New Perldelta

11 files changed, 637 insertions, 41 deletions

diff --git a/MANIFEST b/MANIFEST
index b054110b65..b41aa29c96 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -5061,6 +5061,7 @@ pod/perl5275delta.pod		Perl changes in version 5.27.5
 pod/perl5276delta.pod		Perl changes in version 5.27.6
 pod/perl5277delta.pod		Perl changes in version 5.27.7
 pod/perl5278delta.pod		Perl changes in version 5.27.8
+pod/perl5279delta.pod		Perl changes in version 5.27.9
 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 d776e63f56..078f2b93ff 100755
--- a/Makefile.SH
+++ b/Makefile.SH
@@ -575,7 +575,7 @@ esac
 
 $spitshell >>$Makefile <<'!NO!SUBS!'
 
-perltoc_pod_prereqs = extra.pods pod/perl5279delta.pod pod/perlapi.pod pod/perlintern.pod pod/perlmodlib.pod pod/perluniprops.pod
+perltoc_pod_prereqs = extra.pods pod/perl52710delta.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
 
@@ -1125,9 +1125,9 @@ pod/perlintern.pod: $(MINIPERL_EXE) autodoc.pl embed.fnc
 pod/perlmodlib.pod: $(MINIPERL_EXE) pod/perlmodlib.PL MANIFEST
 	$(MINIPERL) pod/perlmodlib.PL -q
 
-pod/perl5279delta.pod: pod/perldelta.pod
-	$(RMS) pod/perl5279delta.pod
-	$(LNS) perldelta.pod pod/perl5279delta.pod
+pod/perl52710delta.pod: pod/perldelta.pod
+	$(RMS) pod/perl52710delta.pod
+	$(LNS) perldelta.pod pod/perl52710delta.pod
 
 extra.pods: $(MINIPERL_EXE)
 	-@test ! -f extra.pods || rm -f `cat extra.pods`
diff --git a/pod/.gitignore b/pod/.gitignore
index 8b137ad4b2..dc086678c6 100644
--- a/pod/.gitignore
+++ b/pod/.gitignore
@@ -50,7 +50,7 @@
 /roffitall
 
 # generated
-/perl5279delta.pod
+/perl52710delta.pod
 /perlapi.pod
 /perlintern.pod
 /perlmodlib.pod
diff --git a/pod/perl.pod b/pod/perl.pod
index 994d362905..e54d1206fd 100644
--- a/pod/perl.pod
+++ b/pod/perl.pod
@@ -181,6 +181,7 @@ aux h2ph h2xs perlbug pl2pm pod2html pod2man splain xsubpp
 
     perlhist		Perl history records
     perldelta		Perl changes since previous version
+    perl5279delta	Perl changes in version 5.27.9
     perl5278delta	Perl changes in version 5.27.8
     perl5277delta	Perl changes in version 5.27.7
     perl5276delta	Perl changes in version 5.27.6
diff --git a/pod/perl5279delta.pod b/pod/perl5279delta.pod
new file mode 100644
index 0000000000..1faf4e7b8d
--- /dev/null
+++ b/pod/perl5279delta.pod
@@ -0,0 +1,376 @@
+=encoding utf8
+
+=head1 NAME
+
+perl5279delta - what is new for perl v5.27.9
+
+=head1 DESCRIPTION
+
+This document describes differences between the 5.27.8 release and the 5.27.9
+release.
+
+If you are upgrading from an earlier release such as 5.27.7, first read
+L<perl5278delta>, which describes differences between 5.27.7 and 5.27.8.
+
+=head1 Core Enhancements
+
+=head2 New read-only predefined variable C<${^SAFE_LOCALES}>
+
+This variable is 1 if the Perl interpreter is operating in an
+environment where it is safe to use and change locales (see
+L<perllocale>.)  This variable is true when the perl is
+unthreaded, or compiled in a platform that supports thread-safe locale
+operation (see next item).
+
+=head2 Locales are now thread-safe on systems that support them
+
+These systems include Windows starting with Visual Studio 2005, and in
+POSIX 2008 systems.
+
+The implication is that you are now free to use locales and changes them
+in a threaded environment.  Your changes affect only your thread.
+See L<perllocale/Multi-threaded operation>
+
+=head2 Script runs now are specified with a different syntax
+
+This isn't really an enhancement, but is being put in this category
+because it changes an enhancement from 5.27.8, and there is a new
+abbreviated form for it.  The syntax is now either of:
+
+ (*script_run:...)
+ (*sr:...)
+
+Previously a C<"+"> was used instead of the C<"*">.
+
+=head2 There is a new form for script runs which combines with
+C<(?E<gt>...)> (or C<*atomic:...)>)
+
+C<(*asr:...> is an easier way to write C<(*sr:(?E<gt>...))>,
+which is expected to be a commonly used idiom.
+C<(*atomic_script_run:...> is also available.  See
+L<perlre/Script Runs>.
+
+=head2 Experimentally, there are now alphabetic synonyms for some
+regular expression assertions
+
+If you find it difficult to remember how to write certain of the pattern
+assertions, there are now alphabetic synonyms.
+
+ CURRENT                NEW SYNONYMS
+ ------                 ------------
+ (?=...)        (*pla:...) or (*positive_lookahead:...)
+ (?!...)        (*nla:...) or (*negative_lookahead:...)
+ (?<=...)       (*plb:...) or (*positive_lookbehind:...)
+ (?<!...)       (*nlb:...) or (*negative_lookbehind:...)
+ (?>...)        (*atomic:...)
+
+These are considered experimental, so using any of these will raise
+(unless turned off) a warning in the C<experimental::alpha_assertions>
+category.
+
+=head1 Performance Enhancements
+
+=over 4
+
+=item *
+
+Various optimizations have been applied to matching regular expression
+patterns, so under the right circumstances, significant performance
+gains may be noticed.  But in an application with many varied patterns,
+little overall improvement likely will be seen.
+
+=item *
+
+Other optimizations have been applied to UTF-8 handling, but these are
+not typically a major factor in most applications.
+
+=back
+
+=head1 Modules and Pragmata
+
+=head2 Updated Modules and Pragmata
+
+=over 4
+
+=item *
+
+L<bignum> has been upgraded from version 0.47 to 0.49.
+
+=item *
+
+L<Carp> has been upgraded from version 1.45 to 1.46.
+
+=item *
+
+L<Devel::PPPort> has been upgraded from version 3.38 to 3.39.
+
+=item *
+
+L<Encode> has been upgraded from version 2.94 to 2.96.
+
+=item *
+
+L<encoding> has been upgraded from version 2.21 to 2.22.
+
+=item *
+
+L<Errno> has been upgraded from version 1.28 to 1.29.
+
+=item *
+
+L<ExtUtils::MakeMaker> has been upgraded from version 7.30 to 7.32.
+
+=item *
+
+L<ExtUtils::ParseXS> has been upgraded from version 3.36 to 3.38.
+
+=item *
+
+L<ExtUtils::Typemaps> has been upgraded from version 3.37 to 3.38.
+
+=item *
+
+L<File::Spec> has been upgraded from version 3.72 to 3.74.
+
+=item *
+
+L<if> has been upgraded from version 0.0607 to 0.0608.
+
+=item *
+
+L<IPC::Cmd> has been upgraded from version 0.98 to 1.00.
+
+=item *
+
+L<Module::CoreList> has been upgraded from version 5.20180120 to 5.20180220.
+
+=item *
+
+L<mro> has been upgraded from version 1.21 to 1.22.
+
+=item *
+
+L<PerlIO::encoding> has been upgraded from version 0.25 to 0.26.
+
+=item *
+
+L<POSIX> has been upgraded from version 1.81 to 1.82.
+
+=item *
+
+L<Storable> has been upgraded from version 2.65 to 3.06.
+
+=item *
+
+L<Test::Simple> has been upgraded from version 1.302120 to 1.302122.
+
+=item *
+
+L<threads> has been upgraded from version 2.21 to 2.22.
+
+=item *
+
+L<Time::HiRes> has been upgraded from version 1.9752 to 1.9753.
+
+=item *
+
+L<warnings> has been upgraded from version 1.40 to 1.41.
+
+=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.
+
+=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, send email
+to L<perlbug@perl.org|mailto:perlbug@perl.org>.
+
+=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 Warnings
+
+=over 4
+
+=item *
+
+L<Locale '%s' contains (at least) the following characters which have
+non-standard meanings: %s  The Perl program will use the standard
+meanings|perldiag/"Locale '%s' contains (at least) the following
+characters which have non-standard meanings: %s  The Perl program will
+use the standard meanings">.
+
+=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 *
+
+F<harness> no longer waits for 30 seconds when running
+F<t/io/openpid.t>.  [perl #121028][perl #132867]
+
+=back
+
+=head1 Platform Support
+
+=head2 New Platforms
+
+=over 4
+
+
+=item VMS
+
+CRTL features can now be set by embedders before invoking Perl by using the
+C<decc$feature_set> and C<decc$feature_set_value> functions.  Previously any attempt
+to set features after image initialization were ignored.
+
+=back
+
+=head1 Internal Changes
+
+=over 4
+
+=item *
+
+A new compiler C<#define>, C<dTHX_DEBUGGING>. has been added.  This is
+useful for XS or C code that only need the thread context because their
+debugging statements that get compiled only under C<-DDEBUGGING> need
+one.
+
+=item *
+
+A new API function L<perlapi/Perl_setlocale> has been added.
+
+=item *
+
+L<perlapi/sync_locale> has been revised to return a boolean as to
+whether the system was using the global locale or not.
+
+=item *
+
+A new kind of magic scalar, called a "nonelem" scalar, has been introduced.
+It is stored in an array to denote a nonexistent element, whenever such an
+element is accessed in a potential lvalue context.  It replaces the
+existing "defelem" (deferred element) magic wherever this is possible,
+being significantly more efficient.  This means that
+C<some_sub($sparse_array[$nonelem])> no longer has to create a new magic
+defelem scalar each time, as long as the element is within the array.
+
+It partially fixes the rare bug of deferred elements getting out of synch
+with their arrays when the array is shifted or unshifted.  [perl #132729]
+
+=back
+
+=head1 Selected Bug Fixes
+
+=over 4
+
+=item *
+
+Failures while compiling code within other constructs, such as with
+string interpolation and the right part of C<s///e> now cause
+compilation to abort earlier.
+
+Previously compilation could continue in order to report other errors,
+but the failed sub-parse could leave partly parsed constructs on the
+parser shift-reduce stack, confusing the parser, leading to perl
+crashes. [perl #125351]
+
+=item *
+
+On threaded perls where the decimal point (radix) character is not a
+dot, it has been possible for a race to occur between threads when one
+needs to use the real radix character.  This has now been fixed by use
+of a mutex on systems without thread-safe locales, and the problem just
+doesn't come up on those with thread-safe locales.
+
+=back
+
+=head1 Acknowledgements
+
+Perl 5.27.9 represents approximately 5 weeks of development since Perl
+5.27.8 and contains approximately 29,000 lines of changes across 360 files
+from 26 authors.
+
+Excluding auto-generated files, documentation and release tools, there were
+approximately 13,000 lines of changes to 250 .pm, .t, .c and .h files.
+
+Perl continues to flourish into its third decade thanks to a vibrant
+community of users and developers. The following people are known to have
+contributed the improvements that became Perl 5.27.9:
+
+, Aaron Crane, Abigail, Chris 'BinGOs' Williams, Craig A. Berry, Dagfinn
+Ilmari Mannsåker, David Mitchell, Father Chrysostomos, George Hartzell,
+H.Merijn Brand, Hugo van der Sanden, James E Keenan, Jerry D. Hedden, Karl
+Williamson, Matthew Horsfall, Pali, Reini Urban, Sawyer X, Slaven Rezic,
+Steve Hay, Todd Rinaldo, Tomasz Konojacki, Tom Wyant, Tony Cook, Yves Orton,
+Zefram.
+
+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://rt.perl.org/> .  There may also be information at
+L<http://www.perl.org/> , the Perl Home Page.
+
+If you believe you have an unreported bug, please run the L<perlbug> program
+included with your release.  Be sure to trim your bug down to a tiny but
+sufficient test case.  Your bug report, along with the output of C<perl -V>,
+will be sent off to perlbug@perl.org to be analysed by the Perl porting team.
+
+If the bug you are reporting has security implications which make it
+inappropriate to send to a publicly archived mailing list, 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 7dd7d29d9b..22e5722b75 100644
--- a/pod/perldelta.pod
+++ b/pod/perldelta.pod
@@ -2,15 +2,22 @@
 
 =head1 NAME
 
-perldelta - what is new for perl v5.27.9
+[ 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 v5.27.10
 
 =head1 DESCRIPTION
 
-This document describes differences between the 5.27.8 release and the 5.27.9
+This document describes differences between the 5.27.9 release and the 5.27.10
 release.
 
-If you are upgrading from an earlier release such as 5.27.7, first read
-L<perl5278delta>, which describes differences between 5.27.7 and 5.27.8.
+If you are upgrading from an earlier release such as 5.27.8, first read
+L<perl5279delta>, which describes differences between 5.27.8 and 5.27.9.
+
+=head1 Notice
+
+XXX Any important notices here
 
 =head1 Core Enhancements
 
@@ -68,6 +75,57 @@ These are considered experimental, so using any of these will raise
 (unless turned off) a warning in the C<experimental::alpha_assertions>
 category.
 
+=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.
+
+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.
+
+=over
+
+=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
 
 =over 4
@@ -88,6 +146,30 @@ not typically a major factor in most applications.
 
 =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.)
+
+[ Within each section, list entries as an =item entry ]
+
+=head2 New Modules and Pragmata
+
+=over 4
+
+=item *
+
+XXX Remove this section if not applicable.
+
+=back
+
 =head2 Updated Modules and Pragmata
 
 =over 4
@@ -193,8 +275,28 @@ corruption.  [perl #132854]
 
 =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
 
@@ -202,14 +304,46 @@ We have attempted to update the documentation to reflect the changes
 listed in this document.  If you find any we have missed, send email
 to L<perlbug@perl.org|mailto:perlbug@perl.org>.
 
+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 *
+
+XXX Description of the change here
+
+=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>.
 
+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
+
+=item *
+
+XXX L<message|perldiag/"message">
+
+=back
+
 =head3 New Warnings
 
 =over 4
@@ -224,6 +358,54 @@ use the standard meanings">.
 
 =back
 
+=head2 Changes to Existing Diagnostics
+
+XXX Changes (i.e. rewording) of diagnostic messages go here
+
+=over 4
+
+=item *
+
+XXX Describe change here
+
+=back
+
+=head1 Utility Changes
+
+XXX Changes to installed programs such as F<perlbug> 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
 
 Tests were added and changed to reflect the other additions and
@@ -245,7 +427,6 @@ F<t/io/openpid.t>.  [perl #121028][perl #132867]
 
 =over 4
 
-
 =item VMS
 
 CRTL features can now be set by embedders before invoking Perl by using the
@@ -254,6 +435,33 @@ to set features after image initialization were ignored.
 
 =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
 
 =over 4
@@ -314,37 +522,43 @@ doesn't come up on those with thread-safe locales.
 
 =back
 
-=head1 Acknowledgements
+=head1 Known Problems
 
-Perl 5.27.9 represents approximately 5 weeks of development since Perl
-5.27.8 and contains approximately 29,000 lines of changes across 360 files
-from 26 authors.
+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.
 
-Excluding auto-generated files, documentation and release tools, there were
-approximately 13,000 lines of changes to 250 .pm, .t, .c and .h files.
+[ List each fix as an =item entry ]
 
-Perl continues to flourish into its third decade thanks to a vibrant
-community of users and developers. The following people are known to have
-contributed the improvements that became Perl 5.27.9:
+=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.
 
-, Aaron Crane, Abigail, Chris 'BinGOs' Williams, Craig A. Berry, Dagfinn
-Ilmari Mannsåker, David Mitchell, Father Chrysostomos, George Hartzell,
-H.Merijn Brand, Hugo van der Sanden, James E Keenan, Jerry D. Hedden, Karl
-Williamson, Matthew Horsfall, Pali, Reini Urban, Sawyer X, Slaven Rezic,
-Steve Hay, Todd Rinaldo, Tomasz Konojacki, Tom Wyant, Tony Cook, Yves Orton,
-Zefram.
+=back
+
+=head1 Obituary
 
-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 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 v5.27.9..HEAD
 
 =head1 Reporting Bugs
 
diff --git a/vms/descrip_mms.template b/vms/descrip_mms.template
index 891ad01ed0..366f7ff854 100644
--- a/vms/descrip_mms.template
+++ b/vms/descrip_mms.template
@@ -307,7 +307,7 @@ utils : $(utils1) $(utils2) $(utils3) $(utils4) $(utils5)
 extra.pods : miniperl
 	@ @extra_pods.com
 
-PERLDELTA_CURRENT = [.pod]perl5279delta.pod
+PERLDELTA_CURRENT = [.pod]perl52710delta.pod
 
 $(PERLDELTA_CURRENT) : [.pod]perldelta.pod
 	Copy/NoConfirm/Log $(MMS$SOURCE) $(PERLDELTA_CURRENT)
diff --git a/win32/GNUmakefile b/win32/GNUmakefile
index c81a825642..5330ba5da7 100644
--- a/win32/GNUmakefile
+++ b/win32/GNUmakefile
@@ -1663,7 +1663,7 @@ 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\perl5279delta.pod
+	copy ..\pod\perldelta.pod ..\pod\perl52710delta.pod
 	$(MINIPERL) -I..\lib $(PL2BAT) $(UTILS)
 	$(MINIPERL) -I..\lib ..\autodoc.pl ..
 	$(MINIPERL) -I..\lib ..\pod\perlmodlib.PL -q ..
@@ -1760,7 +1760,7 @@ 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 \
-	    perl5279delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
+	    perl52710delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
 	    perlapi.pod perlbs2000.pod perlce.pod perlcn.pod perlcygwin.pod \
 	    perldos.pod perlfreebsd.pod perlhaiku.pod perlhpux.pod \
 	    perlhurd.pod perlintern.pod perlirix.pod perljp.pod perlko.pod \
diff --git a/win32/Makefile b/win32/Makefile
index 108022990b..9abce4efc9 100644
--- a/win32/Makefile
+++ b/win32/Makefile
@@ -1282,7 +1282,7 @@ 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\perl5279delta.pod
+	copy ..\pod\perldelta.pod ..\pod\perl52710delta.pod
 	cd ..\win32
 	$(PERLEXE) $(PL2BAT) $(UTILS)
 	$(MINIPERL) -I..\lib ..\autodoc.pl ..
@@ -1382,7 +1382,7 @@ 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 \
-	    perl5279delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
+	    perl52710delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
 	    perlapi.pod perlbs2000.pod perlce.pod perlcn.pod perlcygwin.pod \
 	    perldos.pod perlfreebsd.pod perlhaiku.pod perlhpux.pod \
 	    perlhurd.pod perlintern.pod perlirix.pod perljp.pod perlko.pod \
diff --git a/win32/makefile.mk b/win32/makefile.mk
index 78f2d1fbb1..2a303af833 100644
--- a/win32/makefile.mk
+++ b/win32/makefile.mk
@@ -1606,7 +1606,7 @@ 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\perl5279delta.pod
+	copy ..\pod\perldelta.pod ..\pod\perl52710delta.pod
 	$(MINIPERL) -I..\lib $(PL2BAT) $(UTILS)
 	$(MINIPERL) -I..\lib ..\autodoc.pl ..
 	$(MINIPERL) -I..\lib ..\pod\perlmodlib.PL -q ..
@@ -1705,7 +1705,7 @@ 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 \
-	    perl5279delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
+	    perl52710delta.pod perlaix.pod perlamiga.pod perlandroid.pod \
 	    perlapi.pod perlbs2000.pod perlce.pod perlcn.pod perlcygwin.pod \
 	    perldos.pod perlfreebsd.pod perlhaiku.pod perlhpux.pod \
 	    perlhurd.pod perlintern.pod perlirix.pod perljp.pod perlko.pod \
diff --git a/win32/pod.mak b/win32/pod.mak
index 83c1d3144b..b4abde7d7e 100644
--- a/win32/pod.mak
+++ b/win32/pod.mak
@@ -52,6 +52,7 @@ POD = perl.pod	\
 	perl5260delta.pod	\
 	perl5261delta.pod	\
 	perl5270delta.pod	\
+	perl52710delta.pod	\
 	perl5271delta.pod	\
 	perl5272delta.pod	\
 	perl5273delta.pod	\
@@ -208,6 +209,7 @@ MAN = perl.man	\
 	perl5260delta.man	\
 	perl5261delta.man	\
 	perl5270delta.man	\
+	perl52710delta.man	\
 	perl5271delta.man	\
 	perl5272delta.man	\
 	perl5273delta.man	\
@@ -363,6 +365,7 @@ HTML = perl.html	\
 	perl5260delta.html	\
 	perl5261delta.html	\
 	perl5270delta.html	\
+	perl52710delta.html	\
 	perl5271delta.html	\
 	perl5272delta.html	\
 	perl5273delta.html	\
@@ -519,6 +522,7 @@ TEX = perl.tex	\
 	perl5260delta.tex	\
 	perl5261delta.tex	\
 	perl5270delta.tex	\
+	perl52710delta.tex	\
 	perl5271delta.tex	\
 	perl5272delta.tex	\
 	perl5273delta.tex	\