From bc71b80687ed6fe8c363e06c74ecc9bb4c916c96 Mon Sep 17 00:00:00 2001
From: Bert Peters <bert@bertptrs.nl>
Date: Fri, 9 Nov 2018 12:17:01 +0100
Subject: [PATCH] Make sure significant whitespace is not trimmed.

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

diff --git a/vim/.vim/vimrc b/vim/.vim/vimrc
index f41c797..2493aff 100644
--- a/vim/.vim/vimrc
+++ b/vim/.vim/vimrc
@@ -47,7 +47,15 @@ autocmd Filetype markdown setlocal textwidth=72 expandtab
 autocmd Filetype haskell setlocal expandtab
 
 " Remove trailing whitespace, always.
-autocmd BufWritePre * :%s/\s\+$//e
+fun! StripTrailingWhitespace()
+	" Skip files where the type is trailing space sensitive.
+	if &ft =~ 'diff'
+		return
+	endif
+	%s/\s\+$//e
+endfun
+
+autocmd BufWritePre * call StripTrailingWhitespace()
 
 " Keep backup files etc out of the way
 set undofile