--- embedaddon/pcre/doc/pcrelimits.3 2012/02/21 23:05:52 1.1 +++ embedaddon/pcre/doc/pcrelimits.3 2012/02/21 23:50:25 1.1.1.2 @@ -7,15 +7,16 @@ PCRE - Perl-compatible regular expressions There are some size limitations in PCRE but it is hoped that they will never in practice be relevant. .P -The maximum length of a compiled pattern is 65539 (sic) bytes if PCRE is -compiled with the default internal linkage size of 2. If you want to process +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 (see the \fBREADME\fP file in the source -distribution and the +internal linkage size of 3 or 4 (when building the 16-bit library, 3 is rounded +up to 4). See the \fBREADME\fP file in the source distribution and the .\" HREF \fBpcrebuild\fP .\" -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. .P All values in repeating quantifiers must be less than 65536. @@ -57,6 +58,6 @@ Cambridge CB2 3QH, England. .rs .sp .nf -Last updated: 30 November 2011 -Copyright (c) 1997-2011 University of Cambridge. +Last updated: 08 January 2012 +Copyright (c) 1997-2012 University of Cambridge. .fi