DO NOT REPLY [Bug 42099] - ExpressionFilter backport

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http://issues.apache.org/bugzilla/show_bug.cgi?id=42099





------- Additional Comments From carnold@apache.org  2007-08-15 15:21 -------
Committed changes in rev 566357 that migrates the ExpressionFilter from Jakarta ORO to 
java.util.regex that was introduced in JDK 1.4.  The change should be transparent unless you used 
pattern delimiters in filters like:

MSG LIKE /.*foo/

instead of just writing:

MSG LIKE .*foo

If that level of compatibility is needed, identical bracketing characters could be detected and the rule 
could return true if either the straight pattern or the pattern with bracketing characters removed 
matched the field.  However, since ExpressionFilter was introduced in log4j 1.3, I don't feel the need for 
that level of compatibility unless it that was known to be used in the field.  Feedback appreciated.

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