}
if (compressor.option("cascade")) {
if (self.car instanceof AST_Assign
- && !self.car.left.has_side_effects(compressor)
- && self.car.left.equivalent_to(self.cdr)) {
- return self.car;
+ && !self.car.left.has_side_effects(compressor)) {
+ if (self.car.left.equivalent_to(self.cdr)) {
+ return self.car;
+ }
+ if (self.cdr instanceof AST_Call
+ && self.cdr.expression.equivalent_to(self.car.left)) {
+ self.cdr.expression = self.car;
+ return self.cdr;
+ }
}
if (!self.car.has_side_effects(compressor)
&& !self.cdr.has_side_effects(compressor)