New perldelta for 5.35.11

10 files changed, 608 insertions, 159 deletions

diff --git a/MANIFEST b/MANIFEST
index 90c3b0f920..8f04a096aa 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -5287,6 +5287,7 @@ pod/perl5321delta.pod		Perl changes in version 5.32.1
 pod/perl5340delta.pod		Perl changes in version 5.34.0
 pod/perl5341delta.pod		Perl changes in version 5.34.1
 pod/perl5350delta.pod		Perl changes in version 5.35.0
+pod/perl53510delta.pod		Perl changes in version 5.35.10
 pod/perl5351delta.pod		Perl changes in version 5.35.1
 pod/perl5352delta.pod		Perl changes in version 5.35.2
 pod/perl5353delta.pod		Perl changes in version 5.35.3
diff --git a/Makefile.SH b/Makefile.SH
index 0bc65f8896..074ae00fdd 100755
--- a/Makefile.SH
+++ b/Makefile.SH
@@ -613,7 +613,7 @@ esac
 
 $spitshell >>$Makefile <<'!NO!SUBS!'
 
-perltoc_pod_prereqs = extra.pods pod/perl53510delta.pod pod/perlapi.pod pod/perlintern.pod pod/perlmodlib.pod pod/perluniprops.pod
+perltoc_pod_prereqs = extra.pods pod/perl53511delta.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
 
@@ -1129,9 +1129,9 @@ pod/perlintern.pod: $(MINIPERL_EXE) autodoc.pl embed.fnc
 pod/perlmodlib.pod: $(MINIPERL_EXE) pod/perlmodlib.PL MANIFEST
 	$(MINIPERL) pod/perlmodlib.PL -q
 
-pod/perl53510delta.pod: pod/perldelta.pod
-	$(RMS) pod/perl53510delta.pod
-	$(LNS) perldelta.pod pod/perl53510delta.pod
+pod/perl53511delta.pod: pod/perldelta.pod
+	$(RMS) pod/perl53511delta.pod
+	$(LNS) perldelta.pod pod/perl53511delta.pod
 
 extra.pods: $(MINIPERL_EXE)
 	-@test ! -f extra.pods || rm -f `cat extra.pods`
diff --git a/pod/.gitignore b/pod/.gitignore
index c2ceba51b9..e47d3a5994 100644
--- a/pod/.gitignore
+++ b/pod/.gitignore
@@ -48,7 +48,7 @@
 /roffitall
 
 # generated
-/perl53510delta.pod
+/perl53511delta.pod
 /perlapi.pod
 /perlintern.pod
 /perlmodlib.pod
diff --git a/pod/perl.pod b/pod/perl.pod
index 742d5560dd..bd4d1ced66 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
+    perl53510delta	Perl changes in version 5.35.10
     perl5359delta	Perl changes in version 5.35.9
     perl5358delta	Perl changes in version 5.35.8
     perl5357delta	Perl changes in version 5.35.7
diff --git a/pod/perl53510delta.pod b/pod/perl53510delta.pod
new file mode 100644
index 0000000000..bd1f0e2b9d
--- /dev/null
+++ b/pod/perl53510delta.pod
@@ -0,0 +1,315 @@
+=encoding utf8
+
+=head1 NAME
+
+perl53510delta - what is new for perl v5.35.10
+
+=head1 DESCRIPTION
+
+This document describes differences between the 5.35.9 release and the 5.35.10
+release.
+
+If you are upgrading from an earlier release such as 5.35.8, first read
+L<perl5359delta>, which describes differences between 5.35.8 and 5.35.9.
+
+=head1 Core Enhancements
+
+=head2 New function C<builtin::trim>
+
+This function treats its argument as a string, returning the result of
+removing all white space at its beginning and ending.  See
+L<builtin/trim>
+
+=head2 Variable length lookbehind is mostly no longer considered experimental.
+
+Prior to this release any form of variable length lookbehind was
+considered experimental. With this release the experimental status has
+been reduced to cover only lookbehind that contains capturing parenthesis.
+This is because it is not clear if
+
+    "aaz"=~/(?=z)(?<=(a|aa))/
+
+should match and leave $1 equaling "a" or "aa". Currently it will match
+the longest possible alternative, "aa". We are confident that the overall
+construct will now match only when it should, we are not confident that we
+will keep the current "longest match" behavior.
+
+=head2 Added 'builtin::indexed'
+
+A new function has been added to the C<builtin> package, called C<indexed>.
+It returns a list twice as big as its argument list, where each item is
+preceded by its index within that list. This is primarily useful for using
+the new C<foreach> syntax with multiple iterator variables to iterate over
+an array or list, while also tracking the index of each item:
+
+    use builtin 'indexed';
+
+    foreach my ($index, $val) (indexed @array) {
+        ...
+    }
+
+=head2 Added experimental feature 'extra_paired_delimiters'
+
+Perl traditionally has allowed just four pairs of string/pattern
+delimiters: S<C<( )>> S<C<{ }>> S<C<[ ]>> and S<C<< < > >>>, all in the
+ASCII range.  Unicode has hundreds more possibilities, and using this
+feature enables many of them.  When enabled, you can say S<C<qr« »>> for
+example, or S<C<use utf8; <q𝄃string𝄂>>.  See
+L<feature/The 'extra_paired_delimiters' feature> for
+details.
+
+=head1 Performance Enhancements
+
+=over 4
+
+=item *
+
+Large hashes no longer allocate their keys from the shared string table.
+
+The same internal datatype (C<PVHV>) is used for all of
+
+=over 4
+
+=item *
+
+Symbol tables
+
+=item *
+
+Objects (by default)
+
+=item *
+
+Associative arrays
+
+=back
+
+The shared string table was originally added to improve performance for blessed
+hashes used as objects, because every object instance has the same keys, so it
+is an optimisation to share memory between them. It also makes sense for symbol
+tables, where derived classes will have the same keys (typically method names),
+and the OP trees built for method calls can also share memory. The shared
+string table behaves roughly like a cache for hash keys.
+
+But for hashes actually used as associative arrays - mapping keys to values -
+typically the keys are not re-used in other hashes. For example, "seen" hashes
+are keyed by object IDs (or addresses), and logically these keys won't repeat
+in other hashes.
+
+Storing these "used just once" keys in the shared string table increases CPU
+and RAM use for no gain. For such keys the shared string table behaves as a
+cache with a 0% hit rate. Storing all the keys there increases the total size
+of the shared string table, as well as increasing the number of times it is
+resized as it grows. B<Worse> - in any environment that has "copy on write"
+memory for child process (such as a pre-forking server), the memory pages used
+for the shared string table rapidly need to be copied as the child process
+manipulates hashes. Hence if most of the shared string table is such keys that
+are used only in one place, there is no benefit from re-use within the perl
+interpreter, but a high cost due to more pages for the OS to copy.
+
+The perl interpreter now disables shared hash keys for "large" hashes (that are
+neither objects nor symbol tables). "Large" is a heuristic - currently the
+heuristic is that sharing is disabled when adding a key to a hash triggers
+allocation of more storage, and the hash has more than 42 keys.
+
+This B<might> cause slightly increased memory usage for programs that create
+(unblessed) data structures that contain multiple large hashes that share the
+same keys. But generally our testing suggests that for the specific cases
+described it is a win, and other code is unaffected.
+
+=back
+
+=head1 Modules and Pragmata
+
+=head2 Updated Modules and Pragmata
+
+=over 4
+
+=item *
+
+L<Attribute::Handlers> has been upgraded from version 1.01 to 1.02.
+
+=item *
+
+L<B::Deparse> has been upgraded from version 1.62 to 1.63.
+
+=item *
+
+L<DB_File> has been upgraded from version 1.856 to 1.857.
+
+=item *
+
+L<Devel::PPPort> has been upgraded from version 3.64 to 3.68.
+
+=item *
+
+L<experimental> has been upgraded from version 0.027 to 0.028.
+
+=item *
+
+L<ExtUtils::ParseXS> has been upgraded from version 3.44 to 3.45.
+
+=item *
+
+L<ExtUtils::Typemaps> has been upgraded from version 3.44 to 3.45.
+
+=item *
+
+L<feature> has been upgraded from version 1.70 to 1.71.
+
+=item *
+
+L<File::Spec> has been upgraded from version 3.83 to 3.84.
+
+=item *
+
+L<GDBM_File> has been upgraded from version 1.22 to 1.23.
+
+=item *
+
+L<Module::CoreList> has been upgraded from version 5.20220220 to 5.20220320.
+
+=item *
+
+L<Opcode> has been upgraded from version 1.56 to 1.57.
+
+=item *
+
+L<Scalar::Util> has been upgraded from version 1.61 to 1.62.
+
+=item *
+
+L<Test::Simple> has been upgraded from version 1.302188 to 1.302190.
+
+=item *
+
+L<warnings> has been upgraded from version 1.57 to 1.58.
+
+=item *
+
+L<XS::APItest> has been upgraded from version 1.21 to 1.22.
+
+=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>.
+
+=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 *
+
+L<Wide character in $0|perldiag/"Wide character in %s">
+
+Attempts to put wide characters into the program name (C<$0>) now
+provoke this warning.
+
+=back
+
+=head2 Changes to Existing Diagnostics
+
+=over 4
+
+=item * New 'scalar' category for "Useless use of sort in scalar context"
+
+When C<sort> is used in scalar context, it provokes a warning that this is not
+useful. This warning used to be in the C<void> category. A new category for
+warnings about scalar context has now been added, called C<scalar>.
+
+=back
+
+=head1 Internal Changes
+
+=over 4
+
+=item *
+
+C<sv_dump> (and L<Devel::Peek>’s C<Dump> function) now escapes high-bit
+octets in the PV as hex rather than octal. Since most folks understand hex
+more readily than octal, this should make these dumps a bit more legible.
+This does B<not> affect any other diagnostic interfaces like C<pv_display>.
+
+=back
+
+=head1 Acknowledgements
+
+Perl 5.35.10 represents approximately 4 weeks of development since Perl
+5.35.9 and contains approximately 15,000 lines of changes across 300 files
+from 26 authors.
+
+Excluding auto-generated files, documentation and release tools, there were
+approximately 6,900 lines of changes to 190 .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 5.35.10:
+
+Bernd, Brad Barden, Chad Granum, cuishuang, Curtis Poe, Dagfinn Ilmari
+Mannsåker, Daniel Laügt, Felipe Gasper, Graham Knop, Hugo van der Sanden,
+James E Keenan, Karl Williamson, Leon Timmermans, Matthew Horsfall, Michiel
+Beijen, Nicholas Clark, Nicolas R, Paul Evans, Renee Baecker, Ricardo
+Signes, Richard Leach, Sawyer X, Sisyphus, Steve Hay, TAKAI Kousuke, 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 10182f1a64..e76912aa47 100644
--- a/pod/perldelta.pod
+++ b/pod/perldelta.pod
@@ -2,280 +2,408 @@
 
 =head1 NAME
 
-perldelta - what is new for perl v5.35.10
+[ 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 v5.35.11
 
 =head1 DESCRIPTION
 
-This document describes differences between the 5.35.9 release and the 5.35.10
+This document describes differences between the 5.35.10 release and the 5.35.11
 release.
 
-If you are upgrading from an earlier release such as 5.35.8, first read
-L<perl5359delta>, which describes differences between 5.35.8 and 5.35.9.
+If you are upgrading from an earlier release such as 5.35.9, first read
+L<perl53510delta>, which describes differences between 5.35.9 and 5.35.10.
+
+=head1 Notice
+
+XXX Any important notices here
 
 =head1 Core Enhancements
 
-=head2 New function C<builtin::trim>
+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 ]
+
+=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:
 
-This function treats its argument as a string, returning the result of
-removing all white space at its beginning and ending.  See
-L<builtin/trim>
+    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.
 
-=head2 Variable length lookbehind is mostly no longer considered experimental.
+[ List each incompatible change as a =head2 entry ]
 
-Prior to this release any form of variable length lookbehind was
-considered experimental. With this release the experimental status has
-been reduced to cover only lookbehind that contains capturing parenthesis.
-This is because it is not clear if
+=head1 Deprecations
 
-    "aaz"=~/(?=z)(?<=(a|aa))/
+XXX Any deprecated features, syntax, modules etc. should be listed here.
 
-should match and leave $1 equaling "a" or "aa". Currently it will match
-the longest possible alternative, "aa". We are confident that the overall
-construct will now match only when it should, we are not confident that we
-will keep the current "longest match" behavior.
+=head2 Module removals
 
-=head2 Added 'builtin::indexed'
+XXX Remove this section if not applicable.
 
-A new function has been added to the C<builtin> package, called C<indexed>.
-It returns a list twice as big as its argument list, where each item is
-preceded by its index within that list. This is primarily useful for using
-the new C<foreach> syntax with multiple iterator variables to iterate over
-an array or list, while also tracking the index of each 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.
 
-    use builtin 'indexed';
+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.
 
-    foreach my ($index, $val) (indexed @array) {
-        ...
-    }
+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 Added experimental feature 'extra_paired_delimiters'
+=over
 
-Perl traditionally has allowed just four pairs of string/pattern
-delimiters: S<C<( )>> S<C<{ }>> S<C<[ ]>> and S<C<< < > >>>, all in the
-ASCII range.  Unicode has hundreds more possibilities, and using this
-feature enables many of them.  When enabled, you can say S<C<qr« »>> for
-example, or S<C<use utf8; <q𝄃string𝄂>>.  See
-L<feature/The 'extra_paired_delimiters' feature> for
-details.
+=item XXX
+
+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.
+
+=back
+
+[ List each other deprecation as a =head2 entry ]
 
 =head1 Performance Enhancements
 
+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 *
 
-Large hashes no longer allocate their keys from the shared string table.
+XXX
+
+=back
+
+=head1 Modules and Pragmata
+
+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.
+
+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.)
 
-The same internal datatype (C<PVHV>) is used for all of
+[ Within each section, list entries as an =item entry ]
+
+=head2 New Modules and Pragmata
 
 =over 4
 
 =item *
 
-Symbol tables
+XXX Remove this section if not applicable.
 
-=item *
+=back
+
+=head2 Updated Modules and Pragmata
 
-Objects (by default)
+=over 4
 
 =item *
 
-Associative arrays
+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.
 
 =back
 
-The shared string table was originally added to improve performance for blessed
-hashes used as objects, because every object instance has the same keys, so it
-is an optimisation to share memory between them. It also makes sense for symbol
-tables, where derived classes will have the same keys (typically method names),
-and the OP trees built for method calls can also share memory. The shared
-string table behaves roughly like a cache for hash keys.
-
-But for hashes actually used as associative arrays - mapping keys to values -
-typically the keys are not re-used in other hashes. For example, "seen" hashes
-are keyed by object IDs (or addresses), and logically these keys won't repeat
-in other hashes.
-
-Storing these "used just once" keys in the shared string table increases CPU
-and RAM use for no gain. For such keys the shared string table behaves as a
-cache with a 0% hit rate. Storing all the keys there increases the total size
-of the shared string table, as well as increasing the number of times it is
-resized as it grows. B<Worse> - in any environment that has "copy on write"
-memory for child process (such as a pre-forking server), the memory pages used
-for the shared string table rapidly need to be copied as the child process
-manipulates hashes. Hence if most of the shared string table is such keys that
-are used only in one place, there is no benefit from re-use within the perl
-interpreter, but a high cost due to more pages for the OS to copy.
-
-The perl interpreter now disables shared hash keys for "large" hashes (that are
-neither objects nor symbol tables). "Large" is a heuristic - currently the
-heuristic is that sharing is disabled when adding a key to a hash triggers
-allocation of more storage, and the hash has more than 42 keys.
-
-This B<might> cause slightly increased memory usage for programs that create
-(unblessed) data structures that contain multiple large hashes that share the
-same keys. But generally our testing suggests that for the specific cases
-described it is a win, and other code is unaffected.
+=head2 Removed Modules and Pragmata
+
+=over 4
+
+=item *
+
+XXX
 
 =back
 
-=head1 Modules and Pragmata
+=head1 Documentation
 
-=head2 Updated Modules and Pragmata
+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
 
 =item *
 
-L<Attribute::Handlers> has been upgraded from version 1.01 to 1.02.
+XXX Description of the change here
 
-=item *
+=back
 
-L<B::Deparse> has been upgraded from version 1.62 to 1.63.
+=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>.
 
-L<DB_File> has been upgraded from version 1.856 to 1.857.
+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
 
-L<Devel::PPPort> has been upgraded from version 3.64 to 3.68.
+XXX Newly added diagnostic messages go under here, separated into New Errors
+and New Warnings
 
-=item *
+=head3 New Errors
 
-L<experimental> has been upgraded from version 0.027 to 0.028.
+=over 4
 
 =item *
 
-L<ExtUtils::ParseXS> has been upgraded from version 3.44 to 3.45.
+XXX L<message|perldiag/"message">
 
-=item *
+=back
 
-L<ExtUtils::Typemaps> has been upgraded from version 3.44 to 3.45.
+=head3 New Warnings
+
+=over 4
 
 =item *
 
-L<feature> has been upgraded from version 1.70 to 1.71.
+XXX L<message|perldiag/"message">
 
-=item *
+=back
 
-L<File::Spec> has been upgraded from version 3.83 to 3.84.
+=head2 Changes to Existing Diagnostics
 
-=item *
+XXX Changes (i.e. rewording) of diagnostic messages go here
 
-L<GDBM_File> has been upgraded from version 1.22 to 1.23.
+=over 4
 
 =item *
 
-L<Module::CoreList> has been upgraded from version 5.20220220 to 5.20220320.
+XXX Describe change here
 
-=item *
+=back
 
-L<Opcode> has been upgraded from version 1.56 to 1.57.
+=head1 Utility Changes
 
-=item *
+XXX Changes to installed programs such as F<perldoc> and F<xsubpp> go here.
+Most of these are built within the directory F<utils>.
 
-L<Scalar::Util> has been upgraded from version 1.61 to 1.62.
+[ 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. ]
 
-=item *
+=head2 L<XXX>
 
-L<Test::Simple> has been upgraded from version 1.302188 to 1.302190.
+=over 4
 
 =item *
 
-L<warnings> has been upgraded from version 1.57 to 1.58.
+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 *
 
-L<XS::APItest> has been upgraded from version 1.21 to 1.22.
+XXX
 
 =back
 
-=head1 Documentation
+=head1 Testing
 
-=head2 Changes to Existing Documentation
+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.
 
-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 If there were no significant test changes, say this:
 
-=head1 Diagnostics
+Tests were added and changed to reflect the other additions and changes
+in this release.
 
-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 If instead there were significant changes, say this:
 
-=head2 New Diagnostics
+Tests were added and changed to reflect the other additions and
+changes in this release.  Furthermore, these significant changes were
+made:
 
-=head3 New Errors
+[ List each test improvement as an =item entry ]
 
 =over 4
 
 =item *
 
-L<Wide character in $0|perldiag/"Wide character in %s">
+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. ]
 
-Attempts to put wide characters into the program name (C<$0>) now
-provoke this warning.
+=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 Changes to Existing Diagnostics
+=head2 Discontinued Platforms
+
+XXX List any platforms that this version of perl no longer compiles on.
 
 =over 4
 
-=item * New 'scalar' category for "Useless use of sort in scalar context"
+=item XXX-some-platform
 
-When C<sort> is used in scalar context, it provokes a warning that this is not
-useful. This warning used to be in the C<void> category. A new category for
-warnings about scalar context has now been added, called C<scalar>.
+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 *
 
-C<sv_dump> (and L<Devel::Peek>’s C<Dump> function) now escapes high-bit
-octets in the PV as hex rather than octal. Since most folks understand hex
-more readily than octal, this should make these dumps a bit more legible.
-This does B<not> affect any other diagnostic interfaces like C<pv_display>.
+XXX
 
 =back
 
-=head1 Acknowledgements
+=head1 Selected Bug Fixes
 
-Perl 5.35.10 represents approximately 4 weeks of development since Perl
-5.35.9 and contains approximately 15,000 lines of changes across 300 files
-from 26 authors.
+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>.
 
-Excluding auto-generated files, documentation and release tools, there were
-approximately 6,900 lines of changes to 190 .pm, .t, .c and .h files.
+[ List each fix as an =item entry ]
 
-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 5.35.10:
+=over 4
+
+=item *
 
-Bernd, Brad Barden, Chad Granum, cuishuang, Curtis Poe, Dagfinn Ilmari
-Mannsåker, Daniel Laügt, Felipe Gasper, Graham Knop, Hugo van der Sanden,
-James E Keenan, Karl Williamson, Leon Timmermans, Matthew Horsfall, Michiel
-Beijen, Nicholas Clark, Nicolas R, Paul Evans, Renee Baecker, Ricardo
-Signes, Richard Leach, Sawyer X, Sisyphus, Steve Hay, TAKAI Kousuke, Yves
-Orton.
+XXX
+
+=back
 
-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 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
+
+=back
+
+=head1 Errata From Previous Releases
+
+=over 4
+
+=item *
+
+XXX Add anything here that we forgot to add, or were mistaken about, in
+the perldelta of a previous release.
+
+=back
+
+=head1 Obituary
+
+XXX If any significant core contributor or member of the CPAN community has
+died, add a short obituary here.
+
+=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 v5.35.10..HEAD
 
 =head1 Reporting Bugs
 
diff --git a/vms/descrip_mms.template b/vms/descrip_mms.template
index 91d8fa5623..2f9d981432 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]perl53510delta.pod
+PERLDELTA_CURRENT = [.pod]perl53511delta.pod
 
 $(PERLDELTA_CURRENT) : [.pod]perldelta.pod
 	Copy/NoConfirm/Log $(MMS$SOURCE) $(PERLDELTA_CURRENT)
diff --git a/win32/GNUmakefile b/win32/GNUmakefile
index bb57d02e01..993e505eb8 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\perl53510delta.pod
+	copy ..\pod\perldelta.pod ..\pod\perl53511delta.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 \
-	    perl53510delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
+	    perl53511delta.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 a1f63344d2..370bd3eb26 100644
--- a/win32/Makefile
+++ b/win32/Makefile
@@ -1152,7 +1152,7 @@ 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\perl53510delta.pod
+	copy ..\pod\perldelta.pod ..\pod\perl53511delta.pod
 	cd ..\win32
 	$(PERLEXE) $(PL2BAT) $(UTILS)
 	$(MINIPERL) -I..\lib ..\autodoc.pl ..
@@ -1252,7 +1252,7 @@ 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 \
-	    perl53510delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
+	    perl53511delta.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 2f15233591..28a554c22f 100644
--- a/win32/pod.mak
+++ b/win32/pod.mak
@@ -68,6 +68,7 @@ POD = perl.pod	\
 	perl5341delta.pod	\
 	perl5350delta.pod	\
 	perl53510delta.pod	\
+	perl53511delta.pod	\
 	perl5351delta.pod	\
 	perl5352delta.pod	\
 	perl5353delta.pod	\
@@ -243,6 +244,7 @@ MAN = perl.man	\
 	perl5341delta.man	\
 	perl5350delta.man	\
 	perl53510delta.man	\
+	perl53511delta.man	\
 	perl5351delta.man	\
 	perl5352delta.man	\
 	perl5353delta.man	\
@@ -418,6 +420,7 @@ HTML = perl.html	\
 	perl5341delta.html	\
 	perl5350delta.html	\
 	perl53510delta.html	\
+	perl53511delta.html	\
 	perl5351delta.html	\
 	perl5352delta.html	\
 	perl5353delta.html	\
@@ -593,6 +596,7 @@ TEX = perl.tex	\
 	perl5341delta.tex	\
 	perl5350delta.tex	\
 	perl53510delta.tex	\
+	perl53511delta.tex	\
 	perl5351delta.tex	\
 	perl5352delta.tex	\
 	perl5353delta.tex	\