feat(calc): strip underscore digit separators

crates/plugins/plugin-calc/src/lib.rs

@@ -15,6 +15,10 @@ impl Default for CalcPlugin {
     }
 }
 
+fn preprocess(expr: &str) -> String {
+    expr.replace('_', "")
+}
+
 fn should_eval(query: &str) -> bool {
     query
         .chars()
@@ -34,7 +38,9 @@ impl Plugin for CalcPlugin {
         if !should_eval(query) {
             return vec![];
         }
-        let expr = query.strip_prefix('=').unwrap_or(query);
+        let raw = query.strip_prefix('=').unwrap_or(query);
+        let expr_owned = preprocess(raw);
+        let expr = expr_owned.as_str();
         match evalexpr::eval_number(expr) {
             Ok(n) if n.is_finite() => {
                 let value_str = if n.fract() == 0.0 {
@@ -43,7 +49,6 @@ impl Plugin for CalcPlugin {
                     format!("{n}")
                 };
                 let display = format!("= {value_str}");
-                let expr_owned = expr.to_string();
                 vec![SearchResult {
                     id: ResultId::new("calc-result"),
                     title: ResultTitle::new(display),
@@ -81,4 +86,11 @@ mod tests {
         let p = CalcPlugin::new();
         assert!(p.search("1/0").await.is_empty());
     }
+
+    #[tokio::test]
+    async fn calc_underscore_separator() {
+        let p = CalcPlugin::new();
+        let results = p.search("1_000 * 2").await;
+        assert_eq!(results[0].title.as_str(), "= 2000");
+    }
 }