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revision 787 by ph10, Mon Dec 5 12:33:44 2011 UTC revision 788 by ph10, Tue Dec 6 15:38:01 2011 UTC
# Line 651  pattern such as (\1)(a) succeeds when th Line 651  pattern such as (\1)(a) succeeds when th
651  an "a" in the subject), whereas it fails by default, for Perl compatibility.  an "a" in the subject), whereas it fails by default, for Perl compatibility.
652  </P>  </P>
653  <P>  <P>
654  (3) \U matches an upper case "U" character; by default \U causes a compile  (3) \U matches an upper case "U" character; by default \U causes a compile
655  time error (Perl uses \U to upper case subsequent characters).  time error (Perl uses \U to upper case subsequent characters).
656  </P>  </P>
657  <P>  <P>
658  (4) \u matches a lower case "u" character unless it is followed by four  (4) \u matches a lower case "u" character unless it is followed by four
659  hexadecimal digits, in which case the hexadecimal number defines the code point  hexadecimal digits, in which case the hexadecimal number defines the code point
660  to match. By default, \u causes a compile time error (Perl uses it to upper  to match. By default, \u causes a compile time error (Perl uses it to upper
661  case the following character).  case the following character).
662  </P>  </P>
663  <P>  <P>
664  (5) \x matches a lower case "x" character unless it is followed by two  (5) \x matches a lower case "x" character unless it is followed by two
665  hexadecimal digits, in which case the hexadecimal number defines the code point  hexadecimal digits, in which case the hexadecimal number defines the code point
666  to match. By default, as in Perl, a hexadecimal number is always expected after  to match. By default, as in Perl, a hexadecimal number is always expected after
667  \x, but it may have zero, one, or two digits (so, for example, \xz matches a  \x, but it may have zero, one, or two digits (so, for example, \xz matches a
668  binary zero character followed by z).  binary zero character followed by z).
669  <pre>  <pre>
670    PCRE_MULTILINE    PCRE_MULTILINE

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