--- /dev/null
+=encoding utf8
+
+=head1 NAME
+
+perl5272delta - what is new for perl v5.27.2
+
+=head1 DESCRIPTION
+
+This document describes differences between the 5.27.1 release and the 5.27.2
+release.
+
+If you are upgrading from an earlier release such as 5.27.0, first read
+L<perl5271delta>, which describes differences between 5.27.0 and 5.27.1.
+
+=head1 Core Enhancements
+
+=head2 Unicode 10.0 is supported
+
+A list of changes is at
+L<http://www.unicode.org/versions/Unicode10.0.0>.
+
+=head1 Modules and Pragmata
+
+=head2 Updated Modules and Pragmata
+
+=over 4
+
+=item *
+
+L<arybase> has been upgraded from version 0.12 to 0.13.
+
+=item *
+
+L<Carp> has been upgraded from version 1.42 to 1.43.
+
+=item *
+
+L<Encode> has been upgraded from version 2.88 to 2.92.
+
+=item *
+
+L<encoding> has been upgraded from version 2.19 to 2.20.
+
+=item *
+
+L<ExtUtils::CBuilder> has been upgraded from version 0.280225 to 0.280228.
+
+=item *
+
+L<feature> has been upgraded from version 1.48 to 1.49.
+
+=item *
+
+L<File::Glob> has been upgraded from version 1.28 to 1.29.
+
+=item *
+
+L<File::Spec> and L<Cwd> have been upgraded from version 3.67 to 3.68.
+
+=item *
+
+L<List::Util> has been upgraded from version 1.46_02 to 1.48.
+
+=item *
+
+L<Math::BigRat> has been upgraded from version 0.2611 to 0.2613.
+
+=item *
+
+L<Module::CoreList> has been upgraded from version 5.20170621 to 5.20170720.
+
+=item *
+
+L<Opcode> has been upgraded from version 1.39 to 1.40.
+
+=item *
+
+L<PerlIO::scalar> has been upgraded from version 0.27 to 0.29.
+
+=item *
+
+L<POSIX> has been upgraded from version 1.76 to 1.77.
+
+=item *
+
+L<re> has been upgraded from version 0.34 to 0.35.
+
+=item *
+
+L<Scalar::Util> has been upgraded from version 1.46_02 to 1.48.
+
+=item *
+
+L<Time::HiRes> has been upgraded from version 1.9741 to 1.9743.
+
+=item *
+
+L<Time::Piece> has been upgraded from version 1.31 to 1.3201.
+
+=back
+
+=head1 Selected Bug Fixes
+
+=over 4
+
+=item *
+
+List assignment (C<aassign>) could in some rare cases allocate an
+entry on the mortal stack and leave the entry uninitialized. [perl
+#131570]
+
+=item *
+
+Attempting to apply an attribute to an C<our> variable where a
+function of that name already exists could result in a NULL pointer
+being supplied where an SV was expected, crashing perl. [perl
+#131597]
+
+=item *
+
+C<split ' '> now correctly handles the argument being split when in the
+scope of the L<< C<unicode_strings>|feature/"The 'unicode_strings' feature"
+>> feature. Previously, when a string using the single-byte internal
+representation contained characters that are whitespace by Unicode rules but
+not by ASCII rules, it treated those characters as part of fields rather
+than as field separators. [perl #130907]
+
+=item *
+
+Several built-in functions previously had bugs that could cause them to
+write to the internal stack without allocating room for the item being
+written. In rare situations, this could have led to a crash. These bugs have
+now been fixed, and if any similar bugs are introduced in future, they will
+be detected automatically in debugging builds.
+
+=item *
+
+Using a symbolic ref with postderef syntax as the key in a hash lookup was
+yielding an assertion failure on debugging builds. [perl #131627]
+
+=item *
+
+Array and hash variables whose names begin with a caret now admit indexing
+inside their curlies when interpolated into strings, as in C<<
+"${^CAPTURE[0]}" >> to index C<@{^CAPTURE}>. [perl #131664]
+
+=back
+
+=head1 Acknowledgements
+
+Perl 5.27.2 represents approximately 4 weeks of development since Perl 5.27.1
+and contains approximately 26,000 lines of changes across 290 files from 18
+authors.
+
+Excluding auto-generated files, documentation and release tools, there were
+approximately 9,700 lines of changes to 150 .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 5.27.2:
+
+Aaron Crane, Alberto Simões, Chris 'BinGOs' Williams, Dagfinn Ilmari
+Mannsåker, David Mitchell, E. Choroba, Eric Herman, Father Chrysostomos, James
+E Keenan, Karl Williamson, Lukas Mai, Ricardo Signes, Sawyer X, Steve Hay, Tony
+Cook, Vitali Peil, 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
=head1 NAME
-perldelta - what is new for perl v5.27.2
+[ 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 v5.27.3
=head1 DESCRIPTION
-This document describes differences between the 5.27.1 release and the 5.27.2
+This document describes differences between the 5.27.2 release and the 5.27.3
release.
-If you are upgrading from an earlier release such as 5.27.0, first read
-L<perl5271delta>, which describes differences between 5.27.0 and 5.27.1.
+If you are upgrading from an earlier release such as 5.27.1, first read
+L<perl5272delta>, which describes differences between 5.27.1 and 5.27.2.
+
+=head1 Notice
+
+XXX Any important notices here
=head1 Core Enhancements
-=head2 Unicode 10.0 is supported
+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.
-A list of changes is at
-L<http://www.unicode.org/versions/Unicode10.0.0>.
+[ 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.
+
+[ 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 inapplicable.
+
+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
+
+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<arybase> has been upgraded from version 0.12 to 0.13.
+XXX
-=item *
+=back
-L<Carp> has been upgraded from version 1.42 to 1.43.
+=head1 Modules and Pragmata
-=item *
+XXX All changes to installed files in F<cpan/>, F<dist/>, F<ext/> and F<lib/>
+go here. If Module::CoreList is updated, generate an initial draft of the
+following sections using F<Porting/corelist-perldelta.pl>. A paragraph summary
+for important changes should then be added by hand. In an ideal world,
+dual-life modules would have a F<Changes> file that could be cribbed.
-L<Encode> has been upgraded from version 2.88 to 2.92.
+The list of new and updated modules is modified automatically as part of
+preparing a Perl release, so the only reason to manually add entries here is if
+you're summarising the important changes in the module update. (Also, if the
+manually-added details don't match the automatically-generated ones, the
+release manager will have to investigate the situation carefully.)
-=item *
+[ Within each section, list entries as an =item entry ]
-L<encoding> has been upgraded from version 2.19 to 2.20.
+=head2 New Modules and Pragmata
+
+=over 4
=item *
-L<ExtUtils::CBuilder> has been upgraded from version 0.280225 to 0.280228.
+XXX
-=item *
+=back
+
+=head2 Updated Modules and Pragmata
-L<feature> has been upgraded from version 1.48 to 1.49.
+=over 4
=item *
-L<File::Glob> has been upgraded from version 1.28 to 1.29.
+L<XXX> has been upgraded from version A.xx to B.yy.
-=item *
+=back
-L<File::Spec> and L<Cwd> have been upgraded from version 3.67 to 3.68.
+=head2 Removed Modules and Pragmata
+
+=over 4
=item *
-L<List::Util> has been upgraded from version 1.46_02 to 1.48.
+XXX
-=item *
+=back
-L<Math::BigRat> has been upgraded from version 0.2611 to 0.2613.
+=head1 Documentation
-=item *
+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>.
-L<Module::CoreList> has been upgraded from version 5.20170621 to 5.20170720.
+=head2 New Documentation
-=item *
+XXX Changes which create B<new> files in F<pod/> go here.
-L<Opcode> has been upgraded from version 1.39 to 1.40.
+=head3 L<XXX>
-=item *
+XXX Description of the purpose of the new file here
-L<PerlIO::scalar> has been upgraded from version 0.27 to 0.29.
+=head2 Changes to Existing Documentation
-=item *
+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>.
-L<POSIX> has been upgraded from version 1.76 to 1.77.
+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<re> has been upgraded from version 0.34 to 0.35.
+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 *
-L<Scalar::Util> has been upgraded from version 1.46_02 to 1.48.
+XXX L<message|perldiag/"message">
+
+=back
+
+=head3 New Warnings
+
+=over 4
=item *
-L<Time::HiRes> has been upgraded from version 1.9741 to 1.9743.
+XXX L<message|perldiag/"message">
+
+=back
+
+=head2 Changes to Existing Diagnostics
+
+XXX Changes (i.e. rewording) of diagnostic messages go here
+
+=over 4
=item *
-L<Time::Piece> has been upgraded from version 1.31 to 1.3201.
+XXX Describe change here
=back
-=head1 Selected Bug Fixes
+=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 *
-List assignment (C<aassign>) could in some rare cases allocate an
-entry on the mortal stack and leave the entry uninitialized. [perl
-#131570]
+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 *
-Attempting to apply an attribute to an C<our> variable where a
-function of that name already exists could result in a NULL pointer
-being supplied where an SV was expected, crashing perl. [perl
-#131597]
+XXX
+
+=back
+
+=head1 Testing
+
+XXX Any significant changes to the testing of a freshly built perl should be
+listed here. Changes which create B<new> files in F<t/> go here as do any
+large changes to the testing harness (e.g. when parallel testing was added).
+Changes to existing files in F<t/> aren't worth summarizing, although the bugs
+that they represent may be covered elsewhere.
+
+XXX If there were no significant test changes, say this:
+
+Tests were added and changed to reflect the other additions and changes
+in this release.
+
+XXX If instead there were significant changes, say this:
+
+Tests were added and changed to reflect the other additions and
+changes in this release. Furthermore, these significant changes were
+made:
+
+[ List each test improvement as an =item entry ]
+
+=over 4
=item *
-C<split ' '> now correctly handles the argument being split when in the
-scope of the L<< C<unicode_strings>|feature/"The 'unicode_strings' feature"
->> feature. Previously, when a string using the single-byte internal
-representation contained characters that are whitespace by Unicode rules but
-not by ASCII rules, it treated those characters as part of fields rather
-than as field separators. [perl #130907]
+XXX
+
+=back
+
+=head1 Platform Support
+
+XXX Any changes to platform support should be listed in the sections below.
+
+[ Within the sections, list each platform as an =item entry with specific
+changes as paragraphs below it. ]
+
+=head2 New Platforms
+
+XXX List any platforms that this version of perl compiles on, that previous
+versions did not. These will either be enabled by new files in the F<hints/>
+directories, or new subdirectories and F<README> files at the top level of the
+source tree.
+
+=over 4
+
+=item XXX-some-platform
+
+XXX
+
+=back
+
+=head2 Discontinued Platforms
+
+XXX List any platforms that this version of perl no longer compiles on.
+
+=over 4
+
+=item XXX-some-platform
+
+XXX
+
+=back
+
+=head2 Platform-Specific Notes
+
+XXX List any changes for specific platforms. This could include configuration
+and compilation changes or changes in portability/compatibility. However,
+changes within modules for platforms should generally be listed in the
+L</Modules and Pragmata> section.
+
+=over 4
+
+=item XXX-some-platform
+
+XXX
+
+=back
+
+=head1 Internal Changes
+
+XXX Changes which affect the interface available to C<XS> code go here. Other
+significant internal changes for future core maintainers should be noted as
+well.
+
+[ List each change as an =item entry ]
+
+=over 4
=item *
-Several built-in functions previously had bugs that could cause them to
-write to the internal stack without allocating room for the item being
-written. In rare situations, this could have led to a crash. These bugs have
-now been fixed, and if any similar bugs are introduced in future, they will
-be detected automatically in debugging builds.
+XXX
+
+=back
+
+=head1 Selected Bug Fixes
+
+XXX Important bug fixes in the core language are summarized here. Bug fixes in
+files in F<ext/> and F<lib/> are best summarized in L</Modules and Pragmata>.
+
+[ List each fix as an =item entry ]
+
+=over 4
=item *
-Using a symbolic ref with postderef syntax as the key in a hash lookup was
-yielding an assertion failure on debugging builds. [perl #131627]
+XXX
+
+=back
+
+=head1 Known Problems
+
+XXX Descriptions of platform agnostic bugs we know we can't fix go here. Any
+tests that had to be C<TODO>ed for the release would be noted here. Unfixed
+platform specific bugs also go here.
+
+[ List each fix as an =item entry ]
+
+=over 4
=item *
-Array and hash variables whose names begin with a caret now admit indexing
-inside their curlies when interpolated into strings, as in C<<
-"${^CAPTURE[0]}" >> to index C<@{^CAPTURE}>. [perl #131664]
+XXX
=back
-=head1 Acknowledgements
+=head1 Errata From Previous Releases
-Perl 5.27.2 represents approximately 4 weeks of development since Perl 5.27.1
-and contains approximately 26,000 lines of changes across 290 files from 18
-authors.
+=over 4
-Excluding auto-generated files, documentation and release tools, there were
-approximately 9,700 lines of changes to 150 .pm, .t, .c and .h files.
+=item *
-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 5.27.2:
+XXX Add anything here that we forgot to add, or were mistaken about, in
+the perldelta of a previous release.
-Aaron Crane, Alberto Simões, Chris 'BinGOs' Williams, Dagfinn Ilmari
-Mannsåker, David Mitchell, E. Choroba, Eric Herman, Father Chrysostomos, James
-E Keenan, Karl Williamson, Lukas Mai, Ricardo Signes, Sawyer X, Steve Hay, Tony
-Cook, Vitali Peil, 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 has died, we've added 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 v5.25.5..HEAD
=head1 Reporting Bugs
https://perl5.git.perl.org / perl5.git / commitdiff