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revision 289 by ph10, Sun Dec 23 12:17:20 2007 UTC revision 331 by ph10, Sat Apr 5 15:38:53 2008 UTC
# Line 1  Line 1 
1  ChangeLog for PCRE  ChangeLog for PCRE
2  ------------------  ------------------
3    
4  Version 7.5 23-Dec-07  Version 7.7 05-Mar-08
5    ---------------------
6    
7    1.  Applied Craig's patch to sort out a long long problem: "If we can't convert
8        a string to a long long, pretend we don't even have a long long." This is
9        done by checking for the strtoq, strtoll, and _strtoi64 functions.
10    
11    2.  Applied Craig's patch to pcrecpp.cc to restore ABI compatibility with
12        pre-7.6 versions, which defined a global no_arg variable instead of putting
13        it in the RE class.
14    
15    3.  Remove a line of dead code, identified by coverity and reported by Nuno
16        Lopes.
17    
18    4.  Fixed two related pcregrep bugs involving -r with --include or --exclude:
19    
20        (1) The include/exclude patterns were being applied to the whole pathnames
21            of files, instead of just to the final components.
22    
23        (2) If there was more than one level of directory, the subdirectories were
24            skipped unless they satisfied the include/exclude conditions. This is
25            inconsistent with GNU grep (and could even be seen as contrary to the
26            pcregrep specification - which I improved to make it absolutely clear).
27            The action now is always to scan all levels of directory, and just
28            apply the include/exclude patterns to regular files.
29    
30    5.  Added the --include_dir and --exclude_dir patterns to pcregrep, and used
31        --exclude_dir in the tests to avoid scanning .svn directories.
32    
33    6.  Applied Craig's patch to the QuoteMeta function so that it escapes the
34        NUL character as backslash + 0 rather than backslash + NUL, because PCRE
35        doesn't support NULs in patterns.
36    
37    7.  Added some missing "const"s to declarations of static tables in
38        pcre_compile.c and pcre_dfa_exec.c.
39    
40    8.  Applied Craig's patch to pcrecpp.cc to fix a problem in OS X that was
41        caused by fix #2  above. (Subsequently also a second patch to fix the
42        first patch. And a third patch - this was a messy problem.)
43    
44    9.  Applied Craig's patch to remove the use of push_back().
45    
46    
47    Version 7.6 28-Jan-08
48    ---------------------
49    
50    1.  A character class containing a very large number of characters with
51        codepoints greater than 255 (in UTF-8 mode, of course) caused a buffer
52        overflow.
53    
54    2.  Patch to cut out the "long long" test in pcrecpp_unittest when
55        HAVE_LONG_LONG is not defined.
56    
57    3.  Applied Christian Ehrlicher's patch to update the CMake build files to
58        bring them up to date and include new features. This patch includes:
59    
60        - Fixed PH's badly added libz and libbz2 support.
61        - Fixed a problem with static linking.
62        - Added pcredemo. [But later removed - see 7 below.]
63        - Fixed dftables problem and added an option.
64        - Added a number of HAVE_XXX tests, including HAVE_WINDOWS_H and
65            HAVE_LONG_LONG.
66        - Added readline support for pcretest.
67        - Added an listing of the option settings after cmake has run.
68    
69    4.  A user submitted a patch to Makefile that makes it easy to create
70        "pcre.dll" under mingw when using Configure/Make. I added stuff to
71        Makefile.am that cause it to include this special target, without
72        affecting anything else. Note that the same mingw target plus all
73        the other distribution libraries and programs are now supported
74        when configuring with CMake (see 6 below) instead of with
75        Configure/Make.
76    
77    5.  Applied Craig's patch that moves no_arg into the RE class in the C++ code.
78        This is an attempt to solve the reported problem "pcrecpp::no_arg is not
79        exported in the Windows port". It has not yet been confirmed that the patch
80        solves the problem, but it does no harm.
81    
82    6.  Applied Sheri's patch to CMakeLists.txt to add NON_STANDARD_LIB_PREFIX and
83        NON_STANDARD_LIB_SUFFIX for dll names built with mingw when configured
84        with CMake, and also correct the comment about stack recursion.
85    
86    7.  Remove the automatic building of pcredemo from the ./configure system and
87        from CMakeLists.txt. The whole idea of pcredemo.c is that it is an example
88        of a program that users should build themselves after PCRE is installed, so
89        building it automatically is not really right. What is more, it gave
90        trouble in some build environments.
91    
92    8.  Further tidies to CMakeLists.txt from Sheri and Christian.
93    
94    
95    Version 7.5 10-Jan-08
96  ---------------------  ---------------------
97    
98  1.  Applied a patch from Craig: "This patch makes it possible to 'ignore'  1.  Applied a patch from Craig: "This patch makes it possible to 'ignore'
# Line 99  Version 7.5 23-Dec-07 Line 190  Version 7.5 23-Dec-07
190    
191  20. In pcrecpp.cc, the variable 'count' was incremented twice in  20. In pcrecpp.cc, the variable 'count' was incremented twice in
192      RE::GlobalReplace(). As a result, the number of replacements returned was      RE::GlobalReplace(). As a result, the number of replacements returned was
193      double what it should be. I have removed one of the increments.      double what it should be. I removed one of the increments, but Craig sent a
194        later patch that removed the other one (the right fix) and added unit tests
195        that check the return values (which was not done before).
196    
197    21. Several CMake things:
198    
199        (1) Arranged that, when cmake is used on Unix, the libraries end up with
200            the names libpcre and libpcreposix, not just pcre and pcreposix.
201    
202        (2) The above change means that pcretest and pcregrep are now correctly
203            linked with the newly-built libraries, not previously installed ones.
204    
205        (3) Added PCRE_SUPPORT_LIBREADLINE, PCRE_SUPPORT_LIBZ, PCRE_SUPPORT_LIBBZ2.
206    
207    22. In UTF-8 mode, with newline set to "any", a pattern such as .*a.*=.b.*
208        crashed when matching a string such as a\x{2029}b (note that \x{2029} is a
209        UTF-8 newline character). The key issue is that the pattern starts .*;
210        this means that the match must be either at the beginning, or after a
211        newline. The bug was in the code for advancing after a failed match and
212        checking that the new position followed a newline. It was not taking
213        account of UTF-8 characters correctly.
214    
215    23. PCRE was behaving differently from Perl in the way it recognized POSIX
216        character classes. PCRE was not treating the sequence [:...:] as a
217        character class unless the ... were all letters. Perl, however, seems to
218        allow any characters between [: and :], though of course it rejects as
219        unknown any "names" that contain non-letters, because all the known class
220        names consist only of letters. Thus, Perl gives an error for [[:1234:]],
221        for example, whereas PCRE did not - it did not recognize a POSIX character
222        class. This seemed a bit dangerous, so the code has been changed to be
223        closer to Perl. The behaviour is not identical to Perl, because PCRE will
224        diagnose an unknown class for, for example, [[:l\ower:]] where Perl will
225        treat it as [[:lower:]]. However, PCRE does now give "unknown" errors where
226        Perl does, and where it didn't before.
227    
228    24. Rewrite so as to remove the single use of %n from pcregrep because in some
229        Windows environments %n is disabled by default.
230    
231    
232  Version 7.4 21-Sep-07  Version 7.4 21-Sep-07

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