phpman > man > perl5224delta(1)

PERL5224DELTA(1)                  Perl Programmers Reference Guide                  PERL5224DELTA(1)



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 AT 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 AT 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.



perl v5.34.0                                 2025-07-25                             PERL5224DELTA(1)