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revision 87 by nigel, Sat Feb 24 21:41:21 2007 UTC revision 167 by ph10, Wed May 9 15:53:54 2007 UTC
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1  News about PCRE releases  News about PCRE releases
2  ------------------------  ------------------------
5    Release 7.2 30-Apr-07
6    ---------------------
8    Correction to the notes for 7.1: the note about shared libraries for Windows is
9    wrong. Previously, three libraries were built, but each could function
10    independently. For example, the pcreposix library also included all the
11    functions from the basic pcre library. The change is that the three libraries
12    are no longer independent. They are like the Unix libraries. To use the
13    pcreposix functions, for example, you need to link with both the pcreposix and
14    the basic pcre library.
16    Some more features from Perl 5.10 have been added:
18      (?-n) and (?+n) relative references for recursion and subroutines.
20      (Not sure if this one is actually in Perl 5.10)
21      (?(-n) and (?(+n) relative references as conditions.
24    Release 7.1 24-Apr-07
25    ---------------------
27    There is only one new feature in this release: a linebreak setting of
28    PCRE_NEWLINE_ANYCRLF. It is a cut-down version of PCRE_NEWLINE_ANY, which
29    recognizes only CRLF, CR, and LF as linebreaks.
31    A few bugs are fixed (see ChangeLog for details), but the major change is a
32    complete re-implementation of the build system. This now has full Autotools
33    support and so is now "standard" in some sense. It should help with compiling
34    PCRE in a wide variety of environments.
36    NOTE: when building shared libraries for Windows, three dlls are now built,
37    called libpcre, libpcreposix, and libpcrecpp. Previously, everything was
38    included in a single dll.
40    Another important change is that the dftables auxiliary program is no longer
41    compiled and run at "make" time by default. Instead, a default set of character
42    tables (assuming ASCII coding) is used. If you want to use dftables to generate
43    the character tables as previously, add --enable-rebuild-chartables to the
44    "configure" command. You must do this if you are compiling PCRE to run on a
45    system that uses EBCDIC code.
47    There is a discussion about character tables in the README file. The default is
48    not to use dftables so that that there is no problem when cross-compiling.
51    Release 7.0 19-Dec-06
52    ---------------------
54    This release has a new major number because there have been some internal
55    upheavals to facilitate the addition of new optimizations and other facilities,
56    and to make subsequent maintenance and extension easier. Compilation is likely
57    to be a bit slower, but there should be no major effect on runtime performance.
58    Previously compiled patterns are NOT upwards compatible with this release. If
59    you have saved compiled patterns from a previous release, you will have to
60    re-compile them. Important changes that are visible to users are:
62    1. The Unicode property tables have been updated to Unicode 5.0.0, which adds
63       some more scripts.
65    2. The option PCRE_NEWLINE_ANY causes PCRE to recognize any Unicode newline
66       sequence as a newline.
68    3. The \R escape matches a single Unicode newline sequence as a single unit.
70    4. New features that will appear in Perl 5.10 are now in PCRE. These include
71       alternative Perl syntax for named parentheses, and Perl syntax for
72       recursion.
74    5. The C++ wrapper interface has been extended by the addition of a
75       QuoteMeta function and the ability to allow copy construction and
76       assignment.
78    For a complete list of changes, see the ChangeLog file.
81    Release 6.7 04-Jul-06
82    ---------------------
84    The main additions to this release are the ability to use the same name for
85    multiple sets of parentheses, and support for CRLF line endings in both the
86    library and pcregrep (and in pcretest for testing).
88    Thanks to Ian Taylor, the stack usage for many kinds of pattern has been
89    significantly reduced for certain subject strings.
92  Release 6.5 01-Feb-06  Release 6.5 01-Feb-06
93  ---------------------  ---------------------

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