3 perldelta - what is new for perl v5.9.3
7 This document describes differences between the 5.9.2 and the 5.9.3
8 development releases. See L<perl590delta>, L<perl591delta> and
9 L<perl592delta> for the differences between 5.8.0 and 5.9.2.
11 =head1 Incompatible Changes
13 =head2 Parsing of C<-f _>
15 C<_> is now forced to be a bareword after a filetest operator. This solves
16 a number of misparsing issues when a global C<_> subroutine is defined.
18 =head2 C<defined %foo::bar::>
20 This used to report whether the C<foo::bar> package was created. Now it's
21 always true, as a side-effect of a change to shrink the internal size of
22 hash structures. Note that using C<defined> on hashes was deprecated
23 anyway. To achieve the same result, you can use the following
24 backwards-compatible idiom:
26 defined *foo::{HASH}->{'bar::'}
28 =head1 Core Enhancements
30 =head1 Modules and Pragmata
32 =head1 Utility Changes
36 =head1 Performance Enhancements
38 =head1 Installation and Configuration Improvements
40 =head1 Selected Bug Fixes
42 =head1 New or Changed Diagnostics
44 =head1 Changed Internals
48 =head2 Platform Specific Problems
52 If you find what you think is a bug, you might check the articles
53 recently posted to the comp.lang.perl.misc newsgroup and the perl
54 bug database at http://bugs.perl.org/ . There may also be
55 information at http://www.perl.org/ , the Perl Home Page.
57 If you believe you have an unreported bug, please run the B<perlbug>
58 program included with your release. Be sure to trim your bug down
59 to a tiny but sufficient test case. Your bug report, along with the
60 output of C<perl -V>, will be sent off to perlbug@perl.org to be
61 analysed by the Perl porting team.
65 The F<Changes> file for exhaustive details on what changed.
67 The F<INSTALL> file for how to build Perl.
69 The F<README> file for general stuff.
71 The F<Artistic> and F<Copying> files for copyright information.