similar within interpolated strings to mean C<$$ . "1">,
but still allowed it.
-In Perl 5.6 and later, C<"$$1"> always means C<"${$1}">.
+In Perl 5.6.0 and later, C<"$$1"> always means C<"${$1}">.
=item delete(), values() and C<\(%h)> operate on aliases to values, not copies
=head2 Unicode and UTF-8 support
-Perl can optionally use UTF-8 as its internal representation for character
+WARNING: This is an experimental feature. Implementation details are
+subject to change.
+
+Perl now uses UTF-8 as its internal representation for character
strings. The C<utf8> and C<bytes> pragmas are used to control this support
in the current lexical scope. See L<perlunicode>, L<utf8> and L<bytes> for
more information.
=head2 Interpreter cloning, threads, and concurrency
-WARNING: This is an experimental feature in a pre-alpha state. Use
-at your own risk.
+WARNING: This is an experimental feature. Implementation details are
+subject to change.
Perl 5.005_63 introduces the beginnings of support for running multiple
interpreters concurrently in different threads. In conjunction with
=head2 Lvalue subroutines
-WARNING: This is an experimental feature.
+WARNING: This is an experimental feature. Details are subject to change.
-change#4081
-[TODO - Ilya Zakharevich <ilya@math.ohio-state.edu>,
-Tuomas Lukka <lukka@iki.fi>)]
+Subroutines can now return modifiable lvalues.
+See L<perlsub/"Lvalue subroutines">.
=head2 "our" declarations
To use this feature, you need the WeakRef package from CPAN, which
contains additional documentation.
-change#3385, also need perlguts documentation
-[TODO - Tuomas Lukka <lukka@iki.fi>]
-
=head2 File globbing implemented internally
WARNING: This is currently an experimental feature. Interfaces and
F<AutoSplit.pm> and F<SelfLoader.pm> have been updated to keep the attributes
with the stubs they provide. See L<attributes>.
-=head2 Regular expression improvements
-
-change#2827,2373,2372,2365,1813,1800,4112,4158,4215,4301
-[TODO - Ilya Zakharevich <ilya@math.ohio-state.edu>]
-
-=head2 Overloading improvements
-
-change#2150
-[TODO - Ilya Zakharevich <ilya@math.ohio-state.edu>]
-
=head2 open() with more than two arguments
-[TODO - Ilya Zakharevich <ilya@math.ohio-state.edu>]
+If open() is passed three arguments instead of two, the second arguments
+is used as the mode and the third argument is taken to be the file name.
+This is primarily useful for protecting against unintended magic behavior
+of the traditional two-argument form. See L<perlfunc/open>.
=head2 Support for interpolating named characters
-change#4052
-[TODO - Ilya Zakharevich <ilya@math.ohio-state.edu>]
+The new C<\N> escape interpolates named characters within strings.
+For example, C<"Hi! \N{WHITE SMILING FACE}"> evaluates to a string
+with a unicode smiley face at the end.
=head2 C<require> and C<do> may be overridden
later method lookups from progressing into base packages.
This has been corrected.
-=head2 Consistent numeric conversions
-
-change#3378,3318
-[TODO - Ilya Zakharevich <ilya@math.ohio-state.edu>]
-
=head2 Taint failures under C<-U>
When running in unsafe mode, taint violations could sometimes
optimized to directly set the lexical variable on the LHS,
eliminating redundant copying overheads.
-=head2 Faster mechanism to invoke XSUBs
-
-change#4044,4125
-[TODO - Ilya Zakharevich <ilya@math.ohio-state.edu>]
-
-=head2 Perl_malloc() improvements
-
-change#4237
-[TODO - Ilya Zakharevich <ilya@math.ohio-state.edu>]
-
=head2 Faster subroutine calls
Minor changes in how subroutine calls are handled internally
=back
-=head2 OS/2
-
-[TODO - Ilya Zakharevich <ilya@math.ohio-state.edu>]
-
=head2 OS390 (OpenEdition MVS)
Support for this EBCDIC platform has not been renewed in this release.
=head2 Win32
-Site library searches failed to look for ".../site/5.XXX/lib"
-if ".../site/5.XXXYY/lib" wasn't found. This has been corrected.
+Perl can now emulate fork() with multiple interpreters. This support
+must be enabled at build time. See L<perlfork> for detailed information.
When given a pathname that consists only of a drivename, such
as C<A:>, opendir() and stat() now use the current working
a C<use File::DosGlob;> in your program. For details and compatibility
information, see L<File::Glob>.
-[TODO - GSAR]
-
=head1 New tests
=over 4
=item charnames
-change#4052
-[TODO - Ilya Zakharevich <ilya@math.ohio-state.edu>]
+This pragma implements the C<\N> string escape. See L<charnames>.
=item Data::Dumper
Env now supports accessing environment variables like PATH as array
variables.
-=item ExtUtils::MakeMaker
-
-change#4135, also needs docs in module pod
-[TODO - Ilya Zakharevich <ilya@math.ohio-state.edu>]
-
=item Fcntl
More Fcntl constants added: F_SETLK64, F_SETLKW64, O_LARGEFILE for
for advanced users of Pod::Parser that need more about a command besides
its name and text.
-As of release 5.6 of Perl, Pod::Parser is now the officially sanctioned
+As of release 5.6.0 of Perl, Pod::Parser is now the officially sanctioned
"base parser code" recommended for use by all pod2xxx translators.
Pod::Text (pod2text) and Pod::Man (pod2man) have already been converted
to use Pod::Parser and efforts to convert Pod::HTML (pod2html) are already
backward-compatibility. It's been replaced by the C<sub : attributes>
syntax. See L<perlsub/"Subroutine Attributes"> and L<attributes>.
-C<use utf8> to enable UTF-8 and Unicode support.
-
Lexical warnings pragma, C<use warnings;>, to control optional warnings.
See L<perllexwarn>.
=head1 Utility Changes
-=head2 h2ph
-
-[TODO - Kurt Starsinic <kstar@chapin.edu>]
-
=head2 perlcc
C<perlcc> now supports the C and Bytecode backends. By default,
Support for non-Unix platforms has been improved.
-=head2 h2xs
-
-change#4232
-[TODO - Ilya Zakharevich <ilya@math.ohio-state.edu>]
-
=head1 Documentation Changes
=over 4