Nerdtree: Create file (m ↦ a) does not trigger BufNewFile

[aperezdc]

When using the “Create file” method (keys m ↦ a), it seems that NERDtree first creates an empty file, and then opens the empty file. This creates and opens the file in Vim _without_ triggering the BufNewFile event.

In particular, this breaks using the vim-templates plugin, please check the discussion on aperezdc/vim-template#17 for more details.

[PhilRunninger]

@aperezdc, the fs_menu.vim NERDTree plugin is meant to be analogous to the file operations one would do by right-clicking in Windows Explorer. The difference here is between creating a file on disk first, and creating an empty buffer directly in vim. The latter triggers BufNewFile; whereas, opening a file will fire the BufReadPost. I took a look at the code for vim-template's TLoad function. It looks like it's already doing a check to make sure the buffer is empty. What happens if you modify the autocmd to trigger on BufReadPost also, like this?

if !g:templates_no_autocmd
    augroup Templating
        autocmd!
        autocmd BufNewFile,BufReadPost * call <SID>TLoad()
    augroup END
endif

The other option, as you mentioned is to write your own function using NERDTree's API.