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revision 134 by ph10, Mon Mar 26 16:00:17 2007 UTC revision 176 by ph10, Mon Jun 11 13:48:37 2007 UTC
# Line 1  Line 1 
1  ChangeLog for PCRE  ChangeLog for PCRE
2  ------------------  ------------------
3    
4  Version 7.1 12-Mar-07  Version 7.2 05-June-07
5    ---------------------
6    
7     1. If the fr_FR locale cannot be found for test 3, try the "french" locale,
8        which is apparently normally available under Windows.
9    
10     2. Re-jig the pcregrep tests with different newline settings in an attempt
11        to make them independent of the local environment's newline setting.
12    
13     3. Add code to configure.ac to remove -g from the CFLAGS default settings.
14    
15     4. Some of the "internals" tests were previously cut out when the link size
16        was not 2, because the output contained actual offsets. The recent new
17        "Z" feature of pcretest means that these can be cut out, making the tests
18        usable with all link sizes.
19    
20     5. Implemented Stan Switzer's goto replacement for longjmp() when not using
21        stack recursion. This gives a massive performance boost under BSD, but just
22        a small improvement under Linux. However, it saves one field in the frame
23        in all cases.
24    
25     6. Added more features from the forthcoming Perl 5.10:
26    
27        (a) (?-n) (where n is a string of digits) is a relative subroutine or
28            recursion call. It refers to the nth most recently opened parentheses.
29    
30        (b) (?+n) is also a relative subroutine call; it refers to the nth next
31            to be opened parentheses.
32    
33        (c) Conditions that refer to capturing parentheses can be specified
34            relatively, for example, (?(-2)... or (?(+3)...
35    
36        (d) \K resets the start of the current match so that everything before
37            is not part of it.
38    
39        (e) \k{name} is synonymous with \k<name> and \k'name' (.NET compatible).
40    
41        (f) \g{name} is another synonym - part of Perl 5.10's unification of
42            reference syntax.
43    
44        (g) (?| introduces a group in which the numbering of parentheses in each
45            alternative starts with the same number.
46    
47     7. Added two new calls to pcre_fullinfo(): PCRE_INFO_OKPARTIAL and
48        PCRE_INFO_JCHANGED.
49    
50     8. A pattern such as  (.*(.)?)*  caused pcre_exec() to fail by either not
51        terminating or by crashing. Diagnosed by Viktor Griph; it was in the code
52        for detecting groups that can match an empty string.
53    
54     9. A pattern with a very large number of alternatives (more than several
55        hundred) was running out of internal workspace during the pre-compile
56        phase, where pcre_compile() figures out how much memory will be needed. A
57        bit of new cunning has reduced the workspace needed for groups with
58        alternatives. The 1000-alternative test pattern now uses 12 bytes of
59        workspace instead of running out of the 4096 that are available.
60    
61    10. Inserted some missing (unsigned int) casts to get rid of compiler warnings.
62    
63    
64    Version 7.1 24-Apr-07
65  ---------------------  ---------------------
66    
67   1. Applied Bob Rossi and Daniel G's patches to convert the build system to one   1. Applied Bob Rossi and Daniel G's patches to convert the build system to one
# Line 33  Version 7.1 12-Mar-07 Line 93  Version 7.1 12-Mar-07
93   5. Updated the support (such as it is) for Virtual Pascal, thanks to Stefan   5. Updated the support (such as it is) for Virtual Pascal, thanks to Stefan
94      Weber: (1) pcre_internal.h was missing some function renames; (2) updated      Weber: (1) pcre_internal.h was missing some function renames; (2) updated
95      makevp.bat for the current PCRE, using the additional files      makevp.bat for the current PCRE, using the additional files
96      makevp-c.txt, makevp-l.txt, and pcregexp.pas.      makevp_c.txt, makevp_l.txt, and pcregexp.pas.
97    
98   6. A Windows user reported a minor discrepancy with test 2, which turned out   6. A Windows user reported a minor discrepancy with test 2, which turned out
99      to be caused by a trailing space on an input line that had got lost in his      to be caused by a trailing space on an input line that had got lost in his
# Line 127  Version 7.1 12-Mar-07 Line 187  Version 7.1 12-Mar-07
187      in an attempt to make files that differ only in their line terminators      in an attempt to make files that differ only in their line terminators
188      compare equal. This works on Linux.      compare equal. This works on Linux.
189    
190    17. Under certain error circumstances pcregrep might try to free random memory
191        as it exited. This is now fixed, thanks to valgrind.
192    
193    19. In pcretest, if the pattern /(?m)^$/g<any> was matched against the string
194        "abc\r\n\r\n", it found an unwanted second match after the second \r. This
195        was because its rules for how to advance for /g after matching an empty
196        string at the end of a line did not allow for this case. They now check for
197        it specially.
198    
199    20. pcretest is supposed to handle patterns and data of any length, by
200        extending its buffers when necessary. It was getting this wrong when the
201        buffer for a data line had to be extended.
202    
203    21. Added PCRE_NEWLINE_ANYCRLF which is like ANY, but matches only CR, LF, or
204        CRLF as a newline sequence.
205    
206    22. Code for handling Unicode properties in pcre_dfa_exec() wasn't being cut
207        out by #ifdef SUPPORT_UCP. This did no harm, as it could never be used, but
208        I have nevertheless tidied it up.
209    
210    23. Added some casts to kill warnings from HP-UX ia64 compiler.
211    
212    24. Added a man page for pcre-config.
213    
214    
215  Version 7.0 19-Dec-06  Version 7.0 19-Dec-06
216  ---------------------  ---------------------

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