NAME

       perl5224delta - what is new for perl v5.22.4

DESCRIPTION

       This document describes differences between the 5.22.3 release and the 5.22.4 release.

       If you are upgrading from an earlier release such as 5.22.2, first read perl5223delta,
       which describes differences between 5.22.2 and 5.22.3.

Security

   Improved handling of '.' in @INC in base.pm
       The handling of (the removal of) '.' in @INC in base has been improved.  This resolves
       some problematic behaviour in the approach taken in Perl 5.22.3, which is probably best
       described in the following two threads on the Perl 5 Porters mailing list:
       <http://www.nntp.perl.org/group/perl.perl5.porters/2016/08/msg238991.html>,
       <http://www.nntp.perl.org/group/perl.perl5.porters/2016/10/msg240297.html>.

   "Escaped" colons and relative paths in PATH
       On Unix systems, Perl treats any relative paths in the PATH environment variable as
       tainted when starting a new process.  Previously, it was allowing a backslash to escape a
       colon (unlike the OS), consequently allowing relative paths to be considered safe if the
       PATH was set to something like "/\:.".  The check has been fixed to treat "." as tainted
       in that example.

Modules and Pragmata

   Updated Modules and Pragmata
       •   base has been upgraded from version 2.22 to 2.22_01.

       •   Module::CoreList has been upgraded from version 5.20170114_22 to 5.20170715_22.

Selected Bug Fixes

       •   Fixed a crash with "s///l" where it thought it was dealing with UTF-8 when it wasn't.
           [GH #15543] <https://github.com/Perl/perl5/issues/15543>

Acknowledgements

       Perl 5.22.4 represents approximately 6 months of development since Perl 5.22.3 and
       contains approximately 2,200 lines of changes across 52 files from 16 authors.

       Excluding auto-generated files, documentation and release tools, there were approximately
       970 lines of changes to 18 .pm, .t, .c and .h files.

       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 5.22.4:

       Aaron Crane, Abigail, Aristotle Pagaltzis, Chris 'BinGOs' Williams, David Mitchell, Eric
       Herman, Father Chrysostomos, James E Keenan, Karl Williamson, Lukas Mai, Renee Baecker,
       Ricardo Signes, Sawyer X, Stevan Little, Steve Hay, Tony Cook.

       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.

       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.

       For a more complete list of all of Perl's historical contributors, please see the AUTHORS
       file in the Perl source distribution.

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 https://rt.perl.org/ .  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 will 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.