fix：修正回车确认后残留提示的信息。

filecomplete.cpp

@@ -509,7 +509,7 @@ char* fc_readline()
     SetConsoleCursorInfo(hConsole, &cursorInfo);
 #endif
 
-    while (1) {
+    auto refresh_show = [&]() {
         word.clear();
         clear_line();
         // Print current buffer
@@ -533,6 +533,11 @@ char* fc_readline()
         }
 #endif
         set_cursor_x(cur_pos + 1);
+    };
+
+    while (1) {
+
+        refresh_show();
         need_predic = true;
 
         // Read character from console
@@ -555,6 +560,9 @@ char* fc_readline()
             cursorInfo.bVisible = FALSE;
             SetConsoleCursorInfo(hConsole, &cursorInfo);
 #endif
+            // 这里还需要清除预测显示
+            str_predict.clear();
+            refresh_show();
             append_his(main_buf);
             return main_buf;
 #if defined(OS_WINDOWS)