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revision 128 by ph10, Tue Mar 20 11:46:50 2007 UTC revision 672 by ph10, Tue Aug 23 16:45:55 2011 UTC
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1  News about PCRE releases  News about PCRE releases
2  ------------------------  ------------------------
4    Release 8.20
5    ------------
7  Release 7.1 20-Mar-07  The main change in this release is the inclusion of Zoltan Herczeg's
8    just-in-time compiler support, which can be accessed by building PCRE with
9    --enable-jit. Large performance benefits can be had in many situations. 8.20
10    also fixes an unfortunate bug that was introduced in 8.13 as well as tidying up
11    a couple of infelicities.
14    Release 8.13 16-Aug-2011
15    ------------------------
17    This is mainly a bug-fix release. There has been a lot of internal refactoring.
18    The Unicode tables have been updated. The only new feature in the library is
19    the passing of *MARK information to callouts. Some additions have been made to
20    pcretest to make testing easier and more comprehensive. There is a new option
21    for pcregrep to adjust its internal buffer size.
24    Release 8.12 15-Jan-2011
25    ------------------------
27    This release fixes some bugs in pcregrep, one of which caused the tests to fail
28    on 64-bit big-endian systems. There are no changes to the code of the library.
31    Release 8.11 10-Dec-2010
32    ------------------------
34    A number of bugs in the library and in pcregrep have been fixed. As always, see
35    ChangeLog for details. The following are the non-bug-fix changes:
37    . Added --match-limit and --recursion-limit to pcregrep.
39    . Added an optional parentheses number to the -o and --only-matching options
40      of pcregrep.
42    . Changed the way PCRE_PARTIAL_HARD affects the matching of $, \z, \Z, \b, and
43      \B.
45    . Added PCRE_ERROR_SHORTUTF8 to make it possible to distinguish between a
46      bad UTF-8 sequence and one that is incomplete when using PCRE_PARTIAL_HARD.
48    . Recognize (*NO_START_OPT) at the start of a pattern to set the PCRE_NO_
49      START_OPTIMIZE option, which is now allowed at compile time
52    Release 8.10 25-Jun-2010
53    ------------------------
55    There are two major additions: support for (*MARK) and friends, and the option
56    PCRE_UCP, which changes the behaviour of \b, \d, \s, and \w (and their
57    opposites) so that they make use of Unicode properties. There are also a number
58    of lesser new features, and several bugs have been fixed. A new option,
59    --line-buffered, has been added to pcregrep, for use when it is connected to
60    pipes.
63    Release 8.02 19-Mar-2010
64    ------------------------
66    Another bug-fix release.
69    Release 8.01 19-Jan-2010
70    ------------------------
72    This is a bug-fix release. Several bugs in the code itself and some bugs and
73    infelicities in the build system have been fixed.
76    Release 8.00 19-Oct-09
77    ----------------------
79    Bugs have been fixed in the library and in pcregrep. There are also some
80    enhancements. Restrictions on patterns used for partial matching have been
81    removed, extra information is given for partial matches, the partial matching
82    process has been improved, and an option to make a partial match override a
83    full match is available. The "study" process has been enhanced by finding a
84    lower bound matching length. Groups with duplicate numbers may now have
85    duplicated names without the use of PCRE_DUPNAMES. However, they may not have
86    different names. The documentation has been revised to reflect these changes.
87    The version number has been expanded to 3 digits as it is clear that the rate
88    of change is not slowing down.
91    Release 7.9 11-Apr-09
92    ---------------------
94    Mostly bugfixes and tidies with just a couple of minor functional additions.
97    Release 7.8 05-Sep-08
98  ---------------------  ---------------------
100  There are no new features in this release. A few bugs are fixed (see ChangeLog  More bug fixes, plus a performance improvement in Unicode character property
101  for details), but the major change is a complete re-implementation of the build  lookup.
102  system. This now has full Autotools support and so is now "standard" in some  
103  sense. It should help with compiling PCRE in a wide variety of environments.  
104    Release 7.7 07-May-08
105    ---------------------
107    This is once again mainly a bug-fix release, but there are a couple of new
108    features.
111    Release 7.6 28-Jan-08
112    ---------------------
114    The main reason for having this release so soon after 7.5 is because it fixes a
115    potential buffer overflow problem in pcre_compile() when run in UTF-8 mode. In
116    addition, the CMake configuration files have been brought up to date.
119    Release 7.5 10-Jan-08
120    ---------------------
122    This is mainly a bug-fix release. However the ability to link pcregrep with
123    libz or libbz2 and the ability to link pcretest with libreadline have been
124    added. Also the --line-offsets and --file-offsets options were added to
125    pcregrep.
128    Release 7.4 21-Sep-07
129    ---------------------
131    The only change of specification is the addition of options to control whether
132    \R matches any Unicode line ending (the default) or just CR, LF, and CRLF.
133    Otherwise, the changes are bug fixes and a refactoring to reduce the number of
134    relocations needed in a shared library. There have also been some documentation
135    updates, in particular, some more information about using CMake to build PCRE
136    has been added to the NON-UNIX-USE file.
139    Release 7.3 28-Aug-07
140    ---------------------
142    Most changes are bug fixes. Some that are not:
144    1. There is some support for Perl 5.10's experimental "backtracking control
145       verbs" such as (*PRUNE).
147    2. UTF-8 checking is now as per RFC 3629 instead of RFC 2279; this is more
148       restrictive in the strings it accepts.
150    3. Checking for potential integer overflow has been made more dynamic, and as a
151       consequence there is no longer a hard limit on the size of a subpattern that
152       has a limited repeat count.
154    4. When CRLF is a valid line-ending sequence, pcre_exec() and pcre_dfa_exec()
155       no longer advance by two characters instead of one when an unanchored match
156       fails at CRLF if there are explicit CR or LF matches within the pattern.
157       This gets rid of some anomalous effects that previously occurred.
159    5. Some PCRE-specific settings for varying the newline options at the start of
160       a pattern have been added.
163    Release 7.2 19-Jun-07
164    ---------------------
166    WARNING: saved patterns that were compiled by earlier versions of PCRE must be
167    recompiled for use with 7.2 (necessitated by the addition of \K, \h, \H, \v,
168    and \V).
170    Correction to the notes for 7.1: the note about shared libraries for Windows is
171    wrong. Previously, three libraries were built, but each could function
172    independently. For example, the pcreposix library also included all the
173    functions from the basic pcre library. The change is that the three libraries
174    are no longer independent. They are like the Unix libraries. To use the
175    pcreposix functions, for example, you need to link with both the pcreposix and
176    the basic pcre library.
178    Some more features from Perl 5.10 have been added:
180      (?-n) and (?+n) relative references for recursion and subroutines.
182      (?(-n) and (?(+n) relative references as conditions.
184      \k{name} and \g{name} are synonyms for \k<name>.
186      \K to reset the start of the matched string; for example, (foo)\Kbar
187      matches bar preceded by foo, but only sets bar as the matched string.
189      (?| introduces a group where the capturing parentheses in each alternative
190      start from the same number; for example, (?|(abc)|(xyz)) sets capturing
191      parentheses number 1 in both cases.
193      \h, \H, \v, \V match horizontal and vertical whitespace, respectively.
196    Release 7.1 24-Apr-07
197    ---------------------
199    There is only one new feature in this release: a linebreak setting of
200    PCRE_NEWLINE_ANYCRLF. It is a cut-down version of PCRE_NEWLINE_ANY, which
201    recognizes only CRLF, CR, and LF as linebreaks.
203    A few bugs are fixed (see ChangeLog for details), but the major change is a
204    complete re-implementation of the build system. This now has full Autotools
205    support and so is now "standard" in some sense. It should help with compiling
206    PCRE in a wide variety of environments.
208    NOTE: when building shared libraries for Windows, three dlls are now built,
209    called libpcre, libpcreposix, and libpcrecpp. Previously, everything was
210    included in a single dll.
212  An important change is that the dftables auxiliary program is no longer  Another important change is that the dftables auxiliary program is no longer
213  compiled and run at "make" time by default. Instead, a default set of character  compiled and run at "make" time by default. Instead, a default set of character
214  tables (assuming ASCII coding) is used. If you want to use dftables to generate  tables (assuming ASCII coding) is used. If you want to use dftables to generate
215  the character tables as previously, add --enable-rebuild-chartables to the  the character tables as previously, add --enable-rebuild-chartables to the

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