[ 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 v5.15.1
+perldelta - what is new for perl v5.15.2
=head1 DESCRIPTION
This document describes differences between the 5.15.1 release and
-the 5.15.0 release.
+the 5.15.2 release.
-If you are upgrading from an earlier release such as 5.14.0, first read
-L<perl5150delta>, which describes differences between 5.14.0 and
-5.15.0.
+If you are upgrading from an earlier release such as 5.15.0, first read
+L<perl5151delta>, which describes differences between 5.15.0 and
+5.15.1.
=head1 Notice
[ List each enhancement as a =head2 entry ]
-=head2 C<splice()> doesn't warn when truncating
-
-You can now limit the size of an array using C<splice(@a,MAX_LEN)> without
-worrying about warnings.
-
-=head2 The C<\$> prototype accepts any scalar lvalue
-
-The C<\$> and C<\[$]> subroutine prototypes now accept any scalar lvalue
-argument. Previously they only accepted scalars beginning with C<$> and
-hash and array elements. This change makes them consistent with the way
-the built-in C<read> and C<recv> functions (among others) parse their
-arguments. This means that one can override the built-in functions with
-custom subroutines that parse their arguments the same way.
-
-=head2 You can now C<study> more than one string
-
-The restriction that you can only have one C<study> active at a time has been
-removed. You can now usefully C<study> as many strings as you want (until you
-exhaust memory).
-
-=head2 The Unicode C<Script_Extensions> property is now supported.
-
-New in Unicode 6.0, this is an improved C<Script> property. Details
-are in L<perlunicode/Scripts>.
-
=head1 Security
XXX Any security-related notices go here. In particular, any security
=item *
-The implementation of C<s///r> makes one less copy of the scalar's value.
-
-=item *
-
-If a studied scalar is C<split> with a regex, the engine will now take
-advantage of the C<study> data.
-
-=item *
-
-C<study> now uses considerably less memory for shorter strings. Strings shorter
-than 65535 characters use roughly half the memory than previously, strings
-shorter than 255 characters use roughly one quarter of the memory.
-
-=item *
-
-Recursive calls to lvalue subroutines in lvalue scalar context use less
-memory.
+XXX
=back
=item *
-L<CGI> has been upgraded from version 3.54 to version 3.55
-
-[THINGS THAT MAY BREAK YOUR CODE]
-
-C<url()> was fixed to return C<PATH_INFO> when it is explicitly requested
-with either the path=>1 or path_info=>1 flag.
-
-If your code is running under mod_rewrite (or compatible) and you are calling C<self_url()> or
-you are calling C<url()> and passing path_info=>1, These methods will actually be
-returning C<PATH_INFO> now, as you have explicitly requested, or has C<self_url()>
-has requested on your behalf.
-
-The C<PATH_INFO> has been omitted in such URLs since the issue was introduced
-in the 3.12 release in December, 2005.
-
-This bug is so old your application may have come to depend on it or
-workaround it. Check for application before upgrading to this release.
-
-Examples of affected method calls:
-
- $q->url(-absolute => 1, -query => 1, -path_info => 1 )
- $q->url(-path=>1)
- $q->url(-full=>1,-path=>1)
- $q->url(-rewrite=>1,-path=>1)
- $q->self_url();
-
-=item *
-
-L<Compress::Raw::Bzip2> has been upgraded from version 2.035 to version 2.037
-
-=item *
-
-L<Compress::Raw::Zlib> has been upgraded from version 2.035 to version 2.037
-
-Added offset parameter to CRC32
-
-=item *
-
-L<Compress::Zlib> has been upgraded from version 2.035 to version 2.037
-
-IO::Compress::Zip and IO::Uncompress::Unzip now have support for LZMA (method 14).
-There is a fix for a CRC issue in IO::Compress::Unzip and it supports Streamed
-Stored context now. And fixed a Zip64 issue in
-IO::Compress::Zip when the content size was exactly 0xFFFFFFFF.
-
-=item *
-
-L<CPANPLUS> has been upgraded from version 0.9105 to version 0.9106
-
-=item *
-
-L<ExtUtils::MakeMaker> has been upgraded from version 6.57_05 to version 6.58
-
-=item *
-
-L<IPC::Cmd> has been upgraded from version 0.70 to version 0.72
-
-Capturing of command output (both C<STDOUT> and C<STDERR>) is now supported
-using L<IPC::Open3> on MSWin32 without requiring L<IPC::Run>.
-
-=item *
-
-L<Locale::Codes> has been upgraded from version 3.16 to version 3.17
-
-Added Language Extension codes (langext) and Language Variation codes
-(langvar) as defined in the IANA language registry.
-
-Added language codes from ISO 639-5
+L<ExtUtils::Install> has been upgraded from version 1.56 to version 1.57.
-Added language/script codes from the IANA language subtag
-registry
-
-Fixed an uninitialized value warning. RT 67438
-
-Fixed the return value for the all_XXX_codes and all_XXX_names functions. RT 69100
-
-Reorganized modules to move Locale::MODULE to Locale::Codes::MODULE to
-allow for cleaner future additions. The original four modules (Locale::Language,
-Locale::Currency, Locale::Country, Locale::Script) will continue to work, but
-all new sets of codes will be added in the Locale::Codes namespace.
-
-=item *
-
-L<attributes> has been upgraded from version 0.14 to 0.15, as part of the
-lvalue attribute warnings fix. See L</Selected Bug Fixes>, below.
-
-=item *
-
-L<Math::BigInt::FastCalc> has been upgraded from version 0.28 to version 0.29.
-
-The XS code is now compiled with C<PERL_NO_GET_CONTEXT>, which will aid
-performance under ithreads.
-
-=item *
-
-L<Pod::Simple> has been upgraded from version 3.16 to version 3.17
-
-=item *
-
-L<Unicode::Collate> has been upgraded from version 0.76 to version 0.77
-
-Applied [perl #93470] silencing compiler warnings with -Wwrite-strings
-
-=item *
-
-L<Win32API::File> has been upgraded from version 0.1101 to version 0.1200
-
-Added SetStdHandle and GetStdHandle functions
-
-=item *
-
-L<threads> has been upgraded from version 1.83 to 1.84
-
-An unused variable was removed from the XS code.
+There is no change to ExtUtils::Install other than the version number
+increase, but L<ExtUtils::Installed> has been upgraded from version 1.999_001
+to vesion 1.999002 and a new C<skip_cwd> attribute has been added.
=back
=item *
-Perl 4-era .pl libraries
-
-Perl used to bundle a handful of library files that predate Perl 5. Most of
-these files, which have been deprecated since version 5.14.0, have now been
-removed. If your code still relies on these libraries, you can install them
-again from C<Perl4::CoreLibs> on CPAN.
+XXX
=back
entries for each change
Use L<XXX> with program names to get proper documentation linking. ]
-=head3 L<XXX>
+=head3 L<perlivp>
=over 4
=item *
-XXX
+Fixed a bug whereby other perls under the current directory could cause
+false positive failures.
+
+=item *
+
+Tests for .ph files have been removed, as these test have been optional since
+2005 and .ph files are no longer generated during installation.
=back
=item *
-Applying the :lvalue attribute to subroutine that is already defined does
-not work properly, as the attribute changes the way the sub is compiled.
-Hence, Perl 5.12 began warning when an attempt is made to apply the
-attribute to an already defined sub. In such cases, the attribute is
-discarded.
-
-But the change in 5.12 missed the case where custom attributes are also
-present: that case still silently and ineffectively applied the attribute.
-That omission has now been corrected. C<sub foo :lvalue :Whatever> (when
-C<foo> is already defined) now warns about the :lvalue attribute, and does
-not apply it.
-
-L<attributes.pm|attributes> has likewise been updated to warn and not apply
-the attribute.
-
-=item *
-
-=for comment
-Not necessary for perl5160delta
-
-The remaining discrepancies between explicit and implicit return from
-lvalue subroutines have been resolved. They mainly involved which error
-message to display when a read-only value is returned in lvalue context.
-Also, returning a PADTMP (the result of most built-ins, like C<index>) in
-lvalue context is now forbidden for explicit return, as it always has been
-for implicit return. This is not a regression from 5.14, as all the cases
-in which it could happen where previously syntax errors.
+Locking an lvalue subroutine (via C<lock &lvsub>) now locks the return
+value, instead of trying to lock the sub (which has no effect). It also no
+longer tries to return the sub as a scalar, resulting in strange side
+effects like C<ref \$_> returning "CODE" in some instances.
=item *
-=for comment
-Not necessary for perl5160delta
-
-Explicitly returning a tied C<my> variable from an lvalue subroutine in
-list lvalue context used to clear the variable before the assignment could
-happen. This is something that was missed when explicit return was made to
-work in 5.15.0.
-
-=item *
-
-=for comment
-Not necessary for perl5160delta
-
-A minor memory leak, introduced in 5.15.0, has been fixed. It would occur
-when a hash is freed that has had its current iterator deleted
-[perl #93454].
-
-=item *
-
-The C<prototype> function now returns a prototype (the empty string) for
-the C<__FILE__>, C<__LINE__> and C<__PACKAGE__> directives, instead of
-dying, as they are indistinguishable syntactically from nullary functions
-like C<time>.
-
-=item *
-
-A bug affecting lvalue context propagation through nested lvalue subroutine
-calls has been fixed. Previously, returning a value in nested rvalue
-context would be treated as lvalue context by the inner subroutine call,
-resulting in some values (such as read-only values) being rejected.
+C<lock>'s prototype has been corrected to C<(\[$@%*])> from C<(\$)>, which
+was just wrong.
=back
=head1 Acknowledgements
-XXX The list of people to thank goes here.
+XXX Generate this with:
+
+ perl Porting/acknowledgements.pl v5.15.1..HEAD
=head1 Reporting Bugs
https://perl5.git.perl.org / perl5.git / blobdiff