add a :Tsearch command to open a :cwindow like list of matching tags

tagsearch.vim

command -nargs=1 -complete=tag Tsearch call <SID>Tsearch(<f-args>)

"search for tags using the given search string, list them in a new window,
"user can hit enter on a tag to jump to it
function! s:Tsearch(str)
    botright 10 new
    let b:taglist = taglist(a:str)

    for i in range(0, len(b:taglist)-1)
        let next = b:taglist[i]

        let text = next['name'] . '.....' . next['filename']
        call setline(i+1, text)
    endfor

    syn match function #^.*\.\.\.\.\.#he=e-5
    nnoremap <cr> :call <SID>JumpToTag()<cr>
    set buftype=nofile
endfunction

"jump to the tag under the cursor
function! s:JumpToTag()
    let tag = b:taglist[line(".")-1]
    bdelete!
    exec 'edit ' . tag['filename']
    exec 'silent' . tag['cmd']
endfunction