Combine into one format string with escaped format placeholder

core/src/main/java/hudson/Functions.java

@@ -117,6 +117,7 @@ import java.net.URLEncoder;
 import java.nio.charset.StandardCharsets;
 import java.text.DateFormat;
 import java.text.DecimalFormat;
+import java.text.MessageFormat;
 import java.time.ZoneId;
 import java.time.ZonedDateTime;
 import java.time.format.DateTimeFormatter;
@@ -2505,4 +2506,9 @@ public class Functions {
 
         return keyboardShortcut.replace("CMD", useCmdKey ? "⌘" : "CTRL");
     }
+
+    @Restricted(NoExternalUse.class)
+    public static String formatMessage(String format, Object args) {
+        return MessageFormat.format(format, args);
+    }
 }