=head1 NAME
-[ 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 v5.17.9
+perldelta - what is new for perl v5.17.11
=head1 DESCRIPTION
-This document describes differences between the 5.17.8 release and the 5.17.9
+This document describes differences between the 5.17.10 release and the 5.17.11
release.
-If you are upgrading from an earlier release such as 5.17.7, first read
-L<perl5178delta>, which describes differences between 5.17.7 and 5.17.8.
-
-=head1 Notice
-
-XXX Any important notices here
-
-=head1 Core Enhancements
-
-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 ]
-
-=head2 Interpolations now Accepted in Regular Expression Set Operations
-
-Perl v5.17.8 introduced L<regular expression set operations|perlre/(?[ ])>.
-They have now been expanded to allow the interpolation of a
-previously-compiled set into a bigger set, like this:
-
- my $thai_or_lao = qr/\p{Thai} + \p{Lao}/;
- ...
- qr/(?[ \p{Digit} & $thai_or_lao ])/;
-
-=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 ]
+If you are upgrading from an earlier release such as 5.17.9, first read
+L<perl51710delta>, which describes differences between 5.17.9 and 5.17.10.
=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. In
-particular, deprecated modules should be listed here even if they are listed as
-an updated module in the L</Modules and Pragmata> section.
-
-[ List each deprecation as a =head2 entry ]
-
-=head2 Deprecated Modules
-
-The following modules will be removed from the core distribution in a
-future release, and should be installed from CPAN instead. Distributions
-on CPAN which require these should add them to their prerequisites. The
-core versions of these modules C<warnings> will issue a deprecation warning.
-
-You can silence these deprecation warnings by installing the modules
-in question from CPAN.
-
-=over
-
-=item L<Archive::Extract>
-
-=item L<B::Lint>
-
-=item L<B::Lint::Debug>
-
-=item L<CPANPLUS>
-
-=item L<CPANPLUS::Backend>
-
-=item L<CPANPLUS::Backend::RV>
-
-=item L<CPANPLUS::Config>
-
-=item L<CPANPLUS::Config::HomeEnv>
-
-=item L<CPANPLUS::Configure>
-
-=item C<CPANPLUS::Configure::Setup>
-
-=item L<CPANPLUS::Dist>
-
-=item L<CPANPLUS::Dist::Autobundle>
-
-=item L<CPANPLUS::Dist::Base>
-
-=item L<CPANPLUS::Dist::Build>
-
-=item L<CPANPLUS::Dist::Build::Constants>
-
-=item L<CPANPLUS::Dist::MM>
-
-=item L<CPANPLUS::Dist::Sample>
-
-=item L<CPANPLUS::Error>
-
-=item L<CPANPLUS::Internals>
-
-=item C<CPANPLUS::Internals::Constants>
-
-=item C<CPANPLUS::Internals::Constants::Report>
-
-=item L<CPANPLUS::Internals::Extract>
-
-=item L<CPANPLUS::Internals::Fetch>
-
-=item L<CPANPLUS::Internals::Report>
-
-=item L<CPANPLUS::Internals::Search>
-
-=item L<CPANPLUS::Internals::Source>
-
-=item L<CPANPLUS::Internals::Source::Memory>
-
-=item L<CPANPLUS::Internals::Source::SQLite>
-
-=item C<CPANPLUS::Internals::Source::SQLite::Tie>
-
-=item L<CPANPLUS::Internals::Utils>
-
-=item C<CPANPLUS::Internals::Utils::Autoflush>
-
-=item L<CPANPLUS::Module>
-
-=item L<CPANPLUS::Module::Author>
+Although no major incompatibilities have been introduced, the "switch" family
+of features have been marked experimental and will now emit warnings. These
+are: the C<~~> operator, C<given>, and C<when>.
-=item L<CPANPLUS::Module::Author::Fake>
-
-=item L<CPANPLUS::Module::Checksums>
-
-=item L<CPANPLUS::Module::Fake>
-
-=item C<CPANPLUS::Module::Signature>
-
-=item L<CPANPLUS::Selfupdate>
-
-=item L<CPANPLUS::Shell>
-
-=item L<CPANPLUS::Shell::Classic>
-
-=item L<CPANPLUS::Shell::Default>
-
-=item L<CPANPLUS::Shell::Default::Plugins::CustomSource>
-
-=item L<CPANPLUS::Shell::Default::Plugins::Remote>
-
-=item L<CPANPLUS::Shell::Default::Plugins::Source>
-
-=item L<Devel::InnerPackage>
-
-=item L<Log::Message>
-
-=item L<Log::Message::Config>
-
-=item L<Log::Message::Handlers>
-
-=item L<Log::Message::Item>
-
-=item L<Log::Message::Simple>
-
-=item L<Module::Pluggable>
-
-=item L<Module::Pluggable::Object>
-
-=item L<Object::Accessor>
-
-=item L<Term::UI>
-
-=item L<Term::UI::History>
-
-=back
-
-=head3 Deprecated Utilities
-
-The following utilities will be removed from the core distribution in a
-future release as their associated modules have been deprecated. They
-will remain available with the applicable CPAN distribution.
-
-=over
-
-=item L<cpanp>
-
-Included with L<CPANPLUS>.
-
-=item C<cpanp-run-perl>
-
-Included with L<CPANPLUS>.
-
-=item L<cpan2dist>
-
-Included with L<CPANPLUS>.
-
-=item L<pod2latex>
-
-The L<Pod::LaTeX> module was deprecated with 5.17.8.
-
-=back
-
-=head2 Five additional characters should be escaped in patterns with C</x>
-
-When a regular expression pattern is compiled with C</x>, Perl treats 6
-characters as white space to ignore, such as SPACE and TAB. However,
-Unicode recommends 11 characters be treated thusly. In preparation to
-conforming with this in a future Perl version, in the meantime, use of
-any of the missing characters will raise a deprecation warning, unless
-turned off. The five characters are:
-U+0085 NEXT LINE,
-U+200E LEFT-TO-RIGHT MARK,
-U+200F RIGHT-TO-LEFT MARK,
-U+2028 LINE SEPARATOR,
-and
-U+2029 PARAGRAPH SEPARATOR.
-
-=head1 Performance Enhancements
-
-XXX Changes which enhance performance without changing behaviour go here.
-There may well be none in a stable release.
+=head1 Modules and Pragmata
-[ List each enhancement as a =item entry ]
+=head2 Updated Modules and Pragmata
=over 4
=item *
-XXX
-
-=back
+Fixed the merge of ExtUtils-MakeMaker 6.65_01 to remove an excluded
+file. This was causing a test failure on Win32 [perl #117477]
-=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>, which prints stub
-entries to STDOUT. Results can be pasted in place of the '=head2' entries
-below. A paragraph summary for important changes should then be added by hand.
-In an ideal world, dual-life modules would have a F<Changes> file that could be
-cribbed.
+=item *
-[ Within each section, list entries as a =item entry ]
+B::Deparse has been upgraded from version 1.19 to 1.20, adding stub deparsing
+for lexical subroutines.
-=head2 New Modules and Pragmata
+=item *
-=over 4
+bigint has been upgraded from version 0.33 to 0.34.
=item *
-L<Config::Perl::V> version 0.16 has been added as a dual-lifed module.
-It provides structured data retrieval of C<perl -V> output including
-information only known to the C<perl> binary and not available via L<Config>.
+CPAN has been upgraded from its trial 2.00 release to its final 2.00 release.
-=back
+=item *
-=head2 Updated Modules and Pragmata
-
-=over 4
+Exporter has been upgraded from version 5.67 to 5.68.
=item *
-L<Benchmark> has been upgraded from version 1.13 to 1.14.
-
-The "too few iterations" message is now a warning on STDERR
-instead of being output on STDOUT.
+ExtUtils::CBuilder has been upgraded from version 0.280209 to 0.280210.
=item *
-L<File::Temp> has been upgraded from version 0.22 to 0.22_90
-
-Fixes various bugs involving directory removal. Defers unlinking tempfiles if
-the initial unlink fails, which fixes problems on NFS.
+ExtUtils::MakeMaker has been upgraded from version 6.65_01 to 6.66.
=item *
-L<PerlIO::scalar> has been upgraded from version 0.15 to 0.16.
+IO has been upgraded from version 1.27 to 1.28.
-The buffer scalar supplied may now only contain code pounts 0xFF or
-lower. [perl #109828]
+=item *
-=back
+overload has been upgraded from version 1.21 to 1.22.
-=head2 Removed Modules and Pragmata
+=item *
-=over 4
+Storable has been upgraded from version 2.40 to 2.41.
=item *
-XXX
+warnings has been upgraded from version 1.17 to 1.18.
=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
-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.
+=head3 Asian-language documentation
-=head3 L<XXX>
-
-=over 4
-
-=item *
-
-XXX Description of the change here
-
-=back
+The Asian-language documentation, previously stored in a few different
+encodings, have been transcoded to UTF-8.
=head1 Diagnostics
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
=item *
-XXX L<message|perldiag/"message">
-
-=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 directories F<utils> and F<x2p>.
-
-[ List utility changes as a =head3 entry for each utility and =item
-entries for each change
-Use L<XXX> with program names to get proper documentation linking. ]
-
-=head3 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 a =item entry ].
-
-=over 4
+L<Smartmatch is experimental|perldiag/"Smartmatch is experimental">
=item *
-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.
-
-[ List each test improvement as a =item entry ]
-
-=over 4
+L<given is experimental|perldiag/"given is experimental">
=item *
-XXX
+L<when is experimental|perldiag/"when is experimental">
=back
=head1 Platform Support
-XXX Any changes to platform support should be listed in the sections below.
-
-[ Within the sections, list each platform as a =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 a =item entry ]
-
=over 4
-=item *
+=item VMS
-Synonyms for the misleadingly named C<av_len()> has been created:
-C<av_top_index()> and C<av_tindex>. All three of these return the
-number of the highest index in the array, not the number of elements it
-contains. (The name C<av_top> which was introduced in Perl v.5.17.8 has
-been removed.)
+As of 5.18.0, Perl on VMS can (at last) be built in and installed from a
+directory having dots in the name, so it is no longer necessary to rename the
+top-level source directory before building.
-XXX
+The pertinent instructions have been removed from README.vms, so we also no
+longer need to update the version number that was embedded in those
+instructions.
=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 a =item entry ]
-
=over 4
-=item *
+=item Make vms.c's Perl_flex_fstat preserve errno on success
--DPERL_GLOBAL_STRUCT builds now free the global struct B<after>
-they've finished using it.
+=item split's first argument is more consistently interpreted
-=back
-
-=head1 Known Problems
+After some changes earlier in 5.17, C<split>'s behavior has been simplified: if
+the PATTERN argument evaluates to a literal string containing one space, it is
+treated the way that a I<literal> string containing one space once was.
-XXX Descriptions of platform agnostic bugs we know we can't fix go here. Any
-tests that had to be C<TODO>ed for the release would be noted here. Unfixed
-platform specific bugs also go here.
+=item Handle overloading properly in compile-time regex
-[ List each fix as a =item entry ]
+C<(?{…})> and C<qr> constant overloading did not play nicely together, and when
+C<qr> constant overloading was in effect, C<qr> constructs inside a C<(?{…})>
+construct were incorrectly interpreted. [perl #116823]
-=over 4
-
-=item *
+=back
-XXX
+=head1 Acknowledgements
-=back
+Perl 5.17.11 represents approximately 4 weeks of development since Perl 5.17.10
+and contains approximately 3,800 lines of changes across 130 files from 17
+authors.
-=head1 Obituary
+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 5.17.11:
-XXX If any significant core contributor has died, we've added a short obituary
-here.
+Aaron Crane, Andy Dougherty, Brian Fraser, Chris 'BinGOs' Williams, Craig A.
+Berry, David Mitchell, François Perrad, James E Keenan, Jan Dubois, Karl
+Williamson, Leon Timmermans, Max Maischein, Moritz Lenz, Nicholas Clark,
+Ricardo Signes, Tony Cook, Yves Orton.
-=head1 Acknowledgements
+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 Generate this with:
+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.
- perl Porting/acknowledgements.pl v5.17.8..HEAD
+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
https://perl5.git.perl.org / perl5.git / blobdiff