Color save, async, set, end with multi key, COBOL key demo | 颜色保存，异步，多 key 结束，COBOL 关键字示例

src/main/java/io/github/linwancen/plugin/show/ext/LineExt.java

@@ -70,6 +70,11 @@ public class LineExt {
             }
             appendKeyDoc(sb, matcher, keyMap);
         }
+        int before;
+        do {
+            before = sb.length();
+            appendKeyDoc(sb, matcher, keyMap);
+        } while (sb.length() != before);
         if (!haveDoc) {
             return null;
         }