X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=pod%2Fperl593delta.pod;h=f5c43da203cde41dd39ff6e1fe976e9087a34ce8;hb=2d997502fd695609fa2064523de2ba2d8d094b6c;hp=2af1af630544ef34ec7d0ff934e635a50def07a3;hpb=35cdf2f9effb7b7d5ac9c4a22f487d86f223a45e;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/pod/perl593delta.pod b/pod/perl593delta.pod
index 2af1af6..f5c43da 100644
--- a/pod/perl593delta.pod
+++ b/pod/perl593delta.pod
@@ -64,7 +64,7 @@ Robin Houston.
 
 Perl 5 now has a switch statement. It's available when C<use feature
 'switch'> is in effect. This feature introduces three new keywords,
-C<given>, C<when>, and C<default> :
+C<given>, C<when>, and C<default>:
 
     given ($foo) {
 	when (/^abc/) { $abc = 1; }
@@ -83,7 +83,7 @@ detail">.
 
 =head2 C<say()>
 
-say() is a new built-in, only avaiable when C<use feature 'say'> is in
+say() is a new built-in, only available when C<use feature 'say'> is in
 effect, that is similar to print(), but that implicitly appends a newline
 to the printed string. See L<perlfunc/say>.
 
@@ -161,7 +161,7 @@ Enhancements">.
 
 =item *
 
-C<assertions::compat>, also available on CPAN, allows to use assertions on
+C<assertions::compat>, also available on CPAN, allows the use of assertions on
 perl versions prior to 5.9.0 (that is the first one to natively support
 them).
 
@@ -198,6 +198,12 @@ has been included for SHA support in the CPAN module.
 C<ptar> is a pure perl implementation of C<tar>, that comes with
 C<Archive::Tar>.
 
+=head2 C<ptardiff>
+
+C<ptardiff> is a small script used to generate a diff between the contents
+of a tar archive and a directory tree. Like C<ptar>, it comes with
+C<Archive::Tar>.
+
 =head2 C<shasum>
 
 This command-line utility, used to print or to check SHA digests, comes
@@ -205,7 +211,7 @@ with the new C<Digest::SHA> module.
 
 =head2 C<h2xs> enhancements
 
-C<h2xs> implements new option C<--use-xsloader> to force use of
+C<h2xs> implements a new option C<--use-xsloader> to force use of
 C<XSLoader> even in backwards compatible modules.
 
 The handling of authors' names that had apostrophes has been fixed.
@@ -214,8 +220,8 @@ Any enums with negative values are now skipped.
 
 =head2 C<perlivp> enhancements
 
-C<perlivp> implements new option C<-a> and will not check for F<*.ph>
-files by default any more.  Use the C<-a> option to run I<all> tests.
+C<perlivp> no longer checks for F<*.ph> files by default.  Use the new C<-a>
+option to run I<all> tests.
 
 =head1 Documentation
 
@@ -223,7 +229,9 @@ files by default any more.  Use the C<-a> option to run I<all> tests.
 
 The L<perlglossary> manpage is a glossary of terms used in the Perl
 documentation, technical and otherwise, kindly provided by O'Reilly Media,
-inc.
+Inc.
+
+L<perltodo> now lists a rough roadmap to Perl 5.10.
 
 =head1 Performance Enhancements
 
@@ -234,7 +242,18 @@ transliteration mappings has been reimplemented in XS.
 
 =head2 Constant subroutines
 
-XXX
+The interpreter internals now support a far more memory efficient form of
+inlineable constants. Storing a reference to a constant value in a symbol
+table is equivalent to a full typeglob referencing a constant subroutine,
+but using about 400 bytes less memory. This proxy constant subroutine is
+automatically upgraded to a real typeglob with subroutine if necessary.
+The approach taken is analogous to the existing space optimisation for
+subroutine stub declarations, which are stored as plain scalars in place
+of the full typeglob.
+
+Several of the core modules have been converted to use this feature for
+their system dependent constants - as a result C<use POSIX;> now takes about
+200K less memory.
 
 =head2 C<PERL_DONT_CREATE_GVSV>
 
@@ -311,7 +330,7 @@ anyway.)
 =head2 Calling CORE::require()
 
 CORE::require() and CORE::do() were always parsed as require() and do()
-when they were overriden. This is now fixed.
+when they were overridden. This is now fixed.
 
 =head2 Subscripts of slices
 
@@ -333,7 +352,7 @@ was backed out.
 
 Using the sprintf() function with some formats could lead to a buffer
 overflow in some specific cases. This has been fixed, along with several
-other bugs, notably in bound checking.
+other bugs, notably in bounds checking.
 
 In related fixes, it was possible for badly written code that did not follow
 the documentation of C<Sys::Syslog> to have formatting vulnerabilities.
@@ -378,8 +397,8 @@ C<PerlIO::scalar> now works better with non-default C<$/> settings.
 
 =item *
 
-You can now use the C<x> operator to repeat a C<qw//> list. This used
-to raise a syntax error. For example: C<qw(foo bar) x 3>.
+The C<x> repetition operator is now able to operate on C<qw//> lists. This
+used to raise a syntax error.
 
 =item *
 
@@ -461,7 +480,7 @@ of the declarations involved is a C<my> variable:
     my $x;  our $x;	# warns
     our $x;  my $x;	# warns
 
-On the other hand, the following :
+On the other hand, the following:
 
     our $x; our $x;
 
@@ -500,10 +519,6 @@ C<AV*> parameters.
 The inheritance hierarchy of C<B::> modules has changed; C<B::NV> now
 inherits from C<B::SV> (it used to inherit from C<B::IV>).
 
-=head1 Known Problems
-
-=head2 Platform Specific Problems
-
 =head1 Reporting Bugs
 
 If you find what you think is a bug, you might check the articles