From 425df0dedb4e20be0bab9d028e6444a7339ea937 Mon Sep 17 00:00:00 2001
From: Zakarum <zaq.dev@icloud.com>
Date: Thu, 19 Feb 2026 15:17:01 +0100
Subject: [PATCH] Do not emit separator as before elements

---
 library/core/src/iter/adapters/intersperse.rs | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/library/core/src/iter/adapters/intersperse.rs b/library/core/src/iter/adapters/intersperse.rs
index bb94ed0a0a17..f33a67a98310 100644
--- a/library/core/src/iter/adapters/intersperse.rs
+++ b/library/core/src/iter/adapters/intersperse.rs
@@ -57,8 +57,9 @@ fn next(&mut self) -> Option<Self::Item> {
                 }
             }
         } else {
-            self.started = true;
-            self.iter.next()
+            let item = self.iter.next();
+            self.started = item.is_some();
+            item
         }
     }
 
@@ -173,8 +174,9 @@ fn next(&mut self) -> Option<Self::Item> {
                 }
             }
         } else {
-            self.started = true;
-            self.iter.next()
+            let item = self.iter.next();
+            self.started = item.is_some();
+            item
         }
     }