diff --git a/crates/bibclean/src/author.rs b/crates/bibclean/src/author.rs
index 91286c1..ce83f13 100644
--- a/crates/bibclean/src/author.rs
+++ b/crates/bibclean/src/author.rs
@@ -375,7 +375,11 @@ fn normalise_isbn(raw: &str) -> Option<String> {
 /// Whether a character is a digit, by Python's definition — which counts the
 /// superscripts and the circled numbers that a decimal test does not.
 fn is_digit(c: char) -> bool {
-    c.to_digit(10).is_some()
+    // Not `is_ascii_digit`: a decimal digit in any script is a digit, and a
+    // name carrying one is not a name whichever script it is written in.
+    #[allow(clippy::is_digit_ascii_radix)]
+    let decimal = c.is_digit(10);
+    decimal
         || DIGIT_RANGES
             .iter()
             .any(|(from, to)| (*from..=*to).contains(&c))
diff --git a/parity/tests/author.rs b/parity/tests/author.rs
index 015b3bd..63b6466 100644
--- a/parity/tests/author.rs
+++ b/parity/tests/author.rs
@@ -51,19 +51,19 @@ fn every_author_judgement_matches_python() {
         };
 
         let ours = list(&bibclean::author::from_front_matter(front.unwrap_or("")));
-        if &ours != &theirs["front_matter"] {
+        if ours != theirs["front_matter"] {
             differs("front_matter", ours.to_string(), &theirs["front_matter"]);
         }
 
         let ours = list(&bibclean::author::from_title(title));
-        if &ours != &theirs["title"] {
+        if ours != theirs["title"] {
             differs("title", ours.to_string(), &theirs["title"]);
         }
 
         let ours = bibclean::author::best(title, front)
             .as_ref()
             .map_or(Value::Null, as_value);
-        if &ours != &theirs["best"] {
+        if ours != theirs["best"] {
             differs("best", ours.to_string(), &theirs["best"]);
         }