Update perldelta.pod for 5.37.7

1 files changed, 77 insertions, 309 deletions

diff --git a/pod/perldelta.pod b/pod/perldelta.pod
index 845a1fb138..4f44bac108 100644
--- a/pod/perldelta.pod
+++ b/pod/perldelta.pod
@@ -2,9 +2,6 @@
 
 =head1 NAME
 
-[ this is a template for a new perldelta file.  Any text flagged as XXX needs
-to be processed before release. ]
-
 perldelta - what is new for perl v5.37.7
 
 =head1 DESCRIPTION
@@ -15,18 +12,8 @@ release.
 If you are upgrading from an earlier release such as 5.37.5, first read
 L<perl5376delta>, which describes differences between 5.37.5 and 5.37.6.
 
-=head1 Notice
-
-XXX Any important notices here
-
 =head1 Core Enhancements
 
-XXX New core language features go here.  Summarize user-visible core language
-enhancements.  Particularly prominent performance optimisations could go
-here, but most should go in the L</Performance Enhancements> section.
-
-[ List each enhancement as a =head2 entry ]
-
 =head2 Defined-or and logical-or assignment default expressions to signatures
 
 The default expression for a subroutine signature parameter can now be
@@ -42,19 +29,19 @@ edge cases and should no longer segfault or throw assert failures when
 hooks modify C<@INC> during a require operation.  As part of this we
 now ensure that any given hook is executed at most once during a require
 call, and that any duplicate directories do not trigger additional
-directories probes.
+directory probes.
 
-To provide developers more control over dynamic module lookup a new hook
+To provide developers more control over dynamic module lookup, a new hook
 method C<INCDIR> is now supported. An object supporting this method may be
 injected into the C<@INC> array, and when it is encountered in the module
 search process it will be executed, just like how INC hooks are executed,
 and its return value used as a list of directories to search for the
-module. Returning an empty list acts as a no-op. Note that any references
-returned by this hook will be stringified and used as strings, you may not
-return a hook to be executed later via this API.
+module. Returning an empty list acts as a no-op. Note that since any
+references returned by this hook will be stringified and used as strings,
+you may not return a hook to be executed later via this API.
 
 When an C<@INC> hook (either C<INC> or C<INCDIR>) is called during
-require the C<$INC> variable will be localized to be the value of the
+require, the C<$INC> variable will be localized to be the value of the
 index of C<@INC> that the hook came from. If the hook wishes to override
 what the "next" index in C<@INC> should be it may update C<$INC> to be one
 less than the desired index (C<undef> is equivalent to C<-1>). This
@@ -78,107 +65,55 @@ a previous version of perl is now reported as a compile-time error with this
 one. This only happens in cases where it would have been an error to actually
 execute the code anyway; the error simply happens at an earlier time.
 
-=head1 Security
-
-XXX Any security-related notices go here.  In particular, any security
-vulnerabilities closed should be noted here rather than in the
-L</Selected Bug Fixes> section.
-
-[ List each security issue as a =head2 entry ]
-
-=head1 Incompatible Changes
-
-XXX For a release on a stable branch, this section aspires to be:
-
-    There are no changes intentionally incompatible with 5.XXX.XXX
-    If any exist, they are bugs, and we request that you submit a
-    report.  See L</Reporting Bugs> below.
-
-[ List each incompatible change as a =head2 entry ]
-
-=head1 Deprecations
-
-XXX Any deprecated features, syntax, modules etc. should be listed here.
-
-=head2 Module removals
-
-XXX Remove this section if not applicable.
-
-The following modules will be removed from the core distribution in a
-future release, and will at that time need to be installed from CPAN.
-Distributions on CPAN which require these modules will need to list them as
-prerequisites.
-
-The core versions of these modules will now issue C<"deprecated">-category
-warnings to alert you to this fact.  To silence these deprecation warnings,
-install the modules in question from CPAN.
+=head1 Modules and Pragmata
 
-Note that these are (with rare exceptions) fine modules that you are encouraged
-to continue to use.  Their disinclusion from core primarily hinges on their
-necessity to bootstrapping a fully functional, CPAN-capable Perl installation,
-not usually on concerns over their design.
+=head2 Updated Modules and Pragmata
 
-=over
+=over 4
 
-=item XXX
+=item *
 
-XXX Note that deprecated modules should be listed here even if they are listed
-as an updated module in the L</Modules and Pragmata> section.
+L<B::Deparse> has been upgraded from version 1.71 to 1.72.
 
-=back
+=item *
 
-[ List each other deprecation as a =head2 entry ]
+L<experimental> has been upgraded from version 0.029 to 0.030.
 
-=head1 Performance Enhancements
+=item *
 
-XXX Changes which enhance performance without changing behaviour go here.
-There may well be none in a stable release.
+L<ExtUtils::Miniperl> has been upgraded from version 1.12 to 1.13.
 
-[ List each enhancement as an =item entry ]
+=item *
 
-=over 4
+L<ExtUtils::ParseXS> has been upgraded from version 3.48 to 3.49.
 
 =item *
 
-XXX
-
-=back
+L<ExtUtils::Typemaps> has been upgraded from version 3.48 to 3.49.
 
-=head1 Modules and Pragmata
+=item *
 
-XXX All changes to installed files in F<cpan/>, F<dist/>, F<ext/> and F<lib/>
-go here.  If Module::CoreList is updated, generate an initial draft of the
-following sections using F<Porting/corelist-perldelta.pl>.  A paragraph summary
-for important changes should then be added by hand.  In an ideal world,
-dual-life modules would have a F<Changes> file that could be cribbed.
+L<feature> has been upgraded from version 1.77 to 1.78.
 
-The list of new and updated modules is modified automatically as part of
-preparing a Perl release, so the only reason to manually add entries here is if
-you're summarising the important changes in the module update. (Also, if the
-manually-added details don't match the automatically-generated ones, the
-release manager will have to investigate the situation carefully.)
+=item *
 
-[ Within each section, list entries as an =item entry ]
+L<File::Glob> has been upgraded from version 1.38 to 1.39.
 
-=head2 New Modules and Pragmata
+=item *
 
-=over 4
+L<File::Spec> has been upgraded from version 3.86 to 3.88.
 
 =item *
 
-XXX Remove this section if not applicable.
-
-=back
+L<Module::CoreList> has been upgraded from version 5.20221120 to 5.20221220.
 
-=head2 Updated Modules and Pragmata
+=item *
 
-=over 4
+L<Opcode> has been upgraded from version 1.62 to 1.63.
 
 =item *
 
-L<XXX> has been upgraded from version A.xx to B.yy.
-
-If there was something important to note about this change, include that here.
+L<parent> has been upgraded from version 0.238 to 0.239.
 
 =item *
 
@@ -188,67 +123,22 @@ Pod::Html::Util.
 
 =item *
 
-L<experimental> has been upgraded to version 0.030.
+L<podlators> has been upgraded from version 4.14 to 5.00.
 
 =item *
 
-L<parent> has been upgraded to version 2.39.
-
-=item *
-
-L<podlators> has been upgraded to version 5.00.
-
-=item *
-
-L<POSIX> has been upgraded from version 2.09 to 2.10.  All fields known
+L<POSIX> has been upgraded from version 2.08 to 2.10.  All fields known
 to the platform in L<localeconv(3)> are now returned by
 L<POSIX/localeconv>.  Previously, empty string fields and numeric fields
 that aren't applicable to the current locale were omitted.
 
-=back
-
-=head2 Removed Modules and Pragmata
-
-=over 4
-
 =item *
 
-XXX
-
-=back
-
-=head1 Documentation
-
-XXX Changes to files in F<pod/> go here.  Consider grouping entries by
-file and be sure to link to the appropriate page, e.g. L<perlfunc>.
-
-=head2 New Documentation
-
-XXX Changes which create B<new> files in F<pod/> go here.
-
-=head3 L<XXX>
-
-XXX Description of the purpose of the new file here
-
-=head2 Changes to Existing Documentation
-
-We have attempted to update the documentation to reflect the changes
-listed in this document.  If you find any we have missed, open an issue
-at L<https://github.com/Perl/perl5/issues>.
-
-XXX Changes which significantly change existing files in F<pod/> go here.
-However, any changes to F<pod/perldiag.pod> should go in the L</Diagnostics>
-section.
-
-Additionally, the following selected changes have been made:
-
-=head3 L<XXX>
-
-=over 4
+L<threads> has been upgraded from version 2.32 to 2.33.
 
 =item *
 
-XXX Description of the change here
+L<XS::APItest> has been upgraded from version 1.27 to 1.28.
 
 =back
 
@@ -258,14 +148,8 @@ The following additions or changes have been made to diagnostic output,
 including warnings and fatal error messages.  For the complete list of
 diagnostic messages, see L<perldiag>.
 
-XXX New or changed warnings emitted by the core's C<C> code go here.  Also
-include any changes in L<perldiag> that reconcile it to the C<C> code.
-
 =head2 New Diagnostics
 
-XXX Newly added diagnostic messages go under here, separated into New Errors
-and New Warnings
-
 =head3 New Errors
 
 =over 4
@@ -275,26 +159,10 @@ and New Warnings
 L<Object with arguments in @INC does not support a hook method
  |perldiag/"Object with arguments in @INC does not support a hook method">
 
-=item *
-
-XXX L<message|perldiag/"message">
-
-=back
-
-=head3 New Warnings
-
-=over 4
-
-=item *
-
-XXX L<message|perldiag/"message">
-
 =back
 
 =head2 Changes to Existing Diagnostics
 
-XXX Changes (i.e. rewording) of diagnostic messages go here
-
 =over 4
 
 =item *
@@ -328,134 +196,15 @@ C<qr/\@INC[ \w]+:/> instead of using C<qr/\@INC contains:/> or
 C<qr/\@INC entries checked:/> in tests as this will ensure both forward
 and backward compatibility.
 
-=item *
-
-XXX Describe change here
-
-=back
-
-=head1 Utility Changes
-
-XXX Changes to installed programs such as F<perldoc> and F<xsubpp> go here.
-Most of these are built within the directory F<utils>.
-
-[ List utility changes as a =head2 entry for each utility and =item
-entries for each change
-Use L<XXX> with program names to get proper documentation linking. ]
-
-=head2 L<XXX>
-
-=over 4
-
-=item *
-
-XXX
-
-=back
-
-=head1 Configuration and Compilation
-
-XXX Changes to F<Configure>, F<installperl>, F<installman>, and analogous tools
-go here.  Any other changes to the Perl build process should be listed here.
-However, any platform-specific changes should be listed in the
-L</Platform Support> section, instead.
-
-[ List changes as an =item entry ].
-
-=over 4
-
-=item *
-
-XXX
-
 =back
 
 =head1 Testing
 
-XXX Any significant changes to the testing of a freshly built perl should be
-listed here.  Changes which create B<new> files in F<t/> go here as do any
-large changes to the testing harness (e.g. when parallel testing was added).
-Changes to existing files in F<t/> aren't worth summarizing, although the bugs
-that they represent may be covered elsewhere.
-
-XXX If there were no significant test changes, say this:
-
 Tests were added and changed to reflect the other additions and changes
 in this release.
 
-XXX If instead there were significant changes, say this:
-
-Tests were added and changed to reflect the other additions and
-changes in this release.  Furthermore, these significant changes were
-made:
-
-[ List each test improvement as an =item entry ]
-
-=over 4
-
-=item *
-
-XXX
-
-=back
-
-=head1 Platform Support
-
-XXX Any changes to platform support should be listed in the sections below.
-
-[ Within the sections, list each platform as an =item entry with specific
-changes as paragraphs below it. ]
-
-=head2 New Platforms
-
-XXX List any platforms that this version of perl compiles on, that previous
-versions did not.  These will either be enabled by new files in the F<hints/>
-directories, or new subdirectories and F<README> files at the top level of the
-source tree.
-
-=over 4
-
-=item XXX-some-platform
-
-XXX
-
-=back
-
-=head2 Discontinued Platforms
-
-XXX List any platforms that this version of perl no longer compiles on.
-
-=over 4
-
-=item XXX-some-platform
-
-XXX
-
-=back
-
-=head2 Platform-Specific Notes
-
-XXX List any changes for specific platforms.  This could include configuration
-and compilation changes or changes in portability/compatibility.  However,
-changes within modules for platforms should generally be listed in the
-L</Modules and Pragmata> section.
-
-=over 4
-
-=item XXX-some-platform
-
-XXX
-
-=back
-
 =head1 Internal Changes
 
-XXX Changes which affect the interface available to C<XS> code go here.  Other
-significant internal changes for future core maintainers should be noted as
-well.
-
-[ List each change as an =item entry ]
-
 =over 4
 
 =item *
@@ -468,18 +217,13 @@ to maintain the codebase.
 
 =head1 Selected Bug Fixes
 
-XXX Important bug fixes in the core language are summarized here.  Bug fixes in
-files in F<ext/> and F<lib/> are best summarized in L</Modules and Pragmata>.
-
-[ List each fix as an =item entry ]
-
 =over 4
 
 =item *
 
 Correctly handle C<OP_ANONCODE> ops generated by CPAN modules that
 don't include the OPf_REF flag when propagating lvalue context.
-[github #20532]
+L<[GH #20532]|https://github.com/Perl/perl5/pull/20532>
 
 =item *
 
@@ -500,46 +244,70 @@ input is returned unchanged.
 Double FETCH during stringification of tied scalars returning an
 overloaded object have been fixed. The FETCH method should only be
 called once, but prior to this release was actually called twice.
+L<[GH #20574]|https://github.com/Perl/perl5/pull/20574>
 
 =back
 
 =head1 Known Problems
 
-XXX Descriptions of platform agnostic bugs we know we can't fix go here.  Any
-tests that had to be C<TODO>ed for the release would be noted here.  Unfixed
-platform specific bugs also go here.
-
-[ List each fix as an =item entry ]
-
 =over 4
 
 =item *
 
-XXX
+CPAN modules not yet aware of new OPs
 
-=back
+L<Devel::Caller>
+L<[RT #144051]|https://rt.cpan.org/Ticket/Display.html?id=144051>
+has not yet been updated to add awareness of new OPs introduced in
+this development cycle.
+L<[GH #20114]|https://github.com/Perl/perl5/issues/20114>. A patch has
+been submitted upstream but this has not been incorporated into a new
+release yet.
 
-=head1 Errata From Previous Releases
+L<Test::Vars>
+L<[Test-Vars/GH #47]|https://github.com/houseabsolute/p5-Test-Vars/issues/47>
+also requires updating, but since this module's own tests are not
+failing, it is harder to determine how the new OPs should be
+accounted for. A potential patch has been submitted upstream, but
+awaits maintainer assessment.
 
-=over 4
+L<Data::Alias>
+L<[RT #145279]|https://rt.cpan.org/Ticket/Display.html?id=145279> also
+requires updating to add awareness of new OPs. Investigation is pending
+and no patch has yet been submitted upstream.
 
-=item *
+=back
 
-XXX Add anything here that we forgot to add, or were mistaken about, in
-the perldelta of a previous release.
+=head1 Acknowledgements
 
-=back
+Perl 5.37.7 represents approximately 4 weeks of development since Perl
+5.37.6 and contains approximately 42,000 lines of changes across 250 files
+from 20 authors.
 
-=head1 Obituary
+Excluding auto-generated files, documentation and release tools, there were
+approximately 33,000 lines of changes to 140 .pm, .t, .c and .h files.
 
-XXX If any significant core contributor or member of the CPAN community has
-died, add a short obituary here.
+Perl continues to flourish into its fourth decade thanks to a vibrant
+community of users and developers. The following people are known to have
+contributed the improvements that became Perl 5.37.7:
 
-=head1 Acknowledgements
+Bart Van Assche, Craig A. Berry, Eric Herman, Felipe Gasper, Graham Knop,
+James E Keenan, Karl Williamson, Leon Timmermans, Matthew O. Persico, Max
+Maischein, Paul Evans, Philippe Bruhat (BooK), Richard Leach, Russ Allbery,
+Scott Baker, Tomasz Konojacki, Tony Cook, Tsuyoshi Watanabe, Yves Orton,
+Zakariyya Mughal.
+
+The list above is almost certainly incomplete as it is automatically
+generated from version control history. In particular, it does not include
+the names of the (very much appreciated) contributors who reported issues to
+the Perl bug tracker.
 
-XXX Generate this with:
+Many of the changes included in this version originated in the CPAN modules
+included in Perl's core. We're grateful to the entire CPAN community for
+helping Perl to flourish.
 
-  perl Porting/acknowledgements.pl v5.37.6..HEAD
+For a more complete list of all of Perl's historical contributors, please
+see the F<AUTHORS> file in the Perl source distribution.
 
 =head1 Reporting Bugs