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3a5c9134 CBW |
1 | =encoding utf8 |
2 | ||
3 | =head1 NAME | |
4 | ||
d17f3dbc JV |
5 | [ this is a template for a new perldelta file. Any text flagged as |
6 | XXX needs to be processed before release. ] | |
15e6cdd9 | 7 | |
d17f3dbc | 8 | perldelta - what is new for perl v5.13.10 |
0d157ee2 | 9 | |
d17f3dbc | 10 | =head1 DESCRIPTION |
b16cfc56 | 11 | |
d17f3dbc JV |
12 | This document describes differences between the 5.XXX.XXX release and |
13 | the 5.XXX.XXX release. | |
3a5c9134 | 14 | |
d17f3dbc JV |
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 | |
17 | 5.YYY.YYY. | |
d4560299 | 18 | |
d17f3dbc | 19 | =head1 Notice |
d4560299 | 20 | |
d17f3dbc | 21 | XXX Any important notices here |
d4560299 | 22 | |
d17f3dbc | 23 | =head1 Core Enhancements |
d4560299 | 24 | |
d17f3dbc JV |
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. | |
2638c0ff | 28 | |
d17f3dbc | 29 | [ List each enhancement as a =head2 entry ] |
2638c0ff | 30 | |
9e9ca9d7 KW |
31 | =head2 Add C<\p{Titlecase}> as a synonym for C<\p{Title}> |
32 | ||
33 | This synyom is added for symmetry with the Unicode property names | |
34 | C<\p{Uppercase}> and C<\p{Lowercase}>. | |
35 | ||
2f7f8cb1 KW |
36 | =head2 New regular expression modifier option C</aa> |
37 | ||
38 | Doubling the C</a> regular expression modifier increases its effect, | |
39 | so that in case-insensitive matching, no ASCII character will match a | |
40 | non-ASCII character. For example, normally, | |
41 | ||
42 | 'k' =~ /\N{KELVIN SIGN}/ | |
43 | ||
44 | will match; it won't under C</aa>. Note that like C</a>, C</aa> | |
45 | in 5.14 will not actually be able to be used as a suffix at the end of a | |
46 | regular expression. | |
9e9ca9d7 | 47 | |
d17f3dbc | 48 | =head1 Security |
17096837 | 49 | |
d17f3dbc JV |
50 | XXX Any security-related notices go here. In particular, any security |
51 | vulnerabilities closed should be noted here rather than in the | |
52 | L</Selected Bug Fixes> section. | |
e1165778 | 53 | |
d17f3dbc | 54 | [ List each security issue as a =head2 entry ] |
17096837 | 55 | |
d17f3dbc | 56 | =head1 Incompatible Changes |
935c8d19 | 57 | |
d17f3dbc | 58 | XXX For a release on a stable branch, this section aspires to be: |
a3ab329f | 59 | |
d17f3dbc JV |
60 | There are no changes intentionally incompatible with 5.XXX.XXX. If any |
61 | exist, they are bugs and reports are welcome. | |
a3ab329f | 62 | |
d17f3dbc | 63 | [ List each incompatible change as a =head2 entry ] |
6def3600 | 64 | |
56ca34ca KW |
65 | =head2 Most C<\p{}> properties are now immune from case-insensitive matching |
66 | ||
67 | For most Unicode properties, it doesn't make sense to have them match | |
68 | differently under C</i> case-insensitive matching than not. And doing | |
69 | so leads to unexpected results and potential security holes. For | |
70 | example | |
71 | ||
72 | m/\p{ASCII_Hex_Digit}+/i | |
73 | ||
74 | could previously match non-ASCII characters because of the Unicode | |
75 | matching rules. There were a number of bugs in this feature until an | |
76 | earlier release in the 5.13 series. Now this release reverts, and | |
77 | removes the feature completely except for the few properties where | |
78 | people have come to expect it, namely the ones where casing is an | |
79 | integral part of their functionality, such as C<m/\p{Uppercase}/i> and | |
80 | C<m/\p{Lowercase}/i>, both of which match the exact same code points, | |
81 | namely those matched by C<m/\p{Cased}/i>. Details are in | |
82 | L<perlrecharclass/Unicode Properties>. | |
83 | ||
84 | User-defined property handlers that need to match differently under | |
85 | C</i> must change to read the new boolean parameter passed it which is | |
86 | non-zero if case-insensitive matching is in effect; 0 if not. See | |
87 | L<perluniprops/User-Defined Character Properties>. | |
88 | ||
d17f3dbc | 89 | =head1 Deprecations |
6def3600 | 90 | |
d17f3dbc JV |
91 | XXX Any deprecated features, syntax, modules etc. should be listed here. |
92 | In particular, deprecated modules should be listed here even if they are | |
93 | listed as an updated module in the L</Modules and Pragmata> section. | |
e8b333e6 | 94 | |
d17f3dbc | 95 | [ List each deprecation as a =head2 entry ] |
e8b333e6 | 96 | |
d17f3dbc | 97 | =head1 Performance Enhancements |
935c8d19 | 98 | |
d17f3dbc JV |
99 | XXX Changes which enhance performance without changing behaviour go here. There |
100 | may well be none in a stable release. | |
e1165778 | 101 | |
d17f3dbc | 102 | [ List each enhancement as a =item entry ] |
f295f417 | 103 | |
9f7a72d0 | 104 | =over 4 |
17096837 | 105 | |
f295f417 FC |
106 | =item * |
107 | ||
d17f3dbc | 108 | XXX |
9c88a88b | 109 | |
d17f3dbc | 110 | =back |
9c88a88b | 111 | |
d17f3dbc | 112 | =head1 Modules and Pragmata |
b16cfc56 | 113 | |
d17f3dbc JV |
114 | XXX All changes to installed files in F<cpan/>, F<dist/>, F<ext/> and F<lib/> |
115 | go here. If Module::CoreList is updated, generate an initial draft of the | |
116 | following sections using F<Porting/corelist-perldelta.pl>, which prints stub | |
117 | entries to STDOUT. Results can be pasted in place of the '=head2' entries | |
118 | below. A paragraph summary for important changes should then be added by hand. | |
119 | In an ideal world, dual-life modules would have a F<Changes> file that could be | |
120 | cribbed. | |
b16cfc56 | 121 | |
d17f3dbc | 122 | [ Within each section, list entries as a =item entry ] |
8e1e0801 | 123 | |
d17f3dbc | 124 | =head2 New Modules and Pragmata |
8e1e0801 | 125 | |
d17f3dbc | 126 | =over 4 |
4df1dffa FC |
127 | |
128 | =item * | |
129 | ||
39ac3336 DG |
130 | C<Version::Requirements> version 0.101020 has been added as a dual-life |
131 | module. It provides a standard library to model and manipulates module | |
132 | prerequisites and version constraints as defined in the L<CPAN::Meta::Spec>. | |
4df1dffa | 133 | |
d17f3dbc | 134 | =back |
f5d41534 | 135 | |
d17f3dbc | 136 | =head2 Updated Modules and Pragmata |
f5d41534 | 137 | |
d17f3dbc | 138 | =over 4 |
f5d41534 CBW |
139 | |
140 | =item * | |
141 | ||
f4c5852c CBW |
142 | C<CGI> has been upgraded from version 3.51 to 3.52 |
143 | ||
144 | =item * | |
145 | ||
28aafdbe CBW |
146 | C<CPANPLUS> has been upgraded from version 0.9011 to 0.91 |
147 | ||
148 | Includes support for META.json and MYMETA.json and a change to | |
149 | using Digest::SHA for CPAN checksums. | |
150 | ||
151 | =item * | |
152 | ||
f7f926be CBW |
153 | C<IPC::Cmd> has been upgraded from version 0.68 to 0.70 |
154 | ||
155 | =item * | |
156 | ||
44de791a DG |
157 | C<HTTP::Tiny> has been upgraded from version 0.009 to 0.010 |
158 | ||
159 | =item * | |
160 | ||
7cf8bfc0 DG |
161 | C<Module::Build> has been upgraded from version 0.3607 to 0.3622. |
162 | ||
163 | A notable change is the deprecation of several modules. | |
164 | Module::Build::Version has been deprecated and Module::Build now relies | |
165 | directly upon L<version>. Module::Build::ModuleInfo has been deprecated in | |
166 | favor of a standalone copy of it called L<Module::Metadata>. | |
167 | Module::Build::YAML has been deprecated in favor of L<CPAN::Meta::YAML>. | |
168 | ||
169 | =item * | |
170 | ||
f541799a | 171 | C<Module::Load::Conditional> has been upgraded from version 0.40 to 0.44 |
a4031803 CBW |
172 | |
173 | =item * | |
174 | ||
2a856793 DG |
175 | C<Module::Metadata> has been upgraded from version 1.000003 to 1.000004. |
176 | ||
177 | =item * | |
178 | ||
34d5bd5d DG |
179 | C<Parse::CPAN::Meta> has been upgraded from version 1.40 to 1.4401. |
180 | ||
181 | The latest Parse::CPAN::Meta can now read YAML or JSON files using | |
182 | L<CPAN::Meta::YAML> and L<JSON::PP>, which are now part of the Perl core. | |
183 | ||
184 | =item * | |
185 | ||
f31eab29 CBW |
186 | C<Term::UI> has been upgraded from version 0.24 to 0.26 |
187 | ||
188 | =item * | |
189 | ||
f58b9ef1 CBW |
190 | C<Unicode::Collate> has been upgraded from version 0.68 to 0.72 |
191 | ||
192 | This also sees the switch from using the pure-perl version of this | |
193 | module to the XS version.` | |
194 | ||
195 | =item * | |
196 | ||
d17f3dbc | 197 | XXX |
17096837 | 198 | |
d17f3dbc | 199 | =back |
788ba0f4 | 200 | |
d17f3dbc | 201 | =head2 Removed Modules and Pragmata |
98d645a7 | 202 | |
d17f3dbc | 203 | =over 4 |
98d645a7 | 204 | |
7abec982 FC |
205 | =item * |
206 | ||
d17f3dbc | 207 | XXX |
7abec982 | 208 | |
9f7a72d0 | 209 | =back |
e1165778 | 210 | |
9f7a72d0 | 211 | =head1 Documentation |
17096837 | 212 | |
d17f3dbc JV |
213 | XXX Changes to files in F<pod/> go here. Consider grouping entries by |
214 | file and be sure to link to the appropriate page, e.g. L<perlfunc>. | |
b16cfc56 | 215 | |
d17f3dbc | 216 | =head2 New Documentation |
b16cfc56 | 217 | |
d17f3dbc | 218 | XXX Changes which create B<new> files in F<pod/> go here. |
b16cfc56 | 219 | |
d17f3dbc | 220 | =head3 L<XXX> |
b16cfc56 | 221 | |
d17f3dbc | 222 | XXX Description of the purpose of the new file here |
b16cfc56 | 223 | |
d17f3dbc | 224 | =head2 Changes to Existing Documentation |
b16cfc56 | 225 | |
d17f3dbc JV |
226 | XXX Changes which significantly change existing files in F<pod/> go here. |
227 | However, any changes to F<pod/perldiag.pod> should go in the L</Diagnostics> | |
228 | section. | |
b16cfc56 | 229 | |
04c692a8 | 230 | =head3 L<perlhack> and perlrepository |
d4238815 | 231 | |
9f7a72d0 | 232 | =over 4 |
17096837 | 233 | |
d4238815 FC |
234 | =item * |
235 | ||
04c692a8 DR |
236 | The L<perlhack> and perlrepository documents have been heavily edited and |
237 | split up into several new documents. | |
238 | ||
239 | The L<perlhack> document is now much shorter, and focuses on the Perl 5 | |
240 | development process and submitting patches to Perl. The technical content has | |
241 | been moved to several new documents, L<perlsource>, L<perlinterp>, | |
242 | L<perlhacktut>, and L<perlhacktips>. This technical content has only been | |
243 | lightly edited. | |
244 | ||
245 | The perlrepository document has been renamed to L<perlgit>. This new document | |
246 | is just a how-to on using git with the Perl source code. Any other content | |
247 | that used to be in perlrepository has been moved to perlhack. | |
e1165778 | 248 | |
9f7a72d0 | 249 | =back |
17096837 | 250 | |
9f7a72d0 | 251 | =head1 Diagnostics |
17096837 | 252 | |
9f7a72d0 Z |
253 | The following additions or changes have been made to diagnostic output, |
254 | including warnings and fatal error messages. For the complete list of | |
255 | diagnostic messages, see L<perldiag>. | |
e1165778 | 256 | |
d17f3dbc JV |
257 | XXX New or changed warnings emitted by the core's C<C> code go here. Also |
258 | include any changes in L<perldiag> that reconcile it to the C<C> code. | |
259 | ||
260 | [ Within each section, list entries as a =item entry ] | |
261 | ||
9f7a72d0 | 262 | =head2 New Diagnostics |
3a5c9134 | 263 | |
d17f3dbc JV |
264 | XXX Newly added diagnostic messages go here |
265 | ||
9f7a72d0 | 266 | =over 4 |
17096837 | 267 | |
5024bc2d KW |
268 | =item "\b{" is deprecated; use "\b\{" instead |
269 | ||
270 | =item "\B{" is deprecated; use "\B\{" instead | |
271 | ||
272 | Use of an unescaped "{" immediately following a C<\b> or C<\B> is now | |
273 | deprecated so as to reserve its use for Perl itself in a future release. | |
c2e0289e | 274 | |
17096837 | 275 | |
9f7a72d0 | 276 | =back |
e6f1cc4d | 277 | |
9f7a72d0 | 278 | =head2 Changes to Existing Diagnostics |
e1165778 | 279 | |
d17f3dbc JV |
280 | XXX Changes (i.e. rewording) of diagnostic messages go here |
281 | ||
9f7a72d0 | 282 | =over 4 |
17096837 | 283 | |
e1165778 Z |
284 | =item * |
285 | ||
d17f3dbc | 286 | XXX |
17096837 | 287 | |
3a5c9134 CBW |
288 | =back |
289 | ||
9f7a72d0 | 290 | =head1 Utility Changes |
e1165778 | 291 | |
d17f3dbc JV |
292 | XXX Changes to installed programs such as F<perlbug> and F<xsubpp> go |
293 | here. Most of these are built within the directories F<utils> and F<x2p>. | |
e1165778 | 294 | |
d17f3dbc JV |
295 | [ List utility changes as a =head3 entry for each utility and =item |
296 | entries for each change | |
297 | Use L<XXX> with program names to get proper documentation linking. ] | |
e1165778 | 298 | |
d17f3dbc | 299 | =head3 L<XXX> |
b16cfc56 JV |
300 | |
301 | =over 4 | |
302 | ||
303 | =item * | |
304 | ||
d17f3dbc | 305 | XXX |
b16cfc56 JV |
306 | |
307 | =back | |
308 | ||
d17f3dbc | 309 | =head1 Configuration and Compilation |
3a5c9134 | 310 | |
d17f3dbc JV |
311 | XXX Changes to F<Configure>, F<installperl>, F<installman>, and analogous tools |
312 | go here. Any other changes to the Perl build process should be listed here. | |
313 | However, any platform-specific changes should be listed in the | |
314 | L</Platform Support> section, instead. | |
b16cfc56 | 315 | |
d17f3dbc | 316 | [ List changes as a =item entry ]. |
b16cfc56 | 317 | |
d17f3dbc | 318 | =over 4 |
3a5c9134 | 319 | |
b16cfc56 JV |
320 | =item * |
321 | ||
d17f3dbc | 322 | XXX |
b16cfc56 | 323 | |
d17f3dbc | 324 | =back |
b16cfc56 | 325 | |
d17f3dbc | 326 | =head1 Testing |
b16cfc56 | 327 | |
d17f3dbc JV |
328 | XXX Any significant changes to the testing of a freshly built perl should be |
329 | listed here. Changes which create B<new> files in F<t/> go here as do any | |
330 | large changes to the testing harness (e.g. when parallel testing was added). | |
331 | Changes to existing files in F<t/> aren't worth summarising, although the bugs | |
332 | that they represent may be covered elsewhere. | |
b16cfc56 | 333 | |
d17f3dbc | 334 | [ List each test improvement as a =item entry ] |
b16cfc56 | 335 | |
d17f3dbc | 336 | =over 4 |
b16cfc56 JV |
337 | |
338 | =item * | |
339 | ||
d17f3dbc | 340 | XXX |
b16cfc56 | 341 | |
3a5c9134 CBW |
342 | =back |
343 | ||
9f7a72d0 | 344 | =head1 Platform Support |
3a5c9134 | 345 | |
d17f3dbc | 346 | XXX Any changes to platform support should be listed in the sections below. |
b16cfc56 | 347 | |
d17f3dbc JV |
348 | [ Within the sections, list each platform as a =item entry with specific |
349 | changes as paragraphs below it. ] | |
b16cfc56 | 350 | |
d17f3dbc | 351 | =head2 New Platforms |
3a5c9134 | 352 | |
d17f3dbc JV |
353 | XXX List any platforms that this version of perl compiles on, that previous |
354 | versions did not. These will either be enabled by new files in the F<hints/> | |
355 | directories, or new subdirectories and F<README> files at the top level of the | |
356 | source tree. | |
3a5c9134 | 357 | |
9f7a72d0 | 358 | =over 4 |
3a5c9134 | 359 | |
d17f3dbc | 360 | =item XXX-some-platform |
b16cfc56 | 361 | |
d17f3dbc | 362 | XXX |
b16cfc56 | 363 | |
d17f3dbc | 364 | =back |
b16cfc56 | 365 | |
d17f3dbc | 366 | =head2 Discontinued Platforms |
b16cfc56 | 367 | |
d17f3dbc | 368 | XXX List any platforms that this version of perl no longer compiles on. |
b16cfc56 | 369 | |
d17f3dbc | 370 | =over 4 |
b16cfc56 | 371 | |
d17f3dbc | 372 | =item XXX-some-platform |
b16cfc56 | 373 | |
d17f3dbc | 374 | XXX |
b16cfc56 JV |
375 | |
376 | =back | |
377 | ||
d17f3dbc | 378 | =head2 Platform-Specific Notes |
b16cfc56 | 379 | |
d17f3dbc JV |
380 | XXX List any changes for specific platforms. This could include configuration |
381 | and compilation changes or changes in portability/compatibility. However, | |
382 | changes within modules for platforms should generally be listed in the | |
383 | L</Modules and Pragmata> section. | |
3a5c9134 | 384 | |
9f7a72d0 | 385 | =over 4 |
3a5c9134 | 386 | |
347ee86f | 387 | =item Windows |
c61b6d0f | 388 | |
347ee86f TC |
389 | =over 4 |
390 | ||
391 | =item * | |
392 | ||
393 | The C<test-prep> build target now depends on F<pod/perltoc.pod> to allow the | |
394 | F<t/porting/buildtoc.t> test to run successfully. | |
395 | ||
396 | =back | |
6d4f9cf2 | 397 | |
d17f3dbc | 398 | =back |
a62b1201 | 399 | |
d17f3dbc | 400 | =head1 Internal Changes |
a62b1201 | 401 | |
d17f3dbc JV |
402 | XXX Changes which affect the interface available to C<XS> code go here. |
403 | Other significant internal changes for future core maintainers should | |
404 | be noted as well. | |
b030240b | 405 | |
d17f3dbc | 406 | [ List each test improvement as a =item entry ] |
b030240b | 407 | |
d17f3dbc | 408 | =over 4 |
b16cfc56 | 409 | |
4dc93f40 JV |
410 | =item * |
411 | ||
d17f3dbc | 412 | XXX |
b16cfc56 | 413 | |
3a5c9134 CBW |
414 | =back |
415 | ||
416 | =head1 Selected Bug Fixes | |
417 | ||
d17f3dbc JV |
418 | XXX Important bug fixes in the core language are summarised here. |
419 | Bug fixes in files in F<ext/> and F<lib/> are best summarised in | |
420 | L</Modules and Pragmata>. | |
0c7420e7 | 421 | |
d17f3dbc | 422 | [ List each fix as a =item entry ] |
0c7420e7 | 423 | |
d17f3dbc | 424 | =over 4 |
f3fe4ed7 | 425 | |
712ef7ca FC |
426 | =item * |
427 | ||
e40e74fe KW |
428 | A Unicode C<\p{}> property match in a regular rexpression pattern will |
429 | now force Unicode rules for the rest of the regular expression | |
712ef7ca | 430 | |
d17f3dbc | 431 | =back |
ecede56a | 432 | |
d17f3dbc | 433 | =head1 Known Problems |
ecede56a | 434 | |
d17f3dbc JV |
435 | XXX Descriptions of platform agnostic bugs we know we can't fix go here. Any |
436 | tests that had to be C<TODO>ed for the release would be noted here, unless | |
437 | they were specific to a particular platform (see below). | |
ecede56a | 438 | |
d17f3dbc JV |
439 | This is a list of some significant unfixed bugs, which are regressions |
440 | from either 5.XXX.XXX or 5.XXX.XXX. | |
d4560299 | 441 | |
d17f3dbc | 442 | [ List each fix as a =item entry ] |
d4560299 | 443 | |
d17f3dbc | 444 | =over 4 |
d4560299 | 445 | |
7db1267d KW |
446 | =item * |
447 | ||
d17f3dbc | 448 | XXX |
7db1267d | 449 | |
9f7a72d0 | 450 | =back |
460c4bfb | 451 | |
d17f3dbc | 452 | =head1 Obituary |
836d5805 | 453 | |
d17f3dbc JV |
454 | XXX If any significant core contributor has died, we've added a short obituary |
455 | here. | |
3a5c9134 | 456 | |
9f7a72d0 | 457 | =head1 Acknowledgements |
b0c3724f | 458 | |
d17f3dbc | 459 | XXX The list of people to thank goes here. |
3a5c9134 CBW |
460 | |
461 | =head1 Reporting Bugs | |
462 | ||
463 | If you find what you think is a bug, you might check the articles | |
464 | recently posted to the comp.lang.perl.misc newsgroup and the perl | |
465 | bug database at http://rt.perl.org/perlbug/ . There may also be | |
466 | information at http://www.perl.org/ , the Perl Home Page. | |
467 | ||
468 | If you believe you have an unreported bug, please run the L<perlbug> | |
469 | program included with your release. Be sure to trim your bug down | |
470 | to a tiny but sufficient test case. Your bug report, along with the | |
471 | output of C<perl -V>, will be sent off to perlbug@perl.org to be | |
472 | analysed by the Perl porting team. | |
473 | ||
474 | If the bug you are reporting has security implications, which make it | |
475 | inappropriate to send to a publicly archived mailing list, then please send | |
476 | it to perl5-security-report@perl.org. This points to a closed subscription | |
477 | unarchived mailing list, which includes all the core committers, who be able | |
478 | to help assess the impact of issues, figure out a resolution, and help | |
479 | co-ordinate the release of patches to mitigate or fix the problem across all | |
480 | platforms on which Perl is supported. Please only use this address for | |
481 | security issues in the Perl core, not for modules independently | |
482 | distributed on CPAN. | |
483 | ||
484 | =head1 SEE ALSO | |
485 | ||
486 | The F<Changes> file for an explanation of how to view exhaustive details | |
487 | on what changed. | |
488 | ||
489 | The F<INSTALL> file for how to build Perl. | |
490 | ||
491 | The F<README> file for general stuff. | |
492 | ||
493 | The F<Artistic> and F<Copying> files for copyright information. | |
494 | ||
495 | =cut |