perl585delta
(1)
Name
perl585delta - what is new for perl v5.8.5
Synopsis
Please see following description for synopsis
Description
Perl Programmers Reference Guide PERL585DELTA(1)
NAME
perl585delta - what is new for perl v5.8.5
DESCRIPTION
This document describes differences between the 5.8.4
release and the 5.8.5 release.
Incompatible Changes
There are no changes incompatible with 5.8.4.
Core Enhancements
Perl's regular expression engine now contains support for
matching on the intersection of two Unicode character
classes. You can also now refer to user-defined character
classes from within other user defined character classes.
Modules and Pragmata
o Carp improved to work nicely with Safe. Carp's message
reporting should now be anomaly free - it will always
print out line number information.
o CGI upgraded to version 3.05
o charnames now avoids clobbering $_
o Digest upgraded to version 1.08
o Encode upgraded to version 2.01
o FileCache upgraded to version 1.04
o libnet upgraded to version 1.19
o Pod::Parser upgraded to version 1.28
o Pod::Perldoc upgraded to version 3.13
o Pod::LaTeX upgraded to version 0.57
o Safe now works properly with Carp
o Scalar-List-Utils upgraded to version 1.14
o Shell's documentation has been re-written, and its
historical partial auto-quoting of command arguments can
now be disabled.
o Test upgraded to version 1.25
o Test::Harness upgraded to version 2.42
o Time::Local upgraded to version 1.10
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o Unicode::Collate upgraded to version 0.40
o Unicode::Normalize upgraded to version 0.30
Utility Changes
Perl's debugger
The debugger can now emulate stepping backwards, by
restarting and rerunning all bar the last command from a
saved command history.
h2ph
h2ph is now able to understand a very limited set of C
inline functions -- basically, the inline functions that
look like CPP macros. This has been introduced to deal with
some of the headers of the newest versions of the glibc. The
standard warning still applies; to quote h2ph's
documentation, you may need to dicker with the files
produced.
Installation and Configuration Improvements
Perl 5.8.5 should build cleanly from source on LynxOS.
Selected Bug Fixes
o The in-place sort optimisation introduced in 5.8.4 had a
bug. For example, in code such as
@a = sort ($b, @a)
the result would omit the value $b. This is now fixed.
o The optimisation for unnecessary assignments introduced
in 5.8.4 could give spurious warnings. This has been
fixed.
o Perl should now correctly detect and read BOM-marked and
(BOMless) UTF-16 scripts of either endianness.
o Creating a new thread when weak references exist was
buggy, and would often cause warnings at interpreter
destruction time. The known bug is now fixed.
o Several obscure bugs involving manipulating Unicode
strings with "substr" have been fixed.
o Previously if Perl's file globbing function encountered
a directory that it did not have permission to open it
would return immediately, leading to unexpected
truncation of the list of results. This has been fixed,
to be consistent with Unix shells' globbing behaviour.
o Thread creation time could vary wildly between identical
runs. This was caused by a poor hashing algorithm in the
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Perl Programmers Reference Guide PERL585DELTA(1)
thread cloning routines, which has now been fixed.
o The internals of the ithreads implementation were not
checking if OS-level thread creation had failed.
threads->create() now returns "undef" in if thread
creation fails instead of crashing perl.
New or Changed Diagnostics
o Perl -V has several improvements
o correctly outputs local patch names that contain
embedded code snippets or other characters that used
to confuse it.
o arguments to -V that look like regexps will give
multiple lines of output.
o a trailing colon suppresses the linefeed and ';'
terminator, allowing embedding of queries into shell
commands.
o a leading colon removes the 'name=' part of the
response, allowing mapping to any name.
o When perl fails to find the specified script, it now
outputs a second line suggesting that the user use the
"-S" flag:
$ perl5.8.5 missing.pl
Can't open perl script "missing.pl": No such file or directory.
Use -S to search $PATH for it.
Changed Internals
The Unicode character class files used by the regular
expression engine are now built at build time from the
supplied Unicode consortium data files, instead of being
shipped prebuilt. This makes the compressed Perl source
tarball about 200K smaller. A side effect is that the layout
of files inside lib/unicore has changed.
Known Problems
The regression test t/uni/class.t is now performing
considerably more tests, and can take several minutes to run
even on a fast machine.
Platform Specific Problems
This release is known not to build on Windows 95.
Reporting Bugs
If you find what you think is a bug, you might check the
articles recently posted to the comp.lang.perl.misc
newsgroup and the perl bug database at http://bugs.perl.org.
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Perl Programmers Reference Guide PERL585DELTA(1)
There may also be information at http://www.perl.org, the
Perl Home Page.
If you believe you have an unreported bug, please run the
perlbug program included with your release. Be sure to trim
your bug down to a tiny but sufficient test case. Your bug
report, along with the output of "perl -V", will be sent off
to [email protected] to be analysed by the Perl porting team.
You can browse and search the Perl 5 bugs at
http://bugs.perl.org/
ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
+---------------+------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------+
|Availability | runtime/perl-512 |
+---------------+------------------+
|Stability | Uncommitted |
+---------------+------------------+
SEE ALSO
The Changes file for exhaustive details on what changed.
The INSTALL file for how to build Perl.
The README file for general stuff.
The Artistic and Copying files for copyright information.
NOTES
This software was built from source available at
https://java.net/projects/solaris-userland. The original
community source was downloaded from
http://www.cpan.org/src/5.0/perl-5.12.5.tar.bz2
Further information about this software can be found on the
open source community website at http://www.perl.org/.
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