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revision 93 by nigel, Sat Feb 24 21:41:42 2007 UTC revision 178 by ph10, Wed Jun 13 08:44:34 2007 UTC
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1  News about PCRE releases  News about PCRE releases
2  ------------------------  ------------------------
3    
4  Release 7.0 23-Nov-06  
5    Release 7.2 30-Apr-07
6    ---------------------
7    
8    WARNING: saved patterns that were compiled by earlier versions of PCRE must be
9    recompiled for use with 7.2 (necessitated by the addition of \K).
10    
11    Correction to the notes for 7.1: the note about shared libraries for Windows is
12    wrong. Previously, three libraries were built, but each could function
13    independently. For example, the pcreposix library also included all the
14    functions from the basic pcre library. The change is that the three libraries
15    are no longer independent. They are like the Unix libraries. To use the
16    pcreposix functions, for example, you need to link with both the pcreposix and
17    the basic pcre library.
18    
19    Some more features from Perl 5.10 have been added:
20    
21      (?-n) and (?+n) relative references for recursion and subroutines.
22    
23      (Not sure if this one is actually in Perl 5.10)
24      (?(-n) and (?(+n) relative references as conditions.
25    
26      \K to reset the start of the matched string; for example, (foo)\Kbar
27      matches bar preceded by foo, but only sets bar as the matched string.
28    
29      (?| introduces a group where the capturing parentheses in each alternative
30      start from the same number; for example, (?|(abc)|(xyz)) sets capturing
31      parentheses number 1 in both cases.
32    
33      \h, \H, \v, \V match horizontal and vertical whitespace, respectively.
34    
35    
36    Release 7.1 24-Apr-07
37    ---------------------
38    
39    There is only one new feature in this release: a linebreak setting of
40    PCRE_NEWLINE_ANYCRLF. It is a cut-down version of PCRE_NEWLINE_ANY, which
41    recognizes only CRLF, CR, and LF as linebreaks.
42    
43    A few bugs are fixed (see ChangeLog for details), but the major change is a
44    complete re-implementation of the build system. This now has full Autotools
45    support and so is now "standard" in some sense. It should help with compiling
46    PCRE in a wide variety of environments.
47    
48    NOTE: when building shared libraries for Windows, three dlls are now built,
49    called libpcre, libpcreposix, and libpcrecpp. Previously, everything was
50    included in a single dll.
51    
52    Another important change is that the dftables auxiliary program is no longer
53    compiled and run at "make" time by default. Instead, a default set of character
54    tables (assuming ASCII coding) is used. If you want to use dftables to generate
55    the character tables as previously, add --enable-rebuild-chartables to the
56    "configure" command. You must do this if you are compiling PCRE to run on a
57    system that uses EBCDIC code.
58    
59    There is a discussion about character tables in the README file. The default is
60    not to use dftables so that that there is no problem when cross-compiling.
61    
62    
63    Release 7.0 19-Dec-06
64  ---------------------  ---------------------
65    
66  This release has a new major number because there have been some internal  This release has a new major number because there have been some internal

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