you are taking responsibility for any breakage that future changes to, or
removal of, the feature may cause.
+Since some features (like C<~~> or C<my $_>) now emit experimental warnings,
+and you may want to disable them in code that is also run on perls that do not
+recognize these warning categories, consider using the C<if> pragma like this:
+
+ no if $] >= 5.018, 'warnings', "experimental::feature_name";
+
Existing experimental features may begin emitting these warnings, too. Please
consult L<perlexperiment> for information on which features are considered
experimental.
instead the value is expected to be a binary value encoded in a hex
string, such as "0xf5867c55039dc724". This is to make the
infrastructure support hash seeds of arbitrary lengths, which might
-exceed that of an integer. (SipHash uses a 16 byte seed).
+exceed that of an integer. (SipHash uses a 16 byte seed.)
=head3 PERL_PERTURB_KEYS environment variable added
Hash::Util::hash_seed() now returns a string instead of an integer. This
is to make the infrastructure support hash seeds of arbitrary lengths
-which might exceed that of an integer. (SipHash uses a 16 byte seed).
+which might exceed that of an integer. (SipHash uses a 16 byte seed.)
=head3 Output of PERL_HASH_SEED_DEBUG has been changed
my $undraftable = "\N{4F}"; # Syntax error!
-or to have commas anywhere in the name. See L<charnames/CUSTOM ALIASES>
+or to have commas anywhere in the name. See L<charnames/CUSTOM ALIASES>.
=head2 C<\N{BELL}> now refers to U+1F514 instead of U+0007
Unicode has now withdrawn their previous recommendation for regular
expressions to automatically handle cases where a single character can
-match multiple characters case-insensitively, for example the letter
+match multiple characters case-insensitively, for example, the letter
LATIN SMALL LETTER SHARP S and the sequence C<ss>. This is because
it turns out to be impracticable to do this correctly in all
circumstances. Because Perl has tried to do this as best it can, it
still uses lexical C<$_> if there is lexical C<$_> in scope (again, just like
C<foreach>) [perl #114020].
+=head2 The smartmatch family of features are now experimental
+
+Smart match, added in v5.10.0 and significantly revised in v5.10.1, has been
+a regular point of complaint. Although there are a number of ways in which
+it is useful, it has also proven problematic and confusing for both users and
+implementors of Perl. There have been a number of proposals on how to best
+address the problem. It is clear that smartmatch is almost certainly either
+going to change or go away in the future. Relying on its current behavior
+is not recommended.
+
+Warnings will now be issued when the parser sees C<~~>, C<given>, or C<when>.
+To disable these warnings, you can add this line to the appropriate scope:
+
+ no if $] >= 5.018, "experimental::smartmatch";
+
+Consider, though, replacing the use of these features, as they may change
+behavior again before becoming stable.
+
=head2 Lexical C<$_> is now experimental
Since it was introduced in Perl v5.10, it has caused much confusion with no
=head2 Defined values stored in environment are forced to byte strings
A value stored in an environment variable has always been stringified. In this
-release, it is converted to be only a byte string. First, it is forced to be a
+release, it is converted to be only a byte string. First, it is forced to be
only a string. Then if the string is utf8 and the equivalent of
C<utf8::downgrade()> works, that result is used; otherwise, the equivalent of
C<utf8::encode()> is used, and a warning is issued about wide characters
=head2 C<split>'s first argument is more consistently interpreted
After some changes earlier in v5.17, C<split>'s behavior has been
-simplified: if the PATTERN argument evaluates to a literal string
+simplified: if the PATTERN argument evaluates to a string
containing one space, it is treated the way that a I<literal> string
containing one space once was.
missing characters will raise a deprecation warning, unless turned off.
The five characters 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.
+ U+0085 NEXT LINE
+ U+200E LEFT-TO-RIGHT MARK
+ U+200F RIGHT-TO-LEFT MARK
+ U+2028 LINE SEPARATOR
+ U+2029 PARAGRAPH SEPARATOR
=head2 User-defined charnames with surprising whitespace
=head2 Pre-PerlIO IO implementations
-Perl supports being built without PerlIO proper, using a stdio or sfio
-wrapper instead. A perl build like this will not support IO layers and
-thus Unicode IO, making it rather handicapped.
+In theory, you can currently build perl without PerlIO. Instead, you'd use a
+wrapper around stdio or sfio. In practice, this isn't very useful. It's not
+well tested, and without any support for IO layers or (thus) Unicode, it's not
+much of a perl. Building without PerlIO will most likely be removed in the
+next version of perl.
-PerlIO supports a C<stdio> layer if stdio use is desired, and similarly a
-sfio layer could be produced.
+PerlIO supports a C<stdio> layer if stdio use is desired. Similarly a
+sfio layer could be produced in the future, if needed.
=head1 Future Deprecations
Perl's future on them, please contact us.
We believe that Perl has long been unable to build on mixed endian
-architectures (such as PDP-11s), and intend to remove any remain
+architectures (such as PDP-11s), and intend to remove any remaining
support code. Similarly, code supporting the long umaintained GNU
dld will be removed soon if no-one makes themselves known as an
active user.
You can substitute your favorite version in place of C<5.16.0>, too.
+=over
+
+=item *
+
+L<Archive::Extract> has been upgraded to 0.68.
+
+Work around an edge case on Linux with Busybox's unzip.
+
+=item *
+
+L<Archive::Tar> has been upgraded to 1.90.
+
+ptar now supports the -T option as well as dashless options
+[rt.cpan.org #75473], [rt.cpan.org #75475].
+
+Auto-encode filenames marked as UTF-8 [rt.cpan.org #75474].
+
+Don't use C<tell> on L<IO::Zlib> handles [rt.cpan.org #64339].
+
+Don't try to C<chown> on symlinks.
+
+=item *
+
+L<autodie> has been upgraded to 2.13.
+
+C<autodie> now plays nicely with the 'open' pragma.
+
+=item *
+
+L<B> has been upgraded to 1.42.
+
+The C<stashoff> method of COPs has been added. This provides access to an
+internal field added in perl 5.16 under threaded builds [perl #113034].
+
+C<B::COP::stashpv> now supports UTF-8 package names and embedded NULs.
+
+All C<CVf_*> and C<GVf_*>
+and more SV-related flag values are now provided as constants in the C<B::>
+namespace and available for export. The default export list has not changed.
+
+This makes the module work with the new pad API.
+
+=item *
+
+L<B::Concise> has been upgraded to 0.95.
+
+The C<-nobanner> option has been fixed, and C<format>s can now be dumped.
+When passed a sub name to dump, it will check also to see whether it
+is the name of a format. If a sub and a format share the same name,
+it will dump both.
+
+This adds support for the new C<OpMAYBE_TRUEBOOL> and C<OPpTRUEBOOL> flags.
+
+=item *
+
+L<B::Debug> has been upgraded to 1.18.
+
+This adds support (experimentally) for C<B::PADLIST>, which will be
+added in Perl 5.17.4.
+
+=item *
+
+L<B::Deparse> has been upgraded to 1.20.
+
+Avoid warning when run under C<perl -w>.
+
+It now deparses
+loop controls with the correct precedence, and multiple statements in a
+C<format> line are also now deparsed correctly.
+
+This release suppresses trailing semicolons in formats.
+
+This release adds stub deparsing for lexical subroutines.
+
+It no longer dies when deparsing C<sort> without arguments. It now
+correctly omits the comma for C<system $prog @args> and C<exec $prog
+@args>.
+
+=item *
+
+L<bignum>, L<bigint> and L<bigrat> have been upgraded to 0.33.
+
+The overrides for C<hex> and C<oct> have been rewritten, eliminating
+several problems, and making one incompatible change:
+
+=over
+
+=item *
+
+Formerly, whichever of C<use bigint> or C<use bigrat> was compiled later
+would take precedence over the other, causing C<hex> and C<oct> not to
+respect the other pragma when in scope.
+
+=item *
+
+Using any of these three pragmata would cause C<hex> and C<oct> anywhere
+else in the program to evalute their arguments in list context and prevent
+them from inferring $_ when called without arguments.
+
+=item *
+
+Using any of these three pragmata would make C<oct("1234")> return 1234
+(for any number not beginning with 0) anywhere in the program. Now "1234"
+is translated from octal to decimal, whether within the pragma's scope or
+not.
+
+=item *
+
+The global overrides that facilitate lexical use of C<hex> and C<oct> now
+respect any existing overrides that were in place before the new overrides
+were installed, falling back to them outside of the scope of C<use bignum>.
+
+=item *
+
+C<use bignum "hex">, C<use bignum "oct"> and similar invocations for bigint
+and bigrat now export a C<hex> or C<oct> function, instead of providing a
+global override.
+
+=back
+
+=item *
+
+L<Carp> has been upgraded to 1.29.
+
+Carp is no longer confused when C<caller> returns undef for a package that
+has been deleted.
+
+The C<longmess()> and C<shortmess()> functions are now documented.
+
+=item *
+
+L<CGI> has been upgraded to 3.63.
+
+Unrecognized HTML escape sequences are now handled better, problematic
+trailing newlines are no longer inserted after E<lt>formE<gt> tags
+by C<startform()> or C<start_form()>, and bogus "Insecure Dependency"
+warnings appearing with some versions of perl are now worked around.
+
+=item *
+
+L<Class::Struct> has been upgraded to 0.64.
+
+The constructor now respects overridden accessor methods [perl #29230].
+
+=item *
+
+L<Compress::Raw::Bzip2> has been upgraded to 2.060.
+
+The misuse of Perl's "magic" API has been fixed.
+
+=item *
+
+L<Compress::Raw::Zlib> has been upgraded to 2.060.
+
+Upgrade bundled zlib to version 1.2.7.
+
+Fix build failures on Irix, Solaris, and Win32, and also when building as C++
+[rt.cpan.org #69985], [rt.cpan.org #77030], [rt.cpan.org #75222].
+
+The misuse of Perl's "magic" API has been fixed.
+
+C<compress()>, C<uncompress()>, C<memGzip()> and C<memGunzip()> have
+been speeded up by making parameter validation more efficient.
+
+=item *
+
+L<CPAN::Meta::Requirements> has been upgraded to 2.122.
+
+Treat undef requirements to C<from_string_hash> as 0 (with a warning).
+
+Added C<requirements_for_module> method.
+
+=item *
+
+L<CPANPLUS> has been upgraded to 0.9135.
+
+Allow adding F<blib/script> to PATH.
+
+Save the history between invocations of the shell.
+
+Handle multiple C<makemakerargs> and C<makeflags> arguments better.
+
+This resolves issues with the SQLite source engine.
+
+=item *
+
+L<Data::Dumper> has been upgraded to 2.145.
+
+It has been optimized to only build a seen-scalar hash as necessary,
+thereby speeding up serialization drastically.
+
+Additional tests were added in order to improve statement, branch, condition
+and subroutine coverage. On the basis of the coverage analysis, some of the
+internals of Dumper.pm were refactored. Almost all methods are now
+documented.
+
+=item *
+
+L<DB_File> has been upgraded to 1.827.
+
+The main Perl module no longer uses the C<"@_"> construct.
+
+=item *
+
+L<Devel::Peek> has been upgraded to 1.11.
+
+This fixes compilation with C++ compilers and makes the module work with
+the new pad API.
+
+=item *
+
+L<Digest::MD5> has been upgraded to 2.52.
+
+Fix C<Digest::Perl::MD5> OO fallback [rt.cpan.org #66634].
+
+=item *
+
+L<Digest::SHA> has been upgraded to 5.84.
+
+This fixes a double-free bug, which might have caused vulnerabilities
+in some cases.
+
+=item *
+
+L<DynaLoader> has been upgraded to 1.18.
+
+This is due to a minor code change in the XS for the VMS implementation.
+
+This fixes warnings about using C<CODE> sections without an C<OUTPUT>
+section.
+
+=item *
+
+L<Encode> has been upgraded to 2.49.
+
+The Mac alias x-mac-ce has been added, and various bugs have been fixed
+in Encode::Unicode, Encode::UTF7 and Encode::GSM0338.
+
+=item *
+
+L<Env> has been upgraded to 1.04.
+
+Its SPLICE implementation no longer misbehaves in list context.
+
+=item *
+
+L<ExtUtils::CBuilder> has been upgraded to 0.280210.
+
+Manifest files are now correctly embedded for those versions of VC++ which
+make use of them. [perl #111782, #111798].
+
+A list of symbols to export can now be passed to C<link()> when on
+Windows, as on other OSes [perl #115100].
+
+=item *
+
+L<ExtUtils::ParseXS> has been upgraded to 3.18.
+
+The generated C code now avoids unnecessarily incrementing
+C<PL_amagic_generation> on Perl versions where it's done automatically
+(or on current Perl where the variable no longer exists).
+
+This avoids a bogus warning for initialised XSUB non-parameters [perl
+#112776].
+
+=item *
+
+L<File::Copy> has been upgraded to 2.26.
+
+C<copy()> no longer zeros files when copying into the same directory,
+and also now fails (as it has long been documented to do) when attempting
+to copy a file over itself.
+
+=item *
+
+L<File::DosGlob> has been upgraded to 1.10.
+
+The internal cache of file names that it keeps for each caller is now
+freed when that caller is freed. This means
+C<< use File::DosGlob 'glob'; eval 'scalar <*>' >> no longer leaks memory.
+
+=item *
+
+L<File::Fetch> has been upgraded to 0.38.
+
+Added the 'file_default' option for URLs that do not have a file
+component.
+
+Use C<File::HomeDir> when available, and provide C<PERL5_CPANPLUS_HOME> to
+override the autodetection.
+
+Always re-fetch F<CHECKSUMS> if C<fetchdir> is set.
+
+=item *
+
+L<File::Find> has been upgraded to 1.23.
+
+This fixes inconsistent unixy path handling on VMS.
+
+Individual files may now appear in list of directories to be searched
+[perl #59750].
+
+=item *
+
+L<File::Glob> has been upgraded to 1.20.
+
+File::Glob has had exactly the same fix as File::DosGlob. Since it is
+what Perl's own C<glob> operator itself uses (except on VMS), this means
+C<< eval 'scalar <*>' >> no longer leaks.
+
+A space-separated list of patterns return long lists of results no longer
+results in memory corruption or crashes. This bug was introduced in
+Perl 5.16.0. [perl #114984]
+
+=item *
+
+L<File::Spec::Unix> has been upgraded to 3.40.
+
+C<abs2rel> could produce incorrect results when given two relative paths or
+the root directory twice [perl #111510].
+
+=item *
+
+L<File::stat> has been upgraded to 1.07.
+
+C<File::stat> ignores the L<filetest> pragma, and warns when used in
+combination therewith. But it was not warning for C<-r>. This has been
+fixed [perl #111640].
+
+C<-p> now works, and does not return false for pipes [perl #111638].
+
+Previously C<File::stat>'s overloaded C<-x> and C<-X> operators did not give
+the correct results for directories or executable files when running as
+root. They had been treating executable permissions for root just like for
+any other user, performing group membership tests I<etc> for files not owned
+by root. They now follow the correct Unix behaviour - for a directory they
+are always true, and for a file if any of the three execute permission bits
+are set then they report that root can execute the file. Perl's builtin
+C<-x> and C<-X> operators have always been correct.
+
+=item *
+
+L<File::Temp> has been upgraded to 0.23
+
+Fixes various bugs involving directory removal. Defers unlinking tempfiles if
+the initial unlink fails, which fixes problems on NFS.
+
+=item *
+
+L<GDBM_File> has been upgraded to 1.15.
+
+The undocumented optional fifth parameter to C<TIEHASH> has been
+removed. This was intended to provide control of the callback used by
+C<gdbm*> functions in case of fatal errors (such as filesystem problems),
+but did not work (and could never have worked). No code on CPAN even
+attempted to use it. The callback is now always the previous default,
+C<croak>. Problems on some platforms with how the C<C> C<croak> function
+is called have also been resolved.
+
+=item *
+
+L<Hash::Util> has been upgraded to 0.15.
+
+C<hash_unlocked> and C<hashref_unlocked> now returns true if the hash is
+unlocked, instead of always returning false [perl #112126].
+
+C<hash_unlocked>, C<hashref_unlocked>, C<lock_hash_recurse> and
+C<unlock_hash_recurse> are now exportable [perl #112126].
+
+Two new functions, C<hash_locked> and C<hashref_locked>, have been added.
+Oddly enough, these two functions were already exported, even though they
+did not exist [perl #112126].
+
+=item *
+
+L<HTTP::Tiny> has been upgraded to 0.025.
+
+Add SSL verification features [github #6], [github #9].
+
+Include the final URL in the response hashref.
+
+Add C<local_address> option.
+
+This improves SSL support.
+
+=item *
+
+L<IO> has been upgraded to 1.28.
+
+C<sync()> can now be called on read-only file handles [perl #64772].
+
+L<IO::Socket> tries harder to cache or otherwise fetch socket
+information.
+
+=item *
+
+L<IPC::Cmd> has been upgraded to 0.80.
+
+Use C<POSIX::_exit> instead of C<exit> in C<run_forked> [rt.cpan.org #76901].
+
+=item *
+
+L<IPC::Open3> has been upgraded to 1.13.
+
+The C<open3()> function no longer uses C<POSIX::close()> to close file
+descriptors since that breaks the ref-counting of file descriptors done by
+PerlIO in cases where the file descriptors are shared by PerlIO streams,
+leading to attempts to close the file descriptors a second time when
+any such PerlIO streams are closed later on.
+
+=item *
+
+L<Locale::Codes> has been upgraded to 3.25.
+
+It includes some new codes.
+
+=item *
+
+L<Memoize> has been upgraded to 1.03.
+
+Fix the C<MERGE> cache option.
+
+=item *
+
+L<Module::Build> has been upgraded to 0.4003.
+
+Fixed bug where modules without C<$VERSION> might have a version of '0' listed
+in 'provides' metadata, which will be rejected by PAUSE.
+
+Fixed bug in PodParser to allow numerals in module names.
+
+Fixed bug where giving arguments twice led to them becoming arrays, resulting
+in install paths like F<ARRAY(0xdeadbeef)/lib/Foo.pm>.
+
+A minor bug fix allows markup to be used around the leading "Name" in
+a POD "abstract" line, and some documentation improvements have been made.
+
+=item *
+
+L<Module::CoreList> has been upgraded to 2.90
+
+Version information is now stored as a delta, which greatly reduces the
+size of the F<CoreList.pm> file.
+
+This restores compatibility with older versions of perl and cleans up
+the corelist data for various modules.
+
+=item *
+
+L<Module::Load::Conditional> has been upgraded to 0.54.
+
+Fix use of C<requires> on perls installed to a path with spaces.
+
+Various enhancements include the new use of Module::Metadata.
+
+=item *
+
+L<Module::Metadata> has been upgraded to 1.000011.
+
+The creation of a Module::Metadata object for a typical module file has
+been sped up by about 40%, and some spurious warnings about C<$VERSION>s
+have been suppressed.
+
+=item *
+
+L<Module::Pluggable> has been upgraded to 4.7.
+
+Amongst other changes, triggers are now allowed on events, which gives
+a powerful way to modify behaviour.
+
+=item *
+
+L<Net::Ping> has been upgraded to 2.41.
+
+This fixes some test failures on Windows.
+
+=item *
+
+L<Opcode> has been upgraded to 1.25.
+
+Reflect the removal of the boolkeys opcode and the addition of the
+clonecv, introcv and padcv opcodes.
+
+=item *
+
+L<overload> has been upgraded to 1.22.
+
+C<no overload> now warns for invalid arguments, just like C<use overload>.
+
+=item *
+
+L<PerlIO::encoding> has been upgraded to 0.16.
+
+This is the module implementing the ":encoding(...)" I/O layer. It no
+longer corrupts memory or crashes when the encoding back-end reallocates
+the buffer or gives it a typeglob or shared hash key scalar.
+
+=item *
+
+L<PerlIO::scalar> has been upgraded to 0.16.
+
+The buffer scalar supplied may now only contain code pounts 0xFF or
+lower. [perl #109828]
+
+=item *
+
+L<Perl::OSType> has been upgraded to 1.003.
+
+This fixes a bug detecting the VOS operating system.
+
+=item *
+
+L<Pod::Html> has been upgraded to 1.18.
+
+The option C<--libpods> has been reinstated. It is deprecated, and its use
+does nothing other than issue a warning that it is no longer supported.
+
+Since the HTML files generated by pod2html claim to have a UTF-8 charset,
+actually write the files out using UTF-8 [perl #111446].
+
+=item *
+
+L<Pod::Simple> has been upgraded to 3.28.
+
+Numerous improvements have been made, mostly to Pod::Simple::XHTML,
+which also has a compatibility change: the C<codes_in_verbatim> option
+is now disabled by default. See F<cpan/Pod-Simple/ChangeLog> for the
+full details.
+
+=item *
+
+L<re> has been upgraded to 0.23
+
+Single character [class]es like C</[s]/> or C</[s]/i> are now optimized
+as if they did not have the brackets, i.e. C</s/> or C</s/i>.
+
+See note about C<op_comp> in the L</Internal Changes> section below.
+
+=item *
+
+L<Safe> has been upgraded to 2.35.
+
+Fix interactions with C<Devel::Cover>.
+
+Don't eval code under C<no strict>.
+
+=item *
+
+L<Scalar::Util> has been upgraded to version 1.27.
+
+Fix an overloading issue with C<sum>.
+
+C<first> and C<reduce> now check the callback first (so C<&first(1)> is
+disallowed).
+
+Fix C<tainted> on magical values [rt.cpan.org #55763].
+
+Fix C<sum> on previously magical values [rt.cpan.org #61118].
+
+Fix reading past the end of a fixed buffer [rt.cpan.org #72700].
+
+=item *
+
+L<Search::Dict> has been upgraded to 1.07.
+
+No longer require C<stat> on filehandles.
+
+Use C<fc> for casefolding.
+
+=item *
+
+L<Socket> has been upgraded to 2.009.
+
+Constants and functions required for IP multicast source group membership
+have been added.
+
+C<unpack_sockaddr_in()> and C<unpack_sockaddr_in6()> now return just the IP
+address in scalar context, and C<inet_ntop()> now guards against incorrect
+length scalars being passed in.
+
+This fixes an uninitialized memory read.
+
+=item *
+
+L<Storable> has been upgraded to 2.41.
+
+Modifying C<$_[0]> within C<STORABLE_freeze> no longer results in crashes
+[perl #112358].
+
+An object whose class implements C<STORABLE_attach> is now thawed only once
+when there are multiple references to it in the structure being thawed
+[perl #111918].
+
+Restricted hashes were not always thawed correctly [perl #73972].
+
+Storable would croak when freezing a blessed REF object with a
+C<STORABLE_freeze()> method [perl #113880].
+
+It can now freeze and thaw vstrings correctly. This causes a slight
+incompatible change in the storage format, so the format version has
+increased to 2.9.
+
+This contains various bugfixes, including compatibility fixes for older
+versions of Perl and vstring handling.
+
+=item *
+
+L<Sys::Syslog> has been upgraded to 0.32.
+
+This contains several bug fixes relating to C<getservbyname()>,
+C<setlogsock()>and log levels in C<syslog()>, together with fixes for
+Windows, Haiku-OS and GNU/kFreeBSD. See F<cpan/Sys-Syslog/Changes>
+for the full details.
+
+=item *
+
+L<Term::ANSIColor> has been upgraded to 4.02.
+
+Add support for italics.
+
+Improve error handling.
+
+=item *
+
+L<Term::ReadLine> has been upgraded to 1.10. This fixes the
+use of the B<cpan> and B<cpanp> shells on Windows in the event that the current
+drive happens to contain a F<\dev\tty> file.
+
+=item *
+
+L<Test::Harness> has been upgraded to 3.26.
+
+Fix glob semantics on Win32 [rt.cpan.org #49732].
+
+Don't use C<Win32::GetShortPathName> when calling perl [rt.cpan.org #47890].
+
+Ignore -T when reading shebang [rt.cpan.org #64404].
+
+Handle the case where we don't know the wait status of the test more
+gracefully.
+
+Make the test summary 'ok' line overridable so that it can be changed to a
+plugin to make the output of prove idempotent.
+
+Don't run world-writable files.
+
+=item *
+
+L<Text::Tabs> and L<Text::Wrap> have been upgraded to
+2012.0818. Support for Unicode combining characters has been added to them
+both.
+
+=item *
+
+L<threads::shared> has been upgraded to 1.31.
+
+This adds the option to warn about or ignore attempts to clone structures
+that can't be cloned, as opposed to just unconditionally dying in
+that case.
+
+This adds support for dual-valued values as created by
+L<Scalar::Util::dualvar|Scalar::Util/"dualvar NUM, STRING">.
+
+=item *
+
+L<Tie::StdHandle> has been upgraded to 4.3.
+
+C<READ> now respects the offset argument to C<read> [perl #112826].
+
+=item *
+
+L<Time::Local> has been upgraded to 1.2300.
+
+Seconds values greater than 59 but less than 60 no longer cause
+C<timegm()> and C<timelocal()> to croak.
+
+=item *
+
+L<Unicode::UCD> has been upgraded to 0.53.
+
+This adds a function L<all_casefolds()|Unicode::UCD/all_casefolds()>
+that returns all the casefolds.
+
+=item *
+
+L<Win32> has been upgraded to 0.47.
+
+New APIs have been added for getting and setting the current code page.
+
+=back
+
+
=head2 Removed Modules and Pragmata
-=over
+=over
=item *
=item *
-Strings with code points over 0xFF may not be mapped into in-memory file
-handles
+L<'Strings with code points over 0xFF may not be mapped into in-memory file handles'|perldiag/"Strings with code points over 0xFF may not be mapped into in-memory file handles">
=item *
SvUPGRADE(sv);
-or to to avoid compiler warnings with older perls, possibly
+or to avoid compiler warnings with older perls, possibly
(void)SvUPGRADE(sv);
=item *
-Accessing C<$&> after a pattern match now works if it had not been seen
-before the match. I.e., this applies to C<${'&'}> (under C<no strict>) and
-C<eval '$&'>. The same applies to C<$'> and C<$`> [perl #4289].
-
-=item *
-
Several bugs involving C<local *ISA> and C<local *Foo::> causing stale
MRO caches have been fixed.
=item *
-Reset the UTF-8 position cache when accessing magical variables to avoid the
-string buffer and the UTF-8 position cache getting out of sync
+The UTF-8 position cache is now reset when accessing magical variables, to
+avoid the string buffer and the UTF-8 position cache getting out of sync
[perl #114410].
=item *
=item *
-A bug in the compilation of a C</(?{})/> expression which affected the TryCatch
-test suite has been fixed [perl #114242].
-
-=item *
-
Pod can now be nested in code inside a quoted construct outside of a string
eval. This used to work only within string evals [perl #114040].
=item *
The array iterator used for the C<each @array> construct is now correctly
-reset when C<@array> is cleared (RT #75596). This happens for example when the
-array is globally assigned to, as in C<@array = (...)>, but not when its
+reset when C<@array> is cleared [perl #75596]. This happens, for example, when
+the array is globally assigned to, as in C<@array = (...)>, but not when its
B<values> are assigned to. In terms of the XS API, it means that C<av_clear()>
will now reset the iterator.
=back
+=head1 Obituary
+
+Hojung Yoon (AMORETTE), 24, of Seoul, South Korea, went to his long rest
+on May 8, 2013 with llama figurine and autographed TIMTOADY card. He
+was a brilliant young Perl 5 & 6 hacker and a devoted member of
+Seoul.pm. He programmed Perl, talked Perl, ate Perl, and loved Perl. We
+believe that he is still programming in Perl with his broken IBM laptop
+somewhere. He will be missed.
+
=head1 Acknowledgements
Perl v5.18.0 represents approximately 12 months of development since
https://perl5.git.perl.org / perl5.git / blobdiff