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revision 122 by ph10, Thu Mar 8 16:53:09 2007 UTC revision 123 by ph10, Mon Mar 12 15:19:06 2007 UTC
# Line 63  frame for each matched character. For a Line 63  frame for each matched character. For a
63  required. Consider now this rewritten pattern, which matches exactly the same  required. Consider now this rewritten pattern, which matches exactly the same
64  strings:  strings:
65  <pre>  <pre>
66    ([^&#60;]++|&#60;(?!inet))    ([^&#60;]++|&#60;(?!inet))+
67  </pre>  </pre>
68  This uses very much less stack, because runs of characters that do not contain  This uses very much less stack, because runs of characters that do not contain
69  "&#60;" are "swallowed" in one item inside the parentheses. Recursion happens only  "&#60;" are "swallowed" in one item inside the parentheses. Recursion happens only
# Line 139  Cambridge CB2 3QH, England. Line 139  Cambridge CB2 3QH, England.
139  REVISION  REVISION
140  </b><br>  </b><br>
141  <P>  <P>
142  Last updated: 06 March 2007  Last updated: 12 March 2007
143  <br>  <br>
144  Copyright &copy; 1997-2007 University of Cambridge.  Copyright &copy; 1997-2007 University of Cambridge.
145  <br>  <br>

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