200 lines
6.1 KiB
Plaintext
200 lines
6.1 KiB
Plaintext
=encoding utf8
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=head1 NAME
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perl5282delta - what is new for perl v5.28.2
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=head1 DESCRIPTION
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This document describes differences between the 5.28.1 release and the 5.28.2
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release.
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If you are upgrading from an earlier release such as 5.28.0, first read
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L<perl5281delta>, which describes differences between 5.28.0 and 5.28.1.
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=head1 Incompatible Changes
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=head2 Any set of digits in the Common script are legal in a script run of
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another script
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There are several sets of digits in the Common script. C<[0-9]> is the most
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familiar. But there are also C<[\x{FF10}-\x{FF19}]> (FULLWIDTH DIGIT ZERO -
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FULLWIDTH DIGIT NINE), and several sets for use in mathematical notation, such
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as the MATHEMATICAL DOUBLE-STRUCK DIGITs. Any of these sets should be able to
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appear in script runs of, say, Greek. But the previous design overlooked all
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but the ASCII digits C<[0-9]>, so the design was flawed. This has been fixed,
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so is both a bug fix and an incompatibility.
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All digits in a run still have to come from the same set of ten digits.
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L<[perl #133547]|https://rt.perl.org/Ticket/Display.html?id=133547>
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=head1 Modules and Pragmata
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=head2 Updated Modules and Pragmata
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=over 4
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=item *
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L<Module::CoreList> has been upgraded from version 5.20181129_28 to 5.20190419.
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=item *
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L<PerlIO::scalar> has been upgraded from version 0.29 to 0.30.
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=item *
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L<Storable> has been upgraded from version 3.08 to 3.08_01.
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=back
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=head1 Platform Support
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=head2 Platform-Specific Notes
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=over 4
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=item Windows
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The Windows Server 2003 SP1 Platform SDK build, with its early x64 compiler and
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tools, was accidentally broken in Perl 5.27.9. This has now been fixed.
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=item Mac OS X
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Perl's build and testing process on Mac OS X for C<-Duseshrplib> builds is now
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compatible with Mac OS X System Integrity Protection (SIP).
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SIP prevents binaries in F</bin> (and a few other places) being passed the
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C<DYLD_LIBRARY_PATH> environment variable. For our purposes this prevents
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C<DYLD_LIBRARY_PATH> from being passed to the shell, which prevents that
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variable being passed to the testing or build process, so running C<perl>
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couldn't find F<libperl.dylib>.
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To work around that, the initial build of the F<perl> executable expects to
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find F<libperl.dylib> in the build directory, and the library path is then
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adjusted during installation to point to the installed library.
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L<[perl #126706]|https://rt.perl.org/Ticket/Display.html?id=126706>
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=back
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=head1 Selected Bug Fixes
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=over 4
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=item *
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If an in-place edit is still in progress during global destruction and the
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process exit code (as stored in C<$?>) is zero, perl will now treat the
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in-place edit as successful, replacing the input file with any output produced.
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This allows code like:
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perl -i -ne 'print "Foo"; last'
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to replace the input file, while code like:
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perl -i -ne 'print "Foo"; die'
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will not. Partly resolves [perl #133659].
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L<[perl #133659]|https://rt.perl.org/Ticket/Display.html?id=133659>
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=item *
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A regression in Perl 5.28 caused the following code to fail
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close(STDIN); open(CHILD, "|wc -l")'
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because the child's stdin would be closed on exec. This has now been fixed.
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=item *
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C<pack "u", "invalid uuencoding"> now properly NUL terminates the zero-length
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SV produced.
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L<[perl #132655]|https://rt.perl.org/Ticket/Display.html?id=132655>
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=item *
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Failing to compile a format now aborts compilation. Like other errors in
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sub-parses this could leave the parser in a strange state, possibly crashing
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perl if compilation continued.
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L<[perl #132158]|https://rt.perl.org/Ticket/Display.html?id=132158>
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=item *
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See L</Any set of digits in the Common script are legal in a script run of
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another script>.
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=back
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=head1 Acknowledgements
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Perl 5.28.2 represents approximately 4 months of development since Perl 5.28.1
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and contains approximately 2,500 lines of changes across 75 files from 13
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authors.
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Excluding auto-generated files, documentation and release tools, there were
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approximately 1,200 lines of changes to 29 .pm, .t, .c and .h files.
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Perl continues to flourish into its fourth decade thanks to a vibrant community
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of users and developers. The following people are known to have contributed
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the improvements that became Perl 5.28.2:
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Aaron Crane, Abigail, Andy Dougherty, David Mitchell, Karen Etheridge, Karl
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Williamson, Leon Timmermans, Nicolas R., Sawyer X, Steve Hay, Tina Müller,
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Tony Cook, Zak B. Elep.
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The list above is almost certainly incomplete as it is automatically generated
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from version control history. In particular, it does not include the names of
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the (very much appreciated) contributors who reported issues to the Perl bug
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tracker.
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Many of the changes included in this version originated in the CPAN modules
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included in Perl's core. We're grateful to the entire CPAN community for
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helping Perl to flourish.
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For a more complete list of all of Perl's historical contributors, please see
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the F<AUTHORS> file in the Perl source distribution.
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=head1 Reporting Bugs
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If you find what you think is a bug, you might check the perl bug database
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at L<https://rt.perl.org/> . There may also be information at
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L<http://www.perl.org/> , the Perl Home Page.
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If you believe you have an unreported bug, please run the L<perlbug> program
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included with your release. Be sure to trim your bug down to a tiny but
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sufficient test case. Your bug report, along with the output of C<perl -V>,
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will be sent off to perlbug@perl.org to be analysed by the Perl porting team.
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If the bug you are reporting has security implications which make it
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inappropriate to send to a publicly archived mailing list, then see
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L<perlsec/SECURITY VULNERABILITY CONTACT INFORMATION>
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for details of how to report the issue.
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=head1 Give Thanks
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If you wish to thank the Perl 5 Porters for the work we had done in Perl 5,
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you can do so by running the C<perlthanks> program:
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perlthanks
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This will send an email to the Perl 5 Porters list with your show of thanks.
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=head1 SEE ALSO
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The F<Changes> file for an explanation of how to view exhaustive details on
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what changed.
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The F<INSTALL> file for how to build Perl.
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The F<README> file for general stuff.
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The F<Artistic> and F<Copying> files for copyright information.
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=cut
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