I broke up with neovim....vim is my best friend now

dot_vim/plugged/vim-vsnip-integ/autoload/vsnip_integ/integration/mucomplete.vim

@@ -0,0 +1,31 @@
+"
+" vsnip_integ#integration#mucomplete#attach
+"
+function! vsnip_integ#integration#mucomplete#attach() abort
+  call mucomplete#add_user_mapping('vsnip', "\<C-r>=vsnip_integ#integration#mucomplete#complete()\<CR>")
+endfunction
+
+"
+" vsnip_integ#integration#mucomplete#complete
+"
+function! vsnip_integ#integration#mucomplete#complete() abort
+  let l:before_line = getline('.')
+  let l:idx = min([strlen(l:before_line), col('.') - 2])
+  let l:idx = max([l:idx, 0])
+  let l:before_line =  l:before_line[0 : l:idx]
+  let l:keyword = matchstr(l:before_line, '\k\+$')
+
+  if l:keyword == ''
+    return ''
+  endif
+
+  let l:candidates = vsnip#get_complete_items(bufnr('%'))
+  let l:match = map(l:candidates, { _, val -> (l:keyword == val["word"][0:strlen(l:keyword)-1]) ? val : ''})
+  
+  if !empty(l:candidates)
+    call complete(col('.') - strlen(l:keyword), l:match)
+  endif
+
+  return ''
+endfunction
+