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revision 153 by ph10, Wed Apr 18 09:12:14 2007 UTC revision 208 by ph10, Mon Aug 6 15:23:29 2007 UTC
# Line 58  supported by PCRE are given in separate Line 58  supported by PCRE are given in separate
58  <a href="pcrepattern.html"><b>pcrepattern</b></a>  <a href="pcrepattern.html"><b>pcrepattern</b></a>
59  and  and
60  <a href="pcrecompat.html"><b>pcrecompat</b></a>  <a href="pcrecompat.html"><b>pcrecompat</b></a>
61  pages.  pages. There is a syntax summary in the
62    <a href="pcresyntax.html"><b>pcresyntax</b></a>
63    page.
64  </P>  </P>
65  <P>  <P>
66  Some features of PCRE can be included, excluded, or changed when the library is  Some features of PCRE can be included, excluded, or changed when the library is
# Line 98  follows: Line 100  follows:
100    pcrematching      discussion of the two matching algorithms    pcrematching      discussion of the two matching algorithms
101    pcrepartial       details of the partial matching facility    pcrepartial       details of the partial matching facility
102    pcrepattern       syntax and semantics of supported regular expressions    pcrepattern       syntax and semantics of supported regular expressions
103      pcresyntax        quick syntax reference
104    pcreperform       discussion of performance issues    pcreperform       discussion of performance issues
105    pcreposix         the POSIX-compatible C API    pcreposix         the POSIX-compatible C API
106    pcreprecompile    details of saving and re-using precompiled patterns    pcreprecompile    details of saving and re-using precompiled patterns
# Line 124  documentation for details). In these cas Line 127  documentation for details). In these cas
127  However, the speed of execution is slower.  However, the speed of execution is slower.
128  </P>  </P>
129  <P>  <P>
130  All values in repeating quantifiers must be less than 65536. The maximum  All values in repeating quantifiers must be less than 65536.
 compiled length of subpattern with an explicit repeat count is 30000 bytes. The  
 maximum number of capturing subpatterns is 65535.  
131  </P>  </P>
132  <P>  <P>
133  There is no limit to the number of parenthesized subpatterns, but there can be  There is no limit to the number of parenthesized subpatterns, but there can be
# Line 228  must use Unicode property tests such as Line 229  must use Unicode property tests such as
229  low-valued characters.  low-valued characters.
230  </P>  </P>
231  <P>  <P>
232  9. Case-insensitive matching applies only to characters whose values are less  9. However, the Perl 5.10 horizontal and vertical whitespace matching escapes
233    (\h, \H, \v, and \V) do match all the appropriate Unicode characters.
234    </P>
235    <P>
236    10. Case-insensitive matching applies only to characters whose values are less
237  than 128, unless PCRE is built with Unicode property support. Even when Unicode  than 128, unless PCRE is built with Unicode property support. Even when Unicode
238  property support is available, PCRE still uses its own character tables when  property support is available, PCRE still uses its own character tables when
239  checking the case of low-valued characters, so as not to degrade performance.  checking the case of low-valued characters, so as not to degrade performance.
# Line 254  two digits 10, at the domain cam.ac.uk. Line 259  two digits 10, at the domain cam.ac.uk.
259  </P>  </P>
260  <br><a name="SEC6" href="#TOC1">REVISION</a><br>  <br><a name="SEC6" href="#TOC1">REVISION</a><br>
261  <P>  <P>
262  Last updated: 18 April 2007  Last updated: 06 August 2007
263  <br>  <br>
264  Copyright &copy; 1997-2007 University of Cambridge.  Copyright &copy; 1997-2007 University of Cambridge.
265  <br>  <br>

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