Provided by: perl-doc_5.30.0-9ubuntu0.5_all 
NAME
perl5242delta - what is new for perl v5.24.2
DESCRIPTION
This document describes differences between the 5.24.1 release and the 5.24.2 release.
If you are upgrading from an earlier release such as 5.24.0, first read perl5241delta,
which describes differences between 5.24.0 and 5.24.1.
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 5.24.1, 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 2.23 to 2.23_01.
• Module::CoreList has been upgraded from version 5.20170114_24 to 5.20170715_24.
Selected Bug Fixes
• Fixed a crash with "s///l" where it thought it was dealing with UTF-8 when it wasn't.
[perl #129038] <https://rt.perl.org/Ticket/Display.html?id=129038>
Acknowledgements
Perl 5.24.2 represents approximately 6 months of development since Perl 5.24.1 and
contains approximately 2,500 lines of changes across 53 files from 18 authors.
Excluding auto-generated files, documentation and release tools, there were approximately
960 lines of changes to 17 .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 5.24.2:
Aaron Crane, Abigail, Aristotle Pagaltzis, Chris 'BinGOs' Williams, Dan Collins, 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, Yves Orton.
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 see "SECURITY VULNERABILITY CONTACT INFORMATION"
in perlsec for details of how to report the issue.
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.