From bf3cc5ad9d825c6db7e0717104279ec85538d8d9 Mon Sep 17 00:00:00 2001
From: Christian Brabandt <cb@256bit.org>
Date: Fri, 6 Apr 2018 01:51:00 +0200
Subject: [PATCH] NerdTree: make the statusline configurable

Use the g:NerdTreeStatusline variable for configuring the
NerdTree statusline in the NerdTree window

closes #1705
---
 autoload/airline/extensions.vim | 2 +-
 doc/airline.txt                 | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/autoload/airline/extensions.vim b/autoload/airline/extensions.vim
index 3b36ba9f..c4534c1d 100644
--- a/autoload/airline/extensions.vim
+++ b/autoload/airline/extensions.vim
@@ -22,7 +22,7 @@ endfunction
 let s:script_path = tolower(resolve(expand('<sfile>:p:h')))
 
 let s:filetype_overrides = {
-      \ 'nerdtree': [ 'NERD', '' ],
+      \ 'nerdtree': [ get(g:, 'NERDTreeStatusline', 'NERD'), '' ],
       \ 'gundo': [ 'Gundo', '' ],
       \ 'vimfiler': [ 'vimfiler', '%{vimfiler#get_status_string()}' ],
       \ 'minibufexpl': [ 'MiniBufExplorer', '' ],
diff --git a/doc/airline.txt b/doc/airline.txt
index 352b39ad..72f27139 100644
--- a/doc/airline.txt
+++ b/doc/airline.txt
@@ -403,6 +403,12 @@ vim-bufferline <https://github.com/bling/vim-bufferline>
 * determine whether bufferline will overwrite customization variables >
   let g:airline#extensions#bufferline#overwrite_variables = 1
 <
+-------------------------------------                   *airline-nerdtree*
+NerdTree <https://github.com/scrooloose/nerdtree.git>
+
+Airline displays the Nerdtree specific statusline (which can be configured using
+the |'NerdTreeStatusline'|variable.
+
 -------------------------------------                   *airline-fugitiveline*
 This extension hides the fugitive://**// part of the buffer names, to only
 show the file name as if it were in the current working tree.