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revision 538 by ph10, Wed Jun 9 19:30:57 2010 UTC revision 552 by ph10, Wed Oct 13 10:15:41 2010 UTC
# Line 1  Line 1 
1  ChangeLog for PCRE  ChangeLog for PCRE
2  ------------------  ------------------
3    
4  Version 8.10 03-Jun-2010  Version 8.11 10-Oct-2010
5    ------------------------
6    
7    1.  (*THEN) was not working properly if there were untried alternatives prior
8        to it in the current branch. For example, in ((a|b)(*THEN)(*F)|c..) it
9        backtracked to try for "b" instead of moving to the next alternative branch
10        at the same level (in this case, to look for "c"). The Perl documentation
11        is clear that when (*THEN) is backtracked onto, it goes to the "next
12        alternative in the innermost enclosing group".
13    
14    2.  (*COMMIT) was not overriding (*THEN), as it does in Perl. In a pattern
15        such as   (A(*COMMIT)B(*THEN)C|D)  any failure after matching A should
16        result in overall failure. Similarly, (*COMMIT) now overrides (*PRUNE) and
17        (*SKIP), (*SKIP) overrides (*PRUNE) and (*THEN), and (*PRUNE) overrides
18        (*THEN).
19    
20    3.  If \s appeared in a character class, it removed the VT character from
21        the class, even if it had been included by some previous item, for example
22        in [\x00-\xff\s]. (This was a bug related to the fact that VT is not part
23        of \s, but is part of the POSIX "space" class.)
24    
25    
26    Version 8.10 25-Jun-2010
27  ------------------------  ------------------------
28    
29  1.  Added support for (*MARK:ARG) and for ARG additions to PRUNE, SKIP, and  1.  Added support for (*MARK:ARG) and for ARG additions to PRUNE, SKIP, and
# Line 42  Version 8.10 03-Jun-2010 Line 64  Version 8.10 03-Jun-2010
64  11. In UTF-8 mode, if a pattern that was compiled with PCRE_CASELESS was  11. In UTF-8 mode, if a pattern that was compiled with PCRE_CASELESS was
65      studied, and the match started with a letter with a code point greater than      studied, and the match started with a letter with a code point greater than
66      127 whose first byte was different to the first byte of the other case of      127 whose first byte was different to the first byte of the other case of
67      the letter, the other case of this starting letter was not recognized      the letter, the other case of this starting letter was not recognized
68      (#976).      (#976).
69    
70  12. If a pattern that was studied started with a repeated Unicode property  12. If a pattern that was studied started with a repeated Unicode property
# Line 68  Version 8.10 03-Jun-2010 Line 90  Version 8.10 03-Jun-2010
90    
91  17. Added a check for running out of memory when PCRE is compiled with  17. Added a check for running out of memory when PCRE is compiled with
92      --disable-stack-for-recursion (#990).      --disable-stack-for-recursion (#990).
93    
94  18. If the last data line in a file for pcretest does not have a newline on  18. If the last data line in a file for pcretest does not have a newline on
95      the end, a newline was missing in the output.      the end, a newline was missing in the output.
96    
97  19. The default pcre_chartables.c file recognizes only ASCII characters (values  19. The default pcre_chartables.c file recognizes only ASCII characters (values
98      less than 128) in its various bitmaps. However, there is a facility for      less than 128) in its various bitmaps. However, there is a facility for
99      generating tables according to the current locale when PCRE is compiled. It      generating tables according to the current locale when PCRE is compiled. It
100      turns out that in some environments, 0x85 and 0xa0, which are Unicode space      turns out that in some environments, 0x85 and 0xa0, which are Unicode space
101      characters, are recognized by isspace() and therefore were getting set in      characters, are recognized by isspace() and therefore were getting set in
102      these tables. This caused a problem in UTF-8 mode when pcre_study() was      these tables, and indeed these tables seem to approximate to ISO 8859. This
103      used to create a list of bytes that can start a match. For \s, it was      caused a problem in UTF-8 mode when pcre_study() was used to create a list
104      including 0x85 and 0xa0, which of course cannot start UTF-8 characters. I      of bytes that can start a match. For \s, it was including 0x85 and 0xa0,
105      have changed the code so that only real ASCII characters (less than 128)      which of course cannot start UTF-8 characters. I have changed the code so
106      are set in this case because the \s etc escapes are documented as      that only real ASCII characters (less than 128) and the correct starting
107      recognizing only ASCII characters. (When PCRE_UCP is set - see 9 above -      bytes for UTF-8 encodings are set for characters greater than 127 when in
108      the code is different altogether.)      UTF-8 mode. (When PCRE_UCP is set - see 9 above - the code is different
109        altogether.)
110    
111    20. Added the /T option to pcretest so as to be able to run tests with non-
112        standard character tables, thus making it possible to include the tests
113        used for 19 above in the standard set of tests.
114    
115    21. A pattern such as (?&t)(?#()(?(DEFINE)(?<t>a)) which has a forward
116        reference to a subpattern the other side of a comment that contains an
117        opening parenthesis caused either an internal compiling error, or a
118        reference to the wrong subpattern.
119    
120    
121  Version 8.02 19-Mar-2010  Version 8.02 19-Mar-2010

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