- Changed :NeoSnippetEdit behavior.

autoload/neosnippet.vim

@@ -241,8 +241,17 @@ function! neosnippet#edit_snippets(args)"{{{
   endif
 
   " Edit snippet file.
-  let filename = (options.runtime ? s:runtime_dir[0] : s:snippets_dir[-1])
-        \ .'/'.filetype.'.snip'
+  let snippet_dir = (options.runtime ? s:runtime_dir[0] : s:snippets_dir[-1])
+  let filename = snippet_dir .'/'.filetype
+
+  if isdirectory(filename)
+    " Edit in snippet directory.
+    let filename .= '/'.filetype
+  endif
+
+  if filename !~ '\.snip*$'
+    let filename .= '.snip'
+  endif
 
   if options.split
     " Split window.

doc/neosnippet.txt

@@ -71,6 +71,9 @@ COMMANDS 					*neosnippet-commands*
 		Opens [filetype] snippets to edit.  It automatically selects
 		current buffer's filetype unless you specify [filetype].
 		
+		If [filetype] snippets has a directory, it automatically edit
+		"[filetype].snip" in [filetype] subdirectory.
+
 		If [filetype] snippet file doesn't exist, it creates one
 		automatically.
 
@@ -391,6 +394,7 @@ CHANGELOG			*neosnippet-changelog*
 
 2012-10-04
 - Refactored snippets filter.
+- Changed :NeoSnippetEdit behavior.
 
 2012-10-01
 - Deleted neosnippet#force_expandable().