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code/trunk/NEWS revision 75 by nigel, Sat Feb 24 21:40:37 2007 UTC code/tags/pcre-6.6/NEWS revision 90 by nigel, Sat Feb 24 21:41:29 2007 UTC
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1  News about PCRE releases  News about PCRE releases
2  ------------------------  ------------------------
3    
4    Release 6.5 01-Feb-06
5    ---------------------
6    
7    Important changes in this release:
8    
9    1. A number of new features have been added to pcregrep.
10    
11    2. The Unicode property tables have been updated to Unicode 4.1.0, and the
12       supported properties have been extended with script names such as "Arabic",
13       and the derived properties "Any" and "L&". This has necessitated a change to
14       the interal format of compiled patterns. Any saved compiled patterns that
15       use \p or \P must be recompiled.
16    
17    3. The specification of recursion in patterns has been changed so that all
18       recursive subpatterns are automatically treated as atomic groups. Thus, for
19       example, (?R) is treated as if it were (?>(?R)). This is necessary because
20       otherwise there are situations where recursion does not work.
21    
22    See the ChangeLog for a complete list of changes, which include a number of bug
23    fixes and tidies.
24    
25    
26    Release 6.0 07-Jun-05
27    ---------------------
28    
29    The release number has been increased to 6.0 because of the addition of several
30    major new pieces of functionality.
31    
32    A new function, pcre_dfa_exec(), which implements pattern matching using a DFA
33    algorithm, has been added. This has a number of advantages for certain cases,
34    though it does run more slowly, and lacks the ability to capture substrings. On
35    the other hand, it does find all matches, not just the first, and it works
36    better for partial matching. The pcrematching man page discusses the
37    differences.
38    
39    The pcretest program has been enhanced so that it can make use of the new
40    pcre_dfa_exec() matching function and the extra features it provides.
41    
42    The distribution now includes a C++ wrapper library. This is built
43    automatically if a C++ compiler is found. The pcrecpp man page discusses this
44    interface.
45    
46    The code itself has been re-organized into many more files, one for each
47    function, so it no longer requires everything to be linked in when static
48    linkage is used. As a consequence, some internal functions have had to have
49    their names exposed. These functions all have names starting with _pcre_. They
50    are undocumented, and are not intended for use by outside callers.
51    
52    The pcregrep program has been enhanced with new functionality such as
53    multiline-matching and options for output more matching context. See the
54    ChangeLog for a complete list of changes to the library and the utility
55    programs.
56    
57    
58  Release 5.0 13-Sep-04  Release 5.0 13-Sep-04
59  ---------------------  ---------------------
60    

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