New perldelta for 5.37.2

10 files changed, 680 insertions, 231 deletions

diff --git a/MANIFEST b/MANIFEST
index 6b27ff8eb4..1248905aa4 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -5314,6 +5314,7 @@ pod/perl5340delta.pod		Perl changes in version 5.34.0
 pod/perl5341delta.pod		Perl changes in version 5.34.1
 pod/perl5360delta.pod		Perl changes in version 5.36.0
 pod/perl5370delta.pod		Perl changes in version 5.37.0
+pod/perl5371delta.pod		Perl changes in version 5.37.1
 pod/perl561delta.pod		Perl changes in version 5.6.1
 pod/perl56delta.pod		Perl changes in version 5.6
 pod/perl581delta.pod		Perl changes in version 5.8.1
diff --git a/Makefile.SH b/Makefile.SH
index d188478c72..2478e91012 100755
--- a/Makefile.SH
+++ b/Makefile.SH
@@ -613,7 +613,7 @@ esac
 
 $spitshell >>$Makefile <<'!NO!SUBS!'
 
-perltoc_pod_prereqs = extra.pods pod/perl5371delta.pod pod/perlapi.pod pod/perlintern.pod pod/perlmodlib.pod pod/perluniprops.pod
+perltoc_pod_prereqs = extra.pods pod/perl5372delta.pod pod/perlapi.pod pod/perlintern.pod pod/perlmodlib.pod pod/perluniprops.pod
 generated_pods = pod/perltoc.pod $(perltoc_pod_prereqs)
 generated_headers = uudmap.h bitcount.h mg_data.h
 
@@ -1130,9 +1130,9 @@ pod/perlintern.pod: $(MINIPERL_EXE) autodoc.pl embed.fnc
 pod/perlmodlib.pod: $(MINIPERL_EXE) pod/perlmodlib.PL MANIFEST
 	$(MINIPERL) pod/perlmodlib.PL -q
 
-pod/perl5371delta.pod: pod/perldelta.pod
-	$(RMS) pod/perl5371delta.pod
-	$(LNS) perldelta.pod pod/perl5371delta.pod
+pod/perl5372delta.pod: pod/perldelta.pod
+	$(RMS) pod/perl5372delta.pod
+	$(LNS) perldelta.pod pod/perl5372delta.pod
 
 extra.pods: $(MINIPERL_EXE)
 	-@test ! -f extra.pods || rm -f `cat extra.pods`
diff --git a/pod/.gitignore b/pod/.gitignore
index b5b89c9e81..80d85006e9 100644
--- a/pod/.gitignore
+++ b/pod/.gitignore
@@ -47,7 +47,7 @@
 /roffitall
 
 # generated
-/perl5371delta.pod
+/perl5372delta.pod
 /perlapi.pod
 /perlintern.pod
 /perlmodlib.pod
diff --git a/pod/perl.pod b/pod/perl.pod
index 942bbd0a49..357b110c64 100644
--- a/pod/perl.pod
+++ b/pod/perl.pod
@@ -179,6 +179,7 @@ aux h2ph h2xs perlbug pl2pm pod2html pod2man splain xsubpp
 
     perlhist		Perl history records
     perldelta		Perl changes since previous version
+    perl5371delta	Perl changes in version 5.37.1
     perl5370delta	Perl changes in version 5.37.0
     perl5360delta	Perl changes in version 5.36.0
     perl5341delta	Perl changes in version 5.34.1
diff --git a/pod/perl5371delta.pod b/pod/perl5371delta.pod
new file mode 100644
index 0000000000..689b385d8e
--- /dev/null
+++ b/pod/perl5371delta.pod
@@ -0,0 +1,462 @@
+=encoding utf8
+
+=head1 NAME
+
+perl5371delta - what is new for perl v5.37.1
+
+=head1 DESCRIPTION
+
+This document describes differences between the 5.37.0 release and the 5.37.1
+release.
+
+If you are upgrading from an earlier release such as 5.36.0, first read
+L<perl5370delta>, which describes differences between 5.36.0 and 5.37.0.
+
+=head1 Deprecations
+
+=over 4
+
+=item *
+
+Removed many deprecated C functions. These have been deprecated for a long
+time. See L<https://github.com/perl/perl5/commit/7008caa915ad99e650acf2aea40612b5e48b7ba2>
+for a full list.
+
+=back
+
+=head1 Modules and Pragmata
+
+=head2 Updated Modules and Pragmata
+
+=over 4
+
+=item *
+
+L<B> has been upgraded from version 1.83 to 1.84.
+
+=item *
+
+L<Carp> has been upgraded from version 1.52 to 1.53.
+
+=item *
+
+L<Data::Dumper> has been upgraded from version 2.184 to 2.185.
+
+=item *
+
+L<encoding::warnings> has been upgraded from version 0.13 to 0.14.
+
+=item *
+
+L<ExtUtils::CBuilder> has been upgraded from version 0.280236 to 0.280237.
+
+=item *
+
+L<ExtUtils::Miniperl> has been upgraded from version 1.11 to 1.12.
+
+=item *
+
+L<feature> has been upgraded from version 1.73 to 1.74.
+
+=item *
+
+L<File::Spec> has been upgraded from version 3.84 to 3.85.
+
+=item *
+
+L<FileHandle> has been upgraded from version 2.03 to 2.04.
+
+=item *
+
+L<GDBM_File> has been upgraded from version 1.23 to 1.24.
+
+The mmapsize() method now correctly fetches the value.
+
+=item *
+
+L<Module::CoreList> has been upgraded from version 5.20220527 to 5.20220620.
+
+=item *
+
+L<ODBM_File> has been upgraded from version 1.17 to 1.18.
+
+=item *
+
+L<Opcode> has been upgraded from version 1.57 to 1.58.
+
+=item *
+
+L<POSIX> has been upgraded from version 2.03 to 2.04.
+
+=item *
+
+L<SDBM_File> has been upgraded from 1.15 to 1.16.
+
+SDBM_File now supports files over 2GB on Win32.  [github #6841]
+
+=item *
+
+L<threads> has been upgraded from version 2.27 to 2.28.
+
+=item *
+
+L<Unicode::Normalize> has been upgraded from version 1.31 to 1.32.
+
+=item *
+
+L<XS::APItest> has been upgraded from version 1.22 to 1.23.
+
+=back
+
+=head1 Documentation
+
+=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>.
+
+Additionally, the following selected changes have been made:
+
+=head3 L<perlapi>
+
+=over 4
+
+=item *
+
+Documented L<C<hv_ksplit>|perlapi/hv_ksplit>
+
+=item *
+
+Documented L<C<hv_name_set>|perlapi/hv_name_set>
+
+=item *
+
+L<C<hv_store>|perlapi/hv_store> and L<C<hv_stores>|perlapi/hv_stores>
+documentation have been greatly improved.
+
+=item *
+
+Documented L<C<gv_autoload_pv>|perlapi/gv_autoload_pv>
+
+=item *
+
+Documented L<C<gv_autoload_pvn>|perlapi/gv_autoload_pvn>
+
+=item *
+
+Documented L<C<gv_autoload_sv>|perlapi/gv_autoload_sv>
+
+=item *
+
+Documented L<C<gv_name_set>|perlapi/gv_name_set>
+
+=item *
+
+Documented L<C<start_subparse>|perlapi/start_subparse>
+
+=item *
+
+Documented L<C<SV_CHECK_THINKFIRST_COW_DROP>|perlapi/SV_CHECK_THINKFIRST_COW_DROP>
+
+=item *
+
+Documented L<C<SV_CHECK_THINKFIRST>|perlapi/SV_CHECK_THINKFIRST>
+
+=item *
+
+Documented L<C<SvPV_shrink_to_cur>|perlapi/SvPV_shrink_to_cur>
+
+=item *
+
+Documented L<C<save_aelem>|perlapi/save_aelem>
+
+=item *
+
+Documented L<C<save_aelem_flags>|perlapi/save_aelem_flags>
+
+=item *
+
+Documented L<C<save_helem>|perlapi/save_helem>
+
+=item *
+
+Documented L<C<save_helem_flags>|perlapi/save_helem_flags>
+
+=back
+
+=head3 L<perlintern>
+
+=over 4
+
+=item *
+
+Documented L<C<save_pushptr>|perlintern/save_pushptr>
+
+=item *
+
+Documented L<C<save_scalar_at>|perlintern/save_scalar_at>
+
+=back
+
+=head1 Diagnostics
+
+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>.
+
+=head2 New Diagnostics
+
+=head3 New Errors
+
+=over 4
+
+=item *
+
+A new syntax error has been added for the error that a C<catch> block does
+not have its required variable declaration. See
+L<catch block requires a (VAR)|perldiag/"catch block requires a (VAR)">
+
+=back
+
+=head3 New Warnings
+
+=over 4
+
+=item *
+
+L<Unknown locale category %d|perldiag/"Unknown locale category %d">
+
+This is a shortened form of an already existing diagnostic, for use when
+there is no new locale being switched to.  The previous diagnostic was
+misleading in such circumstances.
+
+=back
+
+=head2 Changes to Existing Diagnostics
+
+=over 4
+
+=item *
+
+Removed C<< Complex regular subexpression recursion limit (%d) exceeded >>
+
+The regular expresion engine has not used recursion in some time. This
+warning no longer makes sense.
+
+See [L<GH #19636|https://github.com/Perl/perl5/pull/19636>].
+
+=back
+
+=head1 Configuration and Compilation
+
+=over 4
+
+=item *
+
+C<make -j6 minitest> could fail due to a build conflict in building
+C<$(MINIPERL_EXE)> between the main make process and a child process.
+[github #19829]
+
+=back
+
+=head1 Testing
+
+Tests were added and changed to reflect the other additions and
+changes in this release.  Furthermore, these significant changes were
+made:
+
+=over 4
+
+=item *
+
+Unicode normalization tests have been added.
+
+=back
+
+=head1 Platform Support
+
+=head2 Discontinued Platforms
+
+=over 4
+
+=item Ultrix
+
+Support code for DEC Ultrix has been removed.  Ultrix was the native
+Unix-like operating system for various Digital Equipment Corporation
+machines.  Its final release was in 1995.
+
+=back
+
+=head2 Platform-Specific Notes
+
+=over 4
+
+=item Windows
+
+utimes() on Win32 would print a message to stderr if it failed to
+convert a supplied C<time_t> to to a C<FILETIME>. [github #19668]
+
+=back
+
+=head1 Internal Changes
+
+=over 4
+
+=item *
+
+C<get_op_descs>, C<get_op_names>, C<get_opargs>, C<get_no_modify> and
+C<get_ppaddr> have been marked deprecated.
+
+=item *
+
+C<hv_free_ent> has been marked as internal API.
+
+=item *
+
+C<save_pushptr>, C<save_pushptrptr>, and C<save_pushi32ptr> have been marked
+as internal API.
+
+=item *
+
+New bool related functions and macros have been added to complement the new
+bool type introduced in 5.36:
+
+The functions are:
+
+=over 4
+
+=item L<C<newSVbool(const bool bool_val)>|perlapi/newSVbool>
+
+=item L<C<newSV_true()>|perlapi/newSV_true>
+
+=item L<C<newSV_false()>|perlapi/newSV_false>
+
+=item L<C<sv_set_true(SV *sv)>|perlapi/sv_set_true>
+
+=item L<C<sv_set_false(SV *sv)>|perlapi/sv_set_false>
+
+=item L<C<sv_set_bool(SV *sv, const bool bool_val)>|perlapi/sv_set_bool>
+
+=back
+
+The macros are:
+
+=over 4
+
+=item L<C<SvIandPOK(sv)>|perlapi/SvIandPOK>
+
+=item L<C<SvIandPOK_off(sv)>|perlapi/SvIandPOK_off>
+
+=item L<C<SvIandPOK_on>|perlapi/SvIandPOK_on>
+
+=back
+
+=item *
+
+Perl is no longer manipulating the C<environ> array directly. The variable
+C<PL_use_safe_putenv> has been removed and C<PERL_USE_SAFE_PUTENV> is always
+defined. This means XS modules can now call C<setenv> and C<putenv> without
+causing segfaults. [L<perl #19399|https://github.com/Perl/perl5/issues/19399>]
+
+=item *
+
+Internal C API functions are now hidden with C<__attribute__((hidden))> on the
+platforms that support it. This means they are no longer callable from XS
+modules on those platforms.
+
+It should be noted that those functions have always been hidden on Windows. This
+change merely brings that to the other platforms.
+[L<perl #19655|https://github.com/Perl/perl5/pull/19655>]
+
+=back
+
+=head1 Selected Bug Fixes
+
+=over 4
+
+=item *
+
+Avoid recursion and stack overflow parsing 'pack' template
+
+[L<GH #16319|https://github.com/Perl/perl5/issues/16319>]
+
+=item *
+
+An eval() as the last statement in a regex code block could trigger an
+interpreter panic; e.g.
+
+    /(?{ ...; eval {....}; })/
+
+[L<GH #19680|https://github.com/Perl/perl5/issues/19680>]
+
+=back
+
+=head1 Acknowledgements
+
+Perl 5.37.1 represents approximately 3 weeks of development since Perl
+5.37.0 and contains approximately 75,000 lines of changes across 240 files
+from 28 authors.
+
+Excluding auto-generated files, documentation and release tools, there were
+approximately 30,000 lines of changes to 150 .pm, .t, .c and .h files.
+
+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 5.37.1:
+
+Brian Greenfield, Chris 'BinGOs' Williams, Clemens Wasser, Dan Book, David
+Mitchell, Ed Sabol, Elvin Aslanov, Graham Knop, Hugo van der Sanden, James E
+Keenan, jkahrman, Karl Williamson, Leon Timmermans, Mark Jason Dominus,
+Matthew Horsfall, Mohammad S Anwar, Neil Bowers, Nicholas Clark, Nicolas
+Mendoza, Nicolas R, Paul Evans, Ricardo Signes, Richard Leach, Sidney
+Markowitz, Sisyphus, Tomasz Konojacki, Tony Cook, Yves Orton.
+
+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.
+
+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.
+
+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
+
+If you find what you think is a bug, you might check the perl bug database
+at L<https://github.com/Perl/perl5/issues>.  There may also be information at
+L<http://www.perl.org/>, the Perl Home Page.
+
+If you believe you have an unreported bug, please open an issue at
+L<https://github.com/Perl/perl5/issues>.  Be sure to trim your bug down to a
+tiny but sufficient test case.
+
+If the bug you are reporting has security implications which make it
+inappropriate to send to a public issue tracker, then see
+L<perlsec/SECURITY VULNERABILITY CONTACT INFORMATION>
+for details of how to report the issue.
+
+=head1 Give Thanks
+
+If you wish to thank the Perl 5 Porters for the work we had done in Perl 5,
+you can do so by running the C<perlthanks> program:
+
+    perlthanks
+
+This will send an email to the Perl 5 Porters list with your show of thanks.
+
+=head1 SEE ALSO
+
+The F<Changes> file for an explanation of how to view exhaustive details on
+what changed.
+
+The F<INSTALL> file for how to build Perl.
+
+The F<README> file for general stuff.
+
+The F<Artistic> and F<Copying> files for copyright information.
+
+=cut
diff --git a/pod/perldelta.pod b/pod/perldelta.pod
index 2b88d1bfed..88c3c0c8ac 100644
--- a/pod/perldelta.pod
+++ b/pod/perldelta.pod
@@ -2,427 +2,408 @@
 
 =head1 NAME
 
-perldelta - what is new for perl v5.37.1
+[ 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 v5.37.2
 
 =head1 DESCRIPTION
 
-This document describes differences between the 5.37.0 release and the 5.37.1
+This document describes differences between the 5.37.1 release and the 5.37.2
 release.
 
-If you are upgrading from an earlier release such as 5.36.0, first read
-L<perl5370delta>, which describes differences between 5.36.0 and 5.37.0.
+If you are upgrading from an earlier release such as 5.37.0, first read
+L<perl5371delta>, which describes differences between 5.37.0 and 5.37.1.
 
-=head1 Deprecations
+=head1 Notice
 
-=over 4
+XXX Any important notices here
 
-=item *
+=head1 Core Enhancements
 
-Removed many deprecated C functions. These have been deprecated for a long
-time. See L<https://github.com/perl/perl5/commit/7008caa915ad99e650acf2aea40612b5e48b7ba2>
-for a full list.
+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.
 
-=back
+[ List each enhancement as a =head2 entry ]
 
-=head1 Modules and Pragmata
+=head1 Security
 
-=head2 Updated Modules and Pragmata
+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.
 
-=over 4
+[ List each security issue as a =head2 entry ]
 
-=item *
+=head1 Incompatible Changes
 
-L<B> has been upgraded from version 1.83 to 1.84.
+XXX For a release on a stable branch, this section aspires to be:
 
-=item *
+    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.
 
-L<Carp> has been upgraded from version 1.52 to 1.53.
+[ List each incompatible change as a =head2 entry ]
 
-=item *
+=head1 Deprecations
 
-L<Data::Dumper> has been upgraded from version 2.184 to 2.185.
+XXX Any deprecated features, syntax, modules etc. should be listed here.
 
-=item *
+=head2 Module removals
 
-L<encoding::warnings> has been upgraded from version 0.13 to 0.14.
+XXX Remove this section if not applicable.
 
-=item *
+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.
 
-L<ExtUtils::CBuilder> has been upgraded from version 0.280236 to 0.280237.
+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.
 
-=item *
+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.
 
-L<ExtUtils::Miniperl> has been upgraded from version 1.11 to 1.12.
+=over
 
-=item *
+=item XXX
 
-L<feature> has been upgraded from version 1.73 to 1.74.
+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.
 
-=item *
+=back
 
-L<File::Spec> has been upgraded from version 3.84 to 3.85.
+[ List each other deprecation as a =head2 entry ]
 
-=item *
+=head1 Performance Enhancements
 
-L<FileHandle> has been upgraded from version 2.03 to 2.04.
+XXX Changes which enhance performance without changing behaviour go here.
+There may well be none in a stable release.
+
+[ List each enhancement as an =item entry ]
+
+=over 4
 
 =item *
 
-L<GDBM_File> has been upgraded from version 1.23 to 1.24.
+XXX
 
-The mmapsize() method now correctly fetches the value.
+=back
 
-=item *
+=head1 Modules and Pragmata
 
-L<Module::CoreList> has been upgraded from version 5.20220527 to 5.20220620.
+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.
 
-=item *
+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.)
 
-L<ODBM_File> has been upgraded from version 1.17 to 1.18.
+[ Within each section, list entries as an =item entry ]
 
-=item *
+=head2 New Modules and Pragmata
 
-L<Opcode> has been upgraded from version 1.57 to 1.58.
+=over 4
 
 =item *
 
-L<POSIX> has been upgraded from version 2.03 to 2.04.
+XXX Remove this section if not applicable.
 
-=item *
+=back
 
-L<SDBM_File> has been upgraded from 1.15 to 1.16.
+=head2 Updated Modules and Pragmata
 
-SDBM_File now supports files over 2GB on Win32.  [github #6841]
+=over 4
 
 =item *
 
-L<threads> has been upgraded from version 2.27 to 2.28.
+L<XXX> has been upgraded from version A.xx to B.yy.
 
-=item *
+If there was something important to note about this change, include that here.
 
-L<Unicode::Normalize> has been upgraded from version 1.31 to 1.32.
+=back
+
+=head2 Removed Modules and Pragmata
+
+=over 4
 
 =item *
 
-L<XS::APItest> has been upgraded from version 1.22 to 1.23.
+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<perlapi>
+=head3 L<XXX>
 
 =over 4
 
 =item *
 
-Documented L<C<hv_ksplit>|perlapi/hv_ksplit>
-
-=item *
-
-Documented L<C<hv_name_set>|perlapi/hv_name_set>
+XXX Description of the change here
 
-=item *
+=back
 
-L<C<hv_store>|perlapi/hv_store> and L<C<hv_stores>|perlapi/hv_stores>
-documentation have been greatly improved.
+=head1 Diagnostics
 
-=item *
+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>.
 
-Documented L<C<gv_autoload_pv>|perlapi/gv_autoload_pv>
+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.
 
-=item *
+=head2 New Diagnostics
 
-Documented L<C<gv_autoload_pvn>|perlapi/gv_autoload_pvn>
+XXX Newly added diagnostic messages go under here, separated into New Errors
+and New Warnings
 
-=item *
+=head3 New Errors
 
-Documented L<C<gv_autoload_sv>|perlapi/gv_autoload_sv>
+=over 4
 
 =item *
 
-Documented L<C<gv_name_set>|perlapi/gv_name_set>
-
-=item *
+XXX L<message|perldiag/"message">
 
-Documented L<C<start_subparse>|perlapi/start_subparse>
+=back
 
-=item *
+=head3 New Warnings
 
-Documented L<C<SV_CHECK_THINKFIRST_COW_DROP>|perlapi/SV_CHECK_THINKFIRST_COW_DROP>
+=over 4
 
 =item *
 
-Documented L<C<SV_CHECK_THINKFIRST>|perlapi/SV_CHECK_THINKFIRST>
+XXX L<message|perldiag/"message">
 
-=item *
+=back
 
-Documented L<C<SvPV_shrink_to_cur>|perlapi/SvPV_shrink_to_cur>
+=head2 Changes to Existing Diagnostics
 
-=item *
+XXX Changes (i.e. rewording) of diagnostic messages go here
 
-Documented L<C<save_aelem>|perlapi/save_aelem>
+=over 4
 
 =item *
 
-Documented L<C<save_aelem_flags>|perlapi/save_aelem_flags>
+XXX Describe change here
 
-=item *
-
-Documented L<C<save_helem>|perlapi/save_helem>
+=back
 
-=item *
+=head1 Utility Changes
 
-Documented L<C<save_helem_flags>|perlapi/save_helem_flags>
+XXX Changes to installed programs such as F<perldoc> and F<xsubpp> go here.
+Most of these are built within the directory F<utils>.
 
-=back
+[ 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. ]
 
-=head3 L<perlintern>
+=head2 L<XXX>
 
 =over 4
 
 =item *
 
-Documented L<C<save_pushptr>|perlintern/save_pushptr>
-
-=item *
-
-Documented L<C<save_scalar_at>|perlintern/save_scalar_at>
+XXX
 
 =back
 
-=head1 Diagnostics
+=head1 Configuration and Compilation
 
-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 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.
 
-=head2 New Diagnostics
-
-=head3 New Errors
+[ List changes as an =item entry ].
 
 =over 4
 
 =item *
 
-A new syntax error has been added for the error that a C<catch> block does
-not have its required variable declaration. See
-L<catch block requires a (VAR)|perldiag/"catch block requires a (VAR)">
+XXX
 
 =back
 
-=head3 New Warnings
+=head1 Testing
 
-=over 4
+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.
 
-=item *
+XXX If there were no significant test changes, say this:
 
-L<Unknown locale category %d|perldiag/"Unknown locale category %d">
+Tests were added and changed to reflect the other additions and changes
+in this release.
 
-This is a shortened form of an already existing diagnostic, for use when
-there is no new locale being switched to.  The previous diagnostic was
-misleading in such circumstances.
+XXX If instead there were significant changes, say this:
 
-=back
+Tests were added and changed to reflect the other additions and
+changes in this release.  Furthermore, these significant changes were
+made:
 
-=head2 Changes to Existing Diagnostics
+[ List each test improvement as an =item entry ]
 
 =over 4
 
 =item *
 
-Removed C<< Complex regular subexpression recursion limit (%d) exceeded >>
-
-The regular expresion engine has not used recursion in some time. This
-warning no longer makes sense.
-
-See [L<GH #19636|https://github.com/Perl/perl5/pull/19636>].
+XXX
 
 =back
 
-=head1 Configuration and Compilation
-
-=over 4
-
-=item *
+=head1 Platform Support
 
-C<make -j6 minitest> could fail due to a build conflict in building
-C<$(MINIPERL_EXE)> between the main make process and a child process.
-[github #19829]
+XXX Any changes to platform support should be listed in the sections below.
 
-=back
+[ Within the sections, list each platform as an =item entry with specific
+changes as paragraphs below it. ]
 
-=head1 Testing
+=head2 New Platforms
 
-Tests were added and changed to reflect the other additions and
-changes in this release.  Furthermore, these significant changes were
-made:
+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 *
+=item XXX-some-platform
 
-Unicode normalization tests have been added.
+XXX
 
 =back
 
-=head1 Platform Support
-
 =head2 Discontinued Platforms
 
+XXX List any platforms that this version of perl no longer compiles on.
+
 =over 4
 
-=item Ultrix
+=item XXX-some-platform
 
-Support code for DEC Ultrix has been removed.  Ultrix was the native
-Unix-like operating system for various Digital Equipment Corporation
-machines.  Its final release was in 1995.
+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 Windows
+=item XXX-some-platform
 
-utimes() on Win32 would print a message to stderr if it failed to
-convert a supplied C<time_t> to to a C<FILETIME>. [github #19668]
+XXX
 
 =back
 
 =head1 Internal Changes
 
-=over 4
+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.
 
-=item *
+[ List each change as an =item entry ]
 
-C<get_op_descs>, C<get_op_names>, C<get_opargs>, C<get_no_modify> and
-C<get_ppaddr> have been marked deprecated.
+=over 4
 
 =item *
 
-C<hv_free_ent> has been marked as internal API.
+XXX
 
-=item *
-
-C<save_pushptr>, C<save_pushptrptr>, and C<save_pushi32ptr> have been marked
-as internal API.
+=back
 
-=item *
+=head1 Selected Bug Fixes
 
-New bool related functions and macros have been added to complement the new
-bool type introduced in 5.36:
+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>.
 
-The functions are:
+[ List each fix as an =item entry ]
 
 =over 4
 
-=item L<C<newSVbool(const bool bool_val)>|perlapi/newSVbool>
-
-=item L<C<newSV_true()>|perlapi/newSV_true>
-
-=item L<C<newSV_false()>|perlapi/newSV_false>
-
-=item L<C<sv_set_true(SV *sv)>|perlapi/sv_set_true>
-
-=item L<C<sv_set_false(SV *sv)>|perlapi/sv_set_false>
+=item *
 
-=item L<C<sv_set_bool(SV *sv, const bool bool_val)>|perlapi/sv_set_bool>
+XXX
 
 =back
 
-The macros are:
-
-=over 4
-
-=item L<C<SvIandPOK(sv)>|perlapi/SvIandPOK>
+=head1 Known Problems
 
-=item L<C<SvIandPOK_off(sv)>|perlapi/SvIandPOK_off>
+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.
 
-=item L<C<SvIandPOK_on>|perlapi/SvIandPOK_on>
+[ List each fix as an =item entry ]
 
-=back
-
-=item *
-
-Perl is no longer manipulating the C<environ> array directly. The variable
-C<PL_use_safe_putenv> has been removed and C<PERL_USE_SAFE_PUTENV> is always
-defined. This means XS modules can now call C<setenv> and C<putenv> without
-causing segfaults. [L<perl #19399|https://github.com/Perl/perl5/issues/19399>]
+=over 4
 
 =item *
 
-Internal C API functions are now hidden with C<__attribute__((hidden))> on the
-platforms that support it. This means they are no longer callable from XS
-modules on those platforms.
-
-It should be noted that those functions have always been hidden on Windows. This
-change merely brings that to the other platforms.
-[L<perl #19655|https://github.com/Perl/perl5/pull/19655>]
+XXX
 
 =back
 
-=head1 Selected Bug Fixes
+=head1 Errata From Previous Releases
 
 =over 4
 
 =item *
 
-Avoid recursion and stack overflow parsing 'pack' template
-
-[L<GH #16319|https://github.com/Perl/perl5/issues/16319>]
-
-=item *
-
-An eval() as the last statement in a regex code block could trigger an
-interpreter panic; e.g.
-
-    /(?{ ...; eval {....}; })/
-
-[L<GH #19680|https://github.com/Perl/perl5/issues/19680>]
+XXX Add anything here that we forgot to add, or were mistaken about, in
+the perldelta of a previous release.
 
 =back
 
-=head1 Acknowledgements
+=head1 Obituary
 
-Perl 5.37.1 represents approximately 3 weeks of development since Perl
-5.37.0 and contains approximately 75,000 lines of changes across 240 files
-from 28 authors.
+XXX If any significant core contributor or member of the CPAN community has
+died, add a short obituary here.
 
-Excluding auto-generated files, documentation and release tools, there were
-approximately 30,000 lines of changes to 150 .pm, .t, .c and .h files.
-
-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 5.37.1:
-
-Brian Greenfield, Chris 'BinGOs' Williams, Clemens Wasser, Dan Book, David
-Mitchell, Ed Sabol, Elvin Aslanov, Graham Knop, Hugo van der Sanden, James E
-Keenan, jkahrman, Karl Williamson, Leon Timmermans, Mark Jason Dominus,
-Matthew Horsfall, Mohammad S Anwar, Neil Bowers, Nicholas Clark, Nicolas
-Mendoza, Nicolas R, Paul Evans, Ricardo Signes, Richard Leach, Sidney
-Markowitz, Sisyphus, Tomasz Konojacki, Tony Cook, Yves Orton.
-
-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.
+=head1 Acknowledgements
 
-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.
+XXX Generate this with:
 
-For a more complete list of all of Perl's historical contributors, please
-see the F<AUTHORS> file in the Perl source distribution.
+  perl Porting/acknowledgements.pl v5.37.1..HEAD
 
 =head1 Reporting Bugs
 
diff --git a/vms/descrip_mms.template b/vms/descrip_mms.template
index a520b329f0..293da1488f 100644
--- a/vms/descrip_mms.template
+++ b/vms/descrip_mms.template
@@ -313,7 +313,7 @@ utils : $(utils1) $(utils2) $(utils3) $(utils4) $(utils5)
 extra.pods : miniperl
 	@ @extra_pods.com
 
-PERLDELTA_CURRENT = [.pod]perl5371delta.pod
+PERLDELTA_CURRENT = [.pod]perl5372delta.pod
 
 $(PERLDELTA_CURRENT) : [.pod]perldelta.pod
 	Copy/NoConfirm/Log $(MMS$SOURCE) $(PERLDELTA_CURRENT)
diff --git a/win32/GNUmakefile b/win32/GNUmakefile
index f3d744195f..88d08b4eb8 100644
--- a/win32/GNUmakefile
+++ b/win32/GNUmakefile
@@ -1625,7 +1625,7 @@ utils: $(HAVEMINIPERL) ..\utils\Makefile
 	copy ..\README.tw       ..\pod\perltw.pod
 	copy ..\README.vos      ..\pod\perlvos.pod
 	copy ..\README.win32    ..\pod\perlwin32.pod
-	copy ..\pod\perldelta.pod ..\pod\perl5371delta.pod
+	copy ..\pod\perldelta.pod ..\pod\perl5372delta.pod
 	$(MINIPERL) -I..\lib $(PL2BAT) $(UTILS)
 	$(MINIPERL) -I..\lib ..\autodoc.pl ..
 	$(MINIPERL) -I..\lib ..\pod\perlmodlib.PL -q ..
@@ -1724,7 +1724,7 @@ distclean: realclean
 	-if exist $(LIBDIR)\Win32API rmdir /s /q $(LIBDIR)\Win32API
 	-if exist $(LIBDIR)\XS rmdir /s /q $(LIBDIR)\XS
 	-cd $(PODDIR) && del /f *.html *.bat roffitall \
-	    perl5371delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
+	    perl5372delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
 	    perlapi.pod perlbs2000.pod perlcn.pod perlcygwin.pod \
 	    perlfreebsd.pod perlhaiku.pod perlhpux.pod perlhurd.pod \
 	    perlintern.pod perlirix.pod perljp.pod perlko.pod perllinux.pod \
diff --git a/win32/Makefile b/win32/Makefile
index cea5afd16c..956e399d40 100644
--- a/win32/Makefile
+++ b/win32/Makefile
@@ -1157,7 +1157,7 @@ utils: $(PERLEXE) ..\utils\Makefile
 	copy ..\README.tw       ..\pod\perltw.pod
 	copy ..\README.vos      ..\pod\perlvos.pod
 	copy ..\README.win32    ..\pod\perlwin32.pod
-	copy ..\pod\perldelta.pod ..\pod\perl5371delta.pod
+	copy ..\pod\perldelta.pod ..\pod\perl5372delta.pod
 	cd ..\win32
 	$(PERLEXE) $(PL2BAT) $(UTILS)
 	$(MINIPERL) -I..\lib ..\autodoc.pl ..
@@ -1257,7 +1257,7 @@ distclean: realclean
 	-if exist $(LIBDIR)\Win32API rmdir /s /q $(LIBDIR)\Win32API
 	-if exist $(LIBDIR)\XS rmdir /s /q $(LIBDIR)\XS
 	-cd $(PODDIR) && del /f *.html *.bat roffitall \
-	    perl5371delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
+	    perl5372delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
 	    perlapi.pod perlbs2000.pod perlcn.pod perlcygwin.pod \
 	    perlfreebsd.pod perlhaiku.pod perlhpux.pod perlhurd.pod \
 	    perlintern.pod perlirix.pod perljp.pod perlko.pod perllinux.pod \
diff --git a/win32/pod.mak b/win32/pod.mak
index eab5c25141..b3ec6db751 100644
--- a/win32/pod.mak
+++ b/win32/pod.mak
@@ -69,6 +69,7 @@ POD = perl.pod	\
 	perl5360delta.pod	\
 	perl5370delta.pod	\
 	perl5371delta.pod	\
+	perl5372delta.pod	\
 	perl561delta.pod	\
 	perl56delta.pod	\
 	perl581delta.pod	\
@@ -236,6 +237,7 @@ MAN = perl.man	\
 	perl5360delta.man	\
 	perl5370delta.man	\
 	perl5371delta.man	\
+	perl5372delta.man	\
 	perl561delta.man	\
 	perl56delta.man	\
 	perl581delta.man	\
@@ -403,6 +405,7 @@ HTML = perl.html	\
 	perl5360delta.html	\
 	perl5370delta.html	\
 	perl5371delta.html	\
+	perl5372delta.html	\
 	perl561delta.html	\
 	perl56delta.html	\
 	perl581delta.html	\
@@ -570,6 +573,7 @@ TEX = perl.tex	\
 	perl5360delta.tex	\
 	perl5370delta.tex	\
 	perl5371delta.tex	\
+	perl5372delta.tex	\
 	perl561delta.tex	\
 	perl56delta.tex	\
 	perl581delta.tex	\