vim-patch:7.4.2250

Problem:    Some error message cannot be translated.
Solution:   Enclose them in _() and N_(). (Dominique Pelle)

5b30291785

src/nvim/spell.c

@@ -2068,7 +2068,7 @@ char_u *did_set_spelllang(win_T *wp)
         // destroying the buffer we are using...
         if (!bufref_valid(&bufref)) {
           ret_msg =
-            (char_u *)"E797: SpellFileMissing autocommand deleted buffer";
+            (char_u *)N_("E797: SpellFileMissing autocommand deleted buffer");
           goto theend;
         }
       }