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-=head1 NAME
-
-perl5113delta - what is new for perl v5.11.3
-
-=head1 DESCRIPTION
-
-This document describes differences between the 5.11.2 release and
-the 5.11.3 release.
-
-If you are upgrading from an earlier release such as 5.11.1, first read
-the L<perl5112delta>, which describes differences between 5.11.1 and
-5.11.2
-
-=head1 Incompatible Changes
-
-=head2 Filehandles are blessed directly into C<IO::Handle>, as C<FileHandle> is merely a wrapper around C<IO::Handle>.
-
-The previous behaviour was to bless Filehandles into L<FileHandle>
-(an empty proxy class) if it was loaded into memory and otherwise
-to bless them into C<IO::Handle>.
-
-=head1 Core Enhancements
-
-=head2 Unicode version
-
-Perl is shipped with the latest Unicode version, 5.2, dated October 2009. See
-L<http://www.unicode.org/versions/Unicode5.2.0> for details about this release
-of Unicode. See L<perlunicode> for instructions on installing and using
-older versions of Unicode.
-
-=head2 Unicode properties
-
-Perl can now handle every Unicode character property. A new pod,
-L<perluniprops>, lists all available non-Unihan character properties. By
-default the Unihan properties and certain others (deprecated and Unicode
-internal-only ones) are not exposed. See below for more details on
-these; there is also a section in the pod listing them, and why they are
-not exposed.
-
-Perl now fully supports the Unicode compound-style of using C<=> and C<:>
-in writing regular expressions: C<\p{property=value}> and
-C<\p{property:value}> (both of which mean the same thing).
-
-Perl now fully supports the Unicode loose matching rules for text
-between the braces in C<\p{...}> constructs. In addition, Perl also allows
-underscores between digits of numbers.
-
-All the Unicode-defined synonyms for properties and property values are
-now accepted.
-
-C<qr/\X/>, which matches a Unicode logical character, has been expanded to work
-better with various Asian languages. It now is defined as an C<extended
-grapheme cluster>. (See L<http://www.unicode.org/reports/tr29/>).
-Anything matched previously that made sense will continue to be matched. But
-in addition:
-
-=over
-
-=item *
-
-C<\X> will now not break apart a C<S<CR LF>> sequence.
-
-=item *
-
-C<\X> will now match a sequence including the C<ZWJ> and C<ZWNJ> characters.
-
-=item *
-
-C<\X> will now always match at least one character, including an initial mark.
-Marks generally come after a base character, but it is possible in Unicode to
-have them in isolation, and C<\X> will now handle that case, for example at the
-beginning of a line or after a C<ZWSP>. And this is the part where C<\X>
-doesn't match the things that it used to that don't make sense. Formerly, for
-example, you could have the nonsensical case of an accented LF.
-
-=item *
-
-C<\X> will now match a (Korean) Hangul syllable sequence, and the Thai and Lao
-exception cases.
-
-=back
-
-Otherwise, this change should be transparent for the non-affected languages.
-
-C<\p{...}> matches using the Canonical_Combining_Class property were
-completely broken in previous Perls. This is now fixed.
-
-In previous Perls, the Unicode C<Decomposition_Type=Compat> property and a
-Perl extension had the same name, which led to neither matching all the
-correct values (with more than 100 mistakes in one, and several thousand
-in the other). The Perl extension has now been renamed to be
-C<Decomposition_Type=Noncanonical> (short: C<dt=noncanon>). It has the same
-meaning as was previously intended, namely the union of all the
-non-canonical Decomposition types, with Unicode C<Compat> being just one of
-those.
-
-C<\p{Uppercase}> and C<\p{Lowercase}> have been brought into line with the
-Unicode definitions. This means they each match a few more characters
-than previously.
-
-C<\p{Cntrl}> now matches the same characters as C<\p{Control}>. This means it
-no longer will match Private Use (gc=co), Surrogates (gc=cs), nor Format
-(gc=cf) code points. The Format code points represent the biggest
-possible problem. All but 36 of them are either officially deprecated
-or strongly discouraged from being used. Of those 36, likely the most
-widely used are the soft hyphen (U+00AD), and BOM, ZWSP, ZWNJ, WJ, and
-similar, plus Bi-directional controls.
-
-C<\p{Alpha}> now matches the same characters as C<\p{Alphabetic}>. The Perl
-definition included a number of things that aren't really alpha (all
-marks), while omitting many that were. As a direct consequence, the
-definitions of C<\p{Alnum}> and C<\p{Word}> which depend on Alpha also change.
-
-C<\p{Word}> also now doesn't match certain characters it wasn't supposed
-to, such as fractions.
-
-C<\p{Print}> no longer matches the line control characters: Tab, LF, CR,
-FF, VT, and NEL. This brings it in line with the documentation.
-
-C<\p{Decomposition_Type=Canonical}> now includes the Hangul syllables.
-
-The Numeric type property has been extended to include the Unihan
-characters.
-
-There is a new Perl extension, the 'Present_In', or simply 'In',
-property. This is an extension of the Unicode Age property, but
-C<\p{In=5.0}> matches any code point whose usage has been determined
-I<as of> Unicode version 5.0. The C<\p{Age=5.0}> only matches code points
-added in I<precisely> version 5.0.
-
-A number of properties did not have the correct values for unassigned
-code points. This is now fixed. The affected properties are
-Bidi_Class, East_Asian_Width, Joining_Type, Decomposition_Type,
-Hangul_Syllable_Type, Numeric_Type, and Line_Break.
-
-The Default_Ignorable_Code_Point, ID_Continue, and ID_Start properties
-have been updated to their current Unicode definitions.
-
-Certain properties that are supposed to be Unicode internal-only were
-erroneously exposed by previous Perls. Use of these in regular
-expressions will now generate, if enabled, a deprecated warning message.
-The properties are: Other_Alphabetic, Other_Default_Ignorable_Code_Point,
-Other_Grapheme_Extend, Other_ID_Continue, Other_ID_Start, Other_Lowercase,
-Other_Math, and Other_Uppercase.
-
-An installation can now fairly easily change which Unicode properties
-Perl understands. As mentioned above, certain properties are by default
-turned off. These include all the Unihan properties (which should be
-accessible via the CPAN module Unicode::Unihan) and any deprecated or
-Unicode internal-only property that Perl has never exposed.
-
-The generated files in the C<lib/unicore/To> directory are now more
-clearly marked as being stable, directly usable by applications.
-New hash entries in them give the format of the normal entries,
-which allows for easier machine parsing. Perl can generate files
-in this directory for any property, though most are suppressed. An
-installation can choose to change which get written. Instructions
-are in L<perluniprops>.
-
-=head2 Regular Expressions
-
-U+0FFFF is now a legal character in regular expressions.
-
-=head1 Modules and Pragmata
-
-=head2 Pragmata Changes
-
-=over 4
-
-=item C<constant>
-
-Upgraded from version 1.19 to 1.20.
-
-=item C<diagnostics>
-
-This pragma no longer suppresses C<Use of uninitialized value in range (or flip)> warnings. [perl #71204]
-
-=item C<feature>
-
-Upgraded from 1.13 to 1.14. Added the C<unicode_strings> feature:
-
- use feature "unicode_strings";
-
-This pragma turns on Unicode semantics for the case-changing operations
-(uc/lc/ucfirst/lcfirst) on strings that don't have the internal UTF-8 flag set,
-but that contain single-byte characters between 128 and 255.
-
-=item C<legacy>
-
-The experimental C<legacy> pragma, introduced in 5.11.2, has been removed,
-and its functionality replaced by the new feature pragma, C<use feature
-"unicode_strings">.
-
-=item C<threads>
-
-Upgraded from version 1.74 to 1.75.
-
-=item C<warnings>
-
-Upgraded from 1.07 to 1.08. Added new C<warnings::fatal_enabled()> function.
-
-=back
-
-=head2 Updated Modules
-
-=over 4
-
-=item C<Archive::Extract>
-
-Upgraded from version 0.34 to 0.36.
-
-=item C<CPAN>
-
-Upgraded from version 1.94_51 to 1.94_5301, which is 1.94_53 on CPAN
-plus some local fixes for bleadperl.
-
-Includes better bzip2 support, improved FirstTime experience with
-auto-selection of CPAN mirrors, proper handling of modules removed from the
-Perl core, and an updated 'cpan' utility script
-
-=item C<CPANPLUS>
-
-Upgraded from version 0.89_09 to 0.90.
-
-=item C<Encode>
-
-Upgraded from version 2.38 to 2.39.
-
-=item C<ExtUtils::MakeMaker>
-
-Upgraded from version 6.55_02 to 6.56. Adds new BUILD_REQUIRES key to
-indicate build-only prerequisites. Also adds support for
-mingw64 and the new "package NAME VERSION" syntax.
-
-=item C<File::Path>
-
-Upgraded from version 2.08 to 2.08_01.
-
-=item C<Module::Build>
-
-Upgraded from version 0.35_09 to 0.36. Compared to 0.35, this version has a
-new 'installdeps' action, supports the PERL_MB_OPT environment variable, adds a
-'share_dir' property for L<File::ShareDir> support, support the "package NAME
-VERSION" syntax and has many other enhancements and bug fixes. The
-'passthrough' style of Module::Build::Compat has been deprecated.
-
-=item C<Module::CoreList>
-
-Upgraded from version 2.23 to 2.24.
-
-=item C<POSIX>
-
-Upgraded from version 1.18 to 1.19. Error codes for C<getaddrinfo()> and
-C<getnameinfo()> are now available.
-
-=item C<Pod::Simple>
-
-Upgraded from version 3.10 to 3.13.
-
-=item C<Safe>
-
-Upgraded from version 2.19 to 2.20.
-
-=back
-
-=head1 Utility Changes
-
-=over 4
-
-=item F<perlbug>
-
-No longer reports "Message sent" when it hasn't actually sent the message
-
-=back
-
-=head1 Changes to Existing Documentation
-
-The Pod specification (L<perlpodspec>) has been updated to bring the
-specification in line with modern usage already supported by most Pod systems.
-A parameter string may now follow the format name in a "begin/end" region.
-Links to URIs with a text description are now allowed. The usage of
-C<LE<lt>"section"E<gt>> has been marked as deprecated.
-
-L<if.pm|if> has been documented in L<perlfunc/use> as a means to get
-conditional loading of modules despite the implicit BEGIN block around C<use>.
-
-
-
-=head1 Installation and Configuration Improvements
-
-=head2 Testing improvements
-
-=over 4
-
-=item It's now possible to override C<PERL5OPT> and friends in F<t/TEST>
-
-=back
-
-=head2 Platform Specific Changes
-
-=over 4
-
-=item Win32
-
-=over 4
-
-=item *
-
-Always add a manifest resource to C<perl.exe> to specify the C<trustInfo>
-settings for Windows Vista and later. Without this setting Windows
-will treat C<perl.exe> as a legacy application and apply various
-heuristics like redirecting access to protected file system areas
-(like the "Program Files" folder) to the users "VirtualStore"
-instead of generating a proper "permission denied" error.
-
-For VC8 and VC9 this manifest setting is automatically generated by
-the compiler/linker (together with the binding information for their
-respective runtime libraries); for all other compilers we need to
-embed the manifest resource explicitly in the external resource file.
-
-This change also requests the Microsoft Common-Controls version 6.0
-(themed controls introduced in Windows XP) via the dependency list
-in the assembly manifest. For VC8 and VC9 this is specified using the
-C</manifestdependency> linker commandline option instead.
-
-=back
-
-=item cygwin
-
-=over 4
-
-=item Enable IPv6 support on cygwin 1.7 and newer
-
-=back
-
-=item OpenVMS
-
-=over 4
-
-=item Make -UDEBUGGING the default on VMS for 5.12.0.
-
-Like it has been everywhere else for ages and ages. Also make
-command-line selection of -UDEBUGGING and -DDEBUGGING work in
-configure.com; before the only way to turn it off was by saying
-no in answer to the interactive question.
-
-=back
-
-=back
-
-=head1 Selected Bug Fixes
-
-=over 4
-
-=item *
-
-Ensure that pp_qr returns a new regexp SV each time. Resolves RT #69852.
-
-Instead of returning a(nother) reference to the (pre-compiled) regexp in the
-optree, use reg_temp_copy() to create a copy of it, and return a reference to
-that. This resolves issues about Regexp::DESTROY not being called in a timely
-fashion (the original bug tracked by RT #69852), as well as bugs related to
-blessing regexps, and of assigning to regexps, as described in correspondence
-added to the ticket.
-
-It transpires that we also need to undo the SvPVX() sharing when ithreads
-cloning a Regexp SV, because mother_re is set to NULL, instead of a cloned
-copy of the mother_re. This change might fix bugs with regexps and threads in
-certain other situations, but as yet neither tests nor bug reports have
-indicated any problems, so it might not actually be an edge case that it's
-possible to reach.
-
-=item *
-
-Several compilation errors and segfaults when perl was built with C<-Dmad> were fixed.
-
-=item *
-
-Fixes for lexer API changes in 5.11.2 which broke NYTProf's savesrc option.
-
-=item *
-
-F<-t> should only return TRUE for file handles connected to a TTY
-
-The Microsoft C version of isatty() returns TRUE for all
-character mode devices, including the /dev/null style "nul"
-device and printers like "lpt1".
-
-=item *
-
-Fixed a regression caused by commit fafafbaf which caused a panic during
-parameter passing [perl #70171]
-
-=item *
-
-On systems which in-place edits without backup files, -i'*' now works as
-the documentation says it does [perl #70802]
-
-=item *
-
-Saving and restoring magic flags no longer loses readonly flag.
-
-=item *
-
-The malformed syntax C<grep EXPR LIST> (note the missing comma) no longer
-causes abrupt and total failure.
-
-=item *
-
-Regular expressions compiled with C<qr{}> literals properly set C<$'> when
-matching again.
-
-=item *
-
-Using named subroutines with C<sort> should no longer lead to bus errors [perl
-#71076]
-
-=item *
-
-Numerous bugfixes catch small issues caused by the recently-added Lexer API.
-
-=item *
-
-Smart match against C<@_> sometimes gave false negatives. [perl #71078]
-
-=item *
-
-C<$@> may now be assigned a read-only value (without error or busting the stack).
-
-=item *
-
-C<sort> called recursively from within an active comparison subroutine no
-longer causes a bus error if run multiple times. [perl #71076]
-
-=back
-
-=head1 New or Changed Diagnostics
-
-=over 4
-
-=item *
-
-C<split> now warns when called in void context
-
-=item *
-
-C<printf>-style functions called with too few arguments will now issue the
-warning C<"Missing argument in %s"> [perl #71000]
-
-=back
-
-=head1 New Tests
-
-Many modules updated from CPAN incorporate new tests.
-
-=over 4
-
-=item t/comp/final_line_num.t
-
-See if line numbers are correct at EOF
-
-=item t/comp/form_scope.t
-
-See if format scoping works
-
-=item t/comp/line_debug.t
-
-See if @{"_<$file"} works
-
-=item t/op/filetest_t.t
-
-See if -t file test works
-
-=item t/op/qr.t
-
-See if qr works
-
-=item t/op/utf8cache.t
-
-Tests malfunctions of utf8 cache
-
-=item t/re/uniprops.t
-
-Test unicode \p{} regex constructs
-
-=back
-
-=head1 Deprecations
-
-The following items are now deprecated.
-
-=over 4
-
-=item Use of "goto" to jump into a construct is deprecated
-
-Using C<goto> to jump from an outer scope into an inner
-scope is now deprecated. This rare use case was causing
-problems in the implementation of scopes.
-
-=back
-
-=head1 Acknowledgements
-
-Perl 5.11.3 represents approximately one month of development since
-Perl 5.11.2 and contains 61407 lines of changes across 396 files
-from 40 authors and committers:
-
-Abigail, Alex Davies, Alexandr Ciornii, Andrew Rodland, Andy
-Dougherty, Bram, brian d foy, Chip Salzenberg, Chris Williams, Craig
-A. Berry, Daniel Frederick Crisman, David Golden, Dennis Kaarsemaker,
-Eric Brine, Father Chrysostomos, Gene Sullivan, Gerard Goossen, H.
-Merijn Brand, Hugo van der Sanden, Jan Dubois, Jerry D. Hedden,
-Jesse Vincent, Jim Cromie, Karl Williamson, Leon Brocard, Max
-Maischein, Michael Breen, Moritz Lenz, Nicholas Clark, Rafael
-Garcia-Suarez, Reini Urban, Ricardo Signes, Stepan Kasal, Steve
-Hay, Steve Peters, Tim Bunce, Tony Cook, Vincent Pit and Zefram.
-
-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.
-
-=head1 Reporting Bugs
-
-If you find what you think is a bug, you might check the articles
-recently posted to the comp.lang.perl.misc newsgroup and the perl
-bug database at http://rt.perl.org/perlbug/ . There may also be
-information at http://www.perl.org/ , the Perl Home Page.
-
-If you believe you have an unreported bug, please run the B<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 please send
-it to perl5-security-report@perl.org. This points to a closed subscription
-unarchived mailing list, which includes all the core committers, who be able
-to help assess the impact of issues, figure out a resolution, and help
-co-ordinate the release of patches to mitigate or fix the problem across all
-platforms on which Perl is supported. Please only use this address for
-security issues in the Perl core, not for modules independently
-distributed on CPAN.
-
-=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
-
-