scala
diff --git a/‎library/src/scala/collection/IterableOnce.scala
Lines changed: 1 addition & 1 deletion b/‎library/src/scala/collection/IterableOnce.scala
Lines changed: 1 addition & 1 deletion
@@ -1372,7 +1372,7 @@ trait IterableOnceOps[+A, +CC[_], +C] extends Any { this: IterableOnce[A] =>
     if (it.hasNext) {
       jsb.append(it.next())
       while (it.hasNext) {
-        jsb.append(sep)
+        if (sep.length != 0) jsb.append(sep)
         jsb.append(it.next())
       }
     }
Original file line number	Diff line number	Diff line change
`@@ -1372,7 +1372,7 @@ trait IterableOnceOps[+A, +CC[_], +C] extends Any { this: IterableOnce[A] =>`
`1372`	`1372`	`if (it.hasNext) {`
`1373`	`1373`	`jsb.append(it.next())`
`1374`	`1374`	`while (it.hasNext) {`
`1375`		`- jsb.append(sep)`
	`1375`	`+ if (sep.length != 0) jsb.append(sep)`
`1376`	`1376`	`jsb.append(it.next())`
`1377`	`1377`	`}`
`1378`	`1378`	`}`