How to get group name of highlighting under cursor in vim?

Question

I usually customize existing colorscheme to meet my needs.

If I could get the syntax group name under cursor, it would help me a lot, just like Firebu

Answer 1

Try this:

" diagnostics {{{
if has('balloon_eval')
    nnoremap            : setl beval!
    set bexpr=InspectSynHL()
endif
fun! InspectSynHL()
    let l:synNames = []
    let l:idx = 0
    for id in synstack(v:beval_lnum, v:beval_col)
        call add(l:synNames, printf('%s%s', repeat(' ', idx), synIDattr(id, 'name')))
        let l:idx+=1
    endfor
    return join(l:synNames, "\n")
endfun
"}}}