NAME
    perl573delta - what's new for perl v5.7.3

DESCRIPTION
    This document describes differences between the 5.7.2 release and the
    5.7.3 release.

    (To view the differences between the 5.6.0 release and the 5.7.0
    release, see perl570delta. To view the differences between the 5.7.0
    release and the 5.7.1 release, see perl571delta.  To view the differ-
    ences between the 5.7.1 release and the 5.7.2 release, see
    perl572delta.)

Changes
    This is just a selected list of some of the more notable changes. The
    numbers refer to the Perl repository change numbers; see Changes58 (or
    Changes in Perl 5.8.1). In addition to these changes, lots of work
    took place in integrating threads, PerlIO, and Unicode; general code
    cleanup; and last but not least porting to non-UNIX lands such as
    Win32, VMS, Cygwin, DJGPP, VOS, MacOS Classic, and EBCDIC.

    11362
   add LC_MESSAGES to POSIX :locale_h export tag

    11371
   add DEL to [:cntrl:]

    11375
   make h2ph understand constants like 1234L and 5678LL

    11405
   Win32: fix bugs in handling of the virtualized environment

    11410
   fix a bug in the security taint checking of open()

    11423
   make perl fork() safe even on platforms that don't have
   pthread_atfork()

    11459
   make switching optimization and debugging levels during Perl builds
   easier via the OPTIMIZE environment variable

    11475
   make split()'s unused captures to be undef, not ''

    11485
   Search::Dict: allow transforming lines before comparing

    11490
   allow installing extra modules or bundles when building Perl

    11516
   add -Wall in cflags when compiling with gcc to weed out dubious C
   practices

    11541
   pluggable optimizer

    11549
   WinCE: integrate the port

    11589
   Win32: 4-arg select was broken

    11594
   introduce the perlivp utility for verifying the Perl installation
   (IVP = Installation Verification Procedure)

    11623
   rename lib/unicode to lib/unicore to avoid case-insensitivity prob-
   lems with lib/Unicode

    111631
   remove Time::Piece

    11643
   document that use utf8 is not the right way most of the time

    11656
   allow builing perl with -DUSE_UTF8_SCRIPTS which makes UTF-8 the
   default script encoding (not the default since that would break all
   scripts having legacy eight-bit data in them)

    11725
   division preserving 64-bit integers

    11743
   document the coderef-in-@INC feature

    11794
   modulo (%) preserving 64-bit integers

    11825
   update to Unicode 3.1.1

    11865
   add the \[$@%&*] prototype support

    11874
   oct() and hex() in glorious 64 bit

    11877
   Class::Struct: allow recursive classes

    11993
   fix unpack U to be the reverse of pack U

    12056
   VMS: waitpid enhancements

    12180
   unpack("Z*Z*", pack("Z*Z*", ..)) was broken

    12243
   Devel::Peek: display UTF-8 SVs also also as \x{...}

    12288
   Data::Dumper: option to sort hashes

    12542
   add perlpodspec

    12652
   threadsafe DynaLoader, re, Opcode, File::Glob, and B

    12756
   support BeOS better

    12874
   read-only hashes (user-level interface is Hash::Util)

    13162
   add Devel::PPPort

    13179
   add the sort pragma

    13326
   VMS: fix perl -P

    13358
   add perlpacktut

    13452
   SUPER-UX: add hints file

    13575
   Win32: non-blocking waitpid(-1,WNOHANG)

    13684
   introduce the -t option for gentler taint checking

    14694
   add the if pragma

    14832
   implement IV/UV/NV/long double un/packing with j/J/F/D

    14854
   document the new taint behaviour of exec LIST and system LIST

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. There may also be information at
    http://www.perl.com/, the Perl Home Page.

    If you believe you have an unreported bug, please run the perlbug pro-
    gram 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 perlbug@perl.org to be analysed by
    the Perl porting team.

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.

HISTORY
    Written by Jarkko Hietaniemi <jhi@iki.fi>, with many contributions from
    The Perl Porters and Perl Users submitting feedback and patches.

    Send omissions or corrections to <perlbug@perl.org>.