/[pcre]/code/trunk/doc/pcre.txt
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revision 182 by ph10, Wed Jun 13 15:09:54 2007 UTC revision 185 by ph10, Tue Jun 19 13:39:46 2007 UTC
# Line 3047  BACKSLASH Line 3047  BACKSLASH
3047     Unicode character properties     Unicode character properties
3048    
3049         When PCRE is built with Unicode character property support, three addi-         When PCRE is built with Unicode character property support, three addi-
3050         tional escape sequences to match  character  properties  are  available         tional escape sequences that match characters with specific  properties
3051         when UTF-8 mode is selected. They are:         are  available.   When not in UTF-8 mode, these sequences are of course
3052           limited to testing characters whose codepoints are less than  256,  but
3053           they do work in this mode.  The extra escape sequences are:
3054    
3055           \p{xx}   a character with the xx property           \p{xx}   a character with the xx property
3056           \P{xx}   a character without the xx property           \P{xx}   a character without the xx property
# Line 3162  BACKSLASH Line 3164  BACKSLASH
3164         That is, it matches a character without the "mark"  property,  followed         That is, it matches a character without the "mark"  property,  followed
3165         by  zero  or  more  characters with the "mark" property, and treats the         by  zero  or  more  characters with the "mark" property, and treats the
3166         sequence as an atomic group (see below).  Characters  with  the  "mark"         sequence as an atomic group (see below).  Characters  with  the  "mark"
3167         property are typically accents that affect the preceding character.         property  are  typically  accents  that affect the preceding character.
3168           None of them have codepoints less than 256, so  in  non-UTF-8  mode  \X
3169           matches any one character.
3170    
3171         Matching  characters  by Unicode property is not fast, because PCRE has         Matching  characters  by Unicode property is not fast, because PCRE has
3172         to search a structure that contains  data  for  over  fifteen  thousand         to search a structure that contains  data  for  over  fifteen  thousand
# Line 4539  AUTHOR Line 4543  AUTHOR
4543    
4544  REVISION  REVISION
4545    
4546         Last updated: 13 June 2007         Last updated: 19 June 2007
4547         Copyright (c) 1997-2007 University of Cambridge.         Copyright (c) 1997-2007 University of Cambridge.
4548  ------------------------------------------------------------------------------  ------------------------------------------------------------------------------
4549    
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