Is there a way to map plugin specific keys to do multiple keys in Vim?

Question

I'd like to map NERDTree's tab opening key, 't', to do multiple things. Namely, I'd like it to open the tab then do the following list of commands: TlistToggle Ctrl W, Ctrl T, Ctrl W, Shift K, 30, Ctrl W, minus-sign. So that I open the taglist for the file, then horizontally split the list and the file, then resize the tag list.

I've tried the following:

nnoremap <t> NERDTree-t TlistToggle <C-W><C-T><C-W><S-K>30<C-W> -

but this doesn't seem to do anything.

Thoughts? Am I just completely doing this wrong. Is this even possible?

Answer 1

• The NERDTree mapping is not a global one, but only exists (and makes sense) in the plugin's sidebar. That makes it more difficult to override, but you can hook into NERDTree setting its 'filetype' , and then define a buffer-local mapping to override NERDTree's:

  :autocmd FileType nerdtree nnoremap t ...

• While normal mode commands (like the <Cw>... stuff) can indeed be concatenated, that's not true for the plugin invocations. You can find out NERDTree's via :nmap <buffer> t :

  :call nerdtree#invokeKeyMap("t")

The Taglist's is also an Ex command; you can combine both with | (written as <Bar> in mappings):

:call nerdtree#invokeKeyMap("t")<Bar>TlistToggle<CR>

So, something like this should work (I didn't test it):

:autocmd FileType nerdtree nnoremap <buffer> t :call nerdtree#invokeKeyMap("t")<Bar>TlistToggle<CR><C-W><C-T><C-W>K30<C-W>-

Answer 2

Here is the final solution I used to open a file in new tab from NERDTree and then split and resize the file & TlistToggle:

autocmd FileType nerdtree nnoremap <buffer> t :call nerdtree#ui_glue#invokeKeyMap("t")<CR> :TlistToggle<CR> <C-w><C-t><C-w>K :exe "resize " . ((winheight(0) + winheight(1)) * 3/20)<CR>

And this resizes the tag list that was opened in a horizontal tab by 15% of the total amount of lines in the whole window.