vim-patch:8.1.1270: cannot see current match position

Problem:    Cannot see current match position.
Solution:   Show "3/44" when using the "n" command and "S" is not in
            'shortmess'. (Christian Brabandt, closes vim/vim#4317)
9dfa313919

src/nvim/option_defs.h

@@ -173,6 +173,7 @@ enum {
   SHM_COMPLETIONMENU = 'c',  ///< Completion menu messages.
   SHM_RECORDING      = 'q',  ///< Short recording message.
   SHM_FILEINFO       = 'F',  ///< No file info messages.
+  SHM_SEARCHCOUNT    = 'S',  ///< Search sats: '[1/10]'
 };
 /// Represented by 'a' flag.
 #define SHM_ALL_ABBREVIATIONS ((char_u[]) { \