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revision 1335 by ph10, Tue May 28 09:13:59 2013 UTC revision 1404 by ph10, Tue Nov 19 15:36:57 2013 UTC
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1  News about PCRE releases  News about PCRE releases
2  ------------------------  ------------------------
3    
4    Release 8.34 19-November-2013
5    -----------------------------
6    
7    As well as fixing the inevitable bugs, performance has been improved by
8    refactoring and extending the amount of "auto-possessification" that PCRE does.
9    Other notable changes:
10    
11    .  Implemented PCRE_INFO_MATCH_EMPTY, which yields 1 if the pattern can match
12       an empty string. If it can, pcretest shows this in its information output.
13    
14    .  A back reference to a named subpattern when there is more than one of the
15       same name now checks them in the order in which they appear in the pattern.
16       The first one that is set is used for the reference. Previously only the
17       first one was inspected. This change makes PCRE more compatible with Perl.
18    
19    .  Unicode character properties were updated from Unicode 6.3.0.
20    
21    .  The character VT has been added to the set of characters that match \s and
22       are generally treated as white space, following this same change in Perl
23       5.18. There is now no difference between "Perl space" and "POSIX space".
24    
25    .  Perl has changed its handling of \8 and \9. If there is no previously
26       encountered capturing group of those numbers, they are treated as the
27       literal characters 8 and 9 instead of a binary zero followed by the
28       literals. PCRE now does the same.
29    
30    .  Following Perl, added \o{} to specify codepoints in octal, making it
31       possible to specify values greater than 0777 and also making them
32       unambiguous.
33    
34    .  In UCP mode, \s was not matching two of the characters that Perl matches,
35       namely NEL (U+0085) and MONGOLIAN VOWEL SEPARATOR (U+180E), though they
36       were matched by \h.
37    
38    .  Add JIT support for the 64 bit TileGX architecture.
39    
40    .  Upgraded the handling of the POSIX classes [:graph:], [:print:], and
41       [:punct:] when PCRE_UCP is set so as to include the same characters as Perl
42       does in Unicode mode.
43    
44    .  Perl no longer allows group names to start with digits, so I have made this
45       change also in PCRE.
46    
47    
48  Release 8.33 28-May-2013  Release 8.33 28-May-2013
49  --------------------------  --------------------------
50    

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