this.replace = replace;
this.conversionPattern = pattern;
this.config = config;
PatternParser parser = createPatternParser(config);
formatters = parser.parse((pattern == null) ? DEFAULT_CONVERSION_PATTERN : pattern);
handlesExceptions = parser.handlesExceptions();
}
/**
* Set the <b>ConversionPattern</b> option. This is the string which
* controls formatting and consists of a mix of literal content and