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PERL5111DELTA(1)       Perl Programmers Reference Guide	      PERL5111DELTA(1)

NAME
       perl5111delta - what is new for perl v5.11.1

DESCRIPTION
       This document describes differences between the 5.11.0 release and the
       5.11.1 release.

Incompatible Changes
       ·   The boolkeys op moved to the group of hash ops. This breaks binary
	   compatibility.

       ·   "\s" "\w" and "\d" once again have the semantics they had in Perl
	   5.8.x.

Core Enhancements
   Add "package NAME VERSION" syntax
       This new syntax allows a module author to set the $VERSION of a
       namespace when the namespace is declared with 'package'.	 It eliminates
       the need for "our $VERSION = ..." and similar constructs.  E.g.

	     package Foo::Bar 1.23;
	     # $Foo::Bar::VERSION == 1.23

       There are several advantages to this:

       ·   $VERSION is parsed in exactly the same way as "use NAME VERSION"

       ·   $VERSION is set at compile time

       ·   Eliminates "$VERSION = ..." and "eval $VERSION" clutter

       ·   As it requires VERSION to be a numeric literal or v-string literal,
	   it can be statically parsed by toolchain modules without "eval" the
	   way MM->parse_version does for "$VERSION = ..."

       ·   Alpha versions with underscores do not need to be quoted; static
	   parsing will preserve the underscore, but during compilation, Perl
	   will remove underscores as it does for all numeric literals

	   It does not break old code with only "package NAME", but code that
	   uses "package NAME VERSION" will need to be restricted to perl
	   5.11.X or newer This is analogous to the change to "open" from two-
	   args to three-args.	Users requiring the latest Perl will benefit,
	   and perhaps N years from now it will become standard practice when
	   Perl 5.12 is targeted the way that 5.6 is today.

Modules and Pragmata
   Updated Modules
       ·   Upgrade to Test-Simple 0.94

       ·   Upgrade to Storable 2.21

       ·   Upgrade to Pod-Simple 3.08

       ·   Upgrade to Parse-CPAN-Meta 1.40

       ·   Upgrade to ExtUtils-Manifest 1.57

       ·   Upgrade to ExtUtils-CBuilder 0.260301

       ·   Upgrade to CGI.pm-3.48

       ·   Upgrade CPANPLUS to CPAN version 0.89_02

       ·   Upgrade to threads::shared 1.32

       ·   Upgrade ExtUtils::ParseXS to 2.21

       ·   Upgrade File::Path to 2.08 (and add taint.t test)

       ·   Upgrade Module::CoreList to 2.20

       ·   Updated Object::Accessor to0.36

New Documentation
       ·   perlpolicy extends the "Social contract about contributed modules"
	   into the beginnings of a document on Perl porting policies.

Changes to Existing Documentation
       Documentation for $1 in perlvar.pod clarified

Performance Enhancements
       "if (%foo)" has been optimized to be faster than "if (keys %foo)"

Platform Specific Notes
       Darwin (Mac OS X)
	   ·   Skip testing the be_BY.CP1131 locale on Darwin 10 (Mac OS X
	       10.6), as it's still buggy.

	   ·   Correct infelicities in the regexp used to identify buggy
	       locales on Darwin 8 and 9 (Mac OS X 10.4 and 10.5,
	       respectively).

       DragonFly BSD
	   ·   Fix thread library selection [perl #69686]

       Win32
	   ·   Initial support for mingw64 is now available

	   ·   Various bits of Perl's build infrastructure are no longer
	       converted to win32 line endings at release time. If this hurts
	       you, please speak up.

Selected Bug Fixes
       ·   Perl now properly returns a syntax error instead of segfaulting if
	   "each", "keys" or "values" is used without an argument

       ·   "tell()" now fails properly if called without an argument and when
	   no previous file was read

	   "tell()" now returns "-1", and sets errno to "EBADF", thus
	   restoring the 5.8.x behaviour

       ·   overload no longer implicitly unsets fallback on repeated 'use
	   overload' lines

       ·   POSIX::strftime() can now handle Unicode characters in the format
	   string.

       ·   The Windows select() implementation now supports all empty
	   "fd_set"s more correctly.

New or Changed Diagnostics
       ·   The 'syntax' category was removed from 5 warnings that should only
	   be in 'deprecated'.

       ·   Three fatal pack/unpack error messages have been normalized to
	   "panic: %s"

       ·   "Unicode character is illegal" has been rephrased to be more
	   accurate

	   It now reads "Unicode non-character is illegal in interchange" and
	   the perldiag documentation has been expanded a bit.

       ·   Perl now defaults to issuing a warning if a deprecated language
	   feature is used.

	   To disable this feature in a given lexical scope, you should use
	   "no warnings 'deprecated';" For information about which language
	   features are deprecated and explanations of various deprecation
	   warnings, please see perldiag

Testing
       ·   Significant cleanups to core tests to ensure that language and
	   interpreter features are not used before they're tested.

       ·   "make test_porting" now runs a number of important pre-commit
	   checks which might be of use to anyone working on the Perl core.

       ·   t/porting/podcheck.t automatically checks the well-formedness of
	   POD found in all .pl, .pm and .pod files in the MANIFEST, other
	   than in dual-lifed modules which are primarily maintained outside
	   the Perl core.

       ·   t/porting/manifest.t now tests that all files listed in MANIFEST
	   are present.

Known Problems
       Untriaged test crashes on Windows 2000
	   Several porters have reported mysterious crashes when Perl's entire
	   test suite is run after a build on certain Windows 2000 systems.
	   When run by hand, the individual tests reportedly work fine.

       Known test failures on VMS
	   Perl 5.11.1 fails a small set of core and CPAN tests as of this
	   release.  With luck, that'll be sorted out for 5.11.2

Errata for 5.11.0
       The Perl 5.11.0 release notes incorrectly described 'delete local'

Acknowledgements
       Perl 5.11.1 represents approximately 3 weeks development since Perl
       5.11.0 contains 22,000 lines of changes across 396 files from 26
       authors and committers:

       Abigail, Alex Vandiver, brian d foy, Chris Williams, Craig A. Berry,
       David Fifield, David Golden, demerphq, Eric Brine, Geoffrey T. Dairiki,
       George Greer, H.Merijn Brand, Jan Dubois, Jerry D. Hedden, Jesse
       Vincent, Josh ben Jore, Max Maischein, Nicholas Clark, Rafael Garcia-
       Suarez, Simon Schubert, Sisyphus, Smylers, Steve Hay, Steve Peters,
       Vincent Pit and Yves Orton.

       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.

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 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 "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.

SEE ALSO
       The Changes file for an explanation of how to view exhaustive details
       on what changed.

       The INSTALL file for how to build Perl.

       The README file for general stuff.

       The Artistic and Copying files for copyright information.

perl v5.12.2			  2010-09-05		      PERL5111DELTA(1)
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