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1  ChangeLog for PCRE  ChangeLog for PCRE
2  ------------------  ------------------
4    Version 3.7 29-Oct-01
5    ---------------------
7    1. In updating pcretest to check change 1 of version 3.6, I screwed up.
8    This caused pcretest, when used on the test data, to segfault. Unfortunately,
9    this didn't happen under Solaris 8, where I normally test things.
12    Version 3.6 23-Oct-01
13    ---------------------
15    1. Crashed with /(sens|respons)e and \1ibility/ and "sense and sensibility" if
16    offsets passed as NULL with zero offset count.
18    2. The config.guess and config.sub files had not been updated when I moved to
19    the latest autoconf.
22    Version 3.5 15-Aug-01
23    ---------------------
25    1. Added some missing #if !defined NOPOSIX conditionals in pcretest.c that
26    had been forgotten.
28    2. By using declared but undefined structures, we can avoid using "void"
29    definitions in pcre.h while keeping the internal definitions of the structures
30    private.
32    3. The distribution is now built using autoconf 2.50 and libtool 1.4. From a
33    user point of view, this means that both static and shared libraries are built
34    by default, but this can be individually controlled. More of the work of
35    handling this static/shared cases is now inside libtool instead of PCRE's make
36    file.
38    4. The pcretest utility is now installed along with pcregrep because it is
39    useful for users (to test regexs) and by doing this, it automatically gets
40    relinked by libtool. The documentation has been turned into a man page, so
41    there are now .1, .txt, and .html versions in /doc.
43    5. Upgrades to pcregrep:
44       (i)   Added long-form option names like gnu grep.
45       (ii)  Added --help to list all options with an explanatory phrase.
46       (iii) Added -r, --recursive to recurse into sub-directories.
47       (iv)  Added -f, --file to read patterns from a file.
49    6. pcre_exec() was referring to its "code" argument before testing that
50    argument for NULL (and giving an error if it was NULL).
52    7. Upgraded Makefile.in to allow for compiling in a different directory from
53    the source directory.
55    8. Tiny buglet in pcretest: when pcre_fullinfo() was called to retrieve the
56    options bits, the pointer it was passed was to an int instead of to an unsigned
57    long int. This mattered only on 64-bit systems.
59    9. Fixed typo (3.4/1) in pcre.h again. Sigh. I had changed pcre.h (which is
60    generated) instead of pcre.in, which it its source. Also made the same change
61    in several of the .c files.
63    10. A new release of gcc defines printf() as a macro, which broke pcretest
64    because it had an ifdef in the middle of a string argument for printf(). Fixed
65    by using separate calls to printf().
67    11. Added --enable-newline-is-cr and --enable-newline-is-lf to the configure
68    script, to force use of CR or LF instead of \n in the source. On non-Unix
69    systems, the value can be set in config.h.
71    12. The limit of 200 on non-capturing parentheses is a _nesting_ limit, not an
72    absolute limit. Changed the text of the error message to make this clear, and
73    likewise updated the man page.
75    13. The limit of 99 on the number of capturing subpatterns has been removed.
76    The new limit is 65535, which I hope will not be a "real" limit.
79    Version 3.4 22-Aug-00
80    ---------------------
82    1. Fixed typo in pcre.h: unsigned const char * changed to const unsigned char *.
84    2. Diagnose condition (?(0) as an error instead of crashing on matching.
87    Version 3.3 01-Aug-00
88    ---------------------
90    1. If an octal character was given, but the value was greater than \377, it
91    was not getting masked to the least significant bits, as documented. This could
92    lead to crashes in some systems.
94    2. Perl 5.6 (if not earlier versions) accepts classes like [a-\d] and treats
95    the hyphen as a literal. PCRE used to give an error; it now behaves like Perl.
97    3. Added the functions pcre_free_substring() and pcre_free_substring_list().
98    These just pass their arguments on to (pcre_free)(), but they are provided
99    because some uses of PCRE bind it to non-C systems that can call its functions,
100    but cannot call free() or pcre_free() directly.
102    4. Add "make test" as a synonym for "make check". Corrected some comments in
103    the Makefile.
105    5. Add $(DESTDIR)/ in front of all the paths in the "install" target in the
106    Makefile.
108    6. Changed the name of pgrep to pcregrep, because Solaris has introduced a
109    command called pgrep for grepping around the active processes.
111    7. Added the beginnings of support for UTF-8 character strings.
113    8. Arranged for the Makefile to pass over the settings of CC, CFLAGS, and
114    RANLIB to ./ltconfig so that they are used by libtool. I think these are all
115    the relevant ones. (AR is not passed because ./ltconfig does its own figuring
116    out for the ar command.)
119    Version 3.2 12-May-00
120    ---------------------
122    This is purely a bug fixing release.
124    1. If the pattern /((Z)+|A)*/ was matched agained ZABCDEFG it matched Z instead
125    of ZA. This was just one example of several cases that could provoke this bug,
126    which was introduced by change 9 of version 2.00. The code for breaking
127    infinite loops after an iteration that matches an empty string was't working
128    correctly.
130    2. The pcretest program was not imitating Perl correctly for the pattern /a*/g
131    when matched against abbab (for example). After matching an empty string, it
132    wasn't forcing anchoring when setting PCRE_NOTEMPTY for the next attempt; this
133    caused it to match further down the string than it should.
135    3. The code contained an inclusion of sys/types.h. It isn't clear why this
136    was there because it doesn't seem to be needed, and it causes trouble on some
137    systems, as it is not a Standard C header. It has been removed.
139    4. Made 4 silly changes to the source to avoid stupid compiler warnings that
140    were reported on the Macintosh. The changes were from
142      while ((c = *(++ptr)) != 0 && c != '\n');
143    to
144      while ((c = *(++ptr)) != 0 && c != '\n') ;
146    Totally extraordinary, but if that's what it takes...
148    5. PCRE is being used in one environment where neither memmove() nor bcopy() is
149    available. Added HAVE_BCOPY and an autoconf test for it; if neither
150    HAVE_MEMMOVE nor HAVE_BCOPY is set, use a built-in emulation function which
151    assumes the way PCRE uses memmove() (always moving upwards).
153    6. PCRE is being used in one environment where strchr() is not available. There
154    was only one use in pcre.c, and writing it out to avoid strchr() probably gives
155    faster code anyway.
158    Version 3.1 09-Feb-00
159    ---------------------
161    The only change in this release is the fixing of some bugs in Makefile.in for
162    the "install" target:
164    (1) It was failing to install pcreposix.h.
166    (2) It was overwriting the pcre.3 man page with the pcreposix.3 man page.
169    Version 3.0 01-Feb-00
170    ---------------------
172    1. Add support for the /+ modifier to perltest (to output $` like it does in
173    pcretest).
175    2. Add support for the /g modifier to perltest.
177    3. Fix pcretest so that it behaves even more like Perl for /g when the pattern
178    matches null strings.
180    4. Fix perltest so that it doesn't do unwanted things when fed an empty
181    pattern. Perl treats empty patterns specially - it reuses the most recent
182    pattern, which is not what we want. Replace // by /(?#)/ in order to avoid this
183    effect.
185    5. The POSIX interface was broken in that it was just handing over the POSIX
186    captured string vector to pcre_exec(), but (since release 2.00) PCRE has
187    required a bigger vector, with some working space on the end. This means that
188    the POSIX wrapper now has to get and free some memory, and copy the results.
190    6. Added some simple autoconf support, placing the test data and the
191    documentation in separate directories, re-organizing some of the
192    information files, and making it build pcre-config (a GNU standard). Also added
193    libtool support for building PCRE as a shared library, which is now the
194    default.
196    7. Got rid of the leading zero in the definition of PCRE_MINOR because 08 and
197    09 are not valid octal constants. Single digits will be used for minor values
198    less than 10.
200    8. Defined REG_EXTENDED and REG_NOSUB as zero in the POSIX header, so that
201    existing programs that set these in the POSIX interface can use PCRE without
202    modification.
204    9. Added a new function, pcre_fullinfo() with an extensible interface. It can
205    return all that pcre_info() returns, plus additional data. The pcre_info()
206    function is retained for compatibility, but is considered to be obsolete.
208    10. Added experimental recursion feature (?R) to handle one common case that
209    Perl 5.6 will be able to do with (?p{...}).
211    11. Added support for POSIX character classes like [:alpha:], which Perl is
212    adopting.
215  Version 2.08 31-Aug-99  Version 2.08 31-Aug-99
216  ----------------------  ----------------------

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