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 News about PCRE releases  News about PCRE releases
 ------------------------  ------------------------
   
   Release 8.34 15-December-2013
   -----------------------------
   
   As well as fixing the inevitable bugs, performance has been improved by
   refactoring and extending the amount of "auto-possessification" that PCRE does.
   Other notable changes:
   
   .  Implemented PCRE_INFO_MATCH_EMPTY, which yields 1 if the pattern can match
      an empty string. If it can, pcretest shows this in its information output.
   
   .  A back reference to a named subpattern when there is more than one of the
      same name now checks them in the order in which they appear in the pattern.
      The first one that is set is used for the reference. Previously only the
      first one was inspected. This change makes PCRE more compatible with Perl.
   
   .  Unicode character properties were updated from Unicode 6.3.0.
   
   .  The character VT has been added to the set of characters that match \s and
      are generally treated as white space, following this same change in Perl
      5.18. There is now no difference between "Perl space" and "POSIX space".
   
   .  Perl has changed its handling of \8 and \9. If there is no previously
      encountered capturing group of those numbers, they are treated as the
      literal characters 8 and 9 instead of a binary zero followed by the
      literals. PCRE now does the same.
   
   .  Following Perl, added \o{} to specify codepoints in octal, making it
      possible to specify values greater than 0777 and also making them
      unambiguous.
   
   .  In UCP mode, \s was not matching two of the characters that Perl matches,
      namely NEL (U+0085) and MONGOLIAN VOWEL SEPARATOR (U+180E), though they
      were matched by \h.
   
   .  Add JIT support for the 64 bit TileGX architecture.
   
   .  Upgraded the handling of the POSIX classes [:graph:], [:print:], and
      [:punct:] when PCRE_UCP is set so as to include the same characters as Perl
      does in Unicode mode.
   
   .  Perl no longer allows group names to start with digits, so I have made this
      change also in PCRE.
   
   .  Added support for [[:<:]] and [[:>:]] as used in the BSD POSIX library to
      mean "start of word" and "end of word", respectively, as a transition aid.
   
   
 Release 8.33 28-May-2013  Release 8.33 28-May-2013
 --------------------------  --------------------------
   
Removed from v.1.1.1.4  
changed lines
  Added in v.1.1.1.5

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