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revision 881 by ph10, Sun Jan 15 18:07:05 2012 UTC revision 937 by ph10, Sun Feb 26 15:58:56 2012 UTC
# Line 1  Line 1 
1  ChangeLog for PCRE  ChangeLog for PCRE
2  ------------------  ------------------
3    
4  Version 8.30  Version 8.31
5  ------------  -----------------------------
6    
7    1.  Fixing a wrong JIT test case and some compiler warnings.
8    
9    2.  Removed a bashism from the RunTest script.
10    
11    3.  Add a cast to pcre_exec.c to fix the warning "unary minus operator applied
12        to unsigned type, result still unsigned" that was given by an MS compiler
13        on encountering the code "-sizeof(xxx)".
14    
15    4.  Partial matching support is added to the JIT compiler.
16    
17    5.  Fixed several bugs concerned with partial matching of items that consist
18        of more than one character:
19    
20        (a) /^(..)\1/ did not partially match "aba" because checking references was
21            done on an "all or nothing" basis. This also applied to repeated
22            references.
23    
24        (b) \R did not give a hard partial match if \r was found at the end of the
25            subject.
26    
27        (c) \X did not give a hard partial match after matching one or more
28            characters at the end of the subject.
29    
30        (d) When newline was set to CRLF, a pattern such as /a$/ did not recognize
31            a partial match for the string "\r".
32    
33        (e) When newline was set to CRLF, the metacharacter "." did not recognize
34            a partial match for a CR character at the end of the subject string.
35    
36    6.  If JIT is requested using /S++ or -s++ (instead of just /S+ or -s+) when
37        running pcretest, the text "(JIT)" added to the output whenever JIT is
38        actually used to run the match.
39    
40    7.  Individual JIT compile options can be set in pcretest by following -s+[+]
41        or /S+[+] with a digit between 1 and 7.
42    
43    8.  OP_NOT now supports any UTF character not just single-byte ones.
44    
45    9.  (*MARK) control verb is now supported by the JIT compiler.
46    
47    10. The command "./RunTest list" lists the available tests without actually
48        running any of them. (Because I keep forgetting what they all are.)
49    
50    11. Add PCRE_INFO_MAXLOOKBEHIND.
51    
52    12. Applied a (slightly modified) user-supplied patch that improves performance
53        when the heap is used for recursion (compiled with --disable-stack-for-
54        recursion). Instead of malloc and free for each heap frame each time a
55        logical recursion happens, frames are retained on a chain and re-used where
56        possible. This sometimes gives as much as 30% improvement.
57    
58    13. As documented, (*COMMIT) is now confined to within a recursive subpattern
59        call.
60    
61    14. As documented, (*COMMIT) is now confined to within a positive assertion.
62    
63    15. It is now possible to link pcretest with libedit as an alternative to
64        libreadline.
65    
66    
67    Version 8.30 04-February-2012
68    -----------------------------
69    
70  1.  Renamed "isnumber" as "is_a_number" because in some Mac environments this  1.  Renamed "isnumber" as "is_a_number" because in some Mac environments this
71      name is defined in ctype.h.      name is defined in ctype.h.
# Line 32  Version 8.30 Line 95  Version 8.30
95    
96  8.  Ovector size of 2 is also supported by JIT based pcre_exec (the ovector size  8.  Ovector size of 2 is also supported by JIT based pcre_exec (the ovector size
97      rounding is not applied in this particular case).      rounding is not applied in this particular case).
98    
99  9.  The invalid Unicode surrogate codepoints U+D800 to U+DFFF are now rejected  9.  The invalid Unicode surrogate codepoints U+D800 to U+DFFF are now rejected
100      if they appear, or are escaped, in patterns.      if they appear, or are escaped, in patterns.
101    
102  10. Get rid of a number of -Wunused-but-set-variable warnings.  10. Get rid of a number of -Wunused-but-set-variable warnings.
103    
104    11. The pattern /(?=(*:x))(q|)/ matches an empty string, and returns the mark
105        "x". The similar pattern /(?=(*:x))((*:y)q|)/ did not return a mark at all.
106        Oddly, Perl behaves the same way. PCRE has been fixed so that this pattern
107        also returns the mark "x". This bug applied to capturing parentheses,
108        non-capturing parentheses, and atomic parentheses. It also applied to some
109        assertions.
110    
111    12. Stephen Kelly's patch to CMakeLists.txt allows it to parse the version
112        information out of configure.ac instead of relying on pcre.h.generic, which
113        is not stored in the repository.
114    
115    13. Applied Dmitry V. Levin's patch for a more portable method for linking with
116        -lreadline.
117    
118    14. ZH added PCRE_CONFIG_JITTARGET; added its output to pcretest -C.
119    
120    15. Applied Graycode's patch to put the top-level frame on the stack rather
121        than the heap when not using the stack for recursion. This gives a
122        performance improvement in many cases when recursion is not deep.
123    
124    16. Experimental code added to "pcretest -C" to output the stack frame size.
125    
126    
127  Version 8.21 12-Dec-2011  Version 8.21 12-Dec-2011

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