[ this is a template for a new perldelta file. Any text flagged as XXX needs
to be processed before release. ]
-perldelta - what is new for perl v5.21.1
+perldelta - what is new for perl v5.21.3
=head1 DESCRIPTION
-This document describes differences between the 5.21.0 release and the 5.21.1
+This document describes differences between the 5.21.2 release and the 5.21.3
release.
-If you are upgrading from an earlier release such as 5.20.0, first read
-L<perl5210delta>, which describes differences between 5.20.0 and 5.21.0.
+If you are upgrading from an earlier release such as 5.21.1, first read
+L<perl5212delta>, which describes differences between 5.21.1 and 5.21.2.
=head1 Notice
[ List each enhancement as a =head2 entry ]
-=head2 C<qr/foo/x> now ignores any Unicode pattern white space
-
-The C</x> regular expression modifier allows the pattern to contain
-white space and comments, both of which are ignored, for improved
-readability. Until now, not all the white space characters that Unicode
-designates for this purpose were handled. The additional ones now
-recognized are
-U+0085 NEXT LINE,
-U+200E LEFT-TO-RIGHT MARK,
-U+200F RIGHT-TO-LEFT MARK,
-U+2028 LINE SEPARATOR,
-and
-U+2029 PARAGRAPH SEPARATOR.
-
=head1 Security
XXX Any security-related notices go here. In particular, any security
If any exist, they are bugs, and we request that you submit a
report. See L</Reporting Bugs> below.
-=head2 In double-quotish C<\cI<X>>, I<X> must now be a printable ASCII character
-
-In prior releases, failure to do this raised a deprecation warning.
-
-=head2 Splitting the tokens C<(?> and C<(*> in regular expressions is
-now a fatal compilation error.
-
-These had been deprecated since v5.18.
-
-=head2 5 additional characters are treated as white space under C</x> in
-regex patterns (unless escaped)
-
-The use of these characters with C</x> outside bracketed character
-classes and when not preceeded by a backslash has raised a deprecation
-warning since v5.18. Now they will be ignored. See L</qrE<sol>fooE<sol>x>
-for the list of the five characters.
-
-=head2 Comment lines within S<C<(?[ ])>> now are ended only by a C<\n>
+[ List each incompatible change as a =head2 entry ]
-S<C<(?[ ])>> is an experimental feature, introduced in v5.18. It operates
-as if C</x> is always enabled. But there was a difference, comment
-lines (following a C<#> character) were terminated by anything matching
-C<\R> which includes all vertical whitespace, such as form feeds. For
-consistency, this is now changed to match what terminates comment lines
-outside S<C<(?[ ])>>, namely a C<\n> (even if escaped), which is the
-same as what terminates a heredoc string and formats.
+=head2 S<C<use UNIVERSAL '...'>> is now a fatal error
-=head2 Omitting % and @ on hash and array names is no longer permitted
-
-Really old Perl let you omit the @ on array names and the % on hash
-names in some spots. This has issued a deprecation warning since Perl
-5.0, and is no longer permitted.
+Importing functions from C<UNIVERSAL> has been deprecated since v5.12, and
+is now a fatal error. S<C<"use UNIVERSAL">> without any arguments is still
+allowed.
=head1 Deprecations
XXX Any deprecated features, syntax, modules etc. should be listed here.
-=head2 Using a NO-BREAK space in a character alias for C<\N{...}> is now
-deprecated
-
-This non-graphic character is essentially indistinguishable from a
-regular space, and so should not be allowed. See
-L<charnames/CUSTOM ALIASES>.
-
=head2 Module removals
XXX Remove this section if inapplicable.
=item *
-L<Carp> has been upgraded from version 1.3301 to 1.34.
-
-Carp::Heavy now ignores version mismatches with Carp if Carp is newer
-than 1.12, since Carp::Heavy's guts were merged into Carp at that
-point.
-L<[perl #121574]|https://rt.perl.org/Ticket/Display.html?id=121574>
-
-=item *
-
-L<Encode> has been upgraded from version 2.60_01 to 2.62.
+L<ExtUtils::Manifest> has been upgraded from version 1.64 to 1.65.
-B<piconv> now has better error handling when the encoding name is nonexistent,
-and a build breakage when upgrading L<Encode> in perl-5.8.2 and earlier has
-been fixed.
+The MANIFEST is now opened with C<:raw>, to prevent C<CRLF>s leaking in.
=item *
-The libnet collection of modules has been upgraded from version 1.25 to 1.27.
+L<perl5db.pl> has been upgraded from version 1.45 to 1.46.
-There are only whitespace changes to the installed files.
+Fixed the scope level handling of the debugger's C<y> command.
=item *
-The Locale-Codes collection of modules has been upgraded from vesion 3.30 to 3.31.
+L<POSIX> has been upgraded from version 1.41 to 1.42.
-Fixed a bug in the scripts used to extract data from spreadsheets that
-prevented the SHP currency code from being found.
-L<[cpan #94229]|https://rt.cpan.org/Ticket/Display.html?id=94229>
+Replaced the thread-unsafe code used to prevent duplicate warning
+messages for using the isxxx() functions. [perl #122476]
=item *
-L<Math::BigInt> has been upgraded from version 1.9993 to 1.9994.
-
-Synchronize POD changes from the CPAN release.
-
-C<< Math::BigFloat->blog(x) >> would sometimes return blog(2*x) when
-the accuracy was greater than 70 digits.
-
-The result of C<< Math::BigFloat->bdiv() >> in list context now
-satisfies C<< x = quotient * divisor + remainder >>.
-
-=item *
-
-L<Math::BigRat> has been upgraded from version 0.2606 to 0.2607.
-
-Synchronize POD changes from the CPAN release.
-
-=item *
-
-L<Module::Metadata> has been upgraded from version 1.000022 to 1.000024.
-
-Support installations on older perls with an L<ExtUtils::MakeMaker> earlier
-than 6.63_03
-
-=item *
-
-L<perl5db.pl> has been upgraded from version 1.44 to 1.45.
-
-=item *
-
-A mismatch between the documentation and the code in utf8::downgrade()
-was fixed in favour of the documentation. The optional second argument
-is now correctly treated as a perl boolean (true/false semantics) and
-not as an integer.
-
-=item *
-
-fork() in the debugger under C<tmux> will now create a new window for
-the forked process. L<[perl
-#121333]|https://rt.perl.org/Ticket/Display.html?id=121333>
-
-The debugger now saves the current working directory on startup and
-restores it when you restart your program with C<R> or <rerun>. L<[perl
-#121509]|https://rt.perl.org/Ticket/Display.html?id=121509>
-
-L<Unicode::Collate> has been upgraded from version 1.04 to 1.07.
-
-Version 0.67's improved discontiguous contractions is invalidated by default
-and is supported as a parameter 'long_contraction'.
-
-=item *
-
-L<Unicode::Normalize> has been upgraded from version 1.17 to 1.18.
-
-The XSUB implementation has been removed in favour of pure Perl.
-
-=item *
-
-L<Hash::Util> has been upgraded from version 0.16 to 0.17.
-
-Minor bug fixes and documentation fixes to Hash::Util::hash_stats()
+L<Socket> has been upgraded from version 2.014 to 2.015.
+Test suite updates, particularly useful for Solaris and cygwin, and
+a slight change to the pattern used for IPv4 address matching.
=back
=item *
-L<Unsuccessful %s on filename containing newline|perldiag/"Unsuccessful %s on filename containing newline">
-
-This warning is now only produced when the newline is at the end of
-the filename.
+XXX Describe change here
=back
=head1 Utility Changes
XXX Changes to installed programs such as F<perlbug> and F<xsubpp> go here.
-Most of these are built within the directories F<utils> and F<x2p>.
+Most of these are built within the directory F<utils>.
[ List utility changes as a =head2 entry for each utility and =item
entries for each change
significant internal changes for future core maintainers should be noted as
well.
+[ List each change as a =item entry ]
+
=over 4
=item *
-The deprecated variable C<PL_sv_objcount> has been removed.
+Added L<perlapi/sync_locale>.
+Changing the program's locale should be avoided by XS code. Nevertheless,
+certain non-Perl libraries called from XS, such as C<Gtk> do so. When this
+happens, Perl needs to be told that the locale has changed. Use this function
+to do so, before returning to Perl.
=back
=item *
-index() and rindex() no longer crash when used on strings over 2GB in
-size.
-L<[perl #121562]|https://rt.perl.org/Ticket/Display.html?id=121562>.
-
-=item *
-
-A small previously intentional memory leak in PERL_SYS_INIT/PERL_SYS_INIT3 on
-Win32 builds was fixed. This might affect embedders who repeatedly create and
-destroy perl engines within the same process.
-
-=item *
-
-C<POSIX::localeconv()> now returns the data for the program's underlying
-locale even when called from outside the scope of S<C<use locale>>.
-
-=item *
-
-C<POSIX::localeconv()> now works properly on platforms which don't have
-C<LC_NUMERIC> and/or C<LC_MONETARY>, or for which Perl has been compiled
-to disregard either or both of these locale categories. In such
-circumstances, there are now no entries for the corresponding values in
-the hash returned by C<localeconv()>.
+Failing to compile C<use Foo> in an eval could leave a spurious
+C<BEGIN> subroutine definition, which would produce a "Subroutine
+BEGIN redefined" warning on the next use of C<use>, or other C<BEGIN>
+block. [perl #122107]
=item *
-C<POSIX::localeconv()> now marks appropriately the values it returns as
-UTF-8 or not. Previously they were always returned as a bytes, even if
-they were supposed to be encoded as UTF-8.
+C<method { BLOCK } ARGS> syntax now correctly parses the arguments if they
+begin with an opening brace. [perl #46947]
=back
XXX Generate this with:
- perl Porting/acknowledgements.pl v5.21.1..HEAD
+ perl Porting/acknowledgements.pl v5.21.2..HEAD
=head1 Reporting Bugs
https://perl5.git.perl.org / perl5.git / blobdiff