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version 1.1.1.4, 2013/07/22 08:25:56 version 1.1.1.5, 2014/06/15 19:46:05
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.TH PCRECOMPAT 3 "19 March 2013" "PCRE 8.33".TH PCRECOMPAT 3 "10 November 2013" "PCRE 8.34"
 .SH NAME  .SH NAME
 PCRE - Perl-compatible regular expressions  PCRE - Perl-compatible regular expressions
 .SH "DIFFERENCES BETWEEN PCRE AND PERL"  .SH "DIFFERENCES BETWEEN PCRE AND PERL"
Line 122  an error is given at compile time. Line 122  an error is given at compile time.
 .P  .P
 15. Perl recognizes comments in some places that PCRE does not, for example,  15. Perl recognizes comments in some places that PCRE does not, for example,
 between the ( and ? at the start of a subpattern. If the /x modifier is set,  between the ( and ? at the start of a subpattern. If the /x modifier is set,
Perl allows white space between ( and ? but PCRE never does, even if thePerl allows white space between ( and ? (though current Perls warn that this is
PCRE_EXTENDED option is set.deprecated) but PCRE never does, even if the PCRE_EXTENDED option is set.
 .P  .P
16. In PCRE, the upper/lower case character properties Lu and Ll are not16. Perl, when in warning mode, gives warnings for character classes such as
 [A-\ed] or [a-[:digit:]]. It then treats the hyphens as literals. PCRE has no
 warning features, so it gives an error in these cases because they are almost
 certainly user mistakes.
 .P
 17. In PCRE, the upper/lower case character properties Lu and Ll are not
 affected when case-independent matching is specified. For example, \ep{Lu}  affected when case-independent matching is specified. For example, \ep{Lu}
 always matches an upper case letter. I think Perl has changed in this respect;  always matches an upper case letter. I think Perl has changed in this respect;
 in the release at the time of writing (5.16), \ep{Lu} and \ep{Ll} match all  in the release at the time of writing (5.16), \ep{Lu} and \ep{Ll} match all
 letters, regardless of case, when case independence is specified.  letters, regardless of case, when case independence is specified.
 .P  .P
17. PCRE provides some extensions to the Perl regular expression facilities.18. PCRE provides some extensions to the Perl regular expression facilities.
 Perl 5.10 includes new features that are not in earlier versions of Perl, some  Perl 5.10 includes new features that are not in earlier versions of Perl, some
 of which (such as named parentheses) have been in PCRE for some time. This list  of which (such as named parentheses) have been in PCRE for some time. This list
 is with respect to Perl 5.10:  is with respect to Perl 5.10:
Line 190  Cambridge CB2 3QH, England. Line 195  Cambridge CB2 3QH, England.
 .rs  .rs
 .sp  .sp
 .nf  .nf
Last updated: 19 March 2013Last updated: 10 November 2013
 Copyright (c) 1997-2013 University of Cambridge.  Copyright (c) 1997-2013 University of Cambridge.
 .fi  .fi
Removed from v.1.1.1.4  
changed lines
  Added in v.1.1.1.5

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