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revision 167 by ph10, Wed May 9 15:53:54 2007 UTC revision 508 by ph10, Fri Mar 19 10:26:03 2010 UTC
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1  News about PCRE releases  News about PCRE releases
2  ------------------------  ------------------------
3    
4    Release 8.02 19-Mar-2010
5    ------------------------
6    
7    Another bug-fix release.
8    
9    
10    Release 8.01 19-Jan-2010
11    ------------------------
12    
13    This is a bug-fix release. Several bugs in the code itself and some bugs and
14    infelicities in the build system have been fixed.
15    
16    
17  Release 7.2 30-Apr-07  Release 8.00 19-Oct-09
18    ----------------------
19    
20    Bugs have been fixed in the library and in pcregrep. There are also some
21    enhancements. Restrictions on patterns used for partial matching have been
22    removed, extra information is given for partial matches, the partial matching
23    process has been improved, and an option to make a partial match override a
24    full match is available. The "study" process has been enhanced by finding a
25    lower bound matching length. Groups with duplicate numbers may now have
26    duplicated names without the use of PCRE_DUPNAMES. However, they may not have
27    different names. The documentation has been revised to reflect these changes.
28    The version number has been expanded to 3 digits as it is clear that the rate
29    of change is not slowing down.
30    
31    
32    Release 7.9 11-Apr-09
33  ---------------------  ---------------------
34    
35    Mostly bugfixes and tidies with just a couple of minor functional additions.
36    
37    
38    Release 7.8 05-Sep-08
39    ---------------------
40    
41    More bug fixes, plus a performance improvement in Unicode character property
42    lookup.
43    
44    
45    Release 7.7 07-May-08
46    ---------------------
47    
48    This is once again mainly a bug-fix release, but there are a couple of new
49    features.
50    
51    
52    Release 7.6 28-Jan-08
53    ---------------------
54    
55    The main reason for having this release so soon after 7.5 is because it fixes a
56    potential buffer overflow problem in pcre_compile() when run in UTF-8 mode. In
57    addition, the CMake configuration files have been brought up to date.
58    
59    
60    Release 7.5 10-Jan-08
61    ---------------------
62    
63    This is mainly a bug-fix release. However the ability to link pcregrep with
64    libz or libbz2 and the ability to link pcretest with libreadline have been
65    added. Also the --line-offsets and --file-offsets options were added to
66    pcregrep.
67    
68    
69    Release 7.4 21-Sep-07
70    ---------------------
71    
72    The only change of specification is the addition of options to control whether
73    \R matches any Unicode line ending (the default) or just CR, LF, and CRLF.
74    Otherwise, the changes are bug fixes and a refactoring to reduce the number of
75    relocations needed in a shared library. There have also been some documentation
76    updates, in particular, some more information about using CMake to build PCRE
77    has been added to the NON-UNIX-USE file.
78    
79    
80    Release 7.3 28-Aug-07
81    ---------------------
82    
83    Most changes are bug fixes. Some that are not:
84    
85    1. There is some support for Perl 5.10's experimental "backtracking control
86       verbs" such as (*PRUNE).
87    
88    2. UTF-8 checking is now as per RFC 3629 instead of RFC 2279; this is more
89       restrictive in the strings it accepts.
90    
91    3. Checking for potential integer overflow has been made more dynamic, and as a
92       consequence there is no longer a hard limit on the size of a subpattern that
93       has a limited repeat count.
94    
95    4. When CRLF is a valid line-ending sequence, pcre_exec() and pcre_dfa_exec()
96       no longer advance by two characters instead of one when an unanchored match
97       fails at CRLF if there are explicit CR or LF matches within the pattern.
98       This gets rid of some anomalous effects that previously occurred.
99    
100    5. Some PCRE-specific settings for varying the newline options at the start of
101       a pattern have been added.
102    
103    
104    Release 7.2 19-Jun-07
105    ---------------------
106    
107    WARNING: saved patterns that were compiled by earlier versions of PCRE must be
108    recompiled for use with 7.2 (necessitated by the addition of \K, \h, \H, \v,
109    and \V).
110    
111  Correction to the notes for 7.1: the note about shared libraries for Windows is  Correction to the notes for 7.1: the note about shared libraries for Windows is
112  wrong. Previously, three libraries were built, but each could function  wrong. Previously, three libraries were built, but each could function
113  independently. For example, the pcreposix library also included all the  independently. For example, the pcreposix library also included all the
# Line 16  the basic pcre library. Line 119  the basic pcre library.
119  Some more features from Perl 5.10 have been added:  Some more features from Perl 5.10 have been added:
120    
121    (?-n) and (?+n) relative references for recursion and subroutines.    (?-n) and (?+n) relative references for recursion and subroutines.
122    
123    (Not sure if this one is actually in Perl 5.10)    (?(-n) and (?(+n) relative references as conditions.
124    (?(-n) and (?(+n) relative references as conditions.  
125      \k{name} and \g{name} are synonyms for \k<name>.
126    
127      \K to reset the start of the matched string; for example, (foo)\Kbar
128      matches bar preceded by foo, but only sets bar as the matched string.
129    
130      (?| introduces a group where the capturing parentheses in each alternative
131      start from the same number; for example, (?|(abc)|(xyz)) sets capturing
132      parentheses number 1 in both cases.
133    
134      \h, \H, \v, \V match horizontal and vertical whitespace, respectively.
135    
136    
137  Release 7.1 24-Apr-07  Release 7.1 24-Apr-07

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