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code/trunk/ChangeLog revision 39 by nigel, Sat Feb 24 21:39:13 2007 UTC code/tags/pcre-3.5/ChangeLog revision 54 by nigel, Sat Feb 24 21:39:44 2007 UTC
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1  ChangeLog for PCRE  ChangeLog for PCRE
2  ------------------  ------------------
4    Version 3.5 15-Aug-01
5    ---------------------
7    1. Added some missing #if !defined NOPOSIX conditionals in pcretest.c that
8    had been forgotten.
10    2. By using declared but undefined structures, we can avoid using "void"
11    definitions in pcre.h while keeping the internal definitions of the structures
12    private.
14    3. The distribution is now built using autoconf 2.50 and libtool 1.4. From a
15    user point of view, this means that both static and shared libraries are built
16    by default, but this can be individually controlled. More of the work of
17    handling this static/shared cases is now inside libtool instead of PCRE's make
18    file.
20    4. The pcretest utility is now installed along with pcregrep because it is
21    useful for users (to test regexs) and by doing this, it automatically gets
22    relinked by libtool. The documentation has been turned into a man page, so
23    there are now .1, .txt, and .html versions in /doc.
25    5. Upgrades to pcregrep:
26       (i)   Added long-form option names like gnu grep.
27       (ii)  Added --help to list all options with an explanatory phrase.
28       (iii) Added -r, --recursive to recurse into sub-directories.
29       (iv)  Added -f, --file to read patterns from a file.
31    6. pcre_exec() was referring to its "code" argument before testing that
32    argument for NULL (and giving an error if it was NULL).
34    7. Upgraded Makefile.in to allow for compiling in a different directory from
35    the source directory.
37    8. Tiny buglet in pcretest: when pcre_fullinfo() was called to retrieve the
38    options bits, the pointer it was passed was to an int instead of to an unsigned
39    long int. This mattered only on 64-bit systems.
41    9. Fixed typo (3.4/1) in pcre.h again. Sigh. I had changed pcre.h (which is
42    generated) instead of pcre.in, which it its source. Also made the same change
43    in several of the .c files.
45    10. A new release of gcc defines printf() as a macro, which broke pcretest
46    because it had an ifdef in the middle of a string argument for printf(). Fixed
47    by using separate calls to printf().
49    11. Added --enable-newline-is-cr and --enable-newline-is-lf to the configure
50    script, to force use of CR or LF instead of \n in the source. On non-Unix
51    systems, the value can be set in config.h.
53    12. The limit of 200 on non-capturing parentheses is a _nesting_ limit, not an
54    absolute limit. Changed the text of the error message to make this clear, and
55    likewise updated the man page.
57    13. The limit of 99 on the number of capturing subpatterns has been removed.
58    The new limit is 65535, which I hope will not be a "real" limit.
61    Version 3.4 22-Aug-00
62    ---------------------
64    1. Fixed typo in pcre.h: unsigned const char * changed to const unsigned char *.
66    2. Diagnose condition (?(0) as an error instead of crashing on matching.
69    Version 3.3 01-Aug-00
70    ---------------------
72    1. If an octal character was given, but the value was greater than \377, it
73    was not getting masked to the least significant bits, as documented. This could
74    lead to crashes in some systems.
76    2. Perl 5.6 (if not earlier versions) accepts classes like [a-\d] and treats
77    the hyphen as a literal. PCRE used to give an error; it now behaves like Perl.
79    3. Added the functions pcre_free_substring() and pcre_free_substring_list().
80    These just pass their arguments on to (pcre_free)(), but they are provided
81    because some uses of PCRE bind it to non-C systems that can call its functions,
82    but cannot call free() or pcre_free() directly.
84    4. Add "make test" as a synonym for "make check". Corrected some comments in
85    the Makefile.
87    5. Add $(DESTDIR)/ in front of all the paths in the "install" target in the
88    Makefile.
90    6. Changed the name of pgrep to pcregrep, because Solaris has introduced a
91    command called pgrep for grepping around the active processes.
93    7. Added the beginnings of support for UTF-8 character strings.
95    8. Arranged for the Makefile to pass over the settings of CC, CFLAGS, and
96    RANLIB to ./ltconfig so that they are used by libtool. I think these are all
97    the relevant ones. (AR is not passed because ./ltconfig does its own figuring
98    out for the ar command.)
101    Version 3.2 12-May-00
102    ---------------------
104    This is purely a bug fixing release.
106    1. If the pattern /((Z)+|A)*/ was matched agained ZABCDEFG it matched Z instead
107    of ZA. This was just one example of several cases that could provoke this bug,
108    which was introduced by change 9 of version 2.00. The code for breaking
109    infinite loops after an iteration that matches an empty string was't working
110    correctly.
112    2. The pcretest program was not imitating Perl correctly for the pattern /a*/g
113    when matched against abbab (for example). After matching an empty string, it
114    wasn't forcing anchoring when setting PCRE_NOTEMPTY for the next attempt; this
115    caused it to match further down the string than it should.
117    3. The code contained an inclusion of sys/types.h. It isn't clear why this
118    was there because it doesn't seem to be needed, and it causes trouble on some
119    systems, as it is not a Standard C header. It has been removed.
121    4. Made 4 silly changes to the source to avoid stupid compiler warnings that
122    were reported on the Macintosh. The changes were from
124      while ((c = *(++ptr)) != 0 && c != '\n');
125    to
126      while ((c = *(++ptr)) != 0 && c != '\n') ;
128    Totally extraordinary, but if that's what it takes...
130    5. PCRE is being used in one environment where neither memmove() nor bcopy() is
131    available. Added HAVE_BCOPY and an autoconf test for it; if neither
132    HAVE_MEMMOVE nor HAVE_BCOPY is set, use a built-in emulation function which
133    assumes the way PCRE uses memmove() (always moving upwards).
135    6. PCRE is being used in one environment where strchr() is not available. There
136    was only one use in pcre.c, and writing it out to avoid strchr() probably gives
137    faster code anyway.
140    Version 3.1 09-Feb-00
141    ---------------------
143    The only change in this release is the fixing of some bugs in Makefile.in for
144    the "install" target:
146    (1) It was failing to install pcreposix.h.
148    (2) It was overwriting the pcre.3 man page with the pcreposix.3 man page.
151    Version 3.0 01-Feb-00
152    ---------------------
154    1. Add support for the /+ modifier to perltest (to output $` like it does in
155    pcretest).
157    2. Add support for the /g modifier to perltest.
159    3. Fix pcretest so that it behaves even more like Perl for /g when the pattern
160    matches null strings.
162    4. Fix perltest so that it doesn't do unwanted things when fed an empty
163    pattern. Perl treats empty patterns specially - it reuses the most recent
164    pattern, which is not what we want. Replace // by /(?#)/ in order to avoid this
165    effect.
167    5. The POSIX interface was broken in that it was just handing over the POSIX
168    captured string vector to pcre_exec(), but (since release 2.00) PCRE has
169    required a bigger vector, with some working space on the end. This means that
170    the POSIX wrapper now has to get and free some memory, and copy the results.
172    6. Added some simple autoconf support, placing the test data and the
173    documentation in separate directories, re-organizing some of the
174    information files, and making it build pcre-config (a GNU standard). Also added
175    libtool support for building PCRE as a shared library, which is now the
176    default.
178    7. Got rid of the leading zero in the definition of PCRE_MINOR because 08 and
179    09 are not valid octal constants. Single digits will be used for minor values
180    less than 10.
182    8. Defined REG_EXTENDED and REG_NOSUB as zero in the POSIX header, so that
183    existing programs that set these in the POSIX interface can use PCRE without
184    modification.
186    9. Added a new function, pcre_fullinfo() with an extensible interface. It can
187    return all that pcre_info() returns, plus additional data. The pcre_info()
188    function is retained for compatibility, but is considered to be obsolete.
190    10. Added experimental recursion feature (?R) to handle one common case that
191    Perl 5.6 will be able to do with (?p{...}).
193    11. Added support for POSIX character classes like [:alpha:], which Perl is
194    adopting.
197  Version 2.08 31-Aug-99  Version 2.08 31-Aug-99
198  ----------------------  ----------------------

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