[libc++][doc] Update paper status.

[Mordante]

Summary

Update the status with the approved papers and LWG-issues in the October 2021 plenary.

[Mordante]

libcxx/docs/Status/FormatIssues.csv

7

The status of in progress is correct, I already looked at it while working on P2216.

[jloser]

libcxx/docs/Status/Cxx2bPapers.csv

34

Feel free to put this as in progress if you'd like. I have a PR for it at https://reviews.llvm.org/D111197

[Mordante]

libcxx/docs/Status/Cxx2bPapers.csv

34

In general we don't use In Progress for the official paper status only for subprojects for aligning the work.
But lets see which patch lands first and then make sure the second one sets the proper state for P2251.

[ldionne]

We seem to be missing the LWG issues that were moved in the meeting. They are in http://wg21.link/p2450r0.

libcxx/docs/Status/Cxx20Papers.csv

203

This is a dupe with the previous line.

libcxx/docs/Status/Cxx2bPapers.csv

34

Yeah let's just rebase @jloser 's patch on top of this one and mark the paper as complete.

[Mordante]

Addresses review comments.
Update the LWG issues.

[ldionne]

Thanks!

Ideally, we'd have a way to avoid duplicating issues in e.g. Cxx20Issues.csv and RangesIssues.csv by having some sort of tagging system, but csv isn't really the best tool for that.

[Mordante]

As discussed on Discord I want to look at removing the duplication, but in a separate patch.

libcxx/docs/Status/Cxx20Papers.csv

 "`P2116 <https://wg21.link/P2116>`__","LWG","Remove tuple-like protocol support from fixed-extent span","Prague","|Complete|","11.0"
 "`P2231 <https://wg21.link/P2231>`__","LWG","Missing constexpr in std::optional and std::variant","February 2021","|In progress|","13.0"
 "`P2325 <https://wg21.link/P2325>`__","LWG","Views should not be required to be default constructible","June 2021","|In progress|",""
 "`P2210R2 <https://wg21.link/P2210R2>`__","LWG",Superior String Splitting,"June 2021","",""
 "`P2216R3 <https://wg21.link/P2216R3>`__","LWG",std::format improvements,"June 2021","",""
 "`P2281R1 <https://wg21.link/P2281R1>`__","LWG",Clarifying range adaptor objects,"June 2021","",""
 "`P2328R1 <https://wg21.link/P2328R1>`__","LWG",join_view should join all views of ranges,"June 2021","",""
 "`P2367R0 <https://wg21.link/P2367R0>`__","LWG",Remove misuses of list-initialization from Clause 24,"June 2021","",""
+"`P2372 <https://wg21.link/P2372>`__","LWG","Fixing locale handling in chrono formatters","October 2021","",""
+"`P2415 <https://wg21.link/P2415>`__","LWG","What is a ``view``","October 2021","",""
+"`P2418 <https://wg21.link/P2418>`__","LWG","Add support for ``std::generator``-like types to ``std::format``","October 2021","",""
+"`P2432 <https://wg21.link/P2432>`__","LWG","Fix ``istream_view``","October 2021","",""

libcxx/docs/Status/Cxx2bIssues.csv

 `3546 <https://wg21.link/LWG3546>`__,"``common_iterator``'s postfix-proxy is not quite right","June 2021","",""
 `3548 <https://wg21.link/LWG3548>`__,"``shared_ptr`` construction from ``unique_ptr`` should move (not copy) the deleter","June 2021","",""
 `3549 <https://wg21.link/LWG3549>`__,"``view_interface`` is overspecified to derive from ``view_base``","June 2021","",""
 `3551 <https://wg21.link/LWG3551>`__,"``borrowed_{iterator,subrange}_t`` are overspecified","June 2021","",""
 `3552 <https://wg21.link/LWG3552>`__,"Parallel specialized memory algorithms should require forward iterators","June 2021","",""
 `3553 <https://wg21.link/LWG3553>`__,"Useless constraint in ``split_view::outer-iterator::value_type::begin()``","June 2021","",""
 `3555 <https://wg21.link/LWG3555>`__,"``{transform,elements}_view::iterator::iterator_concept`` should consider const-qualification of the underlying range","June 2021","",""
 "","","","",""
+`2191 <https://wg21.link/LWG2191>`__,"Incorrect specification of ``match_results(match_results&&)``","October 2021","",""
+`2381 <https://wg21.link/LWG2381>`__,"Inconsistency in parsing floating point numbers","October 2021","",""
+`2762 <https://wg21.link/LWG2762>`__,"``unique_ptr operator*()`` should be ``noexcept``","October 2021","",""
+`3121 <https://wg21.link/LWG3121>`__,"``tuple`` constructor constraints for ``UTypes&&...`` overloads","October 2021","",""
+`3123 <https://wg21.link/LWG3123>`__,"``duration`` constructor from representation shouldn't be effectively non-throwing","October 2021","",""
+`3146 <https://wg21.link/LWG3146>`__,"Excessive unwrapping in ``std::ref/cref``","October 2021","",""
+`3152 <https://wg21.link/LWG3152>`__,"``common_type`` and ``common_reference`` have flaws in common","October 2021","",""
+`3293 <https://wg21.link/LWG3293>`__,"``move_iterator operator+()`` has incorrect constraints","October 2021","",""
+`3361 <https://wg21.link/LWG3361>`__,"``safe_range<SomeRange&>`` case","October 2021","",""
+`3392 <https://wg21.link/LWG3392>`__,"``ranges::distance()`` cannot be used on a move-only iterator with a sized sentinel","October 2021","",""
+`3407 <https://wg21.link/LWG3407>`__,"Some problems with the wording changes of P1739R4","October 2021","",""
+`3422 <https://wg21.link/LWG3422>`__,"Issues of ``seed_seq``'s constructors","October 2021","",""
+`3470 <https://wg21.link/LWG3470>`__,"``convertible-to-non-slicing`` seems to reject valid case","October 2021","",""
+`3480 <https://wg21.link/LWG3480>`__,"``directory_iterator`` and ``recursive_directory_iterator`` are not C++20 ranges","October 2021","",""
+`3498 <https://wg21.link/LWG3498>`__,"Inconsistent ``noexcept``-specifiers for ``basic_syncbuf``","October 2021","",""
+`3535 <https://wg21.link/LWG3535>`__,"``join_view::iterator::iterator_category`` and ``::iterator_concept`` lie","October 2021","",""
+`3554 <https://wg21.link/LWG3554>`__,"``chrono::parse`` needs ``const charT*`` and ``basic_string_view<charT>`` overloads","October 2021","",""
+`3557 <https://wg21.link/LWG3557>`__,"The ``static_cast`` expression in ``convertible_to`` has the wrong operand","October 2021","",""
+`3559 <https://wg21.link/LWG3559>`__,"Semantic requirements of ``sized_range`` is circular","October 2021","",""
+`3560 <https://wg21.link/LWG3560>`__,"``ranges::equal`` and ``ranges::is_permutation`` should short-circuit for ``sized_ranges``","October 2021","",""
+`3561 <https://wg21.link/LWG3561>`__,"Issue with internal counter in ``discard_block_engine``","October 2021","",""
+`3563 <https://wg21.link/LWG3563>`__,"``keys_view`` example is broken","October 2021","",""
+`3566 <https://wg21.link/LWG3566>`__,"Constraint recursion for ``operator<=>(optional<T>, U)``","October 2021","",""
+`3567 <https://wg21.link/LWG3567>`__,"Formatting move-only iterators take two","October 2021","",""
+`3568 <https://wg21.link/LWG3568>`__,"``basic_istream_view`` needs to initialize ``value_``","October 2021","",""
+`3570 <https://wg21.link/LWG3570>`__,"``basic_osyncstream::emit`` should be an unformatted output function","October 2021","",""
+`3571 <https://wg21.link/LWG3571>`__,"``flush_emit`` should set ``badbit`` if the ``emit`` call fails","October 2021","",""
+`3572 <https://wg21.link/LWG3572>`__,"``copyable-box`` should be fully ``constexpr``","October 2021","",""
+`3573 <https://wg21.link/LWG3573>`__,"Missing Throws element for ``basic_string_view(It begin, End end)``","October 2021","",""
+`3574 <https://wg21.link/LWG3574>`__,"``common_iterator`` should be completely ``constexpr``-able","October 2021","",""
+`3580 <https://wg21.link/LWG3580>`__,"``iota_view``'s ``iterator``'s binary ``operator+`` should be improved","October 2021","",""
+`3581 <https://wg21.link/LWG3581>`__,"The range constructor makes ``basic_string_view`` not trivially move constructible","October 2021","",""
+`3585 <https://wg21.link/LWG3585>`__,"``variant`` converting assignment with immovable alternative","October 2021","",""
+`3589 <https://wg21.link/LWG3589>`__,"The ``const`` lvalue reference overload of ``get`` for ``subrange`` does not constrain ``I`` to be ``copyable`` when ``N == 0``","October 2021","",""
+`3590 <https://wg21.link/LWG3590>`__,"``split_view::base() const &`` is overconstrained","October 2021","",""
+`3591 <https://wg21.link/LWG3591>`__,"``lazy_split_view<input_view>::inner-iterator::base() &&`` invalidates outer iterators","October 2021","",""
+`3592 <https://wg21.link/LWG3592>`__,"``lazy_split_view`` needs to check the simpleness of Pattern","October 2021","",""
+`3593 <https://wg21.link/LWG3593>`__,"Several iterators' ``base() const &`` and ``lazy_split_view::outer-iterator::value_type::end()`` missing ``noexcept``","October 2021","",""
+`3595 <https://wg21.link/LWG3595>`__,"Exposition-only classes proxy and postfix-proxy for ``common_iterator`` should be fully ``constexpr``","October 2021","",""
+"","","","",""

libcxx/docs/Status/Cxx2bPapers.csv

 "`P1328R1 <https://wg21.link/P1328R1>`__","LWG","Making std::type_info::operator== constexpr","June 2021","",""
 "`P1425R4 <https://wg21.link/P1425R4>`__","LWG","Iterators pair constructors for stack and queue","June 2021","",""
 "`P1518R2 <https://wg21.link/P1518R2>`__","LWG","Stop overconstraining allocators in container deduction guides","June 2021","|Complete|","13.0"
 "`P1659R3 <https://wg21.link/P1659R3>`__","LWG","starts_with and ends_with","June 2021","",""
 "`P1951R1 <https://wg21.link/P1951R1>`__","LWG","Default Arguments for pair Forwarding Constructor","June 2021","|Complete|","14.0"
 "`P1989R2 <https://wg21.link/P1989R2>`__","LWG","Range constructor for std::string_view","June 2021","",""
 "`P2136R3 <https://wg21.link/P2136R3>`__","LWG","invoke_r","June 2021","",""
 "`P2166R1 <https://wg21.link/P2166R1>`__","LWG","A Proposal to Prohibit std::basic_string and std::basic_string_view construction from nullptr","June 2021","|Complete|","13.0"
-"","","","","",""
+"","","","","",""
+"`P0288 <https://wg21.link/P0288>`__","LWG","``any_invocable``","October 2021","",""
+"`P0798 <https://wg21.link/P0798>`__","LWG","Monadic operations for ``std::optional``","October 2021","",""
+"`P0849 <https://wg21.link/P0849>`__","LWG","``auto(x)``: ``DECAY_COPY`` in the language","October 2021","",""
+"`P1072 <https://wg21.link/P1072>`__","LWG","``basic_string::resize_and_overwrite``","October 2021","",""
+"`P1147 <https://wg21.link/P1147>`__","LWG","Printing ``volatile`` Pointers","October 2021","",""
+"`P1272 <https://wg21.link/P1272>`__","LWG","Byteswapping for fun&&nuf","October 2021","",""
+"`P1675 <https://wg21.link/P1675>`__","LWG","``rethrow_exception`` must be allowed to copy","October 2021","",""
+"`P2077 <https://wg21.link/P2077>`__","LWG","Heterogeneous erasure overloads for associative containers","October 2021","",""
+"`P2251 <https://wg21.link/P2251>`__","LWG","Require ``span`` & ``basic_string_view`` to be Trivially Copyable","October 2021","",""
+"`P2301 <https://wg21.link/P2301>`__","LWG","Add a ``pmr`` alias for ``std::stacktrace``","October 2021","",""
+"`P2321 <https://wg21.link/P2321>`__","LWG","``zip``","October 2021","",""
+"`P2340 <https://wg21.link/P2340>`__","LWG","Clarifying the status of the 'C headers'","October 2021","",""
+"`P2393 <https://wg21.link/P2393>`__","LWG","Cleaning up ``integer``-class types","October 2021","",""
+"`P2401 <https://wg21.link/P2401>`__","LWG","Add a conditional ``noexcept`` specification to ``std::exchange``","October 2021","",""
+"","","","","",""

libcxx/docs/Status/FormatIssues.csv

 Number,Name,Assignee,Patch,Status,First released version
 `P0645 <https://wg21.link/P0645>`_,"Text Formatting",Mark de Wever,,|Partial|,
 `P1652 <https://wg21.link/P1652>`_,"Printf corner cases in std::format",Mark de Wever,`D103433 <https://reviews.llvm.org/D103433>`__,|Review|,
 `P1892 <https://wg21.link/P1892>`_,"Extended locale-specific presentation specifiers for std::format",Mark de Wever,`D103368 <https://reviews.llvm.org/D103368>`__,|Complete|,Clang 14
 `P1868 <https://wg21.link/P1868>`_,"width: clarifying units of width and precision in std::format (Implements the unicode support.)",Mark de Wever,"`D103413 <https://reviews.llvm.org/D103413>`__ `D103425 <https://reviews.llvm.org/D103425>`__ `D103670 <https://reviews.llvm.org/D103670>`__",|Complete|,Clang 14
 `P2216 <https://wg21.link/P2216>`_,"std::format improvements",Mark de Wever,,|In Progress|,
+`P2418 <https://wg21.link/P2418>`__,"Add support for ``std::generator``-like types to ``std::format``",Mark de Wever,,|In Progress|,
 `LWG-3242 <https://wg21.link/LWG3242>`_,"std::format: missing rules for arg-id in width and precision",Mark de Wever,`D103368 <https://reviews.llvm.org/D103368>`__,|Complete|,Clang 14
 `LWG-3243 <https://wg21.link/LWG3243>`_,"std::format and negative zeroes",,,|Not Started|,
 `LWG-3246 <https://wg21.link/LWG3246>`_,"What are the constraints on the template parameter of basic_format_arg?",,,|Not Started|,
 `LWG-3248 <https://wg21.link/LWG3248>`_,"std::format #b, #B, #o, #x, and #X presentation types misformat negative numbers",Mark de Wever,`D103433 <https://reviews.llvm.org/D103433>`__,|Review|,
 `LWG-3250 <https://wg21.link/LWG3250>`_,"std::format: # (alternate form) for NaN and inf",,,|Not Started|,
 `LWG-3327 <https://wg21.link/LWG3327>`_,"Format alignment specifiers vs. text direction",,,|Nothing To Do|,
 `LWG-3340 <https://wg21.link/LWG3340>`_,"Formatting functions should throw on argument/format string mismatch in [format.functions]",,,|Not Started|,
 `LWG-3371 <https://wg21.link/LWG3371>`_,"visit_format_arg and make_format_args are not hidden friends",Mark de Wever,`D103357 <https://llvm.org/D103357>`__,|Complete|,Clang 14
 `LWG-3372 <https://wg21.link/LWG3372>`_,"vformat_to should not try to deduce Out twice",,,|Not Started|,
 `LWG-3373 <https://wg21.link/LWG3373>`_,"{to,from}_chars_result and format_to_n_result need the 'we really mean what we say'",,,|Not Started|,
 `LWG-3462 <https://wg21.link/LWG3462>`_,"§[formatter.requirements]: Formatter requirements forbid use of fc.arg()",,,|Not Started|,
 `LWG-3539 <https://wg21.link/LWG3539>`_,"format_to must not copy models of output_iterator<const charT&>",,,|Not Started|,
 `LWG-3540 <https://wg21.link/LWG3540>`_,"§[format.arg] There should be no const in basic_format_arg(const T* p)",,,|Not Started|,
 `LWG-3541 <https://wg21.link/LWG3541>`_,"indirectly_readable_traits should be SFINAE-friendly for all types",,,|Not Started|,
 `LWG-3542 <https://wg21.link/LWG3542>`_,"basic_format_arg mishandles basic_string_view with custom traits",,,|Not Started|,
 `LWG-3544 <https://wg21.link/LWG3544>`_,"format-arg-store::args is unintentionally not exposition-only",,,|Not Started|,
+`LWG-3567 <https://wg21.link/LWG3567>`_,"Formatting move-only iterators take two",,,|Not Started|,
 
 `P1361 <https://wg21.link/P1361>`_,"Integration of chrono with text formatting",,,|Not Started|,
+`P2372 <https://wg21.link/P2372>`__,"Fixing locale handling in chrono formatters",,,|Not Started|,
 `LWG-3218 <https://wg21.link/LWG3218>`_,"Modifier for %d parse flag does not match POSIX and format specification",,,|Not Started|,
 `LWG-3230 <https://wg21.link/LWG3230>`_,"Format specifier %y/%Y is missing locale alternative versions",,,|Not Started|,
 `LWG-3241 <https://wg21.link/LWG3241>`_,"chrono-spec grammar ambiguity in [time.format]",,,|Not Started|,
 `LWG-3262 <https://wg21.link/LWG3262>`_,"Formatting of negative durations is not specified",,,|Not Started|,
 `LWG-3270 <https://wg21.link/LWG3270>`_,"Parsing and formatting %j with durations",,,|Not Started|,
 `LWG-3272 <https://wg21.link/LWG3272>`_,"%I%p should parse/format duration since midnight",,,|Not Started|,
 `LWG-3332 <https://wg21.link/LWG3332>`_,"Issue in [time.format]",,,|Not Started|,

libcxx/docs/Status/RangesIssues.csv

 `P2106R0 <https://wg21.link/P2106R0>`__,Range Algorithm Result Types,,
 
 `P2325R3 <https://wg21.link/P2325R3>`__,Views should not be required to be default constructible ,,
 `P2328R1 <https://wg21.link/P2328R1>`__,join_view should join all views of ranges,,
 `P2210R2 <https://wg21.link/P2210R2>`__,Superior String Splitting,,
 `P2281R1 <https://wg21.link/P2281R1>`__,Clarifying range adaptor objects,,
 `P2367R0 <https://wg21.link/P2367R0>`__,Remove misuses of list-initialization from Clause 24,,
 
+`P2415 <https://wg21.link/P2415>`__,"What is a ``view``",,
+`P2432 <https://wg21.link/P2432>`__,"Fix ``istream_view``",,
+
 `LWG3169 <https://wg21.link/lwg3169>`__, ranges permutation generators discard useful information,,
 `LWG3173 <https://wg21.link/lwg3173>`__, Enable CTAD for ref-view,,
 `LWG3179 <https://wg21.link/lwg3179>`__, subrange should always model Range,,
 `LWG3180 <https://wg21.link/lwg3180>`__, Inconsistently named return type for ranges::minmax_element,,
 `LWG3183 <https://wg21.link/lwg3183>`__, Normative permission to specialize Ranges variable templates,,
 `LWG3186 <https://wg21.link/lwg3186>`__, "ranges removal, partition, and partial_sort_copy algorithms discard useful information",,
 `LWG3191 <https://wg21.link/lwg3191>`__, std::ranges::shuffle synopsis does not match algorithm definition,,
 `LWG3276 <https://wg21.link/lwg3276>`__, Class split_view::outer_iterator::value_type should inherit from view_interface,,

 `LWG3533 <https://wg21.link/LWG3533>`__,"Make base() const & consistent across iterator wrappers that supports input_iterators",,
 `LWG3541 <https://wg21.link/LWG3541>`__,"indirectly_readable_traits should be SFINAE-friendly for all types",,
 `LWG3543 <https://wg21.link/LWG3543>`__,"Definition of when counted_iterators refer to the same sequence isn't quite right",,
 `LWG3546 <https://wg21.link/LWG3546>`__,"common_iterator's postfix-proxy is not quite right",,
 `LWG3549 <https://wg21.link/LWG3549>`__,"view_interface is overspecified to derive from view_base",,
 `LWG3551 <https://wg21.link/LWG3551>`__,"borrowed_{iterator,subrange}_t are overspecified",,
 `LWG3553 <https://wg21.link/LWG3553>`__,"Useless constraint in split_view::outer-iterator::value_type::begin()",,
 `LWG3555 <https://wg21.link/LWG3555>`__,"{transform,elements}_view::iterator::iterator_concept should consider const-qualification of the underlying range",,
+`LWG3361 <https://wg21.link/LWG3361>`__,"``safe_range<SomeRange&>`` case",,
+`LWG3392 <https://wg21.link/LWG3392>`__,"``ranges::distance()`` cannot be used on a move-only iterator with a sized sentinel",,
+`LWG3407 <https://wg21.link/LWG3407>`__,"Some problems with the wording changes of P1739R4",,
+`LWG3470 <https://wg21.link/LWG3470>`__,"``convertible-to-non-slicing`` seems to reject valid case",,
+`LWG3480 <https://wg21.link/LWG3480>`__,"``directory_iterator`` and ``recursive_directory_iterator`` are not C++20 ranges",,
+`LWG3535 <https://wg21.link/LWG3535>`__,"``join_view::iterator::iterator_category`` and ``::iterator_concept`` lie",,
+`LWG3559 <https://wg21.link/LWG3559>`__,"Semantic requirements of ``sized_range`` is circular",,
+`LWG3560 <https://wg21.link/LWG3560>`__,"``ranges::equal`` and ``ranges::is_permutation`` should short-circuit for ``sized_ranges``",,
+`LWG3563 <https://wg21.link/LWG3563>`__,"``keys_view`` example is broken",,
+`LWG3568 <https://wg21.link/LWG3568>`__,"``basic_istream_view`` needs to initialize ``value_``",,
+`LWG3572 <https://wg21.link/LWG3572>`__,"``copyable-box`` should be fully ``constexpr``",,
+`LWG3580 <https://wg21.link/LWG3580>`__,"``iota_view``'s ``iterator``'s binary ``operator+`` should be improved",,
+`LWG3581 <https://wg21.link/LWG3581>`__,"The range constructor makes ``basic_string_view`` not trivially move constructible",,
+`LWG3589 <https://wg21.link/LWG3589>`__,"The ``const`` lvalue reference overload of ``get`` for ``subrange`` does not constrain ``I`` to be ``copyable`` when ``N == 0``",,
+`LWG3590 <https://wg21.link/LWG3590>`__,"``split_view::base() const &`` is overconstrained",,
+`LWG3591 <https://wg21.link/LWG3591>`__,"``lazy_split_view<input_view>::inner-iterator::base() &&`` invalidates outer iterators",,
+`LWG3592 <https://wg21.link/LWG3592>`__,"``lazy_split_view`` needs to check the simpleness of Pattern",,
+`LWG3593 <https://wg21.link/LWG3593>`__,"Several iterators' ``base() const &`` and ``lazy_split_view::outer-iterator::value_type::end()`` missing ``noexcept``",,