/wro4j-core/src/main/java/ro/isdc/wro/model/resource/processor/support/JawrCssMinifier.java
final Matcher rulesmatcher = STRING_PLACE_HOLDER_PATTERN.matcher( compressed) ;
final Matcher rulesmatcher = RULES_PATTERN.matcher ( compressed ) ;
String matchCallback(final Matcher matcher) { final String match = matcher.group(); strings.add(match); return STRING_PLACEHOLDER; } }.processWithMatcher(stringMatcher); <extra_id_0> compressed = new MatcherProcessorCallback() { @Override String matchCallback(final Matcher matcher) { return matcher.group(1) + matcher.group(2); } }.processWithMatcher(rulesmatcher);