-with-sub-atom-5-and-feature-request-last-sub-atom-5/5422
• FIXED: Sfprintf(): handling of ENC_WCHAR() encoding.
• ENHANCED: Sfprintf(): allow Unicode characters for %c
• FIXED: PL_cleanup(): small memory leak for command line options. Peter Ludemann.

[May 18 2022]

• FIXED: correct arity of dynamic declaration for breakpoint_condition/4

[May 17 2022]

• DOC: enhance documentation for det/, $/1 and $/0, describing the exceptions and how trap/1 can be used to make the debugger act quickly.

[May 15 2022]

• ADDED: set_breakpoint_condition/2, providing conditional breakpoints
• MODIFIED: Extend break_hook/6 to break_hook/7 ... ..adding an extra boolean argument +Debug denoting whether the system was in debug mode when the breakpoint was triggered.
• FIXED: explain/1: hide references from called/5
• FIXED: Have breakpoints cleared in the UI when the clause that holds them is removed during a reload of the file.

[May 14 2022]

• FIXED: breakpoint_property/2: fixed character_range property
• ENHANCED: Issue#17: reverse/2 to be deterministic if second argument is a proper list. Ulrich Neumerkel.

[May 13 2022]

• TEST: Added STO restriction as this test involves rational trees.

[May 12 2022]

• FIXED: Issue#122: dif/2: or-node simplification.
• FIXED: Possible deadlock enumerating predicates from a source file.

[May 10 2022]

• TEST: Updated ^/2 tests. Move float**rat tests to test_ieee754 for rounding mode handling.
• ENHANCED: use ldexp() rather than pow() for multiplying a float with an integral power of 2. mpz_fdiv(): replace calls to pow() function by ldexp()
• FIXED: rounding of pow() (^/2 and **/2) ar_pow(): Re-implement float**mpq case
• FIXED: Avoid Unicode quote in library(aggregate) comment

[May 9 2022]

• ADDED: Prolog flag acg_close_streams.
• ADDED: Sgcclose() as an extended version of Sclose() that can be used to avoid deadlocks when closing streams from the atom garbage collector.
• MODIFIED: PL_blob_data() to return NULL if the blob has been released and document the consequences thereof.

[Apr 24 2022]

• PORT: Replace MINGW_ROOT by WIN32 I think -municode needs to be defined on all Windows systems that are currently supported (= several flavors of MinGW). MINGW_ROOT was not defined on my system, so I would like to change this to WIN32 to save a cmake command line switch.

[May 6 2022]

• FIXED: LaTeX conflict preventing building the PDF docs
• PORT: Issue#83: "label can only be part of a statement" compiler error.

[May 5 2022]

• ADDED: Prolog flag vmi_builtin that controls whether or not built-in predicates that are defined in the VM are handled in the VM or called as normal predicates. The latter was previously associated with debug mode, but has also other purposes, such as in coverage analysis or when using trace/1.

[May 4 2022]

• ADDED: Low level primitives to collect information about coverage. This is used by show_coverage/1,2 to achieve only a modest slowdown.

[May 3 2022]

• MODIFIED: delete_file/1 to delete a read-only file on Windows for compatibility with other platforms.
• MODIFIED: Windows: use GetACP() to detect that the system runs in UTF-8 mode and set the default encoding accordingly.

[Apr 23 2022]

• FIXED: Several issues to consistently deal with buffer sizes in os/windows/uxnt.c.

[Apr 27 2022]

• MODIFIED: Floating point rounding now assumes the C correctly implements floating points functions for the "to nearest" rounding. It than adds or subtracts one ulp to guarantee that the true value is between the downward and upward rounded values.

[Apr 21 2022]

• FIXED: Possible race condition importing into a module. Can lead to termination on a system error.
• PORT: Consistently use PATH_MAX and raise it to 32k on Windows.

[Apr 20 2022]

• CLEANUP: Use POSIX PATH_MAX rather than MAXPATHLEN
• FIXED: Source layout handling for SSU (=>) whose guard is a conjunction.
• FIXED: Source layout handling for unifications against nested head variables.

[Apr 19 2022]

• FIXED: Make source layout handling aware that debug/3 and assertion/1 may be removed by the optimizer.

[Apr 17 2022]

• DOC: Many enhancements to the foreign language API docs, notably wrt. atoms and blobs.
• ADDED: Sopen_iri_or_file() API to allow foreign code to access the resources.

[Apr 16 2022]

• ADDED: Support repositioning streams on program resources by setting the buffer size to the size of the resource. This allows the IDE tools to run on resource files.

[Apr 15 2022]

• FIXED: central resource db handling by opening ``res://` may have streams closed early during to atom-GC.
• ENHANCED: require/1 to simply import if the target module is already loaded. Reduces startup time.

[Apr 14 2022]

• ENHANCED: open_resource/2,3: allow opening multiple resources concurrently.
• FIXED: open/3 and friends on 'res://' paths.

[Apr 13 2022]

• FIXED: fd_degree/2 and fd_set/2 for constant integer arguments.

[Apr 12 2022]

• DOC: added cross-references from absolute_file_name/3 to file_search_path/2.

[Apr 8 2022]

• ADDED: library(sandbox): allow declaring prolog flags as safe.

[Apr 7 2022]

• TEST: updated check_installation for PCRE2
• PORT: skip dll in Rtools (only static libs)
• ADDED: open/4 option newline(Mode).

[Apr 6 2022]

• FIXED: read_term/2: memory leak when reading Unicode variable names and reporting these using the variable_names(Names) option.

[Apr 5 2022]

• DOC: Updated clause/2.
• FIXED: Memory leak reading Unicode queries at the toplevel. Peter Ludemann.
• ADDED: library(sandbox): support predicate_property/2
• DOC: PL_atom_wchars(): wrong types

[Apr 4 2022]

• ADDED: library(sandbox): functor/4.

[Apr 3 2022]

• FIXED: Windows (swipl-win.exe) clean closing of I/O.
• FIXED: Possible wrong Windows drive letter normalisation.

[Apr 2 2022]

• PORT: msys2, detect libdb-6.0.dll from libdb.a

[Apr 1 2022]

• PORT: Msys2/clang64
• PORT: MSYS2/clang64 the dll name appears several times in the ".a" file, select the first appearance
• FIXED: PL_retry() and PL_context() to work with all integers.
• FIXED: swipl-ld didn't pass -I for SWI-Prolog.h any more.

[Mar 31 2022]

• PORT: float_fractional_part/1 function: work around broken modf() in MinGW

[Mar 30 2022]

• FIXED: on_signal/3: properly set flags on the signal structure such that when bound to a predicate the predicate is called synchronously. Breaks handling SIGTERM in library(http/http_unix_daemon).
• PORT: Sopenmem() to use SIO_NL_POSIX. All internal strings use POSIX \n to delimit lines. @mgodan1.

[Mar 29 2022]

• FIXED: copy_term/4 to handle cyclic terms for the first argument. Also proper recovery in case of a memory overflow.

[Mar 28 2022]

• DOC: Enhance docs for trap/1.
• DOC: Start disclaimer on float precision.

[Mar 27 2022]

• FIXED: Added new test files,
• PORT: Work around broken llround in MinGW
• TEST: Added test framework and some initial tests for source code position and breakpoint management testing.
• DOC: open/3,4 pipe(Command) limitations.
• TEST: Moved pipe tests to a plunit file.
• PORT: open/3,4 on Windows: use clib popen() instead of the broken emulation in src/os/windows/popen.c

[Mar 26 2022]

• FIXED: Clause position management for h => X = ..., rest_body: the unification is not inlined.

[Mar 25 2022]

• SNAP: Updated snap package dependency for pcre2

[Mar 24 2022]

• FIXED: swipl-ld: access to uninitialized memory
• FIXED: round/1 near +/- max integer.
• DOC: complete library index, move gensym and www_browser library docs from LaTeX to PlDoc
• FIXED: round/1 function. As discussed on Discourse. Rick Workman.

[Mar 23 2022]

• FIXED: Empty thread queues before deleting them.
• FIXED: Reclaim stored exception when deallocating a stream.
• FIXED: Avoid crash updating the stream admin from blob release handlers during shutdown.
• MODIFIED: Added flags and more return values to PL_cleanup().
• FIXED: abolish/1 on an imported predicate should decrement the reference count for the imported predicate.

[Mar 22 2022]

• DEBUG: Tricks for ASAN to find the predicates that have not been deleted.
• FIXED: current_predicate/1 bug in updating module reference count that may cause temporary modules not to be destroyed. Notably affects SWISH.
• DEBUG: Allow for the environment `ASAN_OPTIONSdetect_leaks1` when build with ASAN to debug memory leaks and avoid unloading foreign libraries using dlclose().

[Mar 21 2022]

• DOC: Add transpose/2 to the clpfd docs.
• FIXED: Allow using delimited continuations after cleanup/initialise sequence.
• FIXED: Cleanup cache for tabling ret/N functors

[Mar 20 2022]

• FIXED: Using date and time functions after PL_cleanup().
• CLEANUP: Silence several warnings on systems that remove assert() calls.
• FIXED: bulk mode for transactions was not actually passed.
• PORT: fixed support for systems that lack file mapping
• FIXED: Single threaded build.
• FIXED: Issue#961: crash in halt after using the graphical debugger,

[Mar 18 2022]

• TEST: Do not load xpce into the basic test suite.
• DOC: PL_cleanup() docs updated for improved functionality.
• TEST: Avoid relying on the cat program.
• FIXED: Memory leak reconsulting a file for deleted predicates.
• FIXED: retract in nested transaction of a clause asserted in the outer transaction to properly reclaim the clause.
• TEST: Avoid deprecated thread_exit/1.

[Mar 17 2022]

• FIXED: Cleaning up locale reference counting and deletion. Could leak memory.

[Mar 16 2022]

• TEST: Close the temporary toplevel streams
• MODIFIED: set_prolog_IO/3 no longer creates a clone stream if stdout and stderr are the same stream, but creates an error stream that writes to the output (and flushes it). This way we can safely close user_error.
• FIXED: fast_term_serialized/2: memory leak.
• FIXED: Avoid transaction rollback to be recorded (memory leak).
• FIXED: Ensure deleting table enum object (leaks).
• FIXED: Avoid leaking a trie node on concurrent insert of the same value.
• ENHANCED: if we created a supervisor that is equal to the existing, discard the new one. This may happen if multiple threads create a supervisor. Leaks memory as we cannot safely discard a running supervisor.
• FIXED: memory leak recliming the IDG for monotonic tabling.

[Mar 15 2022]

• FIXED: memory leak on prolog_unlisten/2.

[Mar 14 2022]

• FIXED: consistent use of tree pool allocation.
• TEST: Disable some tests under ASAN as they run out of stack.
• FIXED: Reclaim indexes array on reclaiming predicates.

[Mar 13 2022]

• FIXED: Initial atom table was allocated twice. Also set the initial size for this table to be big enough to load the initial state, avoiding two rehash operations.
• FIXED: memory leak when destroying a module holding thread-local predicates.
• CLEANUP: Use one function for deallocating predicate definitions
• FIXED: Reclaim argument admin for destroyed predicates.

[Mar 12 2022]

• CLEANUP: Reclaim "dirty table" and "dewam_table".
• CLEANUP: Moved globally cached dict functors to GD.
• CLEANUP: Reserve global vars for predicates used from C to allow re-initialization
• FIXED: PL_cleanup(): reset blob admin.

[Mar 15 2022]

• FIXED: Typo on threadutil.pl, harming operation without xpce. Johan Romme.

[Mar 10 2022]

• ADDED: Make encoding accessible by name using PL_atom_to_encoding() and PL_encoding_to_atom()
• DOC: tabling po(Compare) argument.

[Mar 9 2022]

• FIXED: predicate_property/2 on visible for zero-argument goals could raise an exception.

[Mar 8 2022]

• DOC: refer to pack debug_adapter in the GNU Emacs Interface page
• FIXED: dif/2 not firing after unifying with other attributed variables.
• CLEANUP: replace start/endCritical by proper functions to simplify debugging.

[Mar 7 2022]

• FIXED: call_residue_vars/2: possible spurious reported variables because the trail entry was removed but the variable was not reclaimed due to a frozen stack.

[Feb 28 2022]

• ENHANCDD: better support for platforms without signals. This adds an alternate alerting path when running on a non-Windows system without sig_alert, using a C11 mutex and condition variable. Obviously this loses the "interrupt blocking system call" semantics, but it allows thread_sigwait to park itself while waiting for another thread's signal.

  A few tests needed changing:

  1. When running without signals on non-Windows, popen(cat-2) will set SIGPIPE to ignored manually, since there's no other way to avoid that signal.
  2. The signal_nested tests needed an extra call port so they could proactively check for virtual signals.
  3. The D_BREAK tests simply don't work. It's slightly too big of a can of worms for me to look into for this commit, so I simply disabled that test suite on signal-free systems.

     A couple package tests needed adjustments as well:

  4. clib:test_af_unix was using an interrupting signal to stop the server thread, so I've changed it to auto-exit on signal-free systems.
  5. ssl:ssl_certificates was closing the client before reading the server's response, which caused a SIGPIPE on the server, so I added a read-and-check to the test to drain the buffer.

     For testing purposes, the no-signals build can be approximated on a system built with signal support by passing the --no-signals and --sigalert=0 arguments to swipl on the command line.

• ADDED: on_signal/3 now takes value 'ignore' This allows for requesting the SIG_IGN disposition, and also unifies the SIGPIPE behavior with the other initially-prepared signals. Technically, this could be considered a backwards-incompatible change. However, for this to actually affect someone's working code, they would have to
  1. Redefine the system predicate ignore/1,
  2. Call on_signal(Sig, _, ignore), AND
  3. Expect ignore(Signal) to do something besides ignoring Signal; and in that case I think we can all agree they've brought this trouble upon themselves. :)

     Also adds SIGPIPE's default disposition to the docs.

[Feb 25 2022]

• MODIFIED: fixing SIG_PROLOG_OFFSET at 32, per docs This also introduces a set of macros to interact with the pending signal mask which should hopefully ease refactoring if and when we change which signals swipl supports, like adding support for system signals over 31.

[Feb 24 2022]

• MODIFIED: Do not allow for an comma to appear as an unquoted atom.
• MODIFIED: switching core libswipl code to C11 This allows for a standards-compatible implementation of the LD macros that is guaranteed to compile down to a simple reference even at -O0. I've also added some code that, at least in my testing, makes `print LD` work again in GDB and any debugger that uses it as a backend.

[Feb 19 2022]

• PORT: adding O_SIGNALS define in config.h This provides a single define to check if Prolog's signal-handling is enabled, rather than checking each of HAVE_SIGNAL etc. This also makes the existence and use of GD->signals.sig_alert consistent on whether SIG_ALERT is defined.

[Feb 18 2022]

• PORT: Do not depend on SIGINT if signal support is disabled.

[Feb 16 2022]

• PORT: Get optional symbols via weak linking This unifies the tcmalloc and ptmalloc linking code and also allows systems without dlsym(), like WASM, to expose the malloc-implementation predicates, so long as the linker is capable of resolving weak symbols.

[Feb 17 2022]

• PORT: Issue#939: TLD_alloc() undefined error on Win32. @mgodan.
• FIXED: Gui tracer for inlined unification with SSU clauses, e.g. p(X), X = aap(N) => writeln(N).
• FIXED: Allow tracing test predicates that are inlined into the VM.
• FIXED: Make gui tracer handle inlined head unifications.
• FIXED: rule/3 for => rules that have the unification moved into the head and listing/1 for such SSU clauses.

[Feb 15 2022]

• FIXED: Preproc/build errors Adding a couple GCC builtins to the config tests, using them to force short-circuiting of _LD_WITH_FALLBACK even in low-optimization modes (e.g. Clang in DEBUG configuration).

  Also adding a few missing-but-used defines to config.h.cmake (HAVE_BUILTIN_EXPECT, HAVE_THREAD, HAVE_VOLATILE, and HAVE_INLINE) and fixing an unbalanced #ifdef pair that got added in f3b79d6.

• FIXED: Consider $/0 a breakable instruction. This fixes the debugger

for clauses holding $/0.

• FIXED: Avoid instantiation error on =../2 when analysing clause

positions with incomplete information.

[Feb 14 2022]

• SANDBOX: SWISH issue#147: Allow for copy_term/4.
• FIXED: Allow retry from the body of => rules.
• ENHANCED: Avoid tracing inside spy/1, nospy/1 and related debug control predicates.
• FIXED: Issue#935: package manager: download location of git archives
• DOC: Remove obsolete reference of break/1 trace port

[Feb 9 2022]

• FIXED: Tracer retry on a parent frame. Notably causes problems if retrying runs cleanup handlers.

[Feb 4 2022]

• MODIFIED: MacOS SWI-Prolog.app working directory and locale setup.

[Feb 3 2022]

• MODIFIED: MacOS swipl-win to start in ~/Documents.
• MODIFIED: MacOS: set LC_CTYPE to UTF-8 if neither LANG nor LC_CTYPE is set. Also set the encoding flag to utf8 if LC_CTYPE is set to UTF-8.
• PORT: Started Apple specific predicates. Adds apple_current_locale_identifier/1.
• PORT: Fix compilation using clang in debug mode.

[Feb 2 2022]

• FIXED: make/0 to consider a file modified if some indirectly included file is modified. Used to only consider directly included files.

[Jan 31 2022]

• FIXED: Possible GC crash on a rational number appearing in a clause head.

[Jan 30 2022]

• FIXED: Indexing issue for assessing possible clauses indexes in SSU code. Can lead false "No matching clauses" errors.

[Jan 28 2022]

• DOC: read_string/3: clarify characters.

[Jan 27 2022]

• ENHANCED: option/2: verify the Options argument.
• CHECK: Verify that the format/2,3 arguments are a list. Quintus allowed for not using a list when only a single argument was required. Paulo Moura.

[Jan 26 2022]

• MODIFIED: Read +digits as a term rather than a number. This changes also removes the space when writing e.g. +42. Reading +digits as a number predates the ISO standard and current practice. It was in SWI-Prolog since version 2.5 ...
• MODIFIED: format/1-3: enforce first argument to be text. Now raises an exception if the first argument is a number, etc.
• MOFIFIED: format/2: ~@, running a goal now discards possible bindings created by the goal. Compatibility with SICStus.
• COMPAT: format/2: a numeric argument to ~s, e.g., ~3s truncates the string to the given number of characters.
• COMPAT: format/2: ~r uses default radix of 8, compatible with SICStus and GNU-Prolog (used to raise an exception). Paulo Moura.
• FIXED: set_prolog_flag(threads, Val) deadlocked. Paulo Moura.
• FIXED: big integers constants in arithmetic expressions under optimization could be compiled as A_MPQ (rational), resulting in a crash. Paulo Moura.

[Jan 25 2022]

• DOC: further enhancement to untable/1 docs.
• DOC: document the role of untable/1.

[Jan 24 2022]

• ADDED: foldsubterms/5 and use this to bootstrap foldsubterms/4, mapsubterms/3 and mapsubterms_var/3.
• ENHANCED: print_term/1,2: actually handle the left_margin option (fix) and make its default the current column.
• FIXED: print_term/1,2: avoid dependency on library(backcomp).

[Jan 22 2022]

• FIXED: call_residue_vars/2: if GC performs early reset on an attvar it is incorrectly considered residual.
• DOC: Fixed PL_get_dict_key() docs. Matthijs van Otterdijk.

[Jan 21 2022]

• ENHANCED: Use mallinfo2 when available. By @mgodan1.

[Jan 19 2022]

• CLEANUP: Remove code from DCG translation that moves unifications immediately following the neck of the clause into the head. Since this optimization is done by the compiler anyway this is no longer needed. This allows for creating SSU DCG rules on top of the existing compilation.

[Jan 18 2022]

• ADDED: valid_term_position/2 to help debug term_expansion/4

[Jan 17 2022]

• DOC: Fixed error in CMake build script for the manual.
• DOC: Fixed LaTeX errors.
• FIXED: Another postfix operator issue as a regression to recent fixes on postfix operator handling. Affects the R interface (reported by Nicos Angelopoulos for real, but probably rserve_client is also victim).

[Jan 16 2022]

• DOC: clarify module issues wrt. macro expansion and explain what is affected by import modules.
• DOC: read_term/2: quasi quotation layout
• TEST: read_term/2 subterm_position option. Contributed by Peter Ludemann.

[Jan 14 2022]

• PORT: Added missing include for <errno.h>
• FIXED: Possible crash in copy_term/4 and copy_term_nat/4.
• ADDED: mapsubterms_var/3 as an alternative to mapsubterms/3 that also maps variables.

[Jan 12 2022]

• ENHANCED: If a package is available both globally and locally (per user), ignore the global one silently rather than with a warning.
• ADDED: pack_install/2: option global(Boolean) to explicitly install a package for the user or globally.
• BUILD: Include debug info with PGO build.
• CMAKE: let Threads use -pthread instead of -lpthread This can link other needed libraries, and fix building on riscv64.

[Jan 11 2022]

• FIXED: Avoid warnings about uncaught exceptions from write_length/3 in print_term/2.

[Jan 10 2022]

• ENHANCED: Edits commit 18690d80fbdc842a5bad3da1fb81a083e55b1b24. Forgotten amend and already pushed to origin.
• FIXED: qsave_program/2: add missing load_module for shlib The predicate current_foreign_library is used which is from the module shlib. Unfortunately it is not imported though, which makes it impossible to use qsave without autoloading enabled.

  [edited by JW: use autoload/2 and also deal with autoload_all/1 dependency]

[Jan 9 2022]

• TEST: Started a few operator tests
• FIXED: handling postfix operators must reduce the left side before reducing the postfix operator.

[Jan 8 2022]

• ENHANCED: Issue#24: clause_info/4: reject if term layout returned by expand_term/4 is bogus. This forces the guitracer to revert to decompiling.
• FIXED: arg xf xf (cascading postfix operators) where the priority of the first is higher than the second must generate a syntax error rather than an incorrect term.

[Jan 7 2022]

• DEBUG: Fixed duplicate debug id
• FIXED: print_term/2 handling of postfix operators.

[Jan 6 2022]

• SECURITY: running plain swipl loads init.pl from the current directory if this file exists. It is not advised to load customisation files from the current directory. We now only load init.pl when explicitly called using swipl -f init.pl while an implicit init file is only loaded from the user_app_config path alias.

[Jan 5 2022]

• ENHANCED: library(apply_macros) now expands maplist calls with lists known at compile time into a sequence of calls if this is safe and the lists are at most 10 elements long.
• ADDED: copy_term/4 and copy_term_nat/4. These predicates provide a partial renaming of variables and is used in s(CASP). This patch also improves out-of-memory handling and adds a test suit for copy_term.

[Jan 4 2022]

• DOC: foreach/2 by @swi

[Jan 3 2022]

• FIXED: pack_rebuild/1 if the pack is installed but does not provide binaries for the current architecture. Nicos Angelopoulos.
• FIXED: SWISH Issue#146: failure to render stacktrace due to failure of message_to_string/2 on ansi(Style, Fmt, Arg) if Arg is not a list.

[Jan 2 2022]

• ADDED: PL_can_yield() to figure out whether the current execution context allows for yielding control.

[Jan 1 2022]

• DOC: foreign yield interface

[Dec 31 2021]

• ADDED: Allow yield/resume from foreign predicates.
• MODIFIED: Query identifiers now keep track of the engine to which they are associated. As a result, they are now anonymous pointers rather than (pointer wide) integers. Does not affect compatibility except source compatibility when the value is combined with integral types.
• BUILD: Disable MQI if multi-threading is not enabled.

[Dec 27 2021]

• FIXED: print_term/2 from entering a loop. Also fixes unneeded parenthesis in lists.
• FIXED: finding clauses from a source location could crash on thread local predicates

[Dec 23 2021]

• FIXED: conjunction/disjunction.
• FIXED: print_term/2: respect write options when computing with of native output.
• MODIFIED: print_term/2 to get the default right margin from tty_size if the output is a tty and tty_size/2 succeeds.
• ENHANCED: mkconj/3 and mkdisj/3 to produces a right-grouped term, e.g. ?- mkconj((a,b),c, Conj) Conj = (a,b,c)

  (was Conj = ((a,b),c)).

• FIXED: We must preserve the pack registration when creating a saved state to make loading foreign resources work.
• ENHANCED: main/0 to avoid setting up application signal handling and termination when run interactively.

[Dec 22 2021]

• FIXED: Issue#917: separate S_DYNAMIC and S_MULTIFILE. Jos de Roo.
• ADDED: print_term/2: options fullstop(Boolean) and nl(Bool). Also lots of documentation restyling and removed old conditional compilation.
• ENHANCED: print_term/2 to deal with operator expressions that exceed the line width.
• FIXED: print_term/2: max priority of list elements and compound term arguments to 999 to force parenthesis.
• FIXED: Issue#917: WAM Table mismatch: wam_table[119(s_static)] == wam_table[124(s_multifile)]

[Dec 21 2021]

• SNAP: Reverted to core20 because Qt is broken on core20.
• FIXED: Ensure VMI instruction are on unique addresses. This patch extends 7bf463db4dcc7b4e27c820ef8fc6f94fd8116720 for the case that two VMIs jump to the same real implementation.
• SNAP: Trying to switch to core20 base. See https://github.com/octave-snap/octave-snap/issues/67

[Dec 20 2021]

• PORT: Guarantee two VM instructions are not optimized to use the same code.

[Dec 19 2021]

• FIXED: Ensure bigints are properly indexed on 32-bit platforms.
• PORT: On MacOS fat executables, both try fat-darwin and the actual archirecture when searching foreign resources.
• PORT: Set archirecture name of fat packages to fat.
• PORT: Support generation of MacOS universal (fat) binaries. Also updates minimum supported MacOS version to 10.14.

[Dec 18 2021]

• PORT: Dynamically determine actual architecture on MacOS
• PORT: Install openssl.cnf with MacOS dependencies (scripts/macos-deps.sh)

[Dec 17 2021]

• PORT: By default disable tcmalloc for MacOS as it causes a crash in setlocale() for Monterey.
• ADDED: Support '*' to print the most last choicepoint when a toplevel goal succeeded deterministically.
• ADDED: print_last_choicepoint/0,2.
• ENHANCED: Make explain/1 use the message system and the new terminal hyperlinks.
• ENHANCED: explain/1: hide system references.
• PORT: Building an apple bundle using Qt6
• PORT: Updated script for MacOS dependencies
• DOC: return type for PL_put_variable(), PL_put_bool() and PL_put_atom() is int.

[Dec 16 2021]

• ENHANCED: ord_subtract/3: use => rules to trap wrong calls and stop when the list of elements to be subtracted is exhausted.

[Dec 15 2021]

• FIXED: Handle new terminal hyperlink elements in message_to_string/2
• PORT: MacOS to deal with installation directory for libjpeg as installed by Macports. This patch also disables more Macports and Homebrew locations if we provide our own dependencies.

[Dec 14 2021]

• BUILD: By default use Macports gcc11 (gcc-mp-11)
• EHNANCED: SICStus datime/2 emulation now supports mode datime(-When, +Datime).

[Dec 13 2021]

• ADDED: hyperlink/2 as a hook to adding hyperlinks.
• ADDED: random_subseq/3 and random_numlist/4 to library(random). Compatible with SICStus.

[Dec 11 2021]

• ENHANCED: Use new url(Location) message line elements throughout.
• ADDED: Introduce url(Location) and url(URL, Label) message line elements.
• PORT: Fixed cmake issue for MacOS Homebrew dependencies.

[Dec 10 2021]

• DOC: edit/0.
• FIXED: thread_update/2 when no change is made to the target module should still wakeup.

[Dec 9 2021]

• ADDED: prolog_choice_attribute/3: clause attribute to find the next candidate clause.
• FIXED: Initial value for the Prolog flat on_warning must be print.

[Dec 8 2021]

• FIXED: Stack trace line-level location when parenthesis are used.

[Dec 6 2021]

• MODIFIED: write_term/3 option brace_terms behavior was the inverse of the documentation. As the docs describe what one would expect and is consistent with YAP, the implementation is fixed. We do not expect this option to be frequently used. Code using brace_terms(true) must be updated to use brace_terms(false). If you need to do a runtime check to beor conditional compilation compatible with older versions, one can use this condition to verify the correct new behavior.

  term_string({a}, S, [brace_terms(false)]), S == "{}(a)"

• FIXED: gen_assoc/3. This patch also removes the ground tests for is_assoc/1 and updates documentation. By Peter Ludemann.
• FIXED: Missing import into library(listing).

[Dec 5 2021]

• DOC: Added the rbtrees, statistics and fastrw libraries to the main documentation to make them available in help/1.
• DOC: Added library(rbtrees) to main documentation to make it work in help/1.

[Dec 1 2021]

• REFACTOR: library(rbtrees) to use more => style rules and use det/1. This refactoring guards at practically zero overhead cost against errors such as passing variable rather than a Red-Black tree, passing an invalid Red-Black tree. This patch makes the library strictly stead-fast. Finally, many test cases are added.

  Fix is_rbtree/1 fail condition; use => in more places

[Dec 4 2021]

• ADDED: write_term/2: option quote_non_ascii. This option is enabled by default for write_canonical/1.
• ADDED: PL_write_term(): PL_WRT_QUOTE_NON_ASCII flag
• FIXED: write_canonical/1 to use the brace_terms option as false.
• FIXED: Make write/1 and friends escape characters that the stream cannot represent.

[Dec 3 2021]

• FIXED: write/1 and friends: we must check that the first character can be represented by the stream.
• ADDED: Server socket support to SICStus 4 library(sockets) emulation.

[Dec 2 2021]

• FIXED: If we abort in the tracer from a redo port that is on a foreign predicate we must discard this (foreign) frame.

[Dec 1 2021]

• ADDED: pack_install/1 to support pack_version(2). in pack.pl. Version 2 changes the names of the exported environment variables that control building the pack. This was necessary to avoid conflicts with build environments. As an incompatible change was required anyway we took the opportunity to rationalise all the variable names.

[Nov 29 2021]

• ADDED: pack_install/2: option test(Boolean) to skip the pack tests.

[Nov 28 2021]

• PORT: First attempt to support MacOs M1 with brew deps in /opt/homebrew
• ENHANCED: library(assoc): partial rewrite to use SSU (=>/2) to generate errors when called with invalid input.

[Nov 26 2021]

• ENHANCED: Base clause indexing hash for indirect types (strings, bigints and rationals on the start, end and length if the size exceeds 4 machine words. Without, the time to compute the hash easily becomes dominant. Found by Rick Workman.
• REFACTOR: Get all index key computation in one place.

[Nov 25 2021]

• ADDED: pack_install/1 and friends: provide an environment variable PREFIX for installing global objects.

[Nov 24 2021]

• BUILD: Provide more control over the PGO build.
• ADDED: argv_options/3 to process type number

[Nov 22 2021]

• FIXED: profile/1 involving code executed in a temporary module.
• MODIFIED: This patch modifies PL_prof_type_t, the interface to extend the SWI-Prolog profiler. Foreign code using this may need to be updated. Most likely only used by xpce.

[Nov 20 2021]

• MODIFIED: Issue#900: Renamed PL_version() to PL_version_info(). Provides a macro for backward (source) compatibility.
• FIXED: Issue#105: dif/2 wrong result. This patch is a major rewrite for dif/2. Where the previous version contained or nodes that were considered satisfied based on a count, the new version verifies the individual unifications of the unifier produced by unifiable/3. The count fails, both too low and too high, as a result of multiple unifications in a single unification as well as subterm sharing in the input terms.

[Nov 18 2021]

• TEST: More dif/2 tests.
• FIXED: dif/2: we should ignore unrelated attributes.

[Nov 17 2021]

• FIXED: Issue#907: failure to fully reclaim clause indexes under some loads.

[Nov 16 2021]

• CMAKE: Support older CMake versions.
• FIXED: Saved state handling of a dict whose first key value (in the internal order) and tag are both avoid variables. This patch is less invasive than 4de9114a76cd44659591296627e999cf1072d744.

[Nov 15 2021]

• FIXED: Saved state handling of a dict whose first key value (in the internal order) and tag are both avoid variables. Reported by Matt Lilley.
• TEST: Migrate dif/2 tests to plunit.
• FIXED: dif/2: pending constraints on sharing inside the terms.

[Nov 14 2021]

• FIXED: pack_install/1: if no foreign steps are required, skip them.
• FIXED: pack_install/1: message indicating foreign install step.

[Nov 12 2021]

• STYLE: list_void_declarations/0, part of checks after make/0 to list predicates defined as discontuguous/1 while they have no clauses. This is, according to ISO, not a bug as such predicates are considered to be defined.
• FIXED: Be more relaxed about existence of the current predicate when pushing and popping the compilation context.

[Nov 11 2021]

• ENHANCED: Report failed build steps because no tools was willing to do the job. Pass -DCMAKE_BUILD_TYPE=Type, which may be set from the options to pack_install/2.
• ENHANCED: Get version info into the Prolog flag. Now uses CMake rather than a shell script and provides a new Prolog flag cmake_build_type.
• FIXED: pack_install/1 install step for make based packages.
• FIXED: Rebuilding GNU-style packages failed due to catching wrong exception.

[Nov 10 2021]

• FIXED: pack_rebuild/1 for CMake configurations.
• ADDED: A file <home>/cmake/swipl.cmake that provides generics to use CMake for building SWI-Prolog packs.
• DOC: Updated CMake build instructions.

[Nov 8 2021]

• ADDED: pack_install/1: reorganized the code building foreign resources. This code is now in a new library(build/tools) and uses a plugin architecture that deals with Conan, CMake and GNU tools (autoconf etc.). The changes are intended to be fully compatible with the old system. The build system now supports more tools and provides mechanisms for structured extensions.

[Nov 10 2021]

• DOC: meta_predicate/1: updated mode declarations.

[Nov 8 2021]

• EHNACED: pack_rebuild/1,2 for CMake based packages to use `cmake --build and cmake --install` for the build and install steps rather than calling make, ninja, etc. directly. Suggested by Wouter Beek.
• MAINTENANCE: Possible segv in retract/1 when compiled using O_DEBUG.

[Nov 7 2021]

• FIXED: Possible race conditions between the various ways a thread can be joined.
• FIXED: Do not start a new thread to join garbage collected threads while shutting down the system.
• MAINTENANCE: On a system error we only go into interactive mode if both stdin and stderr are connected to a terminal. Otherwise we print the message, C and Prolog stack and abort.
• MAINTENANCE: Use of guarded C-stack using sigaltstack() doesn't go with ASAN. Results in the error below. Disabled guarding the C stack when compiling using address sanitizer. ``` =101190=ERROR: AddressSanitizer failed to deallocate 0x2000 (8192) bytes at address 0x6250000b1900 =101190=AddressSanitizer CHECK failed: ../../../../src/libsanitizer/sanitizer_common/sanitizer_posix.cc:60 "(("unable to unmap" && 0)) != (0)" (0x0, 0x0)

  ```

[Nov 3 2021]

• FIXED: CMake packs must use environment variables.
• ADDED: Support ninja builds when using CMake
• FIXED: pack_install/1,2: If we use CMake for configuration, we should also build in the CMake directory.
• TEST: Signalled thread may already be dead.

[Nov 2 2021]

• ADDED: pack_install/1,2: provide pack_install(.) to add the local directory to the pack registry and build it. Also add option link(true) and rebuild(When) to provide more fine control over the build.
• FIXED: pack_install/1,2: do not remove contents if the package registered as a symbolic link.
• FIXED: memberchk/2 for partial lists where the unbound part is constrained. Reported on Discourse by Abramo Bagnara.
• BUILD: Avoid GCC-11 warning

[Oct 31 2021]

• ENHANCED: Protect assertz/1 and friends (compiler) against C-stack overflows.
• ENHANCED: Use setjmp() instead of sigsetjmp() to reduce the overhead of the C-stack guarding.
• MAINTENANCE: Updated C calltree analysis for CMake build and new coding style and conventions.

[Oct 30 2021]

• FIXED: Fallback to find a place for packages to install executables.
• FIXED: Hash consistency on pointer sided integers for 64-bit bigendian machines. Only affects consistency of term_hash/2 over platforms.
• FIXED: Checking that an uncaught exception is caught in an outer environment, i.e., nested C<->Prolog callback.

[Oct 28 2021]

• FIXED: Make C-stack guarding work in threads.
• ENHANCED: Use C-stack guarding for read/1 and friends.
• FIXED: format/2,3: Term printing using ~[kpqw] did not propagate exception.

[Oct 27 2021]

• ENHANCED: Handle C-stack overflows gracefully on POSIX targets with sigaltstack().

[Oct 26 2021]

• PORT: Alignment on ppc64el. Better version than df1f0bf795a16edd313a2a25f0678ce044a4a71d
• ADDED: argv_options/3: allow including longer descriptions as header, usage and footer in the usage message.
• ADDED: argv_options/3: Allow the user to redefine the bindings for help. Suggested by @swi.
• PORT: Alignment on ppc64el (Debian). See https://github.com/SWI-Prolog/issues/issues/104

[Oct 25 2021]

• FIXED: pl_get_uint64() for GMP numbers on 32-bit systems.
• ADDED: argv_options/3,4: allow for disjunctive types.

[Oct 24 2021]

• ADDED: library(prolog_versions) to simplify demanding minimal version and features of the hosting Prolog system.
• ADDED: argv_options/4: options_after_arguments(false) option to stop processing options after the first positional argument.
• FIXED: Re-enable message//1 hook for print_message/2.
• ADDED: print_message/2: language detection for Windows for message generation.
• ADDED: win_get_user_preferred_ui_languages/2 to get access to the user's preferred UI languages on Windows.
• INSTALL: Windows: avoid confusing uninstall version message.

[Oct 22 2021]

• ADDED: message_property/2: tag(Tag) property to change ERROR and/or Warning.
• ADDED: print_message/2: Allow message term to text translation to be language specific.
• ENHANCED: Allow loading library(prolog_debug) if spy and/or nospy are defined as operators.
• FIXED: Do not reclaim memory on termination when we failed to terminate all threads.
• ENHANCED: Provide a non-polling process termination procedure for systems that do not have sem_timedwait() such as MacOS.
• ENHANCED: Improve performance for process shutdown on POSIX systems that support sem_timedwait() by avoiding a polling loop. This typically saves 0.1 second on the elapsed time for short lived executables.

[Oct 21 2021]

• ADDED: Allow --no-pce together with -c (compile) to produce a state that does not include xpce.
• FIXED: Retract for retract((a:-true)). Reported by Fernando Sáenz-Pérez.

[Oct 20 2021]

• ADDED: argv_options/3: type term

[Oct 19 2021]

• ADDED: argv_options/3 to provide a full featured and lightweight alternative to library(optparse).
• FIXED: format/2 and friends: verify error when emitting rubber.
• ADDED: format/2 and friends: support ~:|, the colon modifier for tab stops to insert a newline if the current column already passed the tab stop.

[Oct 18 2021]

• FIXED: Fixup singleton for cleanup of optspec validation.

[Oct 19 2021]

• FIXED: Issue#896: Claim that memory streams as used by e.g. open_string/2 are reported as repositionable. Reported by Matthijs van Otterdijk.
• ENHANCED: Allow 64-bit seek function to work on memory streams.
• ADDED: Allow stream contol functions to return whether the stream is repositionable.

[Oct 18 2021]

• FIXED: Make optparse:parse_type/3 hook work. Cleanup of optspec validation.
• MODIFIED: opt_parse/4: if an option is unknown only throw an exception, i.e., not first print the help message.
• ADDED: opt_parse/4: Allow using a string as help(Help) value.
• FIXED: det/1: avoid false non-determinism claim if all relevant choicepoints are debug choicepoints.

[Oct 14 2021]

• ENHANCED: library(rbtrees): error checks and more test cases.
• FIXED: Predicate access in nested transactions for clauses that are removed in the parent (or a previous nested) transaction. We must inspect the affected clauses of all parent transactions. Reported by Eric Zinda.

[Oct 11 2021]

• FIXED: Answer subsumption tabling case provided by Annie Liu.
• TEST: Tests for new thread_signal/2.
• ADDED: Predicate property sig_atomic. Currently only for the built-in sig_atomic/1.

[Oct 10 2021]

• DOC: Document new thread signal primitives.
• ADDED: thread signal blocking and unblocking.

[Oct 9 2021]

• FIXED: Delay signals in prolog_exception_hook/4.
• MODIFIED: Signal handling no longer backtracks. This implies it may set global variables.

[Oct 8 2021]

• ADDED: sig_pending/1 and sig_remove/2.

[Oct 10 2021]

• ADDED: sig_atomic/1 to run goals protected from signals. This predicate used to be available as the undocumented '$sig_atomic'/1. '$sig_atomic'/1 is now available from library(backcomp).
• ENHANCED: thread_signal/2: reduce the locked section

[Oct 11 2021]

• FIXED: thread_wait/2: return when condition is true before this predicate is called.
• FIXED: thread_wait/2: wait_preds option accepted non-predicate indicators.
• ADDED: sandbox: call_delays/2 as safe meta predicate

[Oct 6 2021]

• FIXED: Issue#889: swipl --abi-version crashed.

[Oct 5 2021]

• ENHANCED: trace/2 to delete that we are tracing this predicate if the port list is empty.

[Oct 1 2021]

• DOC: Document key pc of prolog_choice_attribute/3
• FIXED: 91d73fb8a859c6e0f0d97ff553f96903816bc18c triggers another case where the falsecount of a node can underflow during re-evaluation. Bit dubious.
• DOC: LaTeX formatting error

[Sep 30 2021]

• FIXED: possible failure to propagate changes in lazy monotonic tabling. This happens because answers added during lazy reevaluation are propagated eagerly, but '$idg_mono_affects_eager'/3 didn't find dependencies to non-lazy tables.

[Sep 29 2021]

• ADDED: pack_install/1 and friends: pass a prefix flag to CMake or configure that follows the same conventions as the installed Prolog system.
• ADDED: dcg_translate_rule/2 is now declared safe for use in sandboxes.
• ADDED: notraceall/0.

[Sep 28 2021]

• ADDED: Allow authors of packs to not have an email address or URL.

[Sep 27 2021]

• ADDED: PL_cvt_i_schar() for explicit signed character handling.
• ENHANCED: dict_options/2 in mode (-,+) to remove duplicate options, keeping the first.

[Sep 24 2021]

• ENHANCED: Cleanup code for format/2,3. Allow callback's to cooperate with ansi_format/3.

[Sep 23 2021]

• ADDED: prolog_listen/2,3: listen to thread create events.

[Sep 21 2021]

• ENHANCED: ord_intersection/2 to raise errors of the input is not a proper powerset.
• FIXED: Possible crash enumerating a trie holding indirect values against instantiated data. Reported by Eric Zinda.

[Sep 16 2021]

• FIXED: VMI_FUNCTIONS build now works with LDFUNC changes
• FIXED: Issue#883: Decompiler to preserve order of arguments to optimized +/2 and -/2 functions.

[Sep 15 2021]

• FIXED: Issue#882: Test failure if xpce is not added to the build. Reported by David Tonhofer.
• BUILD: Make building the docs works if X11 is not included.

[Sep 14 2021]

• FIXED: Completion of lazy monotonic tabling to exclude lazy monotonic tables without queued dependencies as there is no point in evaluating these now.
• FIXED: Lazy monotonic tabling detection that a mutual dependent monotonic dependency network is complete.

[Sep 11 2021]

• FIXED: Allow listing/1 from a temporary module.

[Sep 8 2021]

• ADDED: customize/edit command to accept --no-wait option. Requires latest xpce package. Can by used with editor plugin for terminator.

Package RDF

[Sep 6 2022]

• PORT: Make library(rdf_write) work without the RDF db.

Package archive

[Dec 21 2022]

• PORT: Simply use int64_t as older 3.x libarchive versions do not define la_int64_t. Simply using int64_t seems the easiest way out.

[May 9 2022]

• FIXED: Allow an open archive to be garbage collected.

[May 6 2022]

• CLEANUP: Renamed internal functions to make it clearer which context they're called in - added internal documentation about the state transitions - added AR_ERROR state (renamed AR_OPENED to AR_OPENED_ARCHIVE) - added archive_wrapper_init_value for initializing the blob - removed a double-free (ar->entry in read mode)

  Improved tests to check full file contents. Cleanup some CMake property checks.

[Apr 16 2022]

• CLEANUP: Removed references to libarchive versions before 3.0.0a - Version 3.0.0a was released 2008/05/26 - The "seek" functionality was added 2011/11//18 - The "filter count" functionality was added 2010/02/19 Changed the archive blob from PL_BLOB_NOCOPY to instead be allocated by PL_unify_blob(), which simplifies cleanup on some failure situations. Set blob fields to NULL after they have been freed. Removed unused free_archive()

[Apr 12 2022]

• TEST: Remove assumptions about the build environment and other details such that the tests also run in different environments such as the installed environment.

[Apr 9 2022]

• TEST: Added tests for code snippets in documentation and check_installation Fixed typos in documentation Added tests that cause memory leaks and exercise error conditions / failure

Package bdb

[Aug 23 2022]

• PORT: Support static linking

Package chr

[Aug 9 2022]

• WASM: Install generated files in wasm-preload

Package clib

[Jan 26 2023]

• FIXED: uri_iri/2 to not decode encoding &=; in the query string.

[Jan 9 2023]

• FIXED: detach_IO/1: Protect I/O stream against garbage collection.

[Nov 23 2022]

• TEST: Disable tests that require threads on the single threaded version.

[Sep 26 2022]

• ENHANCED: prolog_server/2: ensure the server thread terminates, also if the client disappears with an error. Improved docs.

[Sep 5 2022]

• TEST: Synchronize libraries included and tests included. Also includes library(filesex) into the Emscripten version.

[Sep 4 2022]

• PORT: Windows executable files may not have read access if they are a reparse point.

[Aug 30 2022]

• FIXED: relative_file_name(Dir, SameDir, Rel) to return Rel as `.` rather than ''.

[Aug 20 2022]

• TEST: Disable tests that need threads on the single threaded version.

[Aug 19 2022]

• WASM: Re-group plugins to make it easier to select only those that do not depend on OS features.
• PORT: Replace old K&R declarations

[Jul 7 2022]

• ADDED: library(sched), providing a start at accessing the OS scheduling primitives.

[Jun 28 2022]

• FIXED: read_line_to_codes/2: avoid line ending with \r if the \n is found just after a flush. This patch also includes a rewrite of this predicate and read_stream_to_codes/3 to use UTF-8 as intermediate representation rather than wchar_t, avoiding the need for UTF-16 surrogate pairs.

Package cpp

[Dec 6 2022]

• FIXED: PlQuery() should resolve the predicate in the target module if one is provided as well as set the context. This bug breaks completion in swipl-win.

[Dec 5 2022]

• TEST: Avoid encoding issues when running the tests.

[Dec 4 2022]

• TEST: Fixed PL_scan_options() test for 32-bit platforms.
• TEST: Avoid test_common.pl. Although avoiding duplication is good, it is not a good idea that when build with -DINSTALL_TESTS, this file ends up in the public library.

[Dec 3 2022]

• DOC: Fixed LaTeX errors and duplicate labels.

[Dec 2 2022]

• DOC: Add "philosophy" section on classes Remove some obsolete sections Some cleanup of markup
• ADDED: PlPredicate, PlModule classes, support Pltermv(0) Also removed some unused parameter defaults and clean up initialization checks.

[Nov 29 2022]

• DOC: fix description of how exceptions work

[Nov 26 2022]

• TEST: Disabled invalid tests on Windows.

[Nov 24 2022]

• DOC: more details about exception handling

[Nov 22 2022]

• TEST: Fixed C interface PL_scan_options() tests.

[Oct 20 2022]

• TEST: Renamed foreign function test module to test_ffi. This avoids a conflict (and confusion) with the ffi pack to run the tests interactively.

[Oct 18 2022]

• TEST: Added PL_scan_options example

[Oct 10 2022]

• TEST: Avoid dependency on gethostname introduced by the tests.

[Oct 6 2022]

• TEST: Remove .as_string.c_str() as this is unsafe.

[Oct 4 2022]

• DOC: Document both version 1 and version 2.
• DOC: Setup for documenting both SWI-cpp.h and SWI-cpp2.h

[Sep 24 2022]

• ENHANCED: added PlTerm::record(), PlTerm::write(), PlTerm_recorded, PlRewindOnFail(), PlStringBuffers Removed PlTerm::unify_*_check() Added example code for backtracking predicate that gets info on int types Fixing integer overloading for win32, MacOS - remove many of the overloaded methods and instead use names derived from the underlying SWI-Prolog PL_put_*() and PL_unify*()

[Sep 6 2022]

• DOC: Added a porting section
• PORT: Make SWI-cpp2.h compile on systems where `long int` is 32 bits (Win64). Patch by Peter Ludemann.

[Sep 5 2022]

• CLEANUP: better reuse of Prolog exceptions.

[Jul 7 2022]

• ENHANCED: Version 2 of C++ interface - removed some implicit conversions and constructors whose use can cause subtle bugs - made most conversions and constructors explicit - added subclass constructors to make Prolog types explicit and avoid some subtle bugs
  • added copy constructors, assignment operators - renamed handle_, ref_ to C_, for simplified "getter/setter" - added PlCheck() for easier calling of SWI-Prolog.h functions - removed conversion (cast) operator - added pseudo-exception PlFail for returning failure from a PREDICATE - also used by the unify_XXX_ex() methods - deprecated assignment operator for term unification - replaced by unify_XXX() and unify_XXX_ex() methods - added some support for std::string, std::wstring - and additional support for wchar_t - added some more methods that allow using PlTerm:xxx(...) instead of PL_xxx(t.get_term_t(), ...); also for PlAtom - added PlTerm::type(), PlTerm::is_variable(), etc. methods - moved atom_t handle into private PlAtom, term_t into private PlTerm - added get_atom_t(), get_term_t() - added verify(), is_valid(), reset() methods - some refactoring, e.g., PlTerm::check(), PlTerm::null - refactored the integer "getters" to get around problems with C++ built-in conversions and integer promotion. - refactored comparison methods, added PlTerm::compare() - replaced "int" as return type by "bool" in many places - use common C++ naming practice for class fields (suffixed by "_") - added unit tests - moved examples from test.cpp to unit tests file (cpp4pl.cpp, test_cpp.pl) - used C++ initializer lists where possible - added [[nodiscard]] to many methods - added [[deprecated]] to some methods - (internal: used a template class to handle some boilerplate)

[Jul 3 2022]

• ADDED: PlTerm casts for bool and uint32_t

Package http

[Jan 27 2023]

• FIXED: `1Inf -> 1.0Inf` syntax.

[Jan 23 2023]

• ENHANCED: More robust restoring of current output after redirection to the CGI stream.

[Jan 11 2023]

• ADDED: library(http/http_error): dynamic predicate suppress_code/1 to make the library silent on specific reply codes.
• ENHANCED: Avoid confusing "Unknown message" from library http/http_error.

[Jan 9 2023]

• FIXED: Avoid recursion when garbage collecting HTTP sessions under Redis session management.
• ENHANCED: Do not try to send websocket broadcast messages after shutdown progressed too far.

[Jan 6 2023]

• ADDED: library(http_unix_daemon) to broadcast http(shutdown) before calling halt(0).
• ENHANCED: http_absolute_uri/2 to use the setting http:public_scheme or the port to find the scheme (http or https)

[Jan 4 2023]

• ENHANCED: Redis http session plugin to use caching to speedup checking whether a session is alive.

[Dec 21 2022]

• FIXED: Issue#120: term//2 (term to HTML) rendering of infix terms if these contain "member" terms with arity 2.

[Dec 7 2022]

• TEST: Avoid using test condition bindings.

[Nov 23 2022]

• CONFIG: Reorganise installation and docs to distinguish core part we always want, the HTTP client and HTTP server libraries.

[Sep 23 2022]

• FIXED: term//2 from library(http/term_html) left a choicepoint.

[Sep 16 2022]

• WASM: Support more the HTML related infrastructure.
• PACKAGE: Include http_quasiquotations.pl and the term_html.pl imported from the Pengines package into the minimal installation.

[Sep 5 2022]

• TEST: Synchronize installed and tested packages.

[Sep 1 2022]

• DOC: http_open/3: missing docs due to empty line.

[Aug 19 2022]

• WASM: Provide a stripped down version for the WASM target, currently providing the library(http/html_write), the json and stream library.

[Aug 2 2022]

• ADDED: Mime type mappsing from .data to application/octet-stream.

[Aug 1 2022]

• ADDED: MIME type rules: added .wasm -> application/wasm.

[Jul 10 2022]

• FIXED: Also escape line terminators when writing graphql strings... ...as per https://spec.graphql.org/draft/#StringCharacter

[Jul 8 2022]

• ADDED: library(http/graphql) implementing a GraphQL reader and QQ

Package jpl

[Jul 18 2022]

• TEST: simplify & tidy unit tests Tidier, simpler JUnit tests, removing dead code and duplicated stuff, with reduced noise from succeeding tests (still available via REPORT flag, but now quieter by default).
• ENHANCED: non-recursive Term.getSubsts reimplementation This fixes another term-depth-limited issue with JPL's public API by reimplementing Term.getSubsts() non-recursively

[Jul 5 2022]

• ENHANCED: Non-recursive Term.getTerm reimplementation Replaces the original recursive implementation of Term.getTerm() etc. (which runs out of JVM stack for e.g. lists of more than a few thousand members) with a depth-unlimited non-recursive version (see Term.getLoop) and adds a couple of JUnit tests

[Jul 3 2022]

• ENHANCED: Non-recursive Term.put reimplementation Replaces the original recursive implementation of Term.put() etc. (which runs out of JVM stack for e.g. lists of more than a few thousand members) with a depth-unlimited non-recursive version (see Term.putLoop) and adds a couple of JUnit tests

[Jun 22 2022]

• TEST: Cleanup and enhancements.

Package ltx2htm

[Sep 18 2022]

• FIXED: Memory error.

[Aug 23 2022]

• PORT: Allow for static linking

Package mqi

[Dec 12 2022]

• TEST: Avoid recorsive Python exception

[Sep 2 2022]

• DOC: hard links to swipl manual
• DOC: hard links to swipl manual the "section references" do not get connected properly

Package odbc

[Dec 18 2022]

• PORT: More odbc type work around. As we do not use long [long] int sizes or availability, just leave them undefined and let unixODBC do its magic.
• PORT: Include patch from Debian for some 32-bit systems. Some versions of sql.h depend on HAVE_LONG_LONG. Our code does not use any of the properties for `long int`.

[Nov 23 2022]

• PORT: Allow compiling in single threaded mode.

Package pcre

[May 24 2022]

• TEST: Add Unicode>0xffff test

[Apr 6 2022]

• TESTS: Fixed tests to work on systems without pcre2 jit

[Apr 5 2022]

• DEBUG: Removed debugging prints. The print statement in the pcre_release() function is unsave as during proces cleanup the pattern may vanish before the regular expression.
• FIXED: Make comparison and printing the blob work for Unicode patterns.

[Mar 29 2022]

• ENHANCED: re_config/1 backtracks through all possible values re_config/1 fails if an invalid otption is given instead of throwing an error fixed some PCRE1 vs PCRE2 documentation for re_config/1 added a test to check that re_config/1's documentation is a complete list comparison now uses the pattern; blob-write also shows pattern fix bug in compare_pcres() that incorrectly resulted in equality

[Mar 27 2022]

• FIXED: memory leak if re_compile fails or throws an error

[Mar 25 2022]

• PORT: Make compiled and test using pcre2 10.31.
• PORT: Make work on systems that do not provide JIT support. Possibly it is better to fail on the option in that case?

[Mar 24 2022]

• ENHANCED: use pcre2 library instead of pcre1 - Issue #2 - Numerous small bug fixes and enhancements (e.g., handling of duplicate options, capture_type, error checking). - This commit takes advantage of refactoring that was done on the pcre1 code to make it easier to handle the pcre2 options (which are both more numerous and have a different underlying API). - Added new pcre2 options - Removed some obsolete options, preserving backwards compatibility where possible - The meaning of optimise(true) has changed - it now calls the JIT compiler - Renamed bsr(...) and newline(...) options to bsr2(...) and newline2(...) because the pcre2 interface has changed - compat(javascript) is replaced by alt_bsux(true) and extra_alt_bsux(true) - Code improvements: use uint32_t wherever possible instead of unsigned or int - Does not use the new pcre2_substitute() for re_replace/{4,5}, re_split/{3,4}, re_foldl/6 (however, some improvements have been made to the APIs for these). - Added test cases

[Mar 9 2022]

• FIXED: re_config/2 for jittarget may return a NULL string, crashing re_config/2. Mapped to failure.

[Feb 4 2022]

• ENHANCED: re_replace/{4,5}, re_split/{3,4} handle capture_type option - some refactoring - some bug fixes - added tests

[Jan 26 2022]

• FIXED: re_replace/4 can now handle duplicated back references (Issue #6) - added escapes for "$" and "\" Refactored "capture map" code Minor reformatting

[Jan 22 2022]

• ENHANCED: re_replace/5 with options list, similar to re_matchsub. There are still some "fixme" tests, related to global capture_type. Fixed: caching of compiled patterns with options. Renamed some predicates to make things clearer.

[Nov 23 2021]

• FIXED: re_config/1 throws error for all cases of invalid argument Added Unicode tests (for migration to PCRE2 Issue #2) Fixed uncleared exception Use convenience function or error returns Regularize some names Documentation had "optimize" option; code had "optimise"
  • allow both Fixed detection of type suffix in pattern names Fix potential memory leaks and missed error checks Refactor conflated pcre return code PL_... return code Document return codes Lower-case cmake functions that are lower-case elsewhere Small fixes from turning on more compiler warning

Package pengines

[Sep 16 2022]

• PACKAGE: Move term_html.pl to the http package. It is not specific for Pengines.

Package pldoc

[Jan 25 2023]

• FIXED: Possible race condition when pldoc is loaded concurrently from multiple threads. Hook is installed before the predicates it needs are defined.

[Nov 23 2022]

• CONFIG: Make most of PlDoc work in the single threaded version.
• CONFIG: Make PlDoc work if the HTTP server components are not part of the configuration.

[Nov 20 2022]

• ENHANCED: Source button to prefer loaded code over xref data.

Package plunit

[Dec 7 2022]

• ADDED: current_test_unit/2 to enumerate the available unit tests.

[Dec 2 2022]

• MODIFIED: extend message term plunit(end(Unit)) to plunit(end(Unit, Summary)) where summary provides the status and time spend on the unit.

Package redis

[Jan 2 2023]

• ENHANCED: Avoid hanging connection on invalid authentication.

[Dec 30 2022]

• ADDED: Split authentication for the redis instances from the sentinel network.
• FIXED: Also connecting to the sentinels require authentication.

[Dec 28 2022]

• ADDED: Connect to a master through a sentinel network.
• ADDED: Support Redis TLS connections.

[Dec 12 2022]

• TEST: More relaxed timing to make test pass on heavily loaded machines.

[Oct 18 2022]

• FIXED: Handle push messages that do not include a pubsub header (@swi).

Package semweb

[Dec 8 2022]

• PORT: Support full Unicode input for ntriples and trutle on Windows. Based on PR#108 by @mgondan.

[Nov 21 2022]

• FIXED: rdfa.pl: Avoid dependency oin development tools

[Oct 3 2022]

• DOC: Fixed LaTeX errors.

[Sep 5 2022]

• TEST: Make tests work in restricted single threaded version.

[Aug 20 2022]

• BUILD: add cmake dependency
• PORT: Make the turtle and ntriples readers and writers load without library(semweb/rdf_db). Still issues using them.
• PORT: Do build build library(semweb/rdf_db) in single threaded mode. In this mode the semweb only provides the turtle and ntriple readers and writers.

[Jun 21 2022]

• FIXED: Better ordering of pre_ground_object/2 clauses

Package sgml

[Jan 18 2023]

• FIXED: Back skip over UTF-16. @UweR.

[Jan 17 2023]

• ENHANCED: Partial support for full Unicode handling ion Windows (UTF-16).

[Jan 16 2023]

• ADDED: Add ignore_doctype(+Bool) option to explicitly ignore DOCTYPEs embedded in XML

[Aug 19 2022]

• CLEANUP: Avoid function pointers with incomplete prototypes and make the install function follow the conventions to allow for statically linked extensions.

Package ssl

[Jan 14 2023]

• FIXED: Allow HTTPS server to be started as Interface:Port.

[Nov 29 2022]

• FIXED: crypto_password_hash/2,3 assumed byte encoding for base64_encoded/3 while the default changed to UTF-8. Added test.

[Nov 23 2022]

• TEST: Drop tests when single threaded.

[Aug 13 2022]

• FIXED: Zero the PL_CRYPTO_HASH_CONTEXT struct on first allocation

[Apr 24 2022]

• PORT: RTools42, link order for OS libs, add libz

[May 6 2022]

• BUILD: Ensure HOME is set to a writable path for generating the SSL test certificates.

[May 3 2022]

• PORT: Avoid deprecated SecKeychainOpen().

[Mar 8 2022]

• ADDED: Implement clean shutdown hook support for HTTPS.

[Feb 28 2022]

• TEST: test_ssl won't SIGPIPE without signals

[Feb 21 2022]

• PORT: Override OPENSSL_OS_LIBS with cmake -Detc. For some reasons, RTools42 needs libz included in the OPENSSL_OS_LIBS

Package swipl-win

[Jan 25 2023]

• PORT: qmake.pro and includes to compile in QtCreator (up to Qt 6.4)

[Nov 23 2022]

• FIXED: Check return codes of many operations on lists.

[Jul 22 2022]

• PORT: Changes for SWI-cpp.h API Version 2

Package windows

[Oct 26 2022]

• PORT: add libname to install() routine [Oct 25 2022]
• PORT: add libname to install() routine From this discussion: https://swi-prolog.discourse.group/t/static-executable-dstatic-extensions/5710/2 "the install function of a library must be called install_<libname> and the Prolog side must use use_foreign_library/1"

Package xpce

[Jan 24 2023]

• TEST: Skip test if xpce cannot be found.

[Dec 10 2022]

• FIXED: file<-time default was accidentally to access where it used to be modified.

[Nov 30 2022]

• PORT: Make the xpce source compile clean using GCC -pedantic flag. Note that an important part of the problems is that XPCE threads data and function pointers the same. This used to work with a cast to `void*`. This is not allowed in C11. It is allowed to cast both pointers and functions to intptr_t, so with a little detour we get where we need to be. Time will tell whether we will see systems where this conversion is not allowed.

[Nov 23 2022]

• CONFIG: Avoid dependency on threads.

[Oct 29 2022]

• FIXED: replace internal expand_path/2 with absolute_file_name/3 old code could not handle aliases like swi(library/clp) only swi('library/clp')

[Oct 4 2022]

• ENHANCED: PceEmacs: properties of predicates in status line (better text and ignore more irrelevant).
• ADDED: gxref_called/2 hook into gxref/0 to allow silencing predicates that are called by means of hooks or some other mechanism.
• FIXED: gxref/0: edit predicate on click to properly handling included files.

[Sep 20 2022]

• PORT: suppress uninitialized warning in msys2 gcc

[Sep 19 2022]

• PORT: msys2-compatible mkdir and wildcards

[Sep 7 2022]

• FIXED: PceEmacs sgml mode: use setup_call_cleanup/3 to ensure Prolog streams to editors are always closed.

[Sep 4 2022]

• TEST: Create files and directories in temp.

[Sep 2 2022]

• PORT: Avoid using Windows stat()

Package zlib

[Nov 23 2022]

• TEST: Disable tests that requires threads

[Sep 6 2022]

• TEST: Disable socket based tests if sockets are not supported.