=encoding utf8
+=for comment
+This has been completed up to 94a75ecf, except for 1b9f127-fad448f, which
+Karl Williamson says he will do.
+
=head1 NAME
[ this is a template for a new perldelta file. Any text flagged as
This document describes differences between the 5.13.8 release and
the 5.13.7 release.
-If you are upgrading from an earlier release such as 5.13.7, first read
+If you are upgrading from an earlier release such as 5.13.6, first read
L<perl5137delta>, which describes differences between 5.13.6 and
5.13.7.
[ List each enhancement as a =head2 entry ]
+=head2 C<-d:-foo> calls C<Devel::foo::unimport>
+
+The syntax C<-dI<B<:>foo>> was extended in 5.6.1 to make C<-dI<:fooB<=bar>>>
+equivalent to C<-MDevel::foo=bar>, which expands
+internally to C<use Devel::foo 'bar';>.
+F<perl> now allows prefixing the module name with C<->, with the same
+semantics as C<-M>, I<i.e.>
+
+=over 4
+
+=item C<-d:-foo>
+
+Equivalent to C<-M-Devel::foo>, expands to
+C<no Devel::foo;>, calls C<< Devel::foo->unimport() >>
+if the method exists.
+
+=item C<-d:-foo=bar>
+
+Equivalent to C<-M-Devel::foo=bar>, expands to C<no Devel::foo 'bar';>,
+calls C<< Devel::foo->unimport('bar') >> if the method exists.
+
+=back
+
+This is particularly useful to suppresses the default actions of a
+C<Devel::*> module's C<import> method whilst still loading it for debugging.
+
=head1 Security
XXX Any security-related notices go here. In particular, any security
=head1 Incompatible Changes
-XXX For a release on a stable branch, this section aspires to be:
+=head2 Attempting to use C<:=> as an empty attribute list is now a syntax error
+
+Previously C<my $pi := 4;> was exactly equivalent to C<my $pi : = 4;>,
+with the C<:> being treated as the start of an attribute list, ending before
+the C<=>. The use of C<:=> to mean C<: => was deprecated in 5.12.0, and is now
+a syntax error. This will allow the future use of C<:=> as a new token.
- There are no changes intentionally incompatible with 5.XXX.XXX. If any
- exist, they are bugs and reports are welcome.
+We find no Perl 5 code on CPAN using this construction, outside the core's
+tests for it, so we believe that this change will have very little impact on
+real-world codebases.
-[ List each incompatible change as a =head2 entry ]
+If it is absolutely necessary to have empty attribute lists (for example,
+because of a code generator) then avoid the error by adding a space before
+the C<=>.
=head1 Deprecations
[ List each deprecation as a =head2 entry ]
+=head2 C<?PATTERN?> is deprecated
+
+C<?PATTERN?> (without the initial m) has been deprecated and now produces
+a warning.
+
+=head2 C<sv_compile_2op> is now deprecated
+
+The C<sv_compile_2op> is now deprecated, and will be removed. Searches suggest
+that nothing on CPAN is using it, so this should have zero impact.
+
+It attempted to provide an API to compile code down to an optree, but failed
+to bind correctly to lexicals in the enclosing scope. It's not possible to
+fix this problem within the constraints of its parameters and return value.
+
=head1 Performance Enhancements
XXX Changes which enhance performance without changing behaviour go here. There
=item *
-XXX
+C<IPC::Cmd> has been upgraded from 0.64 to 0.66
+
+Resolves an issue with splitting Win32 command lines
+and documentation enhancements.
+
+=item *
+
+C<MIME::Base64> has been upgraded from 3.10 to 3.13
+
+Now provides encode_base64url and decode_base64url functions to process
+the base64 scheme for "URL applications".
+
+=item *
+
+C<overload> has been upgraded from 1.11 to 1.12.
+
+=item *
+
+C<PerlIO::scalar> has been upgraded from 0.10 to 0.11.
+
+A C<read> after a C<seek> beyond the end of the string no longer thinks it
+has data to read
+L<[perl #78716]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=78716>.
+
+=item *
+
+C<re> has been upgraded from 0.14 to 0.15.
+
+=item *
+
+C<Socket> has been upgraded from 1.91 to 1.92.
+
+It has several new functions for handling IPv6 addresses.
+
+=item *
+
+C<Time::HiRes> has been upgraded from 1.9721 to 1.9721_01.
+
+=item *
+
+C<Unicode::Collate> has been upgraded from 0.67 to 0.68
+
+=item *
+
+C<Unicode::UCD> has been upgraded from 0.29 to 0.30.
+
+=item *
+
+C<version> has been upgraded from 0.82 to 0.86.
=back
=item *
-XXX
+C<BEGIN {require 5.12.0}> now behaves as documented, rather than behaving
+identically to C<use 5.12.0;>. Previously, C<require> in a C<BEGIN> block
+was erroneously executing the C<use feature ':5.12.0'> and
+C<use strict; use warnings;> behaviour, which only C<use> was documented to
+provide
+L<[perl #69050]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=69050>.
+
+=item *
+
+C<use 5.42>
+L<[perl #69050]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=69050>,
+C<use 6> and C<no 5> no longer leak memory.
+
+=item *
+
+C<eval "BEGIN{die}"> no longer leaks memory on non-threaded builds.
+
+=item *
+
+PerlIO no longer crashes when called recursively, e.g., from a signal
+handler. Now it just leaks memory
+L<[perl #75556]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=75556>.
+
+=item *
+
+Defining a constant with the same name as one of perl's special blocks
+(e.g., INIT) stopped working in 5.12.0, but has now been fixed
+L<[perl #78634]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=78634>.
+
+=item *
+
+A reference to a literal value used as a hash key (C<$hash{\"foo"}>) used
+to be stringified, even if the hash was tied
+L<[perl #79178]|http://rt.perl.org/rt3/Public/Bug/Display.html?id=79178>.
=back
=item *
-XXX
+A number of bugs with regular expression bracketed character classes
+have been fixed, mostly having to do with matching characters in the
+non-ASCII Latin-1 range.
=back
https://perl5.git.perl.org / perl5.git / blobdiff