Remove Lookahead1::cursor method
diff --git a/src/punctuated.rs b/src/punctuated.rs
index 19fd6c6..fe29afb 100644
--- a/src/punctuated.rs
+++ b/src/punctuated.rs
@@ -704,7 +704,7 @@
         loop {
             let value = parser(input)?;
             punctuated.push_value(value);
-            if !P::peek(&input.lookahead1()) {
+            if !P::peek(input.cursor()) {
                 break;
             }
             let punct = input.parse()?;