Commit | Line | Data |
d5114285 |
1 | =head1 NAME |
2 | |
3 | [ Any text flagged as XXX needs to be processed before release. ] |
4 | |
5 | perldelta - what is new for perl v5.11.2 |
6 | |
7 | =head1 DESCRIPTION |
8 | |
9 | This document describes differences between the 5.11.1 release and |
10 | the 5.11.2 release. |
11 | |
12 | =head1 Notice |
13 | |
14 | XXX Unlikely to need this section. |
15 | |
16 | =head1 Incompatible Changes |
17 | |
d83f38d8 |
18 | =head2 Use of C<:=> to mean an empty attribute list is now deprecated. |
d5114285 |
19 | |
d83f38d8 |
20 | An accident of Perl's parser means that these constructions are all equivalent: |
d5114285 |
21 | |
d83f38d8 |
22 | my $pi := 4; |
23 | my $pi : = 4; |
24 | my $pi : = 4; |
25 | |
26 | with the C<:> being treated as the start of an attribute list, which ends |
27 | before the C<=>. As whitespace is not significant here, all are parsed as an |
28 | empty attribute list, hence all the above are equivalent to, and better written |
29 | as |
30 | |
31 | my $pi = 4; |
32 | |
33 | because no attribute processing is done for an empty list. |
34 | |
35 | As is, this means that C<:=> cannot be used as a new token, without silently |
36 | changing the meaning of existing code. Hence that particular form is now |
37 | deprecated, and will become a syntax error. If it is absolutely necessary to |
38 | have empty attribute lists (for example, because of a code generator) the |
39 | avoid the warning by adding a space before the C<=>. |
d5114285 |
40 | |
41 | =head1 Core Enhancements |
42 | |
43 | XXX New core language features go here. Summarise user-visible core language |
44 | enhancements. Particularly prominent performance optimisations could go |
45 | here, but most should go in the L</Performance Enhancements> section. |
46 | |
97352077 |
47 | =head2 qr overloading |
48 | |
49 | It is now possible to overload the C<qr//> operator, that is, conversion |
50 | to regexp, like it was already possible to overload conversion to |
51 | boolean, string or number of objects. It is invoked when an object |
52 | appears on the right hand side of the C<=~> operator, or when it is |
53 | interpolated into a regexp. See L<overload>. |
54 | |
d5114285 |
55 | =head1 New Platforms |
56 | |
57 | XXX List any platforms that this version of perl compiles on, that previous |
58 | versions did not. These will either be enabled by new files in the F<hints/> |
59 | directories, or new subdirectories and F<README> files at the top level of the |
60 | source tree. |
61 | |
62 | =head1 Modules and Pragmata |
63 | |
64 | XXX All changes to installed files in F<cpan/>, F<dist/>, F<ext/> and F<lib/> |
65 | go here, in a list ordered by distribution name. Minimally it should be the |
66 | module version, but it's more useful to the end user to give a paragraph's |
67 | summary of the module's changes. In an ideal world, dual-life modules would |
68 | have a F<Changes> file that could be cribbed. |
69 | |
70 | =head2 New Modules and Pragmata |
71 | |
72 | =over 4 |
73 | |
74 | =item C<XXX> |
75 | |
76 | XXX |
77 | |
78 | =back |
79 | |
80 | =head2 Pragmata Changes |
81 | |
82 | =over 4 |
83 | |
84 | =item C<XXX> |
85 | |
86 | XXX |
87 | |
88 | =back |
89 | |
90 | =head2 Updated Modules |
91 | |
92 | =over 4 |
93 | |
94 | =item C<XXX> |
95 | |
96 | XXX |
97 | |
98 | =back |
99 | |
100 | =head1 Utility Changes |
101 | |
102 | XXX Changes to installed programs such as F<perlbug> and F<xsubpp> go |
103 | here. Most of these are built within the directories F<utils> and F<x2p>. |
104 | |
105 | =over 4 |
106 | |
107 | =item F<XXX> |
108 | |
109 | XXX |
110 | |
111 | =back |
112 | |
113 | =head1 New Documentation |
114 | |
115 | XXX Changes which create B<new> files in F<pod/> go here. |
116 | |
117 | =over 4 |
118 | |
119 | =item L<XXX> |
120 | |
121 | XXX |
122 | |
123 | =back |
124 | |
125 | =head1 Changes to Existing Documentation |
126 | |
127 | XXX Changes which significantly change existing files in F<pod/> go here. |
128 | Any changes to F<pod/perldiag.pod> should go in L</New or Changed Diagnostics>. |
129 | |
130 | |
131 | =head1 Performance Enhancements |
132 | |
133 | XXX Changes which enhance performance without changing behaviour go here. There |
134 | may well be none in a stable release. |
135 | |
136 | =over 4 |
137 | |
138 | =item * |
139 | |
140 | XXX |
141 | |
142 | =back |
143 | |
144 | =head1 Installation and Configuration Improvements |
145 | |
146 | XXX Changes to F<Configure>, F<installperl>, F<installman>, and analogous tools |
147 | go here. |
148 | |
149 | =head2 Configuration improvements |
150 | |
151 | XXX |
152 | |
153 | =head2 Compilation improvements |
154 | |
155 | XXX |
156 | |
157 | =head2 Platform Specific Changes |
158 | |
159 | =over 4 |
160 | |
161 | =item XXX-some-platform |
162 | |
163 | XXX |
164 | |
165 | =back |
166 | |
167 | =head1 Selected Bug Fixes |
168 | |
169 | XXX Important bug fixes in the core language are summarised here. |
170 | Bug fixes in files in F<ext/> and F<lib/> are best summarised in |
171 | L</Modules and Pragmata>. |
172 | |
173 | =over 4 |
174 | |
175 | =item * |
176 | |
177 | XXX |
178 | |
179 | =back |
180 | |
181 | =head1 New or Changed Diagnostics |
182 | |
183 | XXX New or changed warnings emitted by the core's C<C> code go here. |
184 | |
185 | =over 4 |
186 | |
187 | =item C<XXX> |
188 | |
189 | XXX |
190 | |
191 | =back |
192 | |
193 | =head1 Changed Internals |
194 | |
d5114285 |
195 | =over 4 |
196 | |
197 | =item * |
198 | |
879d0c72 |
199 | C<Perl_pmflag> has been removed from the public API. Calling it now generates |
200 | a deprecation warning, and it will be removed in a future release. Although |
201 | listed as part of the API, it was never documented, and only ever used in |
202 | F<toke.c>, and prior to 5.10, F<regcomp.c>. In core, it has been replaced by a |
203 | static function. |
d5114285 |
204 | |
205 | =back |
206 | |
207 | =head1 New Tests |
208 | |
209 | XXX Changes which create B<new> files in F<t/> go here. Changes to |
210 | existing files in F<t/> aren't worth summarising, although the bugs that |
211 | they represent may be. |
212 | |
213 | =over 4 |
214 | |
215 | =item F<XXX> |
216 | |
217 | XXX |
218 | |
219 | =back |
220 | |
221 | =head1 Known Problems |
222 | |
223 | XXX Descriptions of platform agnostic bugs we know we can't fix go here. Any |
224 | tests that had to be C<TODO>ed for the release would be noted here, unless |
225 | they were specific to a particular platform (see below). |
226 | |
227 | This is a list of some significant unfixed bugs, which are regressions |
228 | from either 5.10.1 or 5.11.1. |
229 | |
230 | =over 4 |
231 | |
232 | =item * |
233 | |
234 | XXX |
235 | |
236 | =back |
237 | |
238 | =head1 Deprecations |
239 | |
240 | XXX Add any new known deprecations here. |
241 | |
242 | The following items are now deprecated. |
243 | |
244 | =over 4 |
245 | |
246 | =item * |
247 | |
248 | XXX |
249 | |
250 | =back |
251 | |
252 | =head1 Platform Specific Notes |
253 | |
254 | XXX Any changes specific to a particular platform. VMS and Win32 are the usual |
255 | stars here. It's probably best to group changes under the same section layout |
256 | as the main perldelta |
257 | |
258 | =head1 Obituary |
259 | |
260 | XXX If any significant core contributor has died, we've added a short obituary |
261 | here. |
262 | |
263 | =head1 Acknowledgements |
264 | |
265 | XXX The list of people to thank goes here. |
266 | |
267 | |
268 | =head1 Reporting Bugs |
269 | |
270 | If you find what you think is a bug, you might check the articles |
271 | recently posted to the comp.lang.perl.misc newsgroup and the perl |
272 | bug database at http://rt.perl.org/perlbug/ . There may also be |
273 | information at http://www.perl.org/ , the Perl Home Page. |
274 | |
275 | If you believe you have an unreported bug, please run the B<perlbug> |
276 | program included with your release. Be sure to trim your bug down |
277 | to a tiny but sufficient test case. Your bug report, along with the |
278 | output of C<perl -V>, will be sent off to perlbug@perl.org to be |
279 | analysed by the Perl porting team. |
280 | |
281 | If the bug you are reporting has security implications, which make it |
282 | inappropriate to send to a publicly archived mailing list, then please send |
283 | it to perl5-security-report@perl.org. This points to a closed subscription |
284 | unarchived mailing list, which includes all the core committers, who be able |
285 | to help assess the impact of issues, figure out a resolution, and help |
286 | co-ordinate the release of patches to mitigate or fix the problem across all |
287 | platforms on which Perl is supported. Please only use this address for |
288 | security issues in the Perl core, not for modules independently |
289 | distributed on CPAN. |
290 | |
291 | =head1 SEE ALSO |
292 | |
293 | The F<Changes> file for an explanation of how to view exhaustive details |
294 | on what changed. |
295 | |
296 | The F<INSTALL> file for how to build Perl. |
297 | |
298 | The F<README> file for general stuff. |
299 | |
300 | The F<Artistic> and F<Copying> files for copyright information. |
301 | |
302 | =cut |