/[pcre]/code/trunk/NEWS
ViewVC logotype

Diff of /code/trunk/NEWS

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 172 by ph10, Tue Jun 5 10:40:13 2007 UTC revision 228 by ph10, Tue Aug 28 13:37:37 2007 UTC
# Line 2  News about PCRE releases Line 2  News about PCRE releases
2  ------------------------  ------------------------
3    
4    
5  Release 7.2 30-Apr-07  Release 7.3 28-Aug-07
6    ---------------------
7    
8    Most changes are bug fixes. Some that are not:
9    
10    1. There is some support for Perl 5.10's experimental "backtracking control
11       verbs" such as (*PRUNE).
12    
13    2. UTF-8 checking is now as per RFC 3629 instead of RFC 2279; this is more
14       restrictive in the strings it accepts.
15    
16    3. Checking for potential integer overflow has been made more dynamic, and as a
17       consequence there is no longer a hard limit on the size of a subpattern that
18       has a limited repeat count.
19    
20    4. When CRLF is a valid line-ending sequence, pcre_exec() and pcre_dfa_exec()
21       no longer advance by two characters instead of one when an unanchored match
22       fails at CRLF if there are explicit CR or LF matches within the pattern.
23       This gets rid of some anomalous effects that previously occurred.
24    
25    5. Some PCRE-specific settings for varying the newline options at the start of
26       a pattern have been added.
27    
28    
29    Release 7.2 19-Jun-07
30  ---------------------  ---------------------
31    
32  WARNING: saved patterns that were compiled by earlier versions of PCRE must be  WARNING: saved patterns that were compiled by earlier versions of PCRE must be
33  recompiled for use with 7.2 (necessitated by the addition of \K).  recompiled for use with 7.2 (necessitated by the addition of \K, \h, \H, \v,
34    and \V).
35    
36  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
37  wrong. Previously, three libraries were built, but each could function  wrong. Previously, three libraries were built, but each could function
# Line 20  Some more features from Perl 5.10 have b Line 45  Some more features from Perl 5.10 have b
45    
46    (?-n) and (?+n) relative references for recursion and subroutines.    (?-n) and (?+n) relative references for recursion and subroutines.
47    
   (Not sure if this one is actually in Perl 5.10)  
48    (?(-n) and (?(+n) relative references as conditions.    (?(-n) and (?(+n) relative references as conditions.
49    
50      \k{name} and \g{name} are synonyms for \k<name>.
51    
52    \K to reset the start of the matched string; for example, (foo)\Kbar    \K to reset the start of the matched string; for example, (foo)\Kbar
53    matches bar preceded by foo, but only sets bar as the matched string    matches bar preceded by foo, but only sets bar as the matched string.
54    
55      (?| introduces a group where the capturing parentheses in each alternative
56      start from the same number; for example, (?|(abc)|(xyz)) sets capturing
57      parentheses number 1 in both cases.
58    
59      \h, \H, \v, \V match horizontal and vertical whitespace, respectively.
60    
61    
62  Release 7.1 24-Apr-07  Release 7.1 24-Apr-07

Legend:
Removed from v.172  
changed lines
  Added in v.228

webmaster@exim.org
ViewVC Help
Powered by ViewVC 1.1.12