From e6c5335d43bfbf2fffa3d3c44cde404c970e5ee6 Mon Sep 17 00:00:00 2001
From: John Turner <jturner.usa@gmail.com>
Date: Fri, 14 Nov 2025 20:04:27 +0000
Subject: disallow trailing delimiter in SeparatedBy combinator

---
 src/lib.rs | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/lib.rs b/src/lib.rs
index acf2dcc..7c1bbcc 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -262,7 +262,10 @@ where
             };
 
             let rest = match self.delimiter.check(rest.clone()) {
-                Ok((rest, _)) => rest,
+                Ok((rest, _)) => match self.parser.check(rest.clone()) {
+                    Ok(_) => rest,
+                    Err(_) => return Some(Err(EM::bind(|| rest))),
+                },
                 _ => rest,
             };
 
@@ -1029,6 +1032,20 @@ mod test {
             .unwrap();
     }
 
+    #[test]
+    fn test_separated_list_with_trailing_delimiter() {
+        let input = "1.0.";
+        let it = InputIter::new(input);
+
+        assert!(
+            numeric1()
+                .separated_by(tag("."))
+                .at_least(1)
+                .check_finished(it)
+                .is_err()
+        );
+    }
+
     #[test]
     fn test_find() {
         let input = "hello world";
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