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revision 220 by ph10, Thu Aug 16 13:29:39 2007 UTC revision 1033 by ph10, Mon Sep 10 11:02:48 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    .  The EBCDIC support, which had decayed, has had a spring clean.
16    
17    
18    Release 8.31 06-July-2012
19    -------------------------
20    
21    This is mainly a bug-fixing release, with a small number of developments:
22    
23    . The JIT compiler now supports partial matching and the (*MARK) and
24      (*COMMIT) verbs.
25    
26    . PCRE_INFO_MAXLOOKBEHIND can be used to find the longest lookbehind in a
27      pattern.
28    
29    . There should be a performance improvement when using the heap instead of the
30      stack for recursion.
31    
32    . pcregrep can now be linked with libedit as an alternative to libreadline.
33    
34    . pcregrep now has a --file-list option where the list of files to scan is
35      given as a file.
36    
37    . pcregrep now recognizes binary files and there are related options.
38    
39    . The Unicode tables have been updated to 6.1.0.
40    
41    As always, the full list of changes is in the ChangeLog file.
42    
43    
44    Release 8.30 04-February-2012
45    -----------------------------
46    
47    Release 8.30 introduces a major new feature: support for 16-bit character
48    strings, compiled as a separate library. There are a few changes to the
49    8-bit library, in addition to some bug fixes.
50    
51    . The pcre_info() function, which has been obsolete for over 10 years, has
52      been removed.
53    
54    . When a compiled pattern was saved to a file and later reloaded on a host
55      with different endianness, PCRE used automatically to swap the bytes in some
56      of the data fields. With the advent of the 16-bit library, where more of this
57      swapping is needed, it is no longer done automatically. Instead, the bad
58      endianness is detected and a specific error is given. The user can then call
59      a new function called pcre_pattern_to_host_byte_order() (or an equivalent
60      16-bit function) to do the swap.
61    
62    . In UTF-8 mode, the values 0xd800 to 0xdfff are not legal Unicode
63      code points and are now faulted. (They are the so-called "surrogates"
64      that are reserved for coding high values in UTF-16.)
65    
66    
67    Release 8.21 12-Dec-2011
68    ------------------------
69    
70    This is almost entirely a bug-fix release. The only new feature is the ability
71    to obtain the size of the memory used by the JIT compiler.
72    
73    
74    Release 8.20 21-Oct-2011
75    ------------------------
76    
77    The main change in this release is the inclusion of Zoltan Herczeg's
78    just-in-time compiler support, which can be accessed by building PCRE with
79    --enable-jit. Large performance benefits can be had in many situations. 8.20
80    also fixes an unfortunate bug that was introduced in 8.13 as well as tidying up
81    a number of infelicities and differences from Perl.
82    
83    
84    Release 8.13 16-Aug-2011
85    ------------------------
86    
87    This is mainly a bug-fix release. There has been a lot of internal refactoring.
88    The Unicode tables have been updated. The only new feature in the library is
89    the passing of *MARK information to callouts. Some additions have been made to
90    pcretest to make testing easier and more comprehensive. There is a new option
91    for pcregrep to adjust its internal buffer size.
92    
93    
94    Release 8.12 15-Jan-2011
95    ------------------------
96    
97    This release fixes some bugs in pcregrep, one of which caused the tests to fail
98    on 64-bit big-endian systems. There are no changes to the code of the library.
99    
100    
101    Release 8.11 10-Dec-2010
102    ------------------------
103    
104    A number of bugs in the library and in pcregrep have been fixed. As always, see
105    ChangeLog for details. The following are the non-bug-fix changes:
106    
107    . Added --match-limit and --recursion-limit to pcregrep.
108    
109    . Added an optional parentheses number to the -o and --only-matching options
110      of pcregrep.
111    
112    . Changed the way PCRE_PARTIAL_HARD affects the matching of $, \z, \Z, \b, and
113      \B.
114    
115    . Added PCRE_ERROR_SHORTUTF8 to make it possible to distinguish between a
116      bad UTF-8 sequence and one that is incomplete when using PCRE_PARTIAL_HARD.
117    
118    . Recognize (*NO_START_OPT) at the start of a pattern to set the PCRE_NO_
119      START_OPTIMIZE option, which is now allowed at compile time
120    
121    
122    Release 8.10 25-Jun-2010
123    ------------------------
124    
125    There are two major additions: support for (*MARK) and friends, and the option
126    PCRE_UCP, which changes the behaviour of \b, \d, \s, and \w (and their
127    opposites) so that they make use of Unicode properties. There are also a number
128    of lesser new features, and several bugs have been fixed. A new option,
129    --line-buffered, has been added to pcregrep, for use when it is connected to
130    pipes.
131    
132    
133    Release 8.02 19-Mar-2010
134    ------------------------
135    
136    Another bug-fix release.
137    
138    
139    Release 8.01 19-Jan-2010
140    ------------------------
141    
142    This is a bug-fix release. Several bugs in the code itself and some bugs and
143    infelicities in the build system have been fixed.
144    
145    
146    Release 8.00 19-Oct-09
147    ----------------------
148    
149    Bugs have been fixed in the library and in pcregrep. There are also some
150    enhancements. Restrictions on patterns used for partial matching have been
151    removed, extra information is given for partial matches, the partial matching
152    process has been improved, and an option to make a partial match override a
153    full match is available. The "study" process has been enhanced by finding a
154    lower bound matching length. Groups with duplicate numbers may now have
155    duplicated names without the use of PCRE_DUPNAMES. However, they may not have
156    different names. The documentation has been revised to reflect these changes.
157    The version number has been expanded to 3 digits as it is clear that the rate
158    of change is not slowing down.
159    
160    
161    Release 7.9 11-Apr-09
162    ---------------------
163    
164    Mostly bugfixes and tidies with just a couple of minor functional additions.
165    
166    
167    Release 7.8 05-Sep-08
168    ---------------------
169    
170    More bug fixes, plus a performance improvement in Unicode character property
171    lookup.
172    
173    
174    Release 7.7 07-May-08
175    ---------------------
176    
177    This is once again mainly a bug-fix release, but there are a couple of new
178    features.
179    
180    
181    Release 7.6 28-Jan-08
182    ---------------------
183    
184    The main reason for having this release so soon after 7.5 is because it fixes a
185    potential buffer overflow problem in pcre_compile() when run in UTF-8 mode. In
186    addition, the CMake configuration files have been brought up to date.
187    
188    
189    Release 7.5 10-Jan-08
190    ---------------------
191    
192    This is mainly a bug-fix release. However the ability to link pcregrep with
193    libz or libbz2 and the ability to link pcretest with libreadline have been
194    added. Also the --line-offsets and --file-offsets options were added to
195    pcregrep.
196    
197    
198    Release 7.4 21-Sep-07
199    ---------------------
200    
201    The only change of specification is the addition of options to control whether
202    \R matches any Unicode line ending (the default) or just CR, LF, and CRLF.
203    Otherwise, the changes are bug fixes and a refactoring to reduce the number of
204    relocations needed in a shared library. There have also been some documentation
205    updates, in particular, some more information about using CMake to build PCRE
206    has been added to the NON-UNIX-USE file.
207    
208    
209    Release 7.3 28-Aug-07
210  ---------------------  ---------------------
211    
212  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 221  Most changes are bug fixes. Some that ar
221     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
222     has a limited repeat count.     has a limited repeat count.
223    
224    4. When CRLF is a valid line-ending sequence, pcre_exec() and pcre_dfa_exec()
225       no longer advance by two characters instead of one when an unanchored match
226       fails at CRLF if there are explicit CR or LF matches within the pattern.
227       This gets rid of some anomalous effects that previously occurred.
228    
229    5. Some PCRE-specific settings for varying the newline options at the start of
230       a pattern have been added.
231    
232    
233  Release 7.2 19-Jun-07  Release 7.2 19-Jun-07
234  ---------------------  ---------------------

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