add optimisation \e* -> \e to FormalRegExpOptimize

alib2algo/src/regexp/simplify/RegExpOptimizeFormalPart.cxx

@@ -402,6 +402,7 @@ bool RegExpOptimize::A11( FormalRegExpElement * & n ) const {
 /**
   * optimization V1: \0* = \e
+  * optimization T1: \e* = \e
   * @param node FormalRegExpElement node
   * @return bool true if optimization applied else false
   */
@@ -414,6 +415,11 @@ bool RegExpOptimize::V1( FormalRegExpElement * & n ) const {
 		n = new FormalRegExpEpsilon( );
 		return true;
 	}
+	if( dynamic_cast<FormalRegExpEpsilon*>( node->getChild ( ).get() ) ) {
+		delete node;
+		n = new FormalRegExpEpsilon( );
+		return true;
+	}
 	return false;
 }