perldelta - what is new for perl v5.22.3
This document describes differences between the 5.22.2 release and the 5.22.3 release.
If you are upgrading from an earlier release such as 5.22.1, first read perl5222delta, which describes differences between 5.22.1 and 5.22.2.
Previously PerlIO debugging output would be sent to the file specified by the PERLIO_DEBUG environment variable if perl wasn't running setuid and the -T or -t switches hadn't been parsed yet.
PERLIO_DEBUG
If perl performed output at a point where it hadn't yet parsed its switches this could result in perl creating or overwriting the file named by PERLIO_DEBUG even when the -T switch had been supplied.
Perl now requires the -Di switch to produce PerlIO debugging output. By default this is written to stderr, but can optionally be redirected to a file by setting the PERLIO_DEBUG environment variable.
stderr
If perl is running setuid or the -T switch was supplied PERLIO_DEBUG is ignored and the debugging output is sent to stderr as for any other -D switch.
There are no changes intentionally incompatible with Perl 5.22.2. If any exist, they are bugs, and we request that you submit a report. See "Reporting Bugs" below.
Module::CoreList has been upgraded from version 5.20160429 to 5.20160730_22.
The documentation of PERLIO_DEBUG has been updated.
The new -Di switch has been documented, and the documentation of PERLIO_DEBUG has been updated.
A new test script, t/run/switchDx.t, has been added to test that the new -Di switch is working correctly.
Perl 5.22.3 represents approximately 3 months of development since Perl 5.22.2 and contains approximately 2,000 lines of changes across 49 files from 15 authors.
Excluding auto-generated files, documentation and release tools, there were approximately 650 lines of changes to 12 .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 5.22.3:
Abigail, Alex Vandiver, Aristotle Pagaltzis, Craig A. Berry, Father Chrysostomos, James E Keenan, Karen Etheridge, Karl Williamson, Matthew Horsfall, Niko Tyni, 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.
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.
perl -V
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.
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.
To install vars, copy and paste the appropriate command in to your terminal.
cpanm
cpanm vars
CPAN shell
perl -MCPAN -e shell install vars
For more information on module installation, please visit the detailed CPAN module installation guide.