填表题小问题

src/views/exercise_questions/create/components/exercises/TableFillQuestion.vue

@@ -237,14 +237,14 @@ export default {
       if (arr.length === 0) {
         if (answerIndex !== -1) {
           this.data.answer.answer_list.splice(answerIndex, 1);
+          answerIndex = -1;
         }
-        return;
       }
       let isStart = /^##/.test(arr[0]); // 是否以 ## 开头
       if (isStart) {
         this.handleSpecialCharacterStart(arr, answerIndex, newValue.mark, i, j);
       } else {
-        let str = arr.join().replace(/<span class="rich-fill".*?>(.*?)<\/span>|([_]{3,})/gi, '###$1$2###');
+        let str = arr.join().replace(/<span class="rich-fill".*?>(.*?)<\/span>/gi, '###$1$2###');
         this.handleFill(str, answerIndex, newValue.mark, i, j);
       }
     },