leader shortcut to append modeline after last line in buffer

.vimrc

@@ -156,6 +156,18 @@ endfunction
 inoremap <tab> <c-r>=Smart_TabComplete()<CR>
 
 
+" Append modeline after last line in buffer.
+" Use substitute() instead of printf() to handle '%%s' modeline in LaTeX
+" files.
+function! AppendModeline()
+  let l:modeline = printf(" vim: set ts=%d sw=%d tw=%d :",
+        \ &tabstop, &shiftwidth, &textwidth)
+  let l:modeline = substitute(&commentstring, "%s", l:modeline, "")
+  call append(line("$"), l:modeline)
+endfunction
+nnoremap <silent> <Leader>ml :call AppendModeline()<CR>
+
+
 "switch spellcheck languages
 let g:myLang = 0
 let g:myLangList = [ "nospell", "fr_fr", "en_gb" ]