diff --git a/fish-rust/src/wchar_ext.rs b/fish-rust/src/wchar_ext.rs
index 7f7633f1c..f50ae8a45 100644
--- a/fish-rust/src/wchar_ext.rs
+++ b/fish-rust/src/wchar_ext.rs
@@ -1,3 +1,5 @@
+use std::{iter, slice};
+
 use crate::wchar::{wstr, WString};
 use widestring::utfstr::CharsUtf32;
 
@@ -102,6 +104,14 @@ impl<'a> IntoCharIter for &'a str {
     }
 }
 
+impl<'a> IntoCharIter for &'a [char] {
+    type Iter = iter::Copied<slice::Iter<'a, char>>;
+
+    fn chars(self) -> Self::Iter {
+        self.iter().copied()
+    }
+}
+
 impl<'a> IntoCharIter for &'a wstr {
     type Iter = CharsUtf32<'a>;
     fn chars(self) -> Self::Iter {