--- /dev/null
+=encoding utf8
+
+=head1 NAME
+
+perl5294delta - what is new for perl v5.29.4
+
+=head1 DESCRIPTION
+
+This document describes differences between the 5.29.3 release and the 5.29.4
+release.
+
+If you are upgrading from an earlier release such as 5.29.2, first read
+L<perl5293delta>, which describes differences between 5.29.2 and 5.29.3.
+
+=head1 Core Enhancements
+
+=head2 The maximum number of times a pattern can match has been doubled
+to 65535
+
+This means if you specify C<qr/a+/> that there can be anywhere from 1
+through 65535 C<"a">'s in a row, instead of 32267 as previously.
+
+=head1 Incompatible Changes
+
+=head2 Assigning non-zero to C<$[> is fatal
+
+Setting L<< C<$[>|perlvar/$[ >> to a non-zero value has been deprecated since
+Perl 5.12 and now throws a fatal error.
+See L<<< perldeprecation/Assigning non-zero to C<< $[ >> is fatal >>>.
+
+=head2 Previously deprecated sysread()/syswrite() on :utf8 handles now fatal
+
+Calling sysread(), syswrite(), send() or recv() on a C<:utf8> handle,
+whether applied explicitly or implicitly, is now fatal. This was
+deprecated in perl 5.24.
+
+There were two problems with calling these functions on C<:utf8>
+handles:
+
+=over
+
+=item *
+
+All four functions only paid attention to the C<:utf8> flag. Other
+layers were completely ignored, so a handle with
+C<:encoding(UTF-16LE)> layer would be treated as UTF-8. Other layers,
+such as compression are completely ignored with or without the
+C<:utf8> flag.
+
+=item *
+
+sysread() and recv() would read from the handle, skipping any
+validation by the layers, and do no validation of their own. This
+could lead to invalidly encoded perl scalars.
+
+=back
+
+[perl #125760]
+
+=head2 my() in false conditional prohibited
+
+Declarations such as C<my $x if 0> are no longer permitted.
+
+[perl #133543]
+
+=head2 Fatalize $* and $#
+
+These special variables, long deprecated, now throw exceptions when used.
+
+[perl #133583]
+
+=head2 Fatalize unqualified use of dump()
+
+The C<dump()> function, long discouraged, may no longer be used unless it is
+fully qualified, I<i.e.>, C<CORE::dump()>.
+
+[perl #133584]
+
+=head2 Remove File::Glob::glob()
+
+The C<File::Glob::glob()> function, long deprecated, has been removed and now
+throws an exception which advises use of C<File::Glob::bsd_glob()> instead.
+
+[perl #133586]
+
+=head1 Modules and Pragmata
+
+=head2 Updated Modules and Pragmata
+
+=over 4
+
+=item *
+
+L<B> has been upgraded from version 1.74 to 1.75.
+
+=item *
+
+L<B::Concise> has been upgraded from version 1.003 to 1.004.
+
+=item *
+
+L<B::Deparse> has been upgraded from version 1.48 to 1.49.
+
+=item *
+
+L<bignum> has been upgraded from version 0.50 to 0.51.
+
+=item *
+
+L<bytes> has been upgraded from version 1.06 to 1.07.
+
+=item *
+
+L<CPAN> has been upgraded from version 2.20-TRIAL to 2.21-TRIAL.
+
+=item *
+
+L<Devel::Peek> has been upgraded from version 1.27 to 1.28.
+
+=item *
+
+L<feature> has been upgraded from version 1.53 to 1.54.
+
+=item *
+
+L<File::Copy> has been upgraded from version 2.33 to 2.34.
+
+=item *
+
+L<File::Glob> has been upgraded from version 1.31 to 1.32.
+
+=item *
+
+L<Module::CoreList> has been upgraded from version 5.20180920 to 5.20181020.
+
+=item *
+
+L<sigtrap> has been upgraded from version 1.08 to 1.09.
+
+=item *
+
+L<Unicode::UCD> has been upgraded from version 0.71 to 0.72.
+
+=item *
+
+L<vars> has been upgraded from version 1.04 to 1.05.
+
+C<vars.pm> no longer disables non-vars strict when checking if strict
+vars is enabled. [perl #130674]
+
+=back
+
+=head2 Removed Modules and Pragmata
+
+=over 4
+
+=item *
+
+B::Debug is no longer distributed with the core distribution. It remains
+available on CPAN.
+
+=back
+
+=head1 Internal Changes
+
+=over 4
+
+=item *
+
+The sizing pass has been eliminated from the regular expression
+compiler. An extra pass may instead be needed in some cases to count
+the number of parenthetical capture groups.
+
+=back
+
+=head1 Selected Bug Fixes
+
+=over 4
+
+=item *
+
+C<pack "u", "invalid uuencoding"> now properly NUL terminates the
+zero-length SV produced. [perl #132655]
+
+=item *
+
+Improve the debugging output for calloc() calls with C<-Dm>. [perl #133439]
+
+=item *
+
+Regexp script runs were failing to permit ASCII digits in some cases.
+[perl #133547]
+
+=item *
+
+On Unix-like systems supporting a platform-specific technique for
+determining L<< C<$^X>|perlvar/$^X >>, Perl failed to fall back to the
+generic technique when the platform-specific one fails (for example, a Linux
+system with /proc not mounted). This was a regression in Perl 5.28.0.
+[perl #133573]
+
+=back
+
+=head1 Acknowledgements
+
+Perl 5.29.4 represents approximately 4 weeks of development since Perl
+5.29.3 and contains approximately 8,400 lines of changes across 180 files
+from 17 authors.
+
+Excluding auto-generated files, documentation and release tools, there were
+approximately 6,300 lines of changes to 110 .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 5.29.4:
+
+Aaron Crane, Alexandr Savca, Andreas König, Chris 'BinGOs' Williams, Craig
+A. Berry, Dagfinn Ilmari Mannsåker, David Mitchell, Eugen Konkov, James E
+Keenan, John SJ Anderson, Karl Williamson, Matthias Bethke, Nicolas R.,
+Sisyphus, Slaven Rezic, Tomasz Konojacki, Tony Cook.
+
+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 v5.29.4
+[ 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 v5.29.5
=head1 DESCRIPTION
-This document describes differences between the 5.29.3 release and the 5.29.4
+This document describes differences between the 5.29.4 release and the 5.29.5
release.
-If you are upgrading from an earlier release such as 5.29.2, first read
-L<perl5293delta>, which describes differences between 5.29.2 and 5.29.3.
+If you are upgrading from an earlier release such as 5.29.3, first read
+L<perl5294delta>, which describes differences between 5.29.3 and 5.29.4.
+
+=head1 Notice
+
+XXX Any important notices here
=head1 Core Enhancements
-=head2 The maximum number of times a pattern can match has been doubled
-to 65535
+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 ]
-This means if you specify C<qr/a+/> that there can be anywhere from 1
-through 65535 C<"a">'s in a row, instead of 32267 as previously.
+=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
-=head2 Assigning non-zero to C<$[> is fatal
+XXX For a release on a stable branch, this section aspires to be:
-Setting L<< C<$[>|perlvar/$[ >> to a non-zero value has been deprecated since
-Perl 5.12 and now throws a fatal error.
-See L<<< perldeprecation/Assigning non-zero to C<< $[ >> is fatal >>>.
+ 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 Previously deprecated sysread()/syswrite() on :utf8 handles now fatal
+[ List each incompatible change as a =head2 entry ]
-Calling sysread(), syswrite(), send() or recv() on a C<:utf8> handle,
-whether applied explicitly or implicitly, is now fatal. This was
-deprecated in perl 5.24.
+=head1 Deprecations
-There were two problems with calling these functions on C<:utf8>
-handles:
+XXX Any deprecated features, syntax, modules etc. should be listed here.
-=over
+=head2 Module removals
-=item *
+XXX Remove this section if not applicable.
-All four functions only paid attention to the C<:utf8> flag. Other
-layers were completely ignored, so a handle with
-C<:encoding(UTF-16LE)> layer would be treated as UTF-8. Other layers,
-such as compression are completely ignored with or without the
-C<:utf8> flag.
+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.
-=item *
+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
-sysread() and recv() would read from the handle, skipping any
-validation by the layers, and do no validation of their own. This
-could lead to invalidly encoded perl scalars.
+=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
-[perl #125760]
+[ 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 ]
-=head2 my() in false conditional prohibited
+=over 4
-Declarations such as C<my $x if 0> are no longer permitted.
+=item *
-[perl #133543]
+XXX
-=head2 Fatalize $* and $#
+=back
-These special variables, long deprecated, now throw exceptions when used.
+=head1 Modules and Pragmata
-[perl #133583]
+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.
-=head2 Fatalize unqualified use of dump()
+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 C<dump()> function, long discouraged, may no longer be used unless it is
-fully qualified, I<i.e.>, C<CORE::dump()>.
+[ Within each section, list entries as an =item entry ]
-[perl #133584]
+=head2 New Modules and Pragmata
-=head2 Remove File::Glob::glob()
+=over 4
-The C<File::Glob::glob()> function, long deprecated, has been removed and now
-throws an exception which advises use of C<File::Glob::bsd_glob()> instead.
+=item *
-[perl #133586]
+XXX Remove this section if not applicable.
-=head1 Modules and Pragmata
+=back
=head2 Updated Modules and Pragmata
=item *
-L<B> has been upgraded from version 1.74 to 1.75.
+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<B::Concise> has been upgraded from version 1.003 to 1.004.
+=back
-=item *
+=head2 Removed Modules and Pragmata
-L<B::Deparse> has been upgraded from version 1.48 to 1.49.
+=over 4
=item *
-L<bignum> has been upgraded from version 0.50 to 0.51.
+XXX
-=item *
+=back
-L<bytes> has been upgraded from version 1.06 to 1.07.
+=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<CPAN> has been upgraded from version 2.20-TRIAL to 2.21-TRIAL.
+=head2 New Documentation
-=item *
+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, 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>
-L<Devel::Peek> has been upgraded from version 1.27 to 1.28.
+=over 4
=item *
-L<feature> has been upgraded from version 1.53 to 1.54.
+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<File::Copy> has been upgraded from version 2.33 to 2.34.
+XXX L<message|perldiag/"message">
+
+=back
+
+=head3 New Warnings
+
+=over 4
=item *
-L<File::Glob> has been upgraded from version 1.31 to 1.32.
+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<Module::CoreList> has been upgraded from version 5.20180920 to 5.20181020.
+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 *
-L<sigtrap> has been upgraded from version 1.08 to 1.09.
+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<Unicode::UCD> has been upgraded from version 0.71 to 0.72.
+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 *
-L<vars> has been upgraded from version 1.04 to 1.05.
+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
-C<vars.pm> no longer disables non-vars strict when checking if strict
-vars is enabled. [perl #130674]
+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 Removed Modules and Pragmata
+=head2 Discontinued Platforms
+
+XXX List any platforms that this version of perl no longer compiles on.
=over 4
-=item *
+=item XXX-some-platform
+
+XXX
-B::Debug is no longer distributed with the core distribution. It remains
-available on CPAN.
+=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 *
-The sizing pass has been eliminated from the regular expression
-compiler. An extra pass may instead be needed in some cases to count
-the number of parenthetical capture groups.
+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 *
-C<pack "u", "invalid uuencoding"> now properly NUL terminates the
-zero-length SV produced. [perl #132655]
+XXX
-=item *
+=back
-Improve the debugging output for calloc() calls with C<-Dm>. [perl #133439]
+=head1 Known Problems
-=item *
+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.
-Regexp script runs were failing to permit ASCII digits in some cases.
-[perl #133547]
+[ List each fix as an =item entry ]
+
+=over 4
=item *
-On Unix-like systems supporting a platform-specific technique for
-determining L<< C<$^X>|perlvar/$^X >>, Perl failed to fall back to the
-generic technique when the platform-specific one fails (for example, a Linux
-system with /proc not mounted). This was a regression in Perl 5.28.0.
-[perl #133573]
+XXX
=back
-=head1 Acknowledgements
+=head1 Errata From Previous Releases
-Perl 5.29.4 represents approximately 4 weeks of development since Perl
-5.29.3 and contains approximately 8,400 lines of changes across 180 files
-from 17 authors.
+=over 4
-Excluding auto-generated files, documentation and release tools, there were
-approximately 6,300 lines of changes to 110 .pm, .t, .c and .h files.
+=item *
-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 5.29.4:
+XXX Add anything here that we forgot to add, or were mistaken about, in
+the perldelta of a previous release.
-Aaron Crane, Alexandr Savca, Andreas König, Chris 'BinGOs' Williams, Craig
-A. Berry, Dagfinn Ilmari Mannsåker, David Mitchell, Eugen Konkov, James E
-Keenan, John SJ Anderson, Karl Williamson, Matthias Bethke, Nicolas R.,
-Sisyphus, Slaven Rezic, Tomasz Konojacki, Tony Cook.
+=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 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 v5.29.4..HEAD
=head1 Reporting Bugs
https://perl5.git.perl.org / perl5.git / commitdiff