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revision 793 by ph10, Wed Dec 7 16:52:34 2011 UTC revision 909 by ph10, Sat Feb 4 15:01:47 2012 UTC
# Line 1  Line 1 
1  ChangeLog for PCRE  ChangeLog for PCRE
2  ------------------  ------------------
3    
4  Version 8.21 05-Dec-2011  Version 8.30 04-February-2012
5    -----------------------------
6    
7    1.  Renamed "isnumber" as "is_a_number" because in some Mac environments this
8        name is defined in ctype.h.
9    
10    2.  Fixed a bug in fixed-length calculation for lookbehinds that would show up
11        only in quite long subpatterns.
12    
13    3.  Removed the function pcre_info(), which has been obsolete and deprecated
14        since it was replaced by pcre_fullinfo() in February 2000.
15    
16    4.  For a non-anchored pattern, if (*SKIP) was given with a name that did not
17        match a (*MARK), and the match failed at the start of the subject, a
18        reference to memory before the start of the subject could occur. This bug
19        was introduced by fix 17 of release 8.21.
20    
21    5.  A reference to an unset group with zero minimum repetition was giving
22        totally wrong answers (in non-JavaScript-compatibility mode). For example,
23        /(another)?(\1?)test/ matched against "hello world test". This bug was
24        introduced in release 8.13.
25    
26    6.  Add support for 16-bit character strings (a large amount of work involving
27        many changes and refactorings).
28    
29    7.  RunGrepTest failed on msys because \r\n was replaced by whitespace when the
30        command "pattern=`printf 'xxx\r\njkl'`" was run. The pattern is now taken
31        from a file.
32    
33    8.  Ovector size of 2 is also supported by JIT based pcre_exec (the ovector size
34        rounding is not applied in this particular case).
35    
36    9.  The invalid Unicode surrogate codepoints U+D800 to U+DFFF are now rejected
37        if they appear, or are escaped, in patterns.
38    
39    10. Get rid of a number of -Wunused-but-set-variable warnings.
40    
41    11. The pattern /(?=(*:x))(q|)/ matches an empty string, and returns the mark
42        "x". The similar pattern /(?=(*:x))((*:y)q|)/ did not return a mark at all.
43        Oddly, Perl behaves the same way. PCRE has been fixed so that this pattern
44        also returns the mark "x". This bug applied to capturing parentheses,
45        non-capturing parentheses, and atomic parentheses. It also applied to some
46        assertions.
47    
48    12. Stephen Kelly's patch to CMakeLists.txt allows it to parse the version
49        information out of configure.ac instead of relying on pcre.h.generic, which
50        is not stored in the repository.
51    
52    13. Applied Dmitry V. Levin's patch for a more portable method for linking with
53        -lreadline.
54    
55    14. ZH added PCRE_CONFIG_JITTARGET; added its output to pcretest -C.
56    
57    15. Applied Graycode's patch to put the top-level frame on the stack rather
58        than the heap when not using the stack for recursion. This gives a
59        performance improvement in many cases when recursion is not deep.
60    
61    16. Experimental code added to "pcretest -C" to output the stack frame size.
62    
63    
64    Version 8.21 12-Dec-2011
65  ------------------------  ------------------------
66    
67  1.  Updating the JIT compiler.  1.  Updating the JIT compiler.
# Line 103  Version 8.21 05-Dec-2011 Line 163  Version 8.21 05-Dec-2011
163  25. The CheckMan script was not being included in the distribution. Also, added  25. The CheckMan script was not being included in the distribution. Also, added
164      an explicit "perl" to run Perl scripts from the PrepareRelease script      an explicit "perl" to run Perl scripts from the PrepareRelease script
165      because this is reportedly needed in Windows.      because this is reportedly needed in Windows.
166    
167  26. If study data was being save in a file and studying had not found a set of  26. If study data was being save in a file and studying had not found a set of
168      "starts with" bytes for the pattern, the data written to the file (though      "starts with" bytes for the pattern, the data written to the file (though
169      never used) was taken from uninitialized memory and so caused valgrind to      never used) was taken from uninitialized memory and so caused valgrind to
170      complain.      complain.
171    
172  27. Updated RunTest.bat as provided by Sheri Pierce.  27. Updated RunTest.bat as provided by Sheri Pierce.
173    
174  28. Fixed a possible uninitialized memory bug in pcre_jit_compile.c.  28. Fixed a possible uninitialized memory bug in pcre_jit_compile.c.
175    

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