/[pcre]/code/trunk/doc/pcrelimits.3
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revision 834 by ph10, Wed Nov 30 18:10:27 2011 UTC revision 835 by ph10, Wed Dec 28 16:10:09 2011 UTC
# Line 23  All values in repeating quantifiers must Line 23  All values in repeating quantifiers must
23  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
24  no more than 65535 capturing subpatterns.  no more than 65535 capturing subpatterns.
25  .P  .P
 There is a limit to the number of forward references to subsequent subpatterns  
 of around 200,000. Repeated forward references with fixed upper limits, for  
 example, (?2){0,100} when subpattern number 2 is to the right, are included in  
 the count. There is no limit to the number of backward references.  
 .P  
26  The maximum length of name for a named subpattern is 32 characters, and the  The maximum length of name for a named subpattern is 32 characters, and the
27  maximum number of named subpatterns is 10000.  maximum number of named subpatterns is 10000.
28  .P  .P
# Line 57  Cambridge CB2 3QH, England. Line 52  Cambridge CB2 3QH, England.
52  .rs  .rs
53  .sp  .sp
54  .nf  .nf
55  Last updated: 30 November 2011  Last updated: 24 August 2011
56  Copyright (c) 1997-2011 University of Cambridge.  Copyright (c) 1997-2011 University of Cambridge.
57  .fi  .fi
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