--- embedaddon/pcre/doc/html/pcrelimits.html 2012/02/21 23:50:25 1.1.1.2 +++ embedaddon/pcre/doc/html/pcrelimits.html 2013/07/22 08:25:57 1.1.1.4 @@ -21,11 +21,12 @@ practice be relevant.

The maximum length of a compiled pattern is approximately 64K data units (bytes -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 -internal linkage size of 3 or 4 (when building the 16-bit library, 3 is rounded -up to 4). See the README file in the source distribution and the +for the 8-bit library, 32-bit units for the 32-bit library, and 32-bit units for +the 32-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 internal linkage size of 3 or 4 (when building the +16-bit or 32-bit library, 3 is rounded up to 4). See the README file in +the source distribution and the pcrebuild documentation for details. In these cases the limit is substantially larger. However, the speed of execution is slower. @@ -48,6 +49,10 @@ The maximum length of name for a named subpattern is 3 maximum number of named subpatterns is 10000.

+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 and 32-bit library. +

+

The maximum length of a subject string is the largest positive number that an integer variable can hold. However, when using the traditional matching function, PCRE uses recursion to handle subpatterns and indefinite repetition. @@ -72,7 +77,7 @@ Cambridge CB2 3QH, England. REVISION

-Last updated: 08 January 2012 +Last updated: 04 May 2012
Copyright © 1997-2012 University of Cambridge.