remap NERDTree Double Click to 'T'

nerdtree, vi, vim

Solution

1 Introduction

This works for NERD tree version 4.2.0.

2 Open directories and files in a new tab

If you would like to open directories and files in a new tab you can simply add the following line to your `~/.vimrc`.

let g:NERDTreeMapOpenInTabSilent = '<2-LeftMouse>'

3 Only open files in a new tab

If you only want to open files in a new tab you have to do something more sophisticated.

Add this function somewhere in `NERD_tree.vim`:

" opens a file in a new tab
" KeepWindowOpen - dont close the window even if NERDTreeQuitOnOpen is set
" stayCurrentTab: if 1 then vim will stay in the current tab, if 0 then vim
" will go to the tab where the new file is opened
function! s:openInTabAndCurrent(keepWindowOpen, stayCurrentTab)
    if getline(".") ==# s:tree_up_dir_line
        return s:upDir(0)
    endif

    let currentNode = s:TreeFileNode.GetSelected()
    if currentNode != {}
        let startToCur = strpart(getline(line(".")), 0, col("."))

        if currentNode.path.isDirectory
            call currentNode.activate(a:keepWindowOpen)
            return
        else
            call s:openInNewTab(a:stayCurrentTab)
            return
        endif
    endif
endfunction

and replace the line

nnoremap <silent> <buffer> <2-leftmouse> :call <SID>activateNode(0)<cr>

with:

nnoremap <silent> <buffer> <2-leftmouse> :call <SID>openInTabAndCurrent(0,1)<cr>

You can find this line in the function `s:bindMappings()` in the file `NERD_tree.vim`.

Problem

Original source