=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 v5.11.3
=head1 DESCRIPTION
-This document describes differences between the 5.11.3 release and
+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 5.11.3, first read
-the L<perl5XXXdelta>, which describes differences between 5.11.3 and
-5.10.0
+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 Notice
+=head1 Incompatible Changes
-XXX Any important notices here
+=over
-=head1 Incompatible Changes
+=item Filehandles are blessed directly into C<IO::Handle::>, as C<FileHandle> is merely a wrapper around C<IO::Handle>.
-XXX For a release on a stable branch, this section aspires to be:
+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::>.
- There are no changes intentionally incompatible with 5.11.3. If any
- exist, they are bugs and reports are welcome.
+=back
=head1 Core Enhancements
-XXX New core language features go here. Summarise user-visible core language
-enhancements. Particularly prominent performance optimisations could go
-here, but most should go in the L</Performance Enhancements> section.
+=head2 Unicode version
-=head1 New Platforms
+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.
-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.
+=head2 Unicode properties
-=head1 Modules and Pragmata
+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.
-XXX All changes to installed files in F<cpan/>, F<dist/>, F<ext/> and F<lib/>
-go here, in a list ordered by distribution name. Minimally it should be the
-module version, but it's more useful to the end user to give a paragraph's
-summary of the module's changes. In an ideal world, dual-life modules would
-have a F<Changes> file that could be cribbed.
+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).
-=head2 New Modules and Pragmata
+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.
-=over 4
+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<XXX>
+=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 *
-XXX
+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<XXX>
+=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";
-XXX
+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
=over 4
-=item C<XXX>
+=item C<Archive::Extract>
-XXX
+Upgraded from version 0.34 to 0.36.
-=back
+=item C<CPAN>
-=head1 Utility Changes
+Upgraded from version 1.94_51 to 1.94_5301, which is 1.94_53 on CPAN
+plus some local fixes for bleadperl.
-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>.
+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
-=over 4
+=item C<CPANPLUS>
-=item F<XXX>
+Upgraded from version 0.89_09 to 0.90.
-XXX
+=item C<Encode>
-=back
+Upgraded from version 2.38 to 2.39.
-=head1 New Documentation
+=item C<ExtUtils::MakeMaker>
-XXX Changes which create B<new> files in F<pod/> go here.
+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.
-=over 4
+=item C<File::Path>
-=item L<XXX>
+Upgraded from version 2.08 to 2.08_01.
-XXX
+=item C<Module::Build>
-=back
+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.
-=head1 Changes to Existing Documentation
+=item C<Module::CoreList>
-XXX Changes which significantly change existing files in F<pod/> go here.
-Any changes to F<pod/perldiag.pod> should go in L</New or Changed Diagnostics>.
+Upgraded from version 2.23 to 2.24.
+=item C<POSIX>
-=head1 Performance Enhancements
+Upgraded from version 1.18 to 1.19. Error codes for C<getaddrinfo()> and C<getnameinfo()> are now
+available.
-XXX Changes which enhance performance without changing behaviour go here. There
-may well be none in a stable release.
+=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 *
+=item F<perlbug>
-XXX
+No longer reports "Message sent" when it hasn't actually sent the message
=back
-=head1 Installation and Configuration Improvements
+=head1 Changes to Existing Documentation
-XXX Changes to F<Configure>, F<installperl>, F<installman>, and analogous tools
-go here.
+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.
-=head2 Configuration improvements
+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>.
-XXX
-=head2 Compilation improvements
-XXX
+=head1 Installation and Configuration Improvements
-=head2 Platform Specific Changes
+=head2 Testing improvements
=over 4
-=item XXX-some-platform
-
-XXX
+=item It's now possible to override C<PERL5OPT> and friends in F<t/TEST>
=back
-=head1 Selected Bug Fixes
+=head2 Platform Specific Changes
+
+=over 4
-XXX Important bug fixes in the core language are summarised here.
-Bug fixes in files in F<ext/> and F<lib/> are best summarised in
-L</Modules and Pragmata>.
+=item Win32
=over 4
=item *
-XXX
+Always add a manifest resource to C<perl.exe> to specify the <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
-=head1 New or Changed Diagnostics
+=item cygwin
-XXX New or changed warnings emitted by the core's C<C> code go here.
+=over 4
+
+=item Enable IPv6 support on cygwin 1.7 and newer
+
+=back
+
+=item OpenVMS
=over 4
-=item C<XXX>
+=item Make -UDEBUGGING the default on VMS for 5.12.0.
-XXX
+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
-=head1 Changed Internals
+=back
-XXX Changes which affect the interface available to C<XS> code go here.
+=head1 Selected Bug Fixes
=over 4
=item *
-XXX
+Ensure that pp_qr returns a new regexp SV each time. Resolves RT #69852.
-=back
+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.
-=head1 New Tests
+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.
-XXX Changes which create B<new> files in F<t/> go here. Changes to
-existing files in F<t/> aren't worth summarising, although the bugs that
-they represent may be.
+=item *
-=over 4
+Several compilation errors and segfaults when perl was built with C<-Dmad> were fixed.
-=item F<XXX>
+=item *
-XXX
+Fixes for lexer API changes in 5.11.2 which broke NYTProf's savesrc option.
-=back
+=item *
-=head1 Known Problems
+F<-t> should only return TRUE for file handles connected to a TTY
-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, unless
-they were specific to a particular platform (see below).
+The Microsoft C version of isatty() returns TRUE for all
+character mode devices, including the /dev/null style "nul"
+device and printers like "lpt1".
-This is a list of some significant unfixed bugs, which are regressions
-from either 5.11.3 or 5.11.3.
+=item *
+
+Fixed a regression caused by commit fafafbaf which caused a panic during parameter passing [perl #70171]
-=over 4
=item *
-XXX
+On systems which in-place edits without backup files, -i'*' now works as the documentation says it does [perl #70802]
-=back
+=item *
-=head1 Deprecations
+Saving and restoring magic flags no longer loses readonly flag.
-XXX Add any new known deprecations here.
+=item *
-The following items are now deprecated.
+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<$'> when
+matching again.
+
+=item *
+
+Using named subroutines with C<sort> should no longer lead to bus errors [perl
+#71076]
+
+=item *
+
+Numerous bugfixes catch small issues caused by the recently-added Lexer API.
+
+=item *
+
+Smart match against C<@_> sometimes gave false negatives negatives. [perl #71078]
+
+=item *
+
+C<$@> 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 *
-XXX
+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 Platform Specific Notes
+=head1 Deprecations
-XXX Any changes specific to a particular platform. VMS and Win32 are the usual
-stars here. It's probably best to group changes under the same section layout
-as the main perldelta
+The following items are now deprecated.
+
+=over 4
+
+=item Use of "goto" to jump into a construct is deprecated
-=head1 Obituary
+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.
-XXX If any significant core contributor has died, we've added a short obituary
-here.
+=back
=head1 Acknowledgements
-XXX The list of people to thank goes here.
+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
The F<Artistic> and F<Copying> files for copyright information.
=cut
+
+
projects / p5sagit/p5-mst-13.2.git / blobdiff