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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. |