Fix autocmd not firing for initial buffer

autoload/neosnippet.vim

@@ -73,27 +73,24 @@ function! s:initialize()"{{{
   endfor
   call map(s:snippets_dir, 'substitute(v:val, "[\\\\/]$", "", "")')
 
-  if has('conceal')
-    " Supported conceal features.
-    augroup neosnippet
-      autocmd BufNewFile,BufRead,ColorScheme *
-            \ syn match   neosnippetExpandSnippets
-            \ '<`\d\+:\|`>\|<{\d\+:\|}>' conceal
-      autocmd BufNewFile,BufRead,ColorScheme *
-            \ execute 'syn match   neosnippetExpandSnippets'
-            \  '''<`\d\+\\\@<!`>\|<{\d\+\\\@<!}>\|'
-            \ .s:get_mirror_placeholder_marker_pattern()."'"
-            \ 'conceal cchar=$'
-    augroup END
-  else
   augroup neosnippet
     autocmd BufNewFile,BufRead,ColorScheme *
           \ execute 'syn match neosnippetExpandSnippets'
           \  "'".s:get_placeholder_marker_pattern(). '\|'
           \ .s:get_sync_placeholder_marker_pattern().'\|'
           \ .s:get_mirror_placeholder_marker_pattern()."'"
-    augroup END
+          \ 'containedin=ALL'
+    if has('conceal')
+      autocmd BufNewFile,BufRead,ColorScheme *
+            \ syn region neosnippetConcealExpandSnippets
+            \ matchgroup=neosnippetExpandSnippets
+            \ start='<`\d\+:\=\|<{\d\+:\=\|<|'
+            \ end='`>\|}>\||>'
+            \ containedin=ALL
+            \ concealends
     endif
+  augroup END
+  doautocmd neosnippet BufRead
 
   hi def link neosnippetExpandSnippets Special