use template string instead of +

1 files changed, 1 insertions, 1 deletions

diff --git a/script.js b/script.js
index dbece30..43740fa 100644
--- a/script.js
+++ b/script.js
@@ -122,7 +122,7 @@ function ready() {
         input.value.split(TOKEN_DELIM_RE).forEach(function (token) {
             if (!token || tryParse(token) || tryParse(token.toUpperCase()))
                 return;
-            warn.push("don't understand search term: " + token);
+            warn.push(`don't understand search term: ${token}`);
         });
 
         if (!state.subj && state.maybeSubj) {