/[pcre]/code/trunk/doc/pcreperform.3
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revision 75 by nigel, Sat Feb 24 21:40:37 2007 UTC revision 77 by nigel, Sat Feb 24 21:40:45 2007 UTC
# Line 35  this, PCRE has to retry the match starti Line 35  this, PCRE has to retry the match starti
35  .P  .P
36  If you are using such a pattern with subject strings that do not contain  If you are using such a pattern with subject strings that do not contain
37  newlines, the best performance is obtained by setting PCRE_DOTALL, or starting  newlines, the best performance is obtained by setting PCRE_DOTALL, or starting
38  the pattern with ^.* to indicate explicit anchoring. That saves PCRE from  the pattern with ^.* or ^.*? to indicate explicit anchoring. That saves PCRE
39  having to scan along the subject looking for a newline to restart at.  from having to scan along the subject looking for a newline to restart at.
40  .P  .P
41  Beware of patterns that contain nested indefinite repeats. These can take a  Beware of patterns that contain nested indefinite repeats. These can take a
42  long time to run when applied to a string that does not match. Consider the  long time to run when applied to a string that does not match. Consider the
# Line 71  In many cases, the solution to this kind Line 71  In many cases, the solution to this kind
71  atomic group or a possessive quantifier.  atomic group or a possessive quantifier.
72  .P  .P
73  .in 0  .in 0
74  Last updated: 09 September 2004  Last updated: 28 February 2005
75  .br  .br
76  Copyright (c) 1997-2004 University of Cambridge.  Copyright (c) 1997-2005 University of Cambridge.

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