Forget about notes that are never saved

autoload.vim

@@ -383,6 +383,13 @@ function! xolox#notes#cache_del(filename) " {{{3
   endif
 endfunction
 
+function! xolox#notes#unload_from_cache() " {{{3
+  let bufname = expand('<afile>:p')
+  if !filereadable(bufname)
+    call xolox#notes#cache_del(bufname)
+  endif
+endfunction
+
 " Functions called by the file type plug-in and syntax script. {{{2
 
 function! xolox#notes#insert_quote(style) " {{{3

notes.vim

@@ -3,7 +3,7 @@
 " Last Change: December 24, 2010
 " URL: http://peterodding.com/code/vim/notes/
 " License: MIT
-" Version: 0.7.12
+" Version: 0.7.13
 
 " Support for automatic update using the GLVS plug-in.
 " GetLatestVimScripts: 3375 1 :AutoInstall: session.zip
@@ -60,6 +60,7 @@ augroup PluginNotes
   au BufReadCmd note:* nested call xolox#notes#shortcut()
   au SwapExists * call xolox#notes#swaphack()
   au WinEnter * if &ft == 'notes' | call xolox#notes#highlight_names() | endif
+  au BufUnload * if &ft == 'notes' | call xolox#notes#unload_from_cache() | endif
   call s:DefAutoCmd('BufWritePost', g:notes_directory, 'call xolox#notes#cleanup()')
 augroup END