From e67b2847ea941366c18c221bb4188f35bb1dd4ec Mon Sep 17 00:00:00 2001
From: Michael Henry <drmikehenry@drmikehenry.com>
Date: Sat, 14 May 2016 15:56:48 -0400
Subject: [PATCH] Add the b:airline_whitespace_disabled feature.

If the per-buffer variable b:airline_whitespace_disabled is defined
and non-zero, whitespace checking will be disabled for that buffer.
---
 autoload/airline/extensions/whitespace.vim | 1 +
 doc/airline.txt                            | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/autoload/airline/extensions/whitespace.vim b/autoload/airline/extensions/whitespace.vim
index 7e13d472..db4a90c4 100644
--- a/autoload/airline/extensions/whitespace.vim
+++ b/autoload/airline/extensions/whitespace.vim
@@ -51,6 +51,7 @@ endfunction
 
 function! airline#extensions#whitespace#check()
   if &readonly || !&modifiable || !s:enabled || line('$') > s:max_lines
+          \ || get(b:, 'airline_whitespace_disabled', 0)
     return ''
   endif
 
diff --git a/doc/airline.txt b/doc/airline.txt
index 0053504c..6a409478 100644
--- a/doc/airline.txt
+++ b/doc/airline.txt
@@ -502,6 +502,15 @@ eclim <https://eclim.org>
   matters for mix-indent-file algorithm: >
   let airline#extensions#c_like_langs = ['c', 'cpp', 'cuda', 'javascript', 'ld', 'php']
 <
+* disable whitespace checking for an individual buffer >
+  " Checking is enabled by default because b:airline_whitespace_disabled
+  " is by default not defined:
+  unlet b:airline_whitespace_disabled
+
+  " If b:airline_whitespace_disabled is defined and is non-zero for a buffer,
+  " then whitespace checking will be disabled for that buffer; for example:
+  " let b:airline_whitespace_disabled = 1
+<
 -------------------------------------                      *airline-tabline*
 Note: If you're using the ctrlspace tabline only the option marked with (c)
 are supported!