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revision 220 by ph10, Thu Aug 16 13:29:39 2007 UTC revision 1011 by ph10, Sat Aug 25 11:36:15 2012 UTC
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1  News about PCRE releases  News about PCRE releases
2  ------------------------  ------------------------
3    
4    Release 8.32 xx-xxxx-2012
5    -------------------------
6    
7  Release 7.3 16-Aug-07  .  A number of issues in pcregrep have been fixed, making it more compatible
8       with GNU grep. In particular, --exclude and --include (and variants) apply
9       to all files now, not just those obtained from scanning a directory
10       recursively. In Windows environments, the default action for directories is
11       now "skip" instead of "read" (which provokes an error).
12    
13    .  \X now matches a Unicode extended grapheme cluster.
14    
15    
16    Release 8.31 06-July-2012
17    -------------------------
18    
19    This is mainly a bug-fixing release, with a small number of developments:
20    
21    . The JIT compiler now supports partial matching and the (*MARK) and
22      (*COMMIT) verbs.
23    
24    . PCRE_INFO_MAXLOOKBEHIND can be used to find the longest lookbehind in a
25      pattern.
26    
27    . There should be a performance improvement when using the heap instead of the
28      stack for recursion.
29    
30    . pcregrep can now be linked with libedit as an alternative to libreadline.
31    
32    . pcregrep now has a --file-list option where the list of files to scan is
33      given as a file.
34    
35    . pcregrep now recognizes binary files and there are related options.
36    
37    . The Unicode tables have been updated to 6.1.0.
38    
39    As always, the full list of changes is in the ChangeLog file.
40    
41    
42    Release 8.30 04-February-2012
43    -----------------------------
44    
45    Release 8.30 introduces a major new feature: support for 16-bit character
46    strings, compiled as a separate library. There are a few changes to the
47    8-bit library, in addition to some bug fixes.
48    
49    . The pcre_info() function, which has been obsolete for over 10 years, has
50      been removed.
51    
52    . When a compiled pattern was saved to a file and later reloaded on a host
53      with different endianness, PCRE used automatically to swap the bytes in some
54      of the data fields. With the advent of the 16-bit library, where more of this
55      swapping is needed, it is no longer done automatically. Instead, the bad
56      endianness is detected and a specific error is given. The user can then call
57      a new function called pcre_pattern_to_host_byte_order() (or an equivalent
58      16-bit function) to do the swap.
59    
60    . In UTF-8 mode, the values 0xd800 to 0xdfff are not legal Unicode
61      code points and are now faulted. (They are the so-called "surrogates"
62      that are reserved for coding high values in UTF-16.)
63    
64    
65    Release 8.21 12-Dec-2011
66    ------------------------
67    
68    This is almost entirely a bug-fix release. The only new feature is the ability
69    to obtain the size of the memory used by the JIT compiler.
70    
71    
72    Release 8.20 21-Oct-2011
73    ------------------------
74    
75    The main change in this release is the inclusion of Zoltan Herczeg's
76    just-in-time compiler support, which can be accessed by building PCRE with
77    --enable-jit. Large performance benefits can be had in many situations. 8.20
78    also fixes an unfortunate bug that was introduced in 8.13 as well as tidying up
79    a number of infelicities and differences from Perl.
80    
81    
82    Release 8.13 16-Aug-2011
83    ------------------------
84    
85    This is mainly a bug-fix release. There has been a lot of internal refactoring.
86    The Unicode tables have been updated. The only new feature in the library is
87    the passing of *MARK information to callouts. Some additions have been made to
88    pcretest to make testing easier and more comprehensive. There is a new option
89    for pcregrep to adjust its internal buffer size.
90    
91    
92    Release 8.12 15-Jan-2011
93    ------------------------
94    
95    This release fixes some bugs in pcregrep, one of which caused the tests to fail
96    on 64-bit big-endian systems. There are no changes to the code of the library.
97    
98    
99    Release 8.11 10-Dec-2010
100    ------------------------
101    
102    A number of bugs in the library and in pcregrep have been fixed. As always, see
103    ChangeLog for details. The following are the non-bug-fix changes:
104    
105    . Added --match-limit and --recursion-limit to pcregrep.
106    
107    . Added an optional parentheses number to the -o and --only-matching options
108      of pcregrep.
109    
110    . Changed the way PCRE_PARTIAL_HARD affects the matching of $, \z, \Z, \b, and
111      \B.
112    
113    . Added PCRE_ERROR_SHORTUTF8 to make it possible to distinguish between a
114      bad UTF-8 sequence and one that is incomplete when using PCRE_PARTIAL_HARD.
115    
116    . Recognize (*NO_START_OPT) at the start of a pattern to set the PCRE_NO_
117      START_OPTIMIZE option, which is now allowed at compile time
118    
119    
120    Release 8.10 25-Jun-2010
121    ------------------------
122    
123    There are two major additions: support for (*MARK) and friends, and the option
124    PCRE_UCP, which changes the behaviour of \b, \d, \s, and \w (and their
125    opposites) so that they make use of Unicode properties. There are also a number
126    of lesser new features, and several bugs have been fixed. A new option,
127    --line-buffered, has been added to pcregrep, for use when it is connected to
128    pipes.
129    
130    
131    Release 8.02 19-Mar-2010
132    ------------------------
133    
134    Another bug-fix release.
135    
136    
137    Release 8.01 19-Jan-2010
138    ------------------------
139    
140    This is a bug-fix release. Several bugs in the code itself and some bugs and
141    infelicities in the build system have been fixed.
142    
143    
144    Release 8.00 19-Oct-09
145    ----------------------
146    
147    Bugs have been fixed in the library and in pcregrep. There are also some
148    enhancements. Restrictions on patterns used for partial matching have been
149    removed, extra information is given for partial matches, the partial matching
150    process has been improved, and an option to make a partial match override a
151    full match is available. The "study" process has been enhanced by finding a
152    lower bound matching length. Groups with duplicate numbers may now have
153    duplicated names without the use of PCRE_DUPNAMES. However, they may not have
154    different names. The documentation has been revised to reflect these changes.
155    The version number has been expanded to 3 digits as it is clear that the rate
156    of change is not slowing down.
157    
158    
159    Release 7.9 11-Apr-09
160    ---------------------
161    
162    Mostly bugfixes and tidies with just a couple of minor functional additions.
163    
164    
165    Release 7.8 05-Sep-08
166    ---------------------
167    
168    More bug fixes, plus a performance improvement in Unicode character property
169    lookup.
170    
171    
172    Release 7.7 07-May-08
173    ---------------------
174    
175    This is once again mainly a bug-fix release, but there are a couple of new
176    features.
177    
178    
179    Release 7.6 28-Jan-08
180    ---------------------
181    
182    The main reason for having this release so soon after 7.5 is because it fixes a
183    potential buffer overflow problem in pcre_compile() when run in UTF-8 mode. In
184    addition, the CMake configuration files have been brought up to date.
185    
186    
187    Release 7.5 10-Jan-08
188    ---------------------
189    
190    This is mainly a bug-fix release. However the ability to link pcregrep with
191    libz or libbz2 and the ability to link pcretest with libreadline have been
192    added. Also the --line-offsets and --file-offsets options were added to
193    pcregrep.
194    
195    
196    Release 7.4 21-Sep-07
197    ---------------------
198    
199    The only change of specification is the addition of options to control whether
200    \R matches any Unicode line ending (the default) or just CR, LF, and CRLF.
201    Otherwise, the changes are bug fixes and a refactoring to reduce the number of
202    relocations needed in a shared library. There have also been some documentation
203    updates, in particular, some more information about using CMake to build PCRE
204    has been added to the NON-UNIX-USE file.
205    
206    
207    Release 7.3 28-Aug-07
208  ---------------------  ---------------------
209    
210  Most changes are bug fixes. Some that are not:  Most changes are bug fixes. Some that are not:
# Line 17  Most changes are bug fixes. Some that ar Line 219  Most changes are bug fixes. Some that ar
219     consequence there is no longer a hard limit on the size of a subpattern that     consequence there is no longer a hard limit on the size of a subpattern that
220     has a limited repeat count.     has a limited repeat count.
221    
222    4. When CRLF is a valid line-ending sequence, pcre_exec() and pcre_dfa_exec()
223       no longer advance by two characters instead of one when an unanchored match
224       fails at CRLF if there are explicit CR or LF matches within the pattern.
225       This gets rid of some anomalous effects that previously occurred.
226    
227    5. Some PCRE-specific settings for varying the newline options at the start of
228       a pattern have been added.
229    
230    
231  Release 7.2 19-Jun-07  Release 7.2 19-Jun-07
232  ---------------------  ---------------------

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