foo.vim

"put this in your vimrc
"note: I'll probably add :NERDTreeSecondary after work tonight

autocmd vimenter * call s:CheckToSplitTwoTrees()
function! s:CheckToSplitTwoTrees()
    if argc() != 1 || !isdirectory(argv(0))
        return
    endif

    vsplit

    "there should really be a better way to do this... e.g. :NERDTreeSecondary
    call nerdtree#checkForBrowse(argv(0))
endfunction

Edit: Something doesn't work correctly. I'm used to navigating to a file in the tree view in the left pane and hitting o to make the file open in the right pane. With this vimscript, when I hit o in the left pane, the file opens in the left pane.

---

Nice! I'm sick of typing:

$ mvim .

then

:NERDTree

How about having the cursor start in the right hand window? My setup is tree view on left, and file on right; so if the cursor starts in the right hand window, I can navigate to a file and hit "o"--and not have to do any window switching.

Ha! Here it is: after the line vsplit add wincmd l:

autocmd vimenter * call s:CheckToSplitTwoTrees()
function! s:CheckToSplitTwoTrees()
    if argc() != 1 || !isdirectory(argv(0))
        return
    endif

    vsplit
    wincmd l

    "there should really be a better way to do this... e.g. :NERDTreeSecondary
    call nerdtree#checkForBrowse(argv(0))
endfunction