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129 | .\" ======================================================================== | |
130 | .\" | |
131 | .IX Title "PERL585DELTA 1" | |
132 | .TH PERL585DELTA 1 "2006-01-07" "perl v5.8.8" "Perl Programmers Reference Guide" | |
133 | .SH "NAME" | |
134 | perl585delta \- what is new for perl v5.8.5 | |
135 | .SH "DESCRIPTION" | |
136 | .IX Header "DESCRIPTION" | |
137 | This document describes differences between the 5.8.4 release and | |
138 | the 5.8.5 release. | |
139 | .SH "Incompatible Changes" | |
140 | .IX Header "Incompatible Changes" | |
141 | There are no changes incompatible with 5.8.4. | |
142 | .SH "Core Enhancements" | |
143 | .IX Header "Core Enhancements" | |
144 | Perl's regular expression engine now contains support for matching on the | |
145 | intersection of two Unicode character classes. You can also now refer to | |
146 | user-defined character classes from within other user defined character | |
147 | classes. | |
148 | .SH "Modules and Pragmata" | |
149 | .IX Header "Modules and Pragmata" | |
150 | .IP "\(bu" 4 | |
151 | Carp improved to work nicely with Safe. Carp's message reporting should now | |
152 | be anomaly free \- it will always print out line number information. | |
153 | .IP "\(bu" 4 | |
154 | \&\s-1CGI\s0 upgraded to version 3.05 | |
155 | .IP "\(bu" 4 | |
156 | charnames now avoids clobbering \f(CW$_\fR | |
157 | .IP "\(bu" 4 | |
158 | Digest upgraded to version 1.08 | |
159 | .IP "\(bu" 4 | |
160 | Encode upgraded to version 2.01 | |
161 | .IP "\(bu" 4 | |
162 | FileCache upgraded to version 1.04 | |
163 | .IP "\(bu" 4 | |
164 | libnet upgraded to version 1.19 | |
165 | .IP "\(bu" 4 | |
166 | Pod::Parser upgraded to version 1.28 | |
167 | .IP "\(bu" 4 | |
168 | Pod::Perldoc upgraded to version 3.13 | |
169 | .IP "\(bu" 4 | |
170 | Pod::LaTeX upgraded to version 0.57 | |
171 | .IP "\(bu" 4 | |
172 | Safe now works properly with Carp | |
173 | .IP "\(bu" 4 | |
174 | Scalar-List-Utils upgraded to version 1.14 | |
175 | .IP "\(bu" 4 | |
176 | Shell's documentation has been re\-written, and its historical partial | |
177 | auto-quoting of command arguments can now be disabled. | |
178 | .IP "\(bu" 4 | |
179 | Test upgraded to version 1.25 | |
180 | .IP "\(bu" 4 | |
181 | Test::Harness upgraded to version 2.42 | |
182 | .IP "\(bu" 4 | |
183 | Time::Local upgraded to version 1.10 | |
184 | .IP "\(bu" 4 | |
185 | Unicode::Collate upgraded to version 0.40 | |
186 | .IP "\(bu" 4 | |
187 | Unicode::Normalize upgraded to version 0.30 | |
188 | .SH "Utility Changes" | |
189 | .IX Header "Utility Changes" | |
190 | .Sh "Perl's debugger" | |
191 | .IX Subsection "Perl's debugger" | |
192 | The debugger can now emulate stepping backwards, by restarting and rerunning | |
193 | all bar the last command from a saved command history. | |
194 | .Sh "h2ph" | |
195 | .IX Subsection "h2ph" | |
196 | \&\fIh2ph\fR is now able to understand a very limited set of C inline functions | |
197 | \&\*(-- basically, the inline functions that look like \s-1CPP\s0 macros. This has | |
198 | been introduced to deal with some of the headers of the newest versions of | |
199 | the glibc. The standard warning still applies; to quote \fIh2ph\fR's | |
200 | documentation, \fIyou may need to dicker with the files produced\fR. | |
201 | .SH "Installation and Configuration Improvements" | |
202 | .IX Header "Installation and Configuration Improvements" | |
203 | Perl 5.8.5 should build cleanly from source on LynxOS. | |
204 | .SH "Selected Bug Fixes" | |
205 | .IX Header "Selected Bug Fixes" | |
206 | .IP "\(bu" 4 | |
207 | The in-place sort optimisation introduced in 5.8.4 had a bug. For example, | |
208 | in code such as | |
209 | .Sp | |
210 | .Vb 1 | |
211 | \& @a = sort ($b, @a) | |
212 | .Ve | |
213 | .Sp | |
214 | the result would omit the value \f(CW$b\fR. This is now fixed. | |
215 | .IP "\(bu" 4 | |
216 | The optimisation for unnecessary assignments introduced in 5.8.4 could give | |
217 | spurious warnings. This has been fixed. | |
218 | .IP "\(bu" 4 | |
219 | Perl should now correctly detect and read BOM-marked and (BOMless) \s-1UTF\-16\s0 | |
220 | scripts of either endianness. | |
221 | .IP "\(bu" 4 | |
222 | Creating a new thread when weak references exist was buggy, and would often | |
223 | cause warnings at interpreter destruction time. The known bug is now fixed. | |
224 | .IP "\(bu" 4 | |
225 | Several obscure bugs involving manipulating Unicode strings with \f(CW\*(C`substr\*(C'\fR have | |
226 | been fixed. | |
227 | .IP "\(bu" 4 | |
228 | Previously if Perl's file globbing function encountered a directory that it | |
229 | did not have permission to open it would return immediately, leading to | |
230 | unexpected truncation of the list of results. This has been fixed, to be | |
231 | consistent with Unix shells' globbing behaviour. | |
232 | .IP "\(bu" 4 | |
233 | Thread creation time could vary wildly between identical runs. This was caused | |
234 | by a poor hashing algorithm in the thread cloning routines, which has now | |
235 | been fixed. | |
236 | .IP "\(bu" 4 | |
237 | The internals of the ithreads implementation were not checking if OS-level | |
238 | thread creation had failed. threads\->\fIcreate()\fR now returns \f(CW\*(C`undef\*(C'\fR in if | |
239 | thread creation fails instead of crashing perl. | |
240 | .SH "New or Changed Diagnostics" | |
241 | .IX Header "New or Changed Diagnostics" | |
242 | .IP "\(bu" 4 | |
243 | Perl \-V has several improvements | |
244 | .RS 4 | |
245 | .IP "\(bu" 4 | |
246 | correctly outputs local patch names that contain embedded code snippets | |
247 | or other characters that used to confuse it. | |
248 | .IP "\(bu" 4 | |
249 | arguments to \-V that look like regexps will give multiple lines of output. | |
250 | .IP "\(bu" 4 | |
251 | a trailing colon suppresses the linefeed and ';' terminator, allowing | |
252 | embedding of queries into shell commands. | |
253 | .IP "\(bu" 4 | |
254 | a leading colon removes the 'name=' part of the response, allowing mapping to | |
255 | any name. | |
256 | .RE | |
257 | .RS 4 | |
258 | .RE | |
259 | .IP "\(bu" 4 | |
260 | When perl fails to find the specified script, it now outputs a second line | |
261 | suggesting that the user use the \f(CW\*(C`\-S\*(C'\fR flag: | |
262 | .Sp | |
263 | .Vb 3 | |
264 | \& $ perl5.8.5 missing.pl | |
265 | \& Can't open perl script "missing.pl": No such file or directory. | |
266 | \& Use -S to search $PATH for it. | |
267 | .Ve | |
268 | .SH "Changed Internals" | |
269 | .IX Header "Changed Internals" | |
270 | The Unicode character class files used by the regular expression engine are | |
271 | now built at build time from the supplied Unicode consortium data files, | |
272 | instead of being shipped prebuilt. This makes the compressed Perl source | |
273 | tarball about 200K smaller. A side effect is that the layout of files inside | |
274 | lib/unicore has changed. | |
275 | .SH "Known Problems" | |
276 | .IX Header "Known Problems" | |
277 | The regression test \fIt/uni/class.t\fR is now performing considerably more | |
278 | tests, and can take several minutes to run even on a fast machine. | |
279 | .SH "Platform Specific Problems" | |
280 | .IX Header "Platform Specific Problems" | |
281 | This release is known not to build on Windows 95. | |
282 | .SH "Reporting Bugs" | |
283 | .IX Header "Reporting Bugs" | |
284 | If you find what you think is a bug, you might check the articles | |
285 | recently posted to the comp.lang.perl.misc newsgroup and the perl | |
286 | bug database at http://bugs.perl.org. There may also be | |
287 | information at http://www.perl.org, the Perl Home Page. | |
288 | .PP | |
289 | If you believe you have an unreported bug, please run the \fBperlbug\fR | |
290 | program included with your release. Be sure to trim your bug down | |
291 | to a tiny but sufficient test case. Your bug report, along with the | |
292 | output of \f(CW\*(C`perl \-V\*(C'\fR, will be sent off to perlbug@perl.org to be | |
293 | analysed by the Perl porting team. You can browse and search | |
294 | the Perl 5 bugs at http://bugs.perl.org/ | |
295 | .SH "SEE ALSO" | |
296 | .IX Header "SEE ALSO" | |
297 | The \fIChanges\fR file for exhaustive details on what changed. | |
298 | .PP | |
299 | The \fI\s-1INSTALL\s0\fR file for how to build Perl. | |
300 | .PP | |
301 | The \fI\s-1README\s0\fR file for general stuff. | |
302 | .PP | |
303 | The \fIArtistic\fR and \fICopying\fR files for copyright information. |