[ 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 v5.13.9
+perldelta - what is new for perl v5.13.10
=head1 DESCRIPTION
-This document describes differences between the 5.13.8 release and
-the 5.13.9 release.
+This document describes differences between the 5.XXX.XXX release and
+the 5.XXX.XXX release.
-If you are upgrading from an earlier release such as 5.13.7, first read
-L<perl5138delta>, which describes differences between 5.13.7 and
-5.13.8.
+If you are upgrading from an earlier release such as 5.YYY.YYY, first read
+L<perl5YYYdelta>, which describes differences between 5.ZZZ.ZZZ and
+5.YYY.YYY.
=head1 Notice
[ List each enhancement as a =head2 entry ]
-=head2 New regular expression modifier C</a>
-
-The C</a> regular expression modifier restricts C<\s> to match precisely
-the five characters C<[ \f\n\r\t]>, C<\d> to match precisely the 10
-characters C<[0-9]>, C<\w> to match precisely the 63 characters
-C<[A-Za-z0-9_]>, and the Posix (C<[[:posix:]]>) character classes to
-match only the appropriate ASCII characters. The complements, of
-course, match everything but; and C<\b> and C<\B> are correspondingly
-affected. Otherwise, C</a> behaves like the C</u> modifier, in that
-case-insensitive matching uses Unicode semantics; for example, "k" will
-match the Unicode C<\N{KELVIN SIGN}> under C</i> matching, and code
-points in the Latin1 range, above ASCII will have Unicode semantics when
-it comes to case-insensitive matching. Like its cousins (C</u>, C</l>,
-and C</d>), and in spite of the terminology, C</a> in 5.14 will not
-actually be able to be used as a suffix at the end of a regular
-expression (this restriction is planned to be lifted in 5.16). It must
-occur either as an infix modifier, such as C<(?a:...)> or (C<(?a)...>,
-or it can be turned on within the lexical scope of C<use re '/a'>.
-Turning on C</a> turns off the other "character set" modifiers.
-
-=head2 Any unsigned value can be encoded as a character
-
-With this release, Perl is adopting a model that any unsigned value can
-be treated as a code point and encoded internally (as utf8) without
-warnings -- not just the code points that are legal in Unicode.
-However, unless utf8 warnings have been
-explicitly lexically turned off, outputting or performing a
-Unicode-defined operation (such as upper-casing) on such a code point
-will generate a warning. Attempting to input these using strict rules
-(such as with the C<:encoding('UTF-8')> layer) will continue to fail.
-Prior to this release the handling was very inconsistent, and incorrect
-in places. Also, the Unicode non-characters, some of which previously were
-erroneously considered illegal in places by Perl, contrary to the Unicode
-standard, are now always legal internally. But inputting or outputting
-them will work the same as for the non-legal Unicode code points, as the
-Unicode standard says they are illegal for "open interchange".
+=head2 Add C<\p{Titlecase}> as a synonym for C<\p{Title}>
+
+This synyom is added for symmetry with the Unicode property names
+C<\p{Uppercase}> and C<\p{Lowercase}>.
=head1 Security
[ List each incompatible change as a =head2 entry ]
+=head2 Most C<\p{}> properties are now immune from case-insensitive matching
+
+For most Unicode properties, it doesn't make sense to have them match
+differently under C</i> case-insensitive matching than not. And doing
+so leads to unexpected results and potential security holes. For
+example
+
+ m/\p{ASCII_Hex_Digit}+/i
+
+could previously match non-ASCII characters because of the Unicode
+matching rules. There were a number of bugs in this feature until an
+earlier release in the 5.13 series. Now this release reverts, and
+removes the feature completely except for the few properties where
+people have come to expect it, namely the ones where casing is an
+integral part of their functionality, such as C<m/\p{Uppercase}/i> and
+C<m/\p{Lowercase}/i>, both of which match the exact same code points,
+namely those matched by C<m/\p{Cased}/i>. Details are in
+L<perlrecharclass/Unicode Properties>.
+
+User-defined property handlers that need to match differently under
+C</i> must change to read the new boolean parameter passed it which is
+non-zero if case-insensitive matching is in effect; 0 if not. See
+L<perluniprops/User-Defined Character Properties>.
+
=head1 Deprecations
XXX Any deprecated features, syntax, modules etc. should be listed here.
=item *
-L<CPAN::Meta::YAML> 0.002 has been added as a dual-life module. It supports a
-subset of YAML sufficient for reading and writing META.yml and MYMETA.yml files
-included with CPAN distributions or generated by the module installation
-toolchain. It should not be used for any other general YAML parsing or
-generation task.
-
-=item *
-
-L<HTTP::Tiny> 0.009 has been added as a dual-life module. It is a very
-small, simple HTTP/1.1 client designed for simple GET requests and file
-mirroring. It has has been added to enable CPAN.pm and CPANPLUS to
-"bootstrap" HTTP access to CPAN using pure Perl without relying on external
-binaries like F<curl> or F<wget>.
-
-=item *
-
-L<Module::Metadata> 1.000003 has been added as a dual-life module. It gathers
-package and POD information from Perl module files. It is a standalone module
-based on Module::Build::ModuleInfo for use by other module installation
-toolchain components. Module::Build::ModuleInfo has been deprecated in
-favor of this module instead.
-
-=item *
-
-L<Perl::OSType> 1.002 has been added as a dual-life module. It maps Perl
-operating system names (e.g. 'dragonfly' or 'MSWin32') to more generic types
-with standardized names (e.g. "Unix" or "Windows"). It has been refactored
-out of Module::Build and ExtUtils::CBuilder and consolidates such mappings into
-a single location for easier maintenance.
+XXX
=back
=item *
-C<Archive::Extract> has been upgraded from version 0.46 to 0.48
-
-=item *
-
-C<Archive::Tar> has been upgraded from version 1.74 to 1.76
-
-=item *
-
-C<CGI> has been upgraded from version 3.50 to 3.51
-
-=item *
-
-C<Compress::Raw::Bzip2> has been upgraded from version 2.031 to 2.033
-
-=item *
-
-C<Compress::Raw::Zlib> has been upgraded from version 2.030 to 2.033
-
-=item *
-
-C<CPAN> has been upgraded from version 1.94_62 to 1.94_63
-
-=item *
-
-C<CPANPLUS> has been upgraded from version 0.9010 to 0.9011
-
-=item *
-
-C<CPANPLUS::Dist::Build> has been upgraded from version 0.50 to 0.52
-
-=item *
-
-C<DB_File> has been upgraded from version 1.820 to 1.821
-
-=item *
-
-C<Encode> has been upgraded from version 2.40 to 2.42.
-Now, all 66 Unicode non-characters are treated the same way U+FFFF has
-always been treated; if it was disallowed, all 66 are disallowed; if it
-warned, all 66 warn.
-
-=item *
-
-C<File::Fetch> has been upgraded from version 0.28 to 0.32
-
-=item *
-
-C<IO::Compress> has been upgraded from version 2.030 to 2.033
+C<CGI> has been upgraded from version 3.51 to 3.52
=item *
-C<IPC::Cmd> has been upgraded from version 0.66 to 0.68
+C<IPC::Cmd> has been upgraded from version 0.68 to 0.70
=item *
-C<Log::Message> has been upgraded from version 0.02 to 0.04
+C<HTTP::Tiny> has been upgraded from version 0.009 to 0.010
=item *
-C<Log::Message::Simple> has been upgraded from version 0.06 to 0.08
+C<Module::Build> has been upgraded from version 0.3607 to 0.3622.
-=item *
-
-C<Module::Load::Conditional> has been upgraded from version 0.38 to 0.40
-
-=item *
-
-C<Object::Accessor> has been upgraded from version 0.36 to 0.38
+A notable change is the deprecation of several modules.
+Module::Build::Version has been deprecated and Module::Build now relies
+directly upon L<version>. Module::Build::ModuleInfo has been deprecated in
+favor of a standalone copy of it called L<Module::Metadata>.
+Module::Build::YAML has been deprecated in favor of L<CPAN::Meta::YAML>.
=item *
-C<Params::Check> has been upgraded from version 0.26 to 0.28
+C<Module::Load::Conditional> has been upgraded from version 0.40 to 0.42
=item *
-C<Pod::LaTeX> has been upgraded from version 0.58 to 0.59
+C<Module::Metadata> has been upgraded from version 1.000003 to 1.000004.
=item *
-C<Term::UI> has been upgraded from version 0.20 to 0.24
-
-=item *
-
-C<threads> has been upgraded from version 1.81_03 to 1.82
-
-=item *
+C<Parse::CPAN::Meta> has been upgraded from version 1.40 to 1.4401.
-C<threads::shared> has been upgraded from version 1.35 to 1.36
+The latest Parse::CPAN::Meta can now read YAML or JSON files using
+L<CPAN::Meta::YAML> and L<JSON::PP>, which are now part of the Perl core.
=item *
-C<Time::Local> has been upgraded from version 1.1901_01 to 1.2000.
+C<Term::UI> has been upgraded from version 0.24 to 0.26
=item *
-C<Unicode::Collate> has been upgraded from version 0.68 to 0.70
+C<Unicode::Collate> has been upgraded from version 0.68 to 0.72
This also sees the switch from using the pure-perl version of this
-module to the XS version.
+module to the XS version.`
=item *
-C<Unicode::Normalize> has been upgraded from version 1.07 to 1.10
+XXX
=back
However, any changes to F<pod/perldiag.pod> should go in the L</Diagnostics>
section.
-=head3 L<XXX>
+=head3 L<perlhack> and perlrepository
=over 4
=item *
-XXX Description of the change here
+The L<perlhack> and perlrepository documents have been heavily edited and
+split up into several new documents.
+
+The L<perlhack> document is now much shorter, and focuses on the Perl 5
+development process and submitting patches to Perl. The technical content has
+been moved to several new documents, L<perlsource>, L<perlinterp>,
+L<perlhacktut>, and L<perlhacktips>. This technical content has only been
+lightly edited.
+
+The perlrepository document has been renamed to L<perlgit>. This new document
+is just a how-to on using git with the Perl source code. Any other content
+that used to be in perlrepository has been moved to perlhack.
=back
=over 4
-=item XXX-some-platform
+=item Windows
-XXX
+=over 4
+
+=item *
+
+The C<test-prep> build target now depends on F<pod/perltoc.pod> to allow the
+F<t/porting/buildtoc.t> test to run successfully.
+
+=back
=back
=item *
-The opcode bodies for C<chop> and C<chomp> and for C<schop> and C<schomp> have
-been merged. The implementation functions C<Perl_do_chop()> and
-C<Perl_do_chomp()>, never part of the public API, have been merged and moved to
-a static function in F<pp.c>. This shrinks the perl binary slightly, and should
-not affect any code outside the core (unless it is relying on the order of side
-effects when C<chomp> is passed a I<list> of values).
-
-=item *
-
-Some of the flags parameters to the uvuni_to_utf8_flags() and
-utf8n_to_uvuni() have changed. This is a result of Perl now allowing
-internal storage and manipulation of code points that are problematic
-in some situations. Hence, the default actions for these functions has
-been complemented to allow these code points. The new flags are
-documented in L<perlapi>. Code that requires the problematic code
-points to be rejected needs to change to use these flags. Some flag
-names are retained for backward source compatibility, though they do
-nothing, as they are now the default. However the flags
-C<UNICODE_ALLOW_FDD0>, C<UNICODE_ALLOW_FFFF>, C<UNICODE_ILLEGAL>, and
-C<UNICODE_IS_ILLEGAL> have been removed, as they stem from a
-fundamentally broken model of how the Unicode non-character code points
-should be handled, which is now described in
-L<perlunicode/Non-character code points>. See also L</Selected Bug Fixes>.
-
-=item *
-
-Certain shared flags in the C<pmop.op_pmflags> and C<regexp.extflags>
-structures have been removed. These are: C<Rxf_Pmf_LOCALE>,
-C<Rxf_Pmf_UNICODE>, and C<PMf_LOCALE>. Instead there are encodes and
-three static in-line functions for accessing the information:
-C<get_regex_charset()>, C<set_regex_charset()>, and C<get_regex_charset_name()>,
-which are defined in the places where the orginal flags were.
+XXX
=back
=item *
-The handling of Unicode non-characters has changed.
-Previously they were mostly considered illegal, except that only one of
-the 66 of them was known about in places. The Unicode standard
-considers them legal, but forbids the "open interchange" of them.
-This is part of the change to allow the internal use of any code point
-(see L</Core Enhancements>). Together, these changes resolve
-L<# 38722|https://rt.perl.org/rt3/Ticket/Display.html?id=38722>,
-L<# 51918|http://rt.perl.org/rt3/Ticket/Display.html?id=51918>,
-L<# 51936|http://rt.perl.org/rt3/Ticket/Display.html?id=51936>,
-L<# 63446|http://rt.perl.org/rt3/Ticket/Display.html?id=63446>
+A Unicode C<\p{}> property match in a regular rexpression pattern will
+now force Unicode rules for the rest of the regular expression
=back
https://perl5.git.perl.org / perl5.git / blobdiff