diff --git a/dotfiles/.vim/online_fxreader_pr34_vim/beta.py b/dotfiles/.vim/online_fxreader_pr34_vim/beta.py
index 604be1f..2e046e4 100644
--- a/dotfiles/.vim/online_fxreader_pr34_vim/beta.py
+++ b/dotfiles/.vim/online_fxreader_pr34_vim/beta.py
@@ -233,12 +233,18 @@ augroup END
 			try:
 				key_str = key.decode('utf-8')
 			except:
-				return 0
+				return vim.Function('popup_filter_menu')(
+					self._popup_id, key
+				)
+				# return 0
 
 			if not key_str.isprintable():
-				return 0
-			else:
+				return vim.Function('popup_filter_menu')(
+					self._popup_id, key
+				)
 
+				# return 0
+			else:
 				with self._lock:
 					self._set_filter_pattern(self._filter_pattern + key_str)