Select: fix filterable error with number-typed value

packages/select/src/option.vue

@@ -114,7 +114,7 @@
 
       queryChange(query) {
         // query 里如果有正则中的特殊字符，需要先将这些字符转义
-        let parsedQuery = query.replace(/(\^|\(|\)|\[|\]|\$|\*|\+|\.|\?|\\|\{|\}|\|)/g, '\\$1');
+        let parsedQuery = String(query).replace(/(\^|\(|\)|\[|\]|\$|\*|\+|\.|\?|\\|\{|\}|\|)/g, '\\$1');
         this.visible = new RegExp(parsedQuery, 'i').test(this.currentLabel) || this.created;
         if (!this.visible) {
           this.parent.filteredOptionsCount--;

packages/select/src/select.vue

@@ -49,7 +49,7 @@
       :disabled="disabled"
       :readonly="!filterable || multiple"
       :validate-event="false"
-      @focus="toggleMenu"
+      @focus="handleFocus"
       @click="handleIconClick"
       @mousedown.native="handleMouseDown"
       @keyup.native="debouncedOnInputChange"
@@ -403,6 +403,10 @@
         });
       },
 
+      handleFocus() {
+        this.visible = true;
+      },
+
       handleIconClick(event) {
         if (this.iconClass.indexOf('circle-close') > -1) {
           this.deleteSelected(event);