5 [ this is a template for a new perldelta file. Any text flagged as
6 XXX needs to be processed before release. ]
8 perldelta - what is new for perl v5.XXX.XXX
12 This document describes differences between the 5.XXX.XXX release and
13 the 5.XXX.XXX release.
15 If you are upgrading from an earlier release such as 5.YYY.YYY, first read
16 L<perl5YYYdelta>, which describes differences between 5.ZZZ.ZZZ and
21 XXX Any important notices here
23 =head1 Core Enhancements
25 XXX New core language features go here. Summarise user-visible core language
26 enhancements. Particularly prominent performance optimisations could go
27 here, but most should go in the L</Performance Enhancements> section.
29 [ List each enhancement as a =head2 entry ]
33 XXX Any security-related notices go here. In particular, any security
34 vulnerabilities closed should be noted here rather than in the
35 L</Selected Bug Fixes> section.
37 [ List each security issue as a =head2 entry ]
39 =head1 Incompatible Changes
41 XXX For a release on a stable branch, this section aspires to be:
43 There are no changes intentionally incompatible with 5.XXX.XXX
44 If any exist, they are bugs and reports are welcome.
46 [ List each incompatible change as a =head2 entry ]
50 XXX Any deprecated features, syntax, modules etc. should be listed here.
51 In particular, deprecated modules should be listed here even if they are
52 listed as an updated module in the L</Modules and Pragmata> section.
54 [ List each deprecation as a =head2 entry ]
56 =head1 Performance Enhancements
58 XXX Changes which enhance performance without changing behaviour go here. There
59 may well be none in a stable release.
61 [ List each enhancement as a =item entry ]
71 =head1 Modules and Pragmata
73 XXX All changes to installed files in F<cpan/>, F<dist/>, F<ext/> and F<lib/>
74 go here. If Module::CoreList is updated, generate an initial draft of the
75 following sections using F<Porting/corelist-perldelta.pl>, which prints stub
76 entries to STDOUT. Results can be pasted in place of the '=head2' entries
77 below. A paragraph summary for important changes should then be added by hand.
78 In an ideal world, dual-life modules would have a F<Changes> file that could be
81 [ Within each section, list entries as a =item entry ]
83 =head2 New Modules and Pragmata
93 =head2 Updated Modules and Pragmata
99 L<XXX> has been upgraded from version 0.69 to version 0.70.
103 =head2 Removed Modules and Pragmata
115 XXX Changes to files in F<pod/> go here. Consider grouping entries by
116 file and be sure to link to the appropriate page, e.g. L<perlfunc>.
118 =head2 New Documentation
120 XXX Changes which create B<new> files in F<pod/> go here.
124 XXX Description of the purpose of the new file here
126 =head2 Changes to Existing Documentation
128 XXX Changes which significantly change existing files in F<pod/> go here.
129 However, any changes to F<pod/perldiag.pod> should go in the L</Diagnostics>
138 XXX Description of the change here
144 The following additions or changes have been made to diagnostic output,
145 including warnings and fatal error messages. For the complete list of
146 diagnostic messages, see L<perldiag>.
148 XXX New or changed warnings emitted by the core's C<C> code go here. Also
149 include any changes in L<perldiag> that reconcile it to the C<C> code.
151 [ Within each section, list entries as a =item entry that links to perldiag,
156 L<Invalid version object|perldiag/"Invalid version object">
159 =head2 New Diagnostics
161 XXX Newly added diagnostic messages go here
169 XXX L<message|perldiag/"message">
179 XXX L<message|perldiag/"message">
183 =head2 Changes to Existing Diagnostics
185 XXX Changes (i.e. rewording) of diagnostic messages go here
191 XXX Describe change here
195 =head1 Utility Changes
197 XXX Changes to installed programs such as F<perlbug> and F<xsubpp> go
198 here. Most of these are built within the directories F<utils> and F<x2p>.
200 [ List utility changes as a =head3 entry for each utility and =item
201 entries for each change
202 Use L<XXX> with program names to get proper documentation linking. ]
214 =head1 Configuration and Compilation
216 XXX Changes to F<Configure>, F<installperl>, F<installman>, and analogous tools
217 go here. Any other changes to the Perl build process should be listed here.
218 However, any platform-specific changes should be listed in the
219 L</Platform Support> section, instead.
221 [ List changes as a =item entry ].
233 XXX Any significant changes to the testing of a freshly built perl should be
234 listed here. Changes which create B<new> files in F<t/> go here as do any
235 large changes to the testing harness (e.g. when parallel testing was added).
236 Changes to existing files in F<t/> aren't worth summarising, although the bugs
237 that they represent may be covered elsewhere.
239 [ List each test improvement as a =item entry ]
249 =head1 Platform Support
251 XXX Any changes to platform support should be listed in the sections below.
253 [ Within the sections, list each platform as a =item entry with specific
254 changes as paragraphs below it. ]
258 XXX List any platforms that this version of perl compiles on, that previous
259 versions did not. These will either be enabled by new files in the F<hints/>
260 directories, or new subdirectories and F<README> files at the top level of the
265 =item XXX-some-platform
271 =head2 Discontinued Platforms
273 XXX List any platforms that this version of perl no longer compiles on.
277 =item XXX-some-platform
283 =head2 Platform-Specific Notes
285 XXX List any changes for specific platforms. This could include configuration
286 and compilation changes or changes in portability/compatibility. However,
287 changes within modules for platforms should generally be listed in the
288 L</Modules and Pragmata> section.
292 =item XXX-some-platform
298 =head1 Internal Changes
300 XXX Changes which affect the interface available to C<XS> code go here.
301 Other significant internal changes for future core maintainers should
304 [ List each change as a =item entry ]
314 =head1 Selected Bug Fixes
316 XXX Important bug fixes in the core language are summarised here.
317 Bug fixes in files in F<ext/> and F<lib/> are best summarised in
318 L</Modules and Pragmata>.
320 [ List each fix as a =item entry ]
330 =head1 Known Problems
332 XXX Descriptions of platform agnostic bugs we know we can't fix go here. Any
333 tests that had to be C<TODO>ed for the release would be noted here, unless
334 they were specific to a particular platform (see below).
336 This is a list of some significant unfixed bugs, which are regressions
337 from either 5.XXX.XXX or 5.XXX.XXX.
339 [ List each fix as a =item entry ]
351 XXX If any significant core contributor has died, we've added a short obituary
354 =head1 Acknowledgements
356 XXX The list of people to thank goes here.
358 =head1 Reporting Bugs
360 If you find what you think is a bug, you might check the articles
361 recently posted to the comp.lang.perl.misc newsgroup and the perl
362 bug database at http://rt.perl.org/perlbug/ . There may also be
363 information at http://www.perl.org/ , the Perl Home Page.
365 If you believe you have an unreported bug, please run the L<perlbug>
366 program included with your release. Be sure to trim your bug down
367 to a tiny but sufficient test case. Your bug report, along with the
368 output of C<perl -V>, will be sent off to perlbug@perl.org to be
369 analysed by the Perl porting team.
371 If the bug you are reporting has security implications, which make it
372 inappropriate to send to a publicly archived mailing list, then please send
373 it to perl5-security-report@perl.org. This points to a closed subscription
374 unarchived mailing list, which includes
375 all the core committers, who will be able
376 to help assess the impact of issues, figure out a resolution, and help
377 co-ordinate the release of patches to mitigate or fix the problem across all
378 platforms on which Perl is supported. Please only use this address for
379 security issues in the Perl core, not for modules independently
384 The F<Changes> file for an explanation of how to view exhaustive details
387 The F<INSTALL> file for how to build Perl.
389 The F<README> file for general stuff.
391 The F<Artistic> and F<Copying> files for copyright information.