From 1edab81c26e57a08b35ffc88108e09b6844e7dcd Mon Sep 17 00:00:00 2001
From: Yan Pritzker <ypritzker@Yans-MacBook-Pro.local>
Date: Thu, 28 Apr 2016 15:22:53 -0500
Subject: [PATCH] Opens nerdtree to the root of your current project if not
 looking at a file

---
 vim/settings/yadr-keymap.vim | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/vim/settings/yadr-keymap.vim b/vim/settings/yadr-keymap.vim
index 526d3741..b6f0acf7 100644
--- a/vim/settings/yadr-keymap.vim
+++ b/vim/settings/yadr-keymap.vim
@@ -75,7 +75,15 @@ imap <C-a> <esc>wa
 
 " ==== NERD tree
 " Open the project tree and expose current file in the nerdtree with Ctrl-\
-nnoremap <silent> <C-\> :NERDTreeFind<CR>:vertical<CR>
+" " calls NERDTreeFind iff NERDTree is active, current window contains a modifiable file, and we're not in vimdiff
+function! OpenNerdTree()
+  if &modifiable && strlen(expand('%')) > 0 && !&diff
+    NERDTreeFind
+  else
+    NERDTreeToggle
+  endif
+endfunction
+nnoremap <silent> <C-\> :call OpenNerdTree()<CR>
 
 " ,q to toggle quickfix window (where you have stuff like Ag)
 " ,oq to open it back up (rare)