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revision 1334 by ph10, Fri Mar 22 16:13:13 2013 UTC revision 1335 by ph10, Tue May 28 09:13:59 2013 UTC
# Line 64  it is processed as if it were Line 64  it is processed as if it were
64  <br>  <br>
65  <br>  <br>
66  Notice that there is a callout before and after each parenthesis and  Notice that there is a callout before and after each parenthesis and
67  alternation bar. If the pattern contains a conditional group whose condition is  alternation bar. If the pattern contains a conditional group whose condition is
68  an assertion, an automatic callout is inserted immediately before the  an assertion, an automatic callout is inserted immediately before the
69  condition. Such a callout may also be inserted explicitly, for example:  condition. Such a callout may also be inserted explicitly, for example:
70  <pre>  <pre>
71    (?(?C9)(?=a)ab|de)    (?(?C9)(?=a)ab|de)
72  </pre>  </pre>
73  This applies only to assertion conditions (because they are themselves  This applies only to assertion conditions (because they are themselves
74  independent groups).  independent groups).
75  </P>  </P>
76  <P>  <P>
77  Automatic callouts can be used for tracking the progress of pattern matching.  Automatic callouts can be used for tracking the progress of pattern matching.

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