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version 1.1, 2012/02/21 23:05:52	version 1.1.1.3, 2012/10/09 09:19:18
Line 20 There are some size limitations in PCRE but it is hope	Line 20 There are some size limitations in PCRE but it is hope
practice be relevant.	practice be relevant.
</P>	</P>
<P>	<P>
The maximum length of a compiled pattern is 65539 (sic) bytes if PCRE is	The maximum length of a compiled pattern is approximately 64K data units (bytes
compiled with the default internal linkage size of 2. If you want to process	for the 8-bit library, 16-bit units for the 16-bit library) if PCRE is compiled
	with the default internal linkage size of 2 bytes. If you want to process
regular expressions that are truly enormous, you can compile PCRE with an	regular expressions that are truly enormous, you can compile PCRE with an
internal linkage size of 3 or 4 (see the <b>README</b> file in the source	internal linkage size of 3 or 4 (when building the 16-bit library, 3 is rounded
distribution and the	up to 4). See the <b>README</b> file in the source distribution and the
<a href="pcrebuild.html"><b>pcrebuild</b></a>	<a href="pcrebuild.html"><b>pcrebuild</b></a>
documentation for details). In these cases the limit is substantially larger.	documentation for details. In these cases the limit is substantially larger.
However, the speed of execution is slower.	However, the speed of execution is slower.
</P>	</P>
<P>	<P>
Line 47 The maximum length of name for a named subpattern is 3	Line 48 The maximum length of name for a named subpattern is 3
maximum number of named subpatterns is 10000.	maximum number of named subpatterns is 10000.
</P>	</P>
<P>	<P>
	The maximum length of a name in a (MARK), (PRUNE), (SKIP), or (THEN) verb
	is 255 for the 8-bit library and 65535 for the 16-bit library.
	</P>
	<P>
The maximum length of a subject string is the largest positive number that an	The maximum length of a subject string is the largest positive number that an
integer variable can hold. However, when using the traditional matching	integer variable can hold. However, when using the traditional matching
function, PCRE uses recursion to handle subpatterns and indefinite repetition.	function, PCRE uses recursion to handle subpatterns and indefinite repetition.
Line 71 Cambridge CB2 3QH, England.	Line 76 Cambridge CB2 3QH, England.
REVISION	REVISION
</b><br>	</b><br>
<P>	<P>
Last updated: 30 November 2011	Last updated: 04 May 2012
<br>	<br>
Copyright © 1997-2011 University of Cambridge.	Copyright © 1997-2012 University of Cambridge.
<br>	<br>
<p>	<p>
Return to the <a href="index.html">PCRE index page</a>.	Return to the <a href="index.html">PCRE index page</a>.

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