convert entire line without selection

plugin/banana.vim

@@ -24,21 +24,24 @@ python3 sys.path.append(vim.eval('expand("<sfile>:h")'))
 
 fun! s:Enc()
 	python3 << EOL
-from banana import text2banana,get_selected_text,replace_selected_text
+from banana import text2banana,get_selected_text,replace_selected_text,enc_line
 
 try:
     replace_selected_text(text2banana(get_selected_text()))
-except:
+except TypeError:
-    print("banana: select the text you want to convert")
+    enc_line()
 
 EOL
 endfun!
 
 fun! s:Dec()
 	python3 << EOL
-from banana import text2dec,get_selected_text,replace_selected_text
+from banana import text2dec,get_selected_text,replace_selected_text,dec_line
 
+try:
     replace_selected_text(text2dec(get_selected_text()))
+except TypeError:
+    dec_line()
 
 EOL
 endfun!