=head1 NAME
-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 Core Enhancements
-
-=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} & $thai_or_lao ])/;
+If you are upgrading from an earlier release such as 5.17.9, first read
+L<perl51710delta>, which describes differences between 5.17.9 and 5.17.10.
=head1 Incompatible Changes
-=head2 C<$ENV{foo} = undef> no longer deletes value from environ
-
-5.17.3 Introduced a change where assiging C<undef> to an C<%ENV> key was equivalent
-to C<delete $ENV{foo}>.
-
-This release reverts that change.
-
-=head1 Deprecations
-
-The deprecation of lexical C<$_> in 5.17.7 has been commuted. The feature
-is now marked experimental.
-
-=head2 Deprecated pragma
-
-=over
-
-=item L<encoding>
-
-This module is deprecated under perl 5.18. It uses a mechanism provided by
-perl that is deprecated under 5.18 and higher, and may be removed in a
-future version.
-
-=back
-
-=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>
-
-=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.
+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>.
=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.
-
-[ Within each section, list entries as a =item entry ]
-
-=head2 New Modules and Pragmata
-
-=over 4
-
-=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>.
-
-=back
-
=head2 Updated Modules and Pragmata
=over 4
=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.
+Fixed the merge of ExtUtils-MakeMaker 6.65_01 to remove an excluded
+file. This was causing a test failure on Win32 [perl #117477]
=item *
-L<Data::Dumper> has been upgraded from version 2.141 to 2.142.
-
-Additional tests were added in order to improve statement, branch, condition
-and subroutine coverage. On the basis of the coverage analysis, some of the
-internals of Dumper.pm were refactored. Almost all methods are now
-documented.
+B::Deparse has been upgraded from version 1.19 to 1.20, adding stub deparsing
+for lexical subroutines.
=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.
+bigint has been upgraded from version 0.33 to 0.34.
=item *
-L<PerlIO::scalar> has been upgraded from version 0.15 to 0.16.
-
-The buffer scalar supplied may now only contain code pounts 0xFF or
-lower. [perl #109828]
-
-=back
-
-=head1 Documentation
-
-=head2 Changes to Existing Documentation
-
-=head3 L<perlsec>
-
-=over 4
+CPAN has been upgraded from its trial 2.00 release to its final 2.00 release.
=item *
-A syntax error was fixed in one of illustrative examples.
-
-=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>.
-
-=head2 New Diagnostics
-
-=head3 New Warnings
-
-=over 4
+Exporter has been upgraded from version 5.67 to 5.68.
=item *
-Strings with code points over 0xFF may not be mapped into in-memory file handles
+ExtUtils::CBuilder has been upgraded from version 0.280209 to 0.280210.
-=back
+=item *
-=head2 Changes to Existing Diagnostics
-
-=over 4
+ExtUtils::MakeMaker has been upgraded from version 6.65_01 to 6.66.
=item *
-The warnings for \b{ and \B{ were added in the 5.17 series; they are a
-deprecation warning which should be turned off by that category. One
-should not have to turn off regular regexp warnings as well to get rid
-of these.
-
-=back
+IO has been upgraded from version 1.27 to 1.28.
-=head1 Utility Changes
+=item *
-=head3 L<corelist>
-
-=over 4
+overload has been upgraded from version 1.21 to 1.22.
=item *
-Added C<--feature> switch which lists the first version bundle of each
-named feature given.
+Storable has been upgraded from version 2.40 to 2.41.
=item *
-Added C<--upstream> switch which shows if the given module
-is primarily maintained in perl core or on CPAN and bug tracker URL.
+warnings has been upgraded from version 1.17 to 1.18.
=back
-=head1 Configuration and Compilation
-
-=over 4
-
-=item *
+=head2 Changes to Existing Documentation
-Added C<useversionedarchname> option to Configure
+=head3 Asian-language documentation
-When set, it includes 'api_versionstring' in 'archname'. E.g.
-x86_64-linux-5.13.6-thread-multi. It is unset by default.
+The Asian-language documentation, previously stored in a few different
+encodings, have been transcoded to UTF-8.
-This feature was requested by Tim Bunce, who observed that
-INSTALL_BASE creates a library structure that does not
-differentiate by perl version. Instead, it places architecture
-specific files in "$install_base/lib/perl5/$archname". This makes
-it difficult to use a common INSTALL_BASE library path with
-multiple versions of perl.
+=head1 Diagnostics
-By setting -Duseversionedarchname, the $archname will be
-distinct for architecture *and* API version, allowing mixed use of
-INSTALL_BASE.
+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>.
-=item *
+=head3 New Warnings
-Configure will honour the external C<MAILDOMAIN> environment variable, if set.
+=over 4
=item *
-C<installman> no longer ignores the silent option
+L<Smartmatch is experimental|perldiag/"Smartmatch is experimental">
=item *
-Both C<META.yml> and C<META.json> files are now included in the distribution.
-
-=back
-
-=head1 Testing
-
-=over 4
+L<given is experimental|perldiag/"given is experimental">
=item *
-Enable perl core tests to pass when locale support is not available.
-
-use L<locale> - this will now die if $Config{d_setlocale} is not true.
-All tests that use L<locale> will skip if $Config{d_setlocale} is not true.
-This enables us to pass tests on Android which uses ICU instead of locales.
+L<when is experimental|perldiag/"when is experimental">
=back
=item VMS
-The character set for Extended Filename Syntax (EFS) is now enabled by default on
-VMS. Among other things, this provides better handling of dots in directory names,
-multiple dots in filenames,and spaces in filenames. To obtain the old behavior,
-set the logical name C<DECC$EFS_CHARSET> to C<DISABLE>.
-
-=item MidnightBSD
+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.
-C<libc_r> was removed from recent versions of MidnightBSD and older versions
-work better with C<pthread>. Threading is now enabled using C<pthread> which
-corrects build errors with threading enabled on 0.4-CURRENT.
-
-=back
-
-=head1 Internal Changes
-
-=over 4
-
-=item *
-
-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.)
+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
=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
-=item *
+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.
-A trailing '/' on a path in @INC will no longer have an additional '/' appended.
+=item Handle overloading properly in compile-time regex
-=item *
-
-The C<:crlf> layer now works when unread data doesn't fit into its own
-buffer. [perl #112244].
-
-=item *
-
-C<ungetc()> now handles UTF-8 encoded data. [perl #116322].
+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]
=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 a =item entry ]
-
-=over 4
+=head1 Acknowledgements
-=item *
+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.
-XXX
+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:
-=back
+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