Add a handy func for vim syntax stack

vimrc

@@ -68,3 +68,11 @@ packadd! dracula
 colorscheme dracula
 
 hi Comment cterm=NONE ctermfg=DarkRed gui=NONE guifg=red2
+
+nmap <leader>sp :call <SID>SynStack()<CR>
+function! <SID>SynStack()
+  if !exists("*synstack")
+    return
+  endif
+  echo map(synstack(line('.'), col('.')), 'synIDattr(v:val, "name")')
+endfunc