[libc++][doc] Use issue labels.

[Mordante]

Summary

During the review of D111166 I had a private discussion with @ldionne to
avoid the duplication of the C++2b issues in the Ranges and Format
status pages. The main reason for duplicating them is to make it easier to
find them. The title of the paper may not always make it clear to which
project the paper belongs.

This commit removes all LWG-issues from the Ranges and Format status page
and adds labels for these issue in the C++20/C++23 issues list.

A quick scan revealed there are some issues that are missing a label since
they weren't on the ranges issue list. These can be labelled in a separate
commit. In that commit I'll also look for issues for the spaceship operator
and chrono.

[• Quuxplusone]

I like the idea (IIUC) of killing off the separate .csv files for different "projects"' worth of papers, and just using some sort of greppable tags in Cxx20Papers.csv and/or Cxx20Issues.csv.
How does one see how this would render in HTML? Care to render it and post a link to the rendered page somehow?

[Mordante]

This can be build by enabling LLVM_ENABLE_SPHINX in cmake and then build the target docs-libcxx-html.
I've posted a screenshot here https://pasteboard.co/xsbuKyAg6isv.png

[• Quuxplusone]

libcxx/docs/Helpers/Styles.rst

20–23

Looking at the screenshot, I suggest lighter shades; perhaps #E6E6FA, #FAFAD2, #7FFFD4, #B0E0E6, #FAEBD7, #F5F5DC.
https://www.w3schools.com/colors/colors_groups.asp
#CD5C5C and #1E90FF particularly are too dark to comfortably read black-text-on-X-background.

libcxx/docs/Status/Cxx20Issues.csv

304

I suggest no comma between tags.

[mumbleskates]

libcxx/docs/Helpers/Styles.rst

20–23

another possibility for background colors is to choose a strong primary with a middling opacity, which avoids becoming unreadable in high-contrast or inverted userstyles.

[Mordante]

The new output is here: https://pasteboard.co/8hGeesDkPium.png

libcxx/docs/Helpers/Styles.rst

20–23

I looked at your suggestions. I think the first two are too light, I picked a darker shade from the suggested group.

[Mordante]

Addresses review comments.

[Mordante]

libcxx/docs/Helpers/Styles.rst

20–23

I noticed this comment after I updated the colors. Do you have suggestions for alternative colors?

[mumbleskates]

This seems like a good ideal to work towards to me, as the organization of these issues is a bit messy.

Is this the final state we want the diff to be? Have we ensured all these papers exist in the other categories? I think I would like a better standin than "1234" for the paper number at the very least.

libcxx/docs/Helpers/Styles.rst

48

These replacements can and should hyperlink to the relevant papers page!

[jloser]

libcxx/docs/Helpers/Styles.rst

33

Do we plan on consistently using this? I see we used it in FormatIssues.csv and SpaceshipProjects.csv. Right now in the papers docs, we don't write anything (that, empty implies "Not Started"). Should we fill the empty ones in with "Not Started" or leave it as empty? I don't feel strongly, but I like consistency one way or another. I'm OK if you also see that as out-of-scope for this particular labeling PR.

[Mordante]

libcxx/docs/Helpers/Styles.rst

33

I think it would be nice to discuss that, but I think Discord would be a better place. When we want that change I don't mind to make a PR, but should be a separate PR.

48

That could be done is some cases. Chrono is tricky since at the moment all chrono issues are chrono formatting issues. But in the future chono can have its own page; I think there's enough left of C++20 chrono to warrant its own page.

Do we want page links and if so should we make a separate group for |format chrono|?

[• Quuxplusone]

libcxx/docs/Helpers/Styles.rst

48

Maybe I don't understand the context here... I thought the whole point of adding these colored labels was so that we could get rid of the separate "pages." I assumed that the ultimate PR would include

git rm libcxx/docs/Status/SpaceshipProjects.csv
git rm libcxx/docs/Status/SpaceshipPapers.csv
git rm libcxx/docs/Status/FormatPaper.csv
git rm libcxx/docs/Status/RangesPaper.csv

because now, if you want to see what's not-yet-done for a specific feature, you can just Ctrl+F for that feature's colored label on the main Cxx20 or Cxx2b page(s).

It would certainly be extra useful if the HTML page would let you "filter by tag," so that you could view just the [format] issues, or whatever. I don't mind if that CSS magic went into another PR, though.

OTOH, if the point of this PR is not to enable us to git rm those csv files listed above, then I don't understand what the point of this PR is.

[Mordante]

libcxx/docs/Helpers/Styles.rst

48

The goal is to only remove the duplication of the LWG-issues on the project status pages. Not the duplication of the papers nor removing those pages entirely.
For example the formatting paper P0645 has taken me the better part of year to implement and some parts are still work-in-progress/not started. Without a status page it will be hard for others to keep track of the status. If somebody wants help with these projects, it's rather easy to see what the status is. That way we can avoid multiple people working on the same feature.

The number of papers is quite small and they are often larger so may take multiple patches to implement them.
There's a huge number of LWG-issues and they are often small and easier the implement.
So that's the main motivation to handle these two differently.

I hope this clarifies the motivation for this patch better.

PS: I intend to remove the Format status page once <format> is implemented. Those who care about the details can find them in the git history.

[ldionne]

This direction LGTM and I like the rendered output shown by @Mordante! That way, we should be able to get rid of FormatIssues.csv, RangesIssues.csv & friends.

Regarding FormatPaper.csv, RangesPaper.csv & friends, those are used to break a single paper that is too much work to implement in a single go. So those would still stay after this change. I'm going to request changes so it shows up correctly in the review queue, but let's update the diff and move forward with this!

[Mordante]

Update the paper for its real review.

[Mordante]

libcxx/docs/Helpers/Styles.rst

48

These replacements can and should hyperlink to the relevant papers page!

For now I haven't done a hyperlink. I think it will give some issues with the papers related to both format and chrono. If we really want them it can be done in a separate commit.

[ldionne]

libcxx/docs/Status/RangesIssues.csv

2–30

It looks like we'll need to figure out what to do with those. I think they should just be moved to the appropriate CXXNPapers page and tagged with |ranges|. WDYT? This is fine to do in a separate commit, though.

[• Quuxplusone]

libcxx/docs/Status/Cxx20Issues.csv

180

Should this say |chrono|?

201

Should this say |chrono|?

210–211

Should these say |format|?

217

Should this say |format|?

271

Should this say |chrono|?

288

Should this say |chrono|?

libcxx/docs/Status/Cxx2bIssues.csv

45

Should this say |ranges|?

49–51

Should these say |ranges|?

116

Should this say |chrono| |format|? (Incidentally, I'd prefer this alphabetical order over your |format| |chrono|; but not a blocker.)

[Mordante]

Thanks for the reviews. I'll look at tagging more issues for a separate review.

libcxx/docs/Status/Cxx2bIssues.csv

116

As mentioned in the description I'd like to mark additional papers in a separate commit. Then I also want to look for spaceship related issues to be marked. I prefer to get the initial part in first to avoid getting merge conflicts (I'm sure I already have some).

I put |format| |chrono| in this order since it's logical to me, but I agree alphabetic order is better. I'll fix that prior to committing; one regex replacement and I'm done ;-)

libcxx/docs/Status/RangesIssues.csv

2–30

For implementing format I found it very useful to have the papers still available. So I prefer to keep them. A slightly longer answer is here https://reviews.llvm.org/D111458#inline-1062734. But we can discuss that post commit.

[Mordante]

I created a followup marking the issues @Quuxplusone identified and several more in D111935.
.

libcxx/docs/Status/Cxx20Issues.csv

210–211

No it should be |chrono|.

libcxx/docs/Status/Cxx2bIssues.csv

116

This is only |chrono|. The <chrono> header has its own parse function that's unrelated to <format>.

libcxx/docs/Helpers/Styles.rst

.. raw:: html
             font-style: italic;
          }
         .inreview { background-color: #FFFF99; }
         .partial {
             background-color: #2CCCFF;
             font-style: italic;
          }
         .complete { background-color: #99FF99; }
+        .chrono { background-color: #D8BFD8; }
+        .format { background-color: #FFE4B5; }
+        .ranges { background-color: #7FFFD4; }
+        .spaceship { background-color: #B0E0E6; }
       </style>
 
 .. role:: notstarted
 .. role:: nothingtodo
 .. role:: inprogress
 .. role:: inreview
 .. role:: partial
 .. role:: complete
 
 .. |Not Started| replace:: :notstarted:`Not Started`
 .. |Nothing To Do| replace:: :nothingtodo:`Nothing To Do`
 .. |In Progress| replace:: :inprogress:`In Progress`
 .. |Review| replace:: :inreview:`Review`
 .. |Partial| replace:: :partial:`Partial`
 .. |Complete| replace:: :complete:`Complete`
 
+.. role:: chrono
+.. role:: format
+.. role:: ranges
+.. role:: spaceship
+
+.. |chrono| replace:: :chrono:`chrono`
+.. |format| replace:: :format:`format`
+.. |ranges| replace:: :ranges:`ranges`
+.. |spaceship| replace:: :spaceship:`spaceship`
+
 .. |sect| unicode:: U+00A7
 .. |hellip| unicode:: U+2026

libcxx/docs/Status/Cxx20Issues.csv

-"Issue #","Issue Name","Meeting","Status","First released version"
+"Issue #","Issue Name","Meeting","Status","First released version","Labels"
 "`2070 <https://wg21.link/LWG2070>`__","``allocate_shared``\  should use ``allocator_traits<A>::construct``\ ","Toronto","Resolved by `P0674R1 <https://wg21.link/P0674R1>`__",""
 "`2444 <https://wg21.link/LWG2444>`__","Inconsistent complexity for ``std::sort_heap``\ ","Toronto","",""
 "`2593 <https://wg21.link/LWG2593>`__","Moved-from state of Allocators","Toronto","",""
 "`2597 <https://wg21.link/LWG2597>`__","``std::log``\  misspecified for complex numbers","Toronto","",""
 "`2783 <https://wg21.link/LWG2783>`__","``stack::emplace()``\  and ``queue::emplace()``\  should return ``decltype(auto)``\ ","Toronto","|Complete|",""
 "`2932 <https://wg21.link/LWG2932>`__","Constraints on parallel algorithm implementations are underspecified","Toronto","",""
 "`2937 <https://wg21.link/LWG2937>`__","Is ``equivalent(""existing_thing"", ""not_existing_thing"")``\  an error","Toronto","|Complete|",""
 "`2940 <https://wg21.link/LWG2940>`__","``result_of``\  specification also needs a little cleanup","Toronto","",""

 "`3040 <https://wg21.link/LWG3040>`__","``basic_string_view::starts_with``\  *Effects* are incorrect","Kona","|Complete|",""
 "`3077 <https://wg21.link/LWG3077>`__","``(push|emplace)_back``\  should invalidate the ``end``\  iterator","Kona","|Nothing To Do|",""
 "`3087 <https://wg21.link/LWG3087>`__","One final ``&x``\  in |sect|\ [list.ops]","Kona","|Nothing To Do|",""
 "`3101 <https://wg21.link/LWG3101>`__","``span``\ 's ``Container``\  constructors need another constraint","Kona","|Complete|",""
 "`3112 <https://wg21.link/LWG3112>`__","``system_error``\  and ``filesystem_error``\  constructors taking a ``string``\  may not be able to meet their postconditions","Kona","",""
 "`3119 <https://wg21.link/LWG3119>`__","Program-definedness of closure types","Kona","|Nothing To Do|",""
 "`3133 <https://wg21.link/LWG3133>`__","Modernizing numeric type requirements","Kona","",""
 "`3144 <https://wg21.link/LWG3144>`__","``span``\  does not have a ````const_pointer````\  typedef","Kona","|Complete|",""
-"`3173 <https://wg21.link/LWG3173>`__","Enable CTAD for *``ref-view``*\ ","Kona","",""
-"`3179 <https://wg21.link/LWG3179>`__","``subrange``\  should always model ``Range``\ ","Kona","",""
-"`3180 <https://wg21.link/LWG3180>`__","Inconsistently named return type for ``ranges::minmax_element``\ ","Kona","",""
+"`3173 <https://wg21.link/LWG3173>`__","Enable CTAD for *``ref-view``*\ ","Kona","","","|ranges|"
+"`3179 <https://wg21.link/LWG3179>`__","``subrange``\  should always model ``Range``\ ","Kona","","","|ranges|"
+"`3180 <https://wg21.link/LWG3180>`__","Inconsistently named return type for ``ranges::minmax_element``\ ","Kona","","","|ranges|"
 "`3182 <https://wg21.link/LWG3182>`__","Specification of ``Same``\  could be clearer","Kona","",""
 "","","","",""
 "`2899 <https://wg21.link/LWG2899>`__","``is_(nothrow_)move_constructible``\  and ``tuple``\ , ``optional``\  and ``unique_ptr``\ ","Cologne","",""
 "`3055 <https://wg21.link/LWG3055>`__","``path::operator+=(*single-character*)``\  misspecified","Cologne","|Complete|","7.0"
 "`3158 <https://wg21.link/LWG3158>`__","``tuple(allocator_arg_t, const Alloc&)``\  should be conditionally explicit","Cologne","|Complete|","10.0"
-"`3169 <https://wg21.link/LWG3169>`__","``ranges``\  permutation generators discard useful information","Cologne","",""
-"`3183 <https://wg21.link/LWG3183>`__","Normative permission to specialize Ranges variable templates","Cologne","",""
+"`3169 <https://wg21.link/LWG3169>`__","``ranges``\  permutation generators discard useful information","Cologne","","","|ranges|"
+"`3183 <https://wg21.link/LWG3183>`__","Normative permission to specialize Ranges variable templates","Cologne","","","|ranges|"
 "`3184 <https://wg21.link/LWG3184>`__","Inconsistencies in ``bind_front``\  wording","Cologne","|Complete|","13.0"
 "`3185 <https://wg21.link/LWG3185>`__","Uses-allocator construction functions missing ``constexpr``\  and ``noexcept``\ ","Cologne","",""
-"`3186 <https://wg21.link/LWG3186>`__","``ranges``\  removal, partition, and ``partial_sort_copy``\  algorithms discard useful information","Cologne","",""
+"`3186 <https://wg21.link/LWG3186>`__","``ranges``\  removal, partition, and ``partial_sort_copy``\  algorithms discard useful information","Cologne","","","|ranges|"
 "`3187 <https://wg21.link/LWG3187>`__","`P0591R4 <https://wg21.link/p0591r4>`__ reverted DR 2586 fixes to ``scoped_allocator_adaptor::construct()``\ ","Cologne","",""
-"`3191 <https://wg21.link/LWG3191>`__","``std::ranges::shuffle``\  synopsis does not match algorithm definition","Cologne","",""
+"`3191 <https://wg21.link/LWG3191>`__","``std::ranges::shuffle``\  synopsis does not match algorithm definition","Cologne","","","|ranges|"
 "`3196 <https://wg21.link/LWG3196>`__","``std::optional<T>``\  is ill-formed is ``T``\  is an array","Cologne","|Complete|",""
 "`3198 <https://wg21.link/LWG3198>`__","Bad constraint on ``std::span::span()``\ ","Cologne","|Complete|",""
 "`3199 <https://wg21.link/LWG3199>`__","``istream >> bitset<0>``\  fails","Cologne","",""
 "`3202 <https://wg21.link/LWG3202>`__","P0318R1 was supposed to be revised","Cologne","|Complete|",""
 "`3206 <https://wg21.link/LWG3206>`__","``year_month_day``\  conversion to ``sys_days``\  uses not-existing member function","Cologne","|Complete|",""
 "`3208 <https://wg21.link/LWG3208>`__","``Boolean``\ 's expression requirements are ordered inconsistently","Cologne","|Nothing To Do|",""
 "`3209 <https://wg21.link/LWG3209>`__","Expression in ``year::ok()``\  returns clause is ill-formed","Cologne","|Complete|",""
 "","","","",""
 "`3231 <https://wg21.link/LWG3231>`__","``year_month_day_last::day``\  specification does not cover ``!ok()``\  values","Belfast","|Nothing To Do|",""
 "`3225 <https://wg21.link/LWG3225>`__","``zoned_time``\  converting constructor shall not be ``noexcept``\ ","Belfast","",""
 "`3190 <https://wg21.link/LWG3190>`__","``std::allocator::allocate``\  sometimes returns too little storage","Belfast","",""
-"`3218 <https://wg21.link/LWG3218>`__","Modifier for ``%d``\  parse flag does not match POSIX and ``format``\  specification","Belfast","",""
+"`3218 <https://wg21.link/LWG3218>`__","Modifier for ``%d``\  parse flag does not match POSIX and ``format``\  specification","Belfast","","","|format| |chrono|"
 "`3224 <https://wg21.link/LWG3224>`__","``zoned_time``\  constructor from ``TimeZonePtr``\  does not specify initialization of ``tp_``\ ","Belfast","",""
-"`3230 <https://wg21.link/LWG3230>`__","Format specifier ``%y/%Y``\  is missing locale alternative versions","Belfast","",""
+"`3230 <https://wg21.link/LWG3230>`__","Format specifier ``%y/%Y``\  is missing locale alternative versions","Belfast","","","|format| |chrono|"
 "`3232 <https://wg21.link/LWG3232>`__","Inconsistency in ``zoned_time``\  deduction guides","Belfast","",""
 "`3222 <https://wg21.link/LWG3222>`__","P0574R1 introduced preconditions on non-existent parameters","Belfast","",""
 "`3221 <https://wg21.link/LWG3221>`__","Result of ``year_month``\  arithmetic with ``months``\  is ambiguous","Belfast","|Complete|","8.0"
 "`3235 <https://wg21.link/LWG3235>`__","``parse``\  manipulator without abbreviation is not callable","Belfast","",""
-"`3246 <https://wg21.link/LWG3246>`__","What are the constraints on the template parameter of ``basic_format_arg``\ ?","Belfast","",""
+"`3246 <https://wg21.link/LWG3246>`__","What are the constraints on the template parameter of ``basic_format_arg``\ ?","Belfast","","","|format|"
 "`3253 <https://wg21.link/LWG3253>`__","``basic_syncbuf::basic_syncbuf()``\  should not be explicit","Belfast","",""
 "`3245 <https://wg21.link/LWG3245>`__","Unnecessary restriction on ``'%p'``\  parse specifier","Belfast","",""
 "`3244 <https://wg21.link/LWG3244>`__","Constraints for ``Source``\  in |sect|\ [fs.path.req] insufficiently constrainty","Belfast","",""
-"`3241 <https://wg21.link/LWG3241>`__","``chrono-spec``\  grammar ambiguity in |sect|\ [time.format]","Belfast","",""
+"`3241 <https://wg21.link/LWG3241>`__","``chrono-spec``\  grammar ambiguity in |sect|\ [time.format]","Belfast","","","|format| |chrono|"
 "`3257 <https://wg21.link/LWG3257>`__","Missing feature testing macro update from P0858","Belfast","",""
 "`3256 <https://wg21.link/LWG3256>`__","Feature testing macro for ``constexpr``\  algorithms","Belfast","|Complete|","13.0"
 "`3273 <https://wg21.link/LWG3273>`__","Specify ``weekday_indexed``\  to range of ``[0, 7]``\ ","Belfast","",""
 "`3070 <https://wg21.link/LWG3070>`__","``path::lexically_relative``\  causes surprising results if a filename can also be a  *root-name*","Belfast","",""
 "`3266 <https://wg21.link/LWG3266>`__","``to_chars(bool)``\  should be deleted","Belfast","",""
-"`3272 <https://wg21.link/LWG3272>`__","``%I%p``\  should parse/format ``duration``\  since midnight","Belfast","",""
+"`3272 <https://wg21.link/LWG3272>`__","``%I%p``\  should parse/format ``duration``\  since midnight","Belfast","","","|format| |chrono|"
 "`3259 <https://wg21.link/LWG3259>`__","The definition of *constexpr iterators* should be adjusted","Belfast","",""
 "`3103 <https://wg21.link/LWG3103>`__","Errors in taking subview of ``span``\  should be ill-formed where possible","Belfast","",""
 "`3274 <https://wg21.link/LWG3274>`__","Missing feature test macro for ``<span>``\ ","Belfast","",""
-"`3276 <https://wg21.link/LWG3276>`__","Class ``split_view::outer_iterator::value_type``\  should inherit from ``view_interface``\ ","Belfast","",""
+"`3276 <https://wg21.link/LWG3276>`__","Class ``split_view::outer_iterator::value_type``\  should inherit from ``view_interface``\ ","Belfast","","","|ranges|"
 "`3277 <https://wg21.link/LWG3277>`__","Pre-increment on prvalues is not a requirement of ``weakly_incrementable``\ ","Belfast","",""
 "`3149 <https://wg21.link/LWG3149>`__","``DefaultConstructible``\  should require default initialization","Belfast","|Complete|","13.0"
 "","","","",""
 "`1203 <https://wg21.link/LWG1203>`__","More useful rvalue stream insertion","Prague","|Complete|","12.0"
 "`2859 <https://wg21.link/LWG2859>`__","Definition of *reachable* in [ptr.launder] misses pointer arithmetic from pointer-interconvertible object","Prague","",""
 "`3018 <https://wg21.link/LWG3018>`__","``shared_ptr``\  of function type","Prague","",""
 "`3050 <https://wg21.link/LWG3050>`__","Conversion specification problem in ``chrono::duration``\  constructor","Prague","",""
 "`3141 <https://wg21.link/LWG3141>`__","``CopyConstructible``\  doesn't preserve source values","Prague","|Nothing to do|",""
 "`3150 <https://wg21.link/LWG3150>`__","``UniformRandomBitGenerator``\  should validate ``min``\  and ``max``\ ","Prague","|Complete|","13.0"
 "`3175 <https://wg21.link/LWG3175>`__","The ``CommonReference``\  requirement of concept ``SwappableWith``\  is not satisfied in the example","Prague","|Complete|","13.0"
 "`3194 <https://wg21.link/LWG3194>`__","``ConvertibleTo``\  prose does not match code","Prague","|Complete|","13.0"
 "`3200 <https://wg21.link/LWG3200>`__","``midpoint``\  should not constrain ``T``\  is complete","Prague","|Nothing To Do|",""
 "`3201 <https://wg21.link/LWG3201>`__","``lerp``\  should be marked as ``noexcept``\ ","Prague","|Complete|",""
 "`3226 <https://wg21.link/LWG3226>`__","``zoned_time``\  constructor from ``string_view``\  should accept ``zoned_time<Duration2, TimeZonePtr2>``\ ","Prague","",""
 "`3233 <https://wg21.link/LWG3233>`__","Broken requirements for ``shared_ptr``\  converting constructors","Prague","",""
 "`3237 <https://wg21.link/LWG3237>`__","LWG 3038 and 3190 have inconsistent PRs","Prague","",""
 "`3238 <https://wg21.link/LWG3238>`__","Insufficiently-defined behavior of ``std::function``\  deduction guides","Prague","",""
-"`3242 <https://wg21.link/LWG3242>`__","``std::format``\ : missing rules for ``arg-id``\  in ``width``\  and ``precision``\ ","Prague","|Complete|","Clang 14"
-"`3243 <https://wg21.link/LWG3243>`__","``std::format``\  and negative zeroes","Prague","",""
+"`3242 <https://wg21.link/LWG3242>`__","``std::format``\ : missing rules for ``arg-id``\  in ``width``\  and ``precision``\ ","Prague","|Complete|","Clang 14","|format|"
+"`3243 <https://wg21.link/LWG3243>`__","``std::format``\  and negative zeroes","Prague","","","|format|"
 "`3247 <https://wg21.link/LWG3247>`__","``ranges::iter_move``\  should perform ADL-only lookup of ``iter_move``\ ","Prague","",""
-"`3248 <https://wg21.link/LWG3248>`__","``std::format``\  ``#b``\ , ``#B``\ , ``#o``\ , ``#x``\ , and ``#X``\   presentation types misformat negative numbers","Prague","|Complete|","14.0"
-"`3250 <https://wg21.link/LWG3250>`__","``std::format``\ : ``#``\  (alternate form) for NaN and inf","Prague","",""
+"`3248 <https://wg21.link/LWG3248>`__","``std::format``\  ``#b``\ , ``#B``\ , ``#o``\ , ``#x``\ , and ``#X``\   presentation types misformat negative numbers","Prague","|Complete|","14.0","|format|"
+"`3250 <https://wg21.link/LWG3250>`__","``std::format``\ : ``#``\  (alternate form) for NaN and inf","Prague","","","|format|"
 "`3251 <https://wg21.link/LWG3251>`__","Are ``std::format``\  alignment specifiers applied to string arguments?","Prague","",""
 "`3252 <https://wg21.link/LWG3252>`__","Parse locale's aware modifiers for commands are not consistent with POSIX spec","Prague","",""
 "`3254 <https://wg21.link/LWG3254>`__","Strike ``stop_token``\ 's ``operator!=``\ ","Prague","",""
 "`3255 <https://wg21.link/LWG3255>`__","``span``\ 's ``array``\  constructor is too strict","Prague","|Complete|",""
 "`3260 <https://wg21.link/LWG3260>`__","``year_month*``\  arithmetic rejects durations convertible to years","Prague","",""
-"`3262 <https://wg21.link/LWG3262>`__","Formatting of negative durations is not specified","Prague","",""
+"`3262 <https://wg21.link/LWG3262>`__","Formatting of negative durations is not specified","Prague","","","|format| |chrono|"
 "`3264 <https://wg21.link/LWG3264>`__","``sized_range``\  and ``ranges::size``\  redundantly use ``disable_sized_range``\ ","Prague","",""
 "`3269 <https://wg21.link/LWG3269>`__","Parse manipulators do not specify the result of the extraction from stream","Prague","",""
-"`3270 <https://wg21.link/LWG3270>`__","Parsing and formatting ``%j``\  with ``duration``\ s","Prague","",""
-"`3280 <https://wg21.link/LWG3280>`__","View converting constructors can cause constraint recursion and are unneeded","Prague","",""
-"`3281 <https://wg21.link/LWG3281>`__","Conversion from ``*pair-like*``\  types to ``subrange``\  is a silent semantic promotion","Prague","",""
-"`3282 <https://wg21.link/LWG3282>`__","``subrange``\  converting constructor should disallow derived to base conversions","Prague","",""
+"`3270 <https://wg21.link/LWG3270>`__","Parsing and formatting ``%j``\  with ``duration``\ s","Prague","","","|format| |chrono|"
+"`3280 <https://wg21.link/LWG3280>`__","View converting constructors can cause constraint recursion and are unneeded","Prague","","","|ranges|"
+"`3281 <https://wg21.link/LWG3281>`__","Conversion from ``*pair-like*``\  types to ``subrange``\  is a silent semantic promotion","Prague","","","|ranges|"
+"`3282 <https://wg21.link/LWG3282>`__","``subrange``\  converting constructor should disallow derived to base conversions","Prague","","","|ranges|"
 "`3284 <https://wg21.link/LWG3284>`__","``random_access_iterator``\  semantic constraints accidentally promote difference type  using unary negate","Prague","",""
 "`3285 <https://wg21.link/LWG3285>`__","The type of a customization point object shall satisfy ``semiregular``\ ","Prague","",""
-"`3286 <https://wg21.link/LWG3286>`__","``ranges::size``\  is not required to be valid after a call to ``ranges::begin``\  on an input range","Prague","",""
-"`3291 <https://wg21.link/LWG3291>`__","``iota_view::iterator``\  has the wrong ``iterator_category``\ ","Prague","",""
-"`3292 <https://wg21.link/LWG3292>`__","``iota_view``\  is under-constrained","Prague","",""
+"`3286 <https://wg21.link/LWG3286>`__","``ranges::size``\  is not required to be valid after a call to ``ranges::begin``\  on an input range","Prague","","","|ranges|"
+"`3291 <https://wg21.link/LWG3291>`__","``iota_view::iterator``\  has the wrong ``iterator_category``\ ","Prague","","","|ranges|"
+"`3292 <https://wg21.link/LWG3292>`__","``iota_view``\  is under-constrained","Prague","","","|ranges|"
 "`3294 <https://wg21.link/LWG3294>`__","``zoned_time``\  deduction guides misinterprets ``string``\ /``char*``\ ","Prague","",""
 "`3296 <https://wg21.link/LWG3296>`__","Inconsistent default argument for ``basic_regex<>::assign``\ ","Prague","|Complete|",""
-"`3299 <https://wg21.link/LWG3299>`__","Pointers don't need customized iterator behavior","Prague","",""
+"`3299 <https://wg21.link/LWG3299>`__","Pointers don't need customized iterator behavior","Prague","","","|ranges|"
 "`3300 <https://wg21.link/LWG3300>`__","Non-array ``ssize``\  overload is underconstrained","Prague","",""
-"`3301 <https://wg21.link/LWG3301>`__","``transform_view::iterator``\  has incorrect ``iterator_category``\ ","Prague","",""
-"`3302 <https://wg21.link/LWG3302>`__","Range adaptor objects ``keys``\  and ``values``\  are unspecified","Prague","",""
+"`3301 <https://wg21.link/LWG3301>`__","``transform_view::iterator``\  has incorrect ``iterator_category``\ ","Prague","","","|ranges|"
+"`3302 <https://wg21.link/LWG3302>`__","Range adaptor objects ``keys``\  and ``values``\  are unspecified","Prague","","","|ranges|"
 "`3303 <https://wg21.link/LWG3303>`__","Bad ""``constexpr``\ "" marker for ``destroy/destroy_n``\ ","Prague","",""
 "`3304 <https://wg21.link/LWG3304>`__","Allocate functions of ``std::polymorphic_allocator``\  should require ``[[nodiscard]]``\ ","Prague","",""
 "`3307 <https://wg21.link/LWG3307>`__","``std::allocator<void>().allocate(n)``\ ","Prague","",""
 "`3310 <https://wg21.link/LWG3310>`__","Replace ``SIZE_MAX``\  with ``numeric_limits<size_t>::max()``\ ","Prague","",""
-"`3313 <https://wg21.link/LWG3313>`__","``join_view::iterator::operator--``\  is incorrectly constrained","Prague","",""
+"`3313 <https://wg21.link/LWG3313>`__","``join_view::iterator::operator--``\  is incorrectly constrained","Prague","","","|ranges|"
 "`3314 <https://wg21.link/LWG3314>`__","Is stream insertion behavior locale dependent when ``Period::type``\  is ``micro``\ ?","Prague","",""
 "`3315 <https://wg21.link/LWG3315>`__","Correct Allocator Default Behavior","Prague","",""
 "`3316 <https://wg21.link/LWG3316>`__","Correctly define epoch for ``utc_clock``\  / ``utc_timepoint``\ ","Prague","",""
 "`3317 <https://wg21.link/LWG3317>`__","Incorrect ``operator<<``\  for floating-point durations","Prague","",""
 "`3318 <https://wg21.link/LWG3318>`__","Clarify whether clocks can represent time before their epoch","Prague","",""
 "`3319 <https://wg21.link/LWG3319>`__","Properly reference specification of IANA time zone database","Prague","",""
 "`3320 <https://wg21.link/LWG3320>`__","``span::cbegin/cend``\  methods produce different results than ``std::[ranges::]cbegin/cend``\ ","Prague","|Complete|",""
 "`3321 <https://wg21.link/LWG3321>`__","``uninitialized_construct_using_allocator``\  should use ``construct_at``\ ","Prague","",""
-"`3323 <https://wg21.link/LWG3323>`__","``*has-tuple-element*``\  helper concept needs ``convertible_to``\ ","Prague","",""
+"`3323 <https://wg21.link/LWG3323>`__","``*has-tuple-element*``\  helper concept needs ``convertible_to``\ ","Prague","","","|ranges|"
 "`3324 <https://wg21.link/LWG3324>`__","Special-case ``std::strong/weak/partial_order``\  for pointers","Prague","",""
-"`3325 <https://wg21.link/LWG3325>`__","Constrain return type of transformation function for ``transform_view``\ ","Prague","",""
+"`3325 <https://wg21.link/LWG3325>`__","Constrain return type of transformation function for ``transform_view``\ ","Prague","","","|ranges|"
 "`3326 <https://wg21.link/LWG3326>`__","``enable_view``\  has false positives","Prague","|In progress|",""
-"`3327 <https://wg21.link/LWG3327>`__","Format alignment specifiers vs. text direction","Prague","|Nothing To Do|",""
+"`3327 <https://wg21.link/LWG3327>`__","Format alignment specifiers vs. text direction","Prague","|Nothing To Do|","","|format|"
 "`3328 <https://wg21.link/LWG3328>`__","Clarify that ``std::string``\  is not good for UTF-8","Prague","",""
 "`3329 <https://wg21.link/LWG3329>`__","``totally_ordered_with``\  both directly and indirectly requires ``common_reference_with``\ ","Prague","|Complete|","13.0"
 "`3330 <https://wg21.link/LWG3330>`__","Include ``<compare>``\  from most library headers","Prague","",""
 "`3331 <https://wg21.link/LWG3331>`__","Define ``totally_ordered/_with``\  in terms of ``*partially-ordered-with*``\ ","Prague","|Complete|","13.0"
-"`3332 <https://wg21.link/LWG3332>`__","Issue in |sect|\ [time.format]","Prague","",""
+"`3332 <https://wg21.link/LWG3332>`__","Issue in |sect|\ [time.format]","Prague","","","|format| |chrono|"
 "`3334 <https://wg21.link/LWG3334>`__","``basic_osyncstream``\  move assignment and destruction calls ``basic_syncbuf::emit()``\  twice","Prague","",""
-"`3335 <https://wg21.link/LWG3335>`__","Resolve C++20 NB comments US 273 and GB 274","Prague","",""
+"`3335 <https://wg21.link/LWG3335>`__","Resolve C++20 NB comments US 273 and GB 274","Prague","","","|ranges|"
 "`3338 <https://wg21.link/LWG3338>`__","Rename ``default_constructible``\  to ``default_initializable``\ ","Prague","|Complete|","13.0"
-"`3340 <https://wg21.link/LWG3340>`__","Formatting functions should throw on argument/format string mismatch in |sect|\ [format.functions]","Prague","",""
+"`3340 <https://wg21.link/LWG3340>`__","Formatting functions should throw on argument/format string mismatch in |sect|\ [format.functions]","Prague","","","|format|"
 "`3346 <https://wg21.link/LWG3346>`__","``pair``\  and ``tuple``\  copy and move constructor have backwards specification","Prague","",""
 "`3347 <https://wg21.link/LWG3347>`__","``std::pair<T, U>``\  now requires ``T``\  and ``U``\  to be less-than-comparable","Prague","",""
 "`3348 <https://wg21.link/LWG3348>`__","``__cpp_lib_unwrap_ref``\  in wrong header","Prague","|Complete|","12.0"
 "`3349 <https://wg21.link/LWG3349>`__","Missing ``__cpp_lib_constexpr_complex``\  for P0415R1","Prague","",""
 "`3350 <https://wg21.link/LWG3350>`__","Simplify return type of ``lexicographical_compare_three_way``\ ","Prague","",""
 "`3351 <https://wg21.link/LWG3351>`__","``ranges::enable_safe_range``\  should not be constrained","Prague","",""
 "`3352 <https://wg21.link/LWG3352>`__","``strong_equality``\  isn't a thing","Prague","",""
 "`3354 <https://wg21.link/LWG3354>`__","``has_strong_structural_equality``\  has a meaningless definition","Prague","",""
-"`3355 <https://wg21.link/LWG3355>`__","The memory algorithms should support move-only input iterators introduced by P1207","Prague","",""
+"`3355 <https://wg21.link/LWG3355>`__","The memory algorithms should support move-only input iterators introduced by P1207","Prague","","","|ranges|"
 "`3356 <https://wg21.link/LWG3356>`__","``__cpp_lib_nothrow_convertible``\  should be ``__cpp_lib_is_nothrow_convertible``\ ","Prague","|Complete|","12.0"
 "`3358 <https://wg21.link/LWG3358>`__","|sect|\ [span.cons] is mistaken that ``to_address``\  can throw","Prague","",""
 "`3359 <https://wg21.link/LWG3359>`__","``<chrono>``\  leap second support should allow for negative leap seconds","Prague","",""
 "`3360 <https://wg21.link/LWG3360>`__","``three_way_comparable_with``\  is inconsistent with similar concepts","Prague","",""
 "`3362 <https://wg21.link/LWG3362>`__","Strike ``stop_source``\ 's ``operator!=``\ ","Prague","",""
-"`3363 <https://wg21.link/LWG3363>`__","``drop_while_view``\  should opt-out of ``sized_range``\ ","Prague","",""
-"`3364 <https://wg21.link/LWG3364>`__","Initialize data members of ranges and their iterators","Prague","",""
+"`3363 <https://wg21.link/LWG3363>`__","``drop_while_view``\  should opt-out of ``sized_range``\ ","Prague","","","|ranges|"
+"`3364 <https://wg21.link/LWG3364>`__","Initialize data members of ranges and their iterators","Prague","","","|ranges|"
 "`3367 <https://wg21.link/LWG3367>`__","Integer-class conversions should not throw","Prague","",""
 "`3369 <https://wg21.link/LWG3369>`__","``span``\ 's deduction-guide for built-in arrays doesn't work","Prague","",""
-"`3371 <https://wg21.link/LWG3371>`__","``visit_format_arg``\  and ``make_format_args``\  are not hidden friends","Prague","|Complete|","14.0"
-"`3372 <https://wg21.link/LWG3372>`__","``vformat_to``\  should not try to deduce ``Out``\  twice","Prague","",""
-"`3373 <https://wg21.link/LWG3373>`__","``{to,from}_chars_result``\  and ``format_to_n_result``\  need the  ""we really mean what we say"" wording","Prague","",""
+"`3371 <https://wg21.link/LWG3371>`__","``visit_format_arg``\  and ``make_format_args``\  are not hidden friends","Prague","|Complete|","14.0","|format|"
+"`3372 <https://wg21.link/LWG3372>`__","``vformat_to``\  should not try to deduce ``Out``\  twice","Prague","","","|format|"
+"`3373 <https://wg21.link/LWG3373>`__","``{to,from}_chars_result``\  and ``format_to_n_result``\  need the  ""we really mean what we say"" wording","Prague","","","|format|"
 "`3374 <https://wg21.link/LWG3374>`__","P0653 + P1006 should have made the other ``std::to_address``\  overload ``constexpr``\ ","Prague","|Complete|","12.0"
 "`3375 <https://wg21.link/LWG3375>`__","``decay``\  in ``viewable_range``\  should be ``remove_cvref``\ ","Prague","",""
 "`3377 <https://wg21.link/LWG3377>`__","``elements_view::iterator``\  befriends a specialization of itself","Prague","",""
 "`3379 <https://wg21.link/LWG3379>`__","""``safe``\ "" in several library names is misleading","Prague","|In Progress|",""
 "`3380 <https://wg21.link/LWG3380>`__","``common_type``\  and comparison categories","Prague","",""
-"`3381 <https://wg21.link/LWG3381>`__","``begin``\  and ``data``\  must agree for ``contiguous_range``\ ","Prague","",""
+"`3381 <https://wg21.link/LWG3381>`__","``begin``\  and ``data``\  must agree for ``contiguous_range``\ ","Prague","","","|ranges|"
 "`3382 <https://wg21.link/LWG3382>`__","NTTP for ``pair``\  and ``array``\ ","Prague","",""
 "`3383 <https://wg21.link/LWG3383>`__","|sect|\ [time.zone.leap.nonmembers] ``sys_seconds``\  should be replaced with ``seconds``\ ","Prague","",""
-"`3384 <https://wg21.link/LWG3384>`__","``transform_view::*sentinel*``\  has an incorrect ``operator-``\ ","Prague","",""
-"`3385 <https://wg21.link/LWG3385>`__","``common_iterator``\  is not sufficiently constrained for non-copyable iterators","Prague","",""
-"`3387 <https://wg21.link/LWG3387>`__","|sect|\ [range.reverse.view] ``reverse_view<V>``\  unintentionally requires ``range<const V>``\ ","Prague","",""
-"`3388 <https://wg21.link/LWG3388>`__","``view``\  iterator types have ill-formed ``<=>``\  operators","Prague","",""
-"`3389 <https://wg21.link/LWG3389>`__","A move-only iterator still does not have a ``counted_iterator``\ ","Prague","",""
+"`3384 <https://wg21.link/LWG3384>`__","``transform_view::*sentinel*``\  has an incorrect ``operator-``\ ","Prague","","","|ranges|"
+"`3385 <https://wg21.link/LWG3385>`__","``common_iterator``\  is not sufficiently constrained for non-copyable iterators","Prague","","","|ranges|"
+"`3387 <https://wg21.link/LWG3387>`__","|sect|\ [range.reverse.view] ``reverse_view<V>``\  unintentionally requires ``range<const V>``\ ","Prague","","","|ranges|"
+"`3388 <https://wg21.link/LWG3388>`__","``view``\  iterator types have ill-formed ``<=>``\  operators","Prague","","","|ranges|"
+"`3389 <https://wg21.link/LWG3389>`__","A move-only iterator still does not have a ``counted_iterator``\ ","Prague","","","|ranges|"
 "`3390 <https://wg21.link/LWG3390>`__","``make_move_iterator()``\  cannot be used to construct a ``move_iterator``\  for a move-only iterator","Prague","",""
 "`3393 <https://wg21.link/LWG3393>`__","Missing/incorrect feature test macro for coroutines","Prague","",""
 "`3395 <https://wg21.link/LWG3395>`__","Definition for three-way comparison needs to be updated (US 152)","Prague","",""
 "`3396 <https://wg21.link/LWG3396>`__","Clarify point of reference for ``source_location::current()``\  (DE 169)","Prague","",""
-"`3397 <https://wg21.link/LWG3397>`__","``ranges::basic_istream_view::iterator``\  should not provide ``iterator_category``\ ","Prague","",""
-"`3398 <https://wg21.link/LWG3398>`__","``tuple_element_t``\  is also wrong for ``const subrange``\ ","Prague","",""
+"`3397 <https://wg21.link/LWG3397>`__","``ranges::basic_istream_view::iterator``\  should not provide ``iterator_category``\ ","Prague","","","|ranges|"
+"`3398 <https://wg21.link/LWG3398>`__","``tuple_element_t``\  is also wrong for ``const subrange``\ ","Prague","","","|ranges|"
 "`3446 <https://wg21.link/LWG3446>`__","``indirectly_readable_traits``\ ambiguity for types with both ``value_type``\ and ``element_type``\ ","November virtual meeting","|Complete|","13.0"

libcxx/docs/Status/Cxx2bIssues.csv

-"Issue #","Issue Name","Meeting","Status","First released version"
+"Issue #","Issue Name","Meeting","Status","First released version","Labels"
 "`2839 <https://wg21.link/LWG2839>`__","Self-move-assignment of library types, again","November 2020","",""
 "`3117 <https://wg21.link/LWG3117>`__","Missing ``packaged_task`` deduction guides","November 2020","",""
 "`3143 <https://wg21.link/LWG3143>`__","``monotonic_buffer_resource`` growth policy is unclear","November 2020","",""
 "`3195 <https://wg21.link/LWG3195>`__","What is the stored pointer value of an empty weak_ptr?","November 2020","",""
 "`3211 <https://wg21.link/LWG3211>`__","``std::tuple<>`` should be trivially constructible","November 2020","",""
 "`3236 <https://wg21.link/LWG3236>`__","Random access iterator requirements lack limiting relational operators domain to comparing those from the same range","November 2020","",""
 "`3265 <https://wg21.link/LWG3265>`__","``move_iterator``'s conversions are more broken after P1207","November 2020","Fixed by `LWG3435 <https://wg21.link/LWG3435>`__",""
 "`3435 <https://wg21.link/LWG3435>`__","``three_way_comparable_with<reverse_iterator<int*>, reverse_iterator<const int*>>``","November 2020","|Complete|","13.0"

 "`3449 <https://wg21.link/LWG3449>`__","take_view and take_while_view's ``sentinel<false>`` not comparable with their const iterator","November 2020","",""
 "`3453 <https://wg21.link/LWG3453>`__","Generic code cannot call ``ranges::advance(i, s)``","November 2020","",""
 "`3455 <https://wg21.link/LWG3455>`__","Incorrect Postconditions on ``unique_ptr`` move assignment","November 2020","|Nothing To Do|",""
 "`3460 <https://wg21.link/LWG3460>`__","Unimplementable ``noop_coroutine_handle`` guarantees","November 2020","",""
 "`3461 <https://wg21.link/LWG3461>`__","``convertible_to``'s description mishandles cv-qualified void","November 2020","",""
 "`3465 <https://wg21.link/LWG3465>`__","compare_partial_order_fallback requires ``F < E``","November 2020","",""
 "`3466 <https://wg21.link/LWG3466>`__","Specify the requirements for ``promise``/``future``/``shared_future`` consistently","November 2020","",""
 "`3467 <https://wg21.link/LWG3467>`__","``bool`` can't be an integer-like type","November 2020","",""
 "`3472 <https://wg21.link/LWG3472>`__","``counted_iterator`` is missing preconditions","November 2020","",""
 "`3473 <https://wg21.link/LWG3473>`__","Normative encouragement in non-normative note","November 2020","",""
-"`3474 <https://wg21.link/LWG3474>`__","Nesting ``join_views`` is broken because of CTAD","November 2020","",""
+"`3474 <https://wg21.link/LWG3474>`__","Nesting ``join_views`` is broken because of CTAD","November 2020","","","|ranges|"
 "`3476 <https://wg21.link/LWG3476>`__","``thread`` and ``jthread`` constructors require that the parameters be move-constructible but never move construct the parameters","November 2020","",""
 "`3477 <https://wg21.link/LWG3477>`__","Simplify constraints for semiregular-box","November 2020","",""
 "`3482 <https://wg21.link/LWG3482>`__","``drop_view``'s const begin should additionally require sized_range","November 2020","",""
 "`3483 <https://wg21.link/LWG3483>`__","``transform_view::iterator``'s difference is overconstrained","November 2020","",""
 "","","","",""
 "`3391 <https://wg21.link/LWG3391>`__","Problems with ``counted_iterator``/``move_iterator::base() const &``","February 2021","",""
 "`3433 <https://wg21.link/LWG3433>`__","``subrange::advance(n)`` has UB when ``n < 0``","February 2021","",""
 "`3490 <https://wg21.link/LWG3490>`__","``ranges::drop_while_view::begin()`` is missing a precondition","February 2021","",""
 "`3492 <https://wg21.link/LWG3492>`__","Minimal improvements to ``elements_view::iterator``","February 2021","",""
 "`3494 <https://wg21.link/LWG3494>`__","Allow ranges to be conditionally borrowed","February 2021","Superseded by `P2017R1 <https://wg21.link/P2017R1>`__",""
 "`3495 <https://wg21.link/LWG3495>`__","``constexpr launder`` makes pointers to inactive members of unions usable","February 2021","",""
-"`3500 <https://wg21.link/LWG3500>`__","``join_view::iterator::operator->()`` is bogus","February 2021","",""
+"`3500 <https://wg21.link/LWG3500>`__","``join_view::iterator::operator->()`` is bogus","February 2021","","","|ranges|"
 "`3502 <https://wg21.link/LWG3502>`__","``elements_view`` should not be allowed to return dangling reference","February 2021","",""
-"`3505 <https://wg21.link/LWG3505>`__","``split_view::outer-iterator::operator++`` misspecified","February 2021","",""
+"`3505 <https://wg21.link/LWG3505>`__","``split_view::outer-iterator::operator++`` misspecified","February 2021","","","|ranges|"
 "","","","",""
 `2774 <https://wg21.link/LWG2774>`__,"``std::function`` construction vs assignment","June 2021","",""
 `2818 <https://wg21.link/LWG2818>`__,"``::std::`` everywhere rule needs tweaking","June 2021","",""
 `2997 <https://wg21.link/LWG2997>`__,"LWG 491 and the specification of ``{forward_,}list::unique``","June 2021","",""
 `3410 <https://wg21.link/LWG3410>`__,"``lexicographical_compare_three_way`` is overspecified","June 2021","",""
 `3430 <https://wg21.link/LWG3430>`__,"``std::fstream`` & co. should be constructible from string_view","June 2021","",""
-`3462 <https://wg21.link/LWG3462>`__,"§[formatter.requirements]: Formatter requirements forbid use of ``fc.arg()``","June 2021","",""
-`3481 <https://wg21.link/LWG3481>`__,"``viewable_range`` mishandles lvalue move-only views","June 2021","",""
+`3462 <https://wg21.link/LWG3462>`__,"§[formatter.requirements]: Formatter requirements forbid use of ``fc.arg()``","June 2021","","","|format|"
+`3481 <https://wg21.link/LWG3481>`__,"``viewable_range`` mishandles lvalue move-only views","June 2021","","","|ranges|"
 `3506 <https://wg21.link/LWG3506>`__,"Missing allocator-extended constructors for ``priority_queue``","June 2021","|Complete|","14.0"
-`3517 <https://wg21.link/LWG3517>`__,"``join_view::iterator``'s ``iter_swap`` is underconstrained","June 2021","",""
+`3517 <https://wg21.link/LWG3517>`__,"``join_view::iterator``'s ``iter_swap`` is underconstrained","June 2021","","","|ranges|"
 `3518 <https://wg21.link/LWG3518>`__,"Exception requirements on char trait operations unclear","June 2021","",""
 `3519 <https://wg21.link/LWG3519>`__,"Incomplete synopses for <random> classes","June 2021","",""
-`3520 <https://wg21.link/LWG3520>`__,"``iter_move`` and ``iter_swap`` are inconsistent for ``transform_view::iterator``","June 2021","",""
+`3520 <https://wg21.link/LWG3520>`__,"``iter_move`` and ``iter_swap`` are inconsistent for ``transform_view::iterator``","June 2021","","","|ranges|"
 `3521 <https://wg21.link/LWG3521>`__,"Overly strict requirements on ``qsort`` and ``bsearch``","June 2021","",""
-`3522 <https://wg21.link/LWG3522>`__,"Missing requirement on ``InputIterator`` template parameter for ``priority_queue`` constructors","June 2021","|Complete|","14.0"
-`3523 <https://wg21.link/LWG3523>`__,"``iota_view::sentinel`` is not always ``iota_view``'s sentinel","June 2021","",""
+`3522 <https://wg21.link/LWG3522>`__,"Missing requirement on ``InputIterator`` template parameter for ``priority_queue`` constructors","June 2021","|Complete|","14.0","|ranges|"
+`3523 <https://wg21.link/LWG3523>`__,"``iota_view::sentinel`` is not always ``iota_view``'s sentinel","June 2021","","","|ranges|"
 `3526 <https://wg21.link/LWG3526>`__,"Return types of ``uses_allocator_construction_args`` unspecified","June 2021","",""
 `3527 <https://wg21.link/LWG3527>`__,"``uses_allocator_construction_args`` handles rvalue pairs of rvalue references incorrectly","June 2021","",""
 `3528 <https://wg21.link/LWG3528>`__,"``make_from_tuple`` can perform (the equivalent of) a C-style cast","June 2021","",""
 `3529 <https://wg21.link/LWG3529>`__,"``priority_queue(first, last)`` should construct ``c`` with ``(first, last)``","June 2021","",""
 `3530 <https://wg21.link/LWG3530>`__,"``BUILTIN-PTR-MEOW`` should not opt the type out of syntactic checks","June 2021","",""
-`3532 <https://wg21.link/LWG3532>`__,"``split_view<V, P>::inner-iterator<true>::operator++(int)`` should depend on ``Base``","June 2021","",""
-`3533 <https://wg21.link/LWG3533>`__,"Make ``base() const &`` consistent across iterator wrappers that supports ``input_iterators``","June 2021","",""
+`3532 <https://wg21.link/LWG3532>`__,"``split_view<V, P>::inner-iterator<true>::operator++(int)`` should depend on ``Base``","June 2021","","","|ranges|"
+`3533 <https://wg21.link/LWG3533>`__,"Make ``base() const &`` consistent across iterator wrappers that supports ``input_iterators``","June 2021","","","|ranges|"
 `3536 <https://wg21.link/LWG3536>`__,"Should ``chrono::from_stream()`` assign zero to duration for failure?","June 2021","",""
-`3539 <https://wg21.link/LWG3539>`__,"``format_to`` must not copy models of ``output_iterator<const charT&>``","June 2021","",""
-`3540 <https://wg21.link/LWG3540>`__,"§[format.arg] There should be no const in ``basic_format_arg(const T* p)``","June 2021","",""
-`3541 <https://wg21.link/LWG3541>`__,"``indirectly_readable_traits`` should be SFINAE-friendly for all types","June 2021","",""
-`3542 <https://wg21.link/LWG3542>`__,"``basic_format_arg`` mishandles ``basic_string_view`` with custom traits","June 2021","",""
-`3543 <https://wg21.link/LWG3543>`__,"Definition of when ``counted_iterators`` refer to the same sequence isn't quite right","June 2021","",""
-`3544 <https://wg21.link/LWG3544>`__,"``format-arg-store::args`` is unintentionally not exposition-only","June 2021","",""
-`3546 <https://wg21.link/LWG3546>`__,"``common_iterator``'s postfix-proxy is not quite right","June 2021","",""
+`3539 <https://wg21.link/LWG3539>`__,"``format_to`` must not copy models of ``output_iterator<const charT&>``","June 2021","","","|format|"
+`3540 <https://wg21.link/LWG3540>`__,"§[format.arg] There should be no const in ``basic_format_arg(const T* p)``","June 2021","","","|format|"
+`3541 <https://wg21.link/LWG3541>`__,"``indirectly_readable_traits`` should be SFINAE-friendly for all types","June 2021","","","|ranges|"
+`3542 <https://wg21.link/LWG3542>`__,"``basic_format_arg`` mishandles ``basic_string_view`` with custom traits","June 2021","","","|format|"
+`3543 <https://wg21.link/LWG3543>`__,"Definition of when ``counted_iterators`` refer to the same sequence isn't quite right","June 2021","","","|ranges|"
+`3544 <https://wg21.link/LWG3544>`__,"``format-arg-store::args`` is unintentionally not exposition-only","June 2021","","","|format|"
+`3546 <https://wg21.link/LWG3546>`__,"``common_iterator``'s postfix-proxy is not quite right","June 2021","","","|ranges|"
 `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","",""
+`3549 <https://wg21.link/LWG3549>`__,"``view_interface`` is overspecified to derive from ``view_base``","June 2021","","","|ranges|"
+`3551 <https://wg21.link/LWG3551>`__,"``borrowed_{iterator,subrange}_t`` are overspecified","June 2021","","","|ranges|"
 `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","",""
+`3553 <https://wg21.link/LWG3553>`__,"Useless constraint in ``split_view::outer-iterator::value_type::begin()``","June 2021","","","|ranges|"
+`3555 <https://wg21.link/LWG3555>`__,"``{transform,elements}_view::iterator::iterator_concept`` should consider const-qualification of the underlying range","June 2021","","","|ranges|"
 "","","","",""
 `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","",""
+`3361 <https://wg21.link/LWG3361>`__,"``safe_range<SomeRange&>`` case","October 2021","","","|ranges|"
+`3392 <https://wg21.link/LWG3392>`__,"``ranges::distance()`` cannot be used on a move-only iterator with a sized sentinel","October 2021","","","|ranges|"
+`3407 <https://wg21.link/LWG3407>`__,"Some problems with the wording changes of P1739R4","October 2021","","","|ranges|"
 `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","",""
+`3470 <https://wg21.link/LWG3470>`__,"``convertible-to-non-slicing`` seems to reject valid case","October 2021","","","|ranges|"
+`3480 <https://wg21.link/LWG3480>`__,"``directory_iterator`` and ``recursive_directory_iterator`` are not C++20 ranges","October 2021","","","|ranges|"
 `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","",""
+`3535 <https://wg21.link/LWG3535>`__,"``join_view::iterator::iterator_category`` and ``::iterator_concept`` lie","October 2021","","","|ranges|"
 `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","",""
+`3559 <https://wg21.link/LWG3559>`__,"Semantic requirements of ``sized_range`` is circular","October 2021","","","|ranges|"
+`3560 <https://wg21.link/LWG3560>`__,"``ranges::equal`` and ``ranges::is_permutation`` should short-circuit for ``sized_ranges``","October 2021","","","|ranges|"
 `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","",""
+`3563 <https://wg21.link/LWG3563>`__,"``keys_view`` example is broken","October 2021","","","|ranges|"
 `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","",""
+`3567 <https://wg21.link/LWG3567>`__,"Formatting move-only iterators take two","October 2021","","","|format|"
+`3568 <https://wg21.link/LWG3568>`__,"``basic_istream_view`` needs to initialize ``value_``","October 2021","","","|ranges|"
 `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","",""
+`3572 <https://wg21.link/LWG3572>`__,"``copyable-box`` should be fully ``constexpr``","October 2021","","","|ranges|"
 `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","",""
+`3580 <https://wg21.link/LWG3580>`__,"``iota_view``'s ``iterator``'s binary ``operator+`` should be improved","October 2021","","","|ranges|"
+`3581 <https://wg21.link/LWG3581>`__,"The range constructor makes ``basic_string_view`` not trivially move constructible","October 2021","","","|ranges|"
 `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","",""
+`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","","","|ranges|"
+`3590 <https://wg21.link/LWG3590>`__,"``split_view::base() const &`` is overconstrained","October 2021","","","|ranges|"
+`3591 <https://wg21.link/LWG3591>`__,"``lazy_split_view<input_view>::inner-iterator::base() &&`` invalidates outer iterators","October 2021","","","|ranges|"
+`3592 <https://wg21.link/LWG3592>`__,"``lazy_split_view`` needs to check the simpleness of Pattern","October 2021","","","|ranges|"
+`3593 <https://wg21.link/LWG3593>`__,"Several iterators' ``base() const &`` and ``lazy_split_view::outer-iterator::value_type::end()`` missing ``noexcept``","October 2021","","","|ranges|"
 `3595 <https://wg21.link/LWG3595>`__,"Exposition-only classes proxy and postfix-proxy for ``common_iterator`` should be fully ``constexpr``","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

 "Number","Name","Status","First released version"
 `P0896R4 <https://wg21.link/P0896R4>`__,<ranges>,,
 `P1035R7 <https://wg21.link/P1035R7>`__,Input Range Adaptors,,
 `P1207R4 <https://wg21.link/P1207R4>`__,Movability Of Single-Pass Iterators,,
 `P1243R4 <https://wg21.link/P1243R4>`__,Rangify New Algorithms,,
 `P1248R1 <https://wg21.link/P1248R1>`__,Fixing Relations,,
 `P1252R2 <https://wg21.link/P1252R2>`__,Ranges Design Cleanup,,
 `P1391R4 <https://wg21.link/P1391R4>`__,Range Constructor For string_view,,
 `P1456R1 <https://wg21.link/P1456R1>`__,Move-Only Views,,
 `P1474R1 <https://wg21.link/P1474R1>`__,Helpful Pointers For contiguous_iterator,,
 `P1522R1 <https://wg21.link/P1522R1>`__,Iterator Difference Type And Integer Overflow,,
 `P1523R1 <https://wg21.link/P1523R1>`__,Views And Size Types,,
 `P1638R1 <https://wg21.link/P1638R1>`__,basic_istream_view::iterator Should Not Be Copyable,,
 `P1716R3 <https://wg21.link/P1716R3>`__,Range Comparison Algorithms Are Over-Constrained,,
 `P1739R4 <https://wg21.link/P1739R4>`__,Avoiding Template Bloat For Ranges,,
 `P1862R1 <https://wg21.link/P1862R1>`__,Range Adaptors For Non-Copyable Iterators,,
 `P1870R1 <https://wg21.link/P1870R1>`__,safe_range,,
 `P1871R1 <https://wg21.link/P1871R1>`__,disable_sized_sentinel_for,,
 `P1878R1 <https://wg21.link/P1878R1>`__,Constraining Readable Types,,
 `P1970R2 <https://wg21.link/P1970R2>`__,ranges::ssize,,
 `P1983R0 <https://wg21.link/P1983R0>`__,Fixing Minor Ranges Issues,,
 `P1994R1 <https://wg21.link/P1994R1>`__,elements_view Needs Its Own sentinel,,
 `P2091R0 <https://wg21.link/P2091R0>`__,Fixing Issues With Range Access CPOs,,
 `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,,
-`LWG3280 <https://wg21.link/lwg3280>`__, View converting constructors can cause constraint recursion and are unneeded,,
-`LWG3281 <https://wg21.link/lwg3281>`__, Conversion from pair-like types to subrange is a silent semantic promotion,,
-`LWG3282 <https://wg21.link/lwg3282>`__, subrange converting constructor should disallow derived to base conversions,,
-`LWG3286 <https://wg21.link/lwg3286>`__, ranges::size is not required to be valid after a call to ranges::begin on an input range,,
-`LWG3291 <https://wg21.link/lwg3291>`__, iota_view::iterator has the wrong iterator_category,,
-`LWG3292 <https://wg21.link/lwg3292>`__, iota_view is under-constrained,,
-`LWG3299 <https://wg21.link/lwg3299>`__, Pointers don't need customized iterator behavior,,
-`LWG3301 <https://wg21.link/lwg3301>`__, transform_view::iterator has incorrect iterator_category,,
-`LWG3302 <https://wg21.link/lwg3302>`__, Range adaptor objects keys and values are unspecified,,
-`LWG3313 <https://wg21.link/lwg3313>`__, join_view::iterator::operator-- is incorrectly constrained,,
-`LWG3323 <https://wg21.link/lwg3323>`__, has-tuple-element helper concept needs convertible_to,,
-`LWG3325 <https://wg21.link/lwg3325>`__, Constrain return type of transformation function for transform_view,,
-`LWG3335 <https://wg21.link/lwg3335>`__, range_size_t and views::all_t,,
-`LWG3355 <https://wg21.link/lwg3355>`__, The memory algorithms should support move-only input iterators introduced by P1207,,
-`LWG3363 <https://wg21.link/lwg3363>`__, drop_while_view should opt-out of sized_range,,
-`LWG3364 <https://wg21.link/lwg3364>`__, Initialize data members of ranges and their iterators,,
-`LWG3381 <https://wg21.link/lwg3381>`__, begin and data must agree for contiguous_range,,
-`LWG3384 <https://wg21.link/lwg3384>`__, transform_view::sentinel has an incorrect operator-,,
-`LWG3385 <https://wg21.link/lwg3385>`__, common_iterator is not sufficiently constrained for non-copyable iterators,,
-`LWG3387 <https://wg21.link/lwg3387>`__, [range.reverse.view] reverse_view<V> unintentionally requires range<const V>,,
-`LWG3388 <https://wg21.link/lwg3388>`__, view iterator types have ill-formed <=> operators,,
-`LWG3389 <https://wg21.link/lwg3389>`__, A move-only iterator still does not have a counted_iterator,,
-`LWG3397 <https://wg21.link/lwg3397>`__, ranges::basic_istream_view::iterator should not provide iterator_category,,
-`LWG3398 <https://wg21.link/lwg3398>`__, tuple_element_t is also wrong for const subrange,,
-`LWG3474 <https://wg21.link/lwg3474>`__, Nesting join_views is broken because of CTAD,,
-`LWG3481 <https://wg21.link/LWG3481>`__,"viewable_range mishandles lvalue move-only views",,
-`LWG3500 <https://wg21.link/lwg3500>`__, join_view::iterator::operator->() is bogus,,
-`LWG3505 <https://wg21.link/lwg3505>`__, split_view::outer-iterator::operator++ misspecified,,
-`LWG3517 <https://wg21.link/LWG3517>`__,"join_view::iterator's iter_swap is underconstrained",,
-`LWG3520 <https://wg21.link/LWG3520>`__,"iter_move and iter_swap are inconsistent for transform_view::iterator",,
-`LWG3522 <https://wg21.link/LWG3522>`__,"Missing requirement on InputIterator template parameter for priority_queue constructors","|Complete|","14.0"
-`LWG3523 <https://wg21.link/LWG3523>`__,"iota_view::sentinel is not always iota_view's sentinel",,
-`LWG3532 <https://wg21.link/LWG3532>`__,"split_view<V, P>::inner-iterator<true>::operator++(int) should depend on Base",,
-`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``",,