/[pcre]/code/trunk/doc/pcreperform.3
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revision 518 by ph10, Tue May 18 15:47:01 2010 UTC revision 535 by ph10, Thu Jun 3 19:18:24 2010 UTC
# Line 96  thousand characters whenever it needs a Line 96  thousand characters whenever it needs a
96  an alternative pattern that does not use character properties, it will probably  an alternative pattern that does not use character properties, it will probably
97  be faster.  be faster.
98  .P  .P
99  By default, the escape sequences \eb, \ed, \es, and \ew, and the POSIX  By default, the escape sequences \eb, \ed, \es, and \ew, and the POSIX
100  character classes such as [:alpha:] do not use Unicode properties, partly for  character classes such as [:alpha:] do not use Unicode properties, partly for
101  backwards compatibility, and partly for performance reasons. However, you can  backwards compatibility, and partly for performance reasons. However, you can
102  set PCRE_UCP if you want Unicode character properties to be used. This can  set PCRE_UCP if you want Unicode character properties to be used. This can
103  double the matching time for items such as \ed, when matched with  double the matching time for items such as \ed, when matched with
104  \fBpcre_exec()\fP; the performance loss is less with \fBpcre_dfa_exec()\fP, and  \fBpcre_exec()\fP; the performance loss is less with \fBpcre_dfa_exec()\fP, and
105  in both cases there is not much difference for \eb.  in both cases there is not much difference for \eb.
106  .P  .P
107  When a pattern begins with .* not in parentheses, or in parentheses that are  When a pattern begins with .* not in parentheses, or in parentheses that are

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