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version 1.1.1.2, 2012/02/21 23:50:25 version 1.1.1.3, 2012/10/09 09:19:17
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 ChangeLog for PCRE  ChangeLog for PCRE
 ------------------  ------------------
   
   Version 8.31 06-July-2012
   -------------------------
   
   1.  Fixing a wrong JIT test case and some compiler warnings.
   
   2.  Removed a bashism from the RunTest script.
   
   3.  Add a cast to pcre_exec.c to fix the warning "unary minus operator applied
       to unsigned type, result still unsigned" that was given by an MS compiler
       on encountering the code "-sizeof(xxx)".
   
   4.  Partial matching support is added to the JIT compiler.
   
   5.  Fixed several bugs concerned with partial matching of items that consist
       of more than one character:
   
       (a) /^(..)\1/ did not partially match "aba" because checking references was
           done on an "all or nothing" basis. This also applied to repeated
           references.
   
       (b) \R did not give a hard partial match if \r was found at the end of the
           subject.
   
       (c) \X did not give a hard partial match after matching one or more
           characters at the end of the subject.
   
       (d) When newline was set to CRLF, a pattern such as /a$/ did not recognize
           a partial match for the string "\r".
   
       (e) When newline was set to CRLF, the metacharacter "." did not recognize
           a partial match for a CR character at the end of the subject string.
   
   6.  If JIT is requested using /S++ or -s++ (instead of just /S+ or -s+) when
       running pcretest, the text "(JIT)" added to the output whenever JIT is
       actually used to run the match.
   
   7.  Individual JIT compile options can be set in pcretest by following -s+[+]
       or /S+[+] with a digit between 1 and 7.
   
   8.  OP_NOT now supports any UTF character not just single-byte ones.
   
   9.  (*MARK) control verb is now supported by the JIT compiler.
   
   10. The command "./RunTest list" lists the available tests without actually
       running any of them. (Because I keep forgetting what they all are.)
   
   11. Add PCRE_INFO_MAXLOOKBEHIND.
   
   12. Applied a (slightly modified) user-supplied patch that improves performance
       when the heap is used for recursion (compiled with --disable-stack-for-
       recursion). Instead of malloc and free for each heap frame each time a
       logical recursion happens, frames are retained on a chain and re-used where
       possible. This sometimes gives as much as 30% improvement.
   
   13. As documented, (*COMMIT) is now confined to within a recursive subpattern
       call.
   
   14. As documented, (*COMMIT) is now confined to within a positive assertion.
   
   15. It is now possible to link pcretest with libedit as an alternative to
       libreadline.
   
   16. (*COMMIT) control verb is now supported by the JIT compiler.
   
   17. The Unicode data tables have been updated to Unicode 6.1.0.
   
   18. Added --file-list option to pcregrep.
   
   19. Added binary file support to pcregrep, including the -a, --binary-files,
       -I, and --text options.
   
   20. The madvise function is renamed for posix_madvise for QNX compatibility
       reasons. Fixed by Giuseppe D'Angelo.
   
   21. Fixed a bug for backward assertions with REVERSE 0 in the JIT compiler.
   
   22. Changed the option for creating symbolic links for 16-bit man pages from
       -s to -sf so that re-installing does not cause issues.
   
   23. Support PCRE_NO_START_OPTIMIZE in JIT as (*MARK) support requires it.
   
   24. Fixed a very old bug in pcretest that caused errors with restarted DFA
       matches in certain environments (the workspace was not being correctly
       retained). Also added to pcre_dfa_exec() a simple plausibility check on
       some of the workspace data at the beginning of a restart.
   
   25. \s*\R was auto-possessifying the \s* when it should not, whereas \S*\R
       was not doing so when it should - probably a typo introduced by SVN 528
       (change 8.10/14).
   
   26. When PCRE_UCP was not set, \w+\x{c4} was incorrectly auto-possessifying the
       \w+ when the character tables indicated that \x{c4} was a word character.
       There were several related cases, all because the tests for doing a table
       lookup were testing for characters less than 127 instead of 255.
   
   27. If a pattern contains capturing parentheses that are not used in a match,
       their slots in the ovector are set to -1. For those that are higher than
       any matched groups, this happens at the end of processing. In the case when
       there were back references that the ovector was too small to contain
       (causing temporary malloc'd memory to be used during matching), and the
       highest capturing number was not used, memory off the end of the ovector
       was incorrectly being set to -1. (It was using the size of the temporary
       memory instead of the true size.)
   
   28. To catch bugs like 27 using valgrind, when pcretest is asked to specify an
       ovector size, it uses memory at the end of the block that it has got.
   
   29. Check for an overlong MARK name and give an error at compile time. The
       limit is 255 for the 8-bit library and 65535 for the 16-bit library.
   
   30. JIT compiler update.
   
   31. JIT is now supported on jailbroken iOS devices. Thanks for Ruiger
       Rill for the patch.
   
   32. Put spaces around SLJIT_PRINT_D in the JIT compiler. Required by CXX11.
   
   33. Variable renamings in the PCRE-JIT compiler. No functionality change.
   
   34. Fixed typos in pcregrep: in two places there was SUPPORT_LIBZ2 instead of
       SUPPORT_LIBBZ2. This caused a build problem when bzip2 but not gzip (zlib)
       was enabled.
   
   35. Improve JIT code generation for greedy plus quantifier.
   
   36. When /((?:a?)*)*c/ or /((?>a?)*)*c/ was matched against "aac", it set group
       1 to "aa" instead of to an empty string. The bug affected repeated groups
       that could potentially match an empty string.
   
   37. Optimizing single character iterators in JIT.
   
   38. Wide characters specified with \uxxxx in JavaScript mode are now subject to
       the same checks as \x{...} characters in non-JavaScript mode. Specifically,
       codepoints that are too big for the mode are faulted, and in a UTF mode,
       disallowed codepoints are also faulted.
   
   39. If PCRE was compiled with UTF support, in three places in the DFA
       matcher there was code that should only have been obeyed in UTF mode, but
       was being obeyed unconditionally. In 8-bit mode this could cause incorrect
       processing when bytes with values greater than 127 were present. In 16-bit
       mode the bug would be provoked by values in the range 0xfc00 to 0xdc00. In
       both cases the values are those that cannot be the first data item in a UTF
       character. The three items that might have provoked this were recursions,
       possessively repeated groups, and atomic groups.
   
   40. Ensure that libpcre is explicitly listed in the link commands for pcretest
       and pcregrep, because some OS require shared objects to be explicitly
       passed to ld, causing the link step to fail if they are not.
   
   41. There were two incorrect #ifdefs in pcre_study.c, meaning that, in 16-bit
       mode, patterns that started with \h* or \R* might be incorrectly matched.
   
   
 Version 8.30 04-February-2012  Version 8.30 04-February-2012
 -----------------------------  -----------------------------
   
Removed from v.1.1.1.2  
changed lines
  Added in v.1.1.1.3

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