Move register_oneshot_snippet function

autoload/neosnippet/mappings.vim

@@ -85,6 +85,33 @@ function! neosnippet#mappings#_clear_select_mode_mappings() "{{{
   snoremap <C-h>    a<BS>
 endfunction"}}}
 
+function! neosnippet#mappings#_register_oneshot_snippet() "{{{
+  let trigger = input('Please input snippet trigger: ', 'oneshot')
+  if trigger == ''
+    return
+  endif
+
+  let selected_text = substitute(
+        \ neosnippet#get_selected_text(visualmode(), 1), '\n$', '', '')
+  call neosnippet#delete_selected_text(visualmode(), 1)
+
+  let base_indent = matchstr(selected_text, '^\s*')
+
+  " Delete base_indent.
+  let selected_text = substitute(selected_text,
+        \'^' . base_indent, '', 'g')
+
+  let neosnippet = neosnippet#get_current_neosnippet()
+  let options = neosnippet#parser#_initialize_snippet_options()
+  let options.word = 1
+
+  let neosnippet.snippets[trigger] = neosnippet#parser#_initialize_snippet(
+        \ { 'name' : trigger, 'word' : selected_text, 'options' : options },
+        \ '', 0, '', trigger)
+
+  echo 'Registered trigger : ' . trigger
+endfunction"}}}
+
 function! s:snippets_expand(cur_text, col) "{{{
   let cur_word = neosnippet#get_cursor_snippet(
         \ neosnippet#get_snippets(),