From 829e4332037df0e05d7f2766453a4de6e53ada67 Mon Sep 17 00:00:00 2001
From: Gergely Polonkai <gergely@polonkai.eu>
Date: Fri, 22 Feb 2019 07:08:38 +0100
Subject: [PATCH] Stop highlighting trailing whitespace in mail buffers

---
 configuration.org | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/configuration.org b/configuration.org
index 4a933b9..2ce3de4 100644
--- a/configuration.org
+++ b/configuration.org
@@ -2250,6 +2250,22 @@ Then configure ~real-auto-save-mode~
 
 ** Mailing with mu4e
 
+Due to my programming (and maybe a bit of OCD) needs, i set trailing whitespace to have a red
+background so it stands out *a lot*.  However, many emails contain a lot of trailing whitespace
+which makes them really hard to read in Emacs.
+
+The below snippet creates a trailing whitespace face specific to mu4e view buffers.  The
+accompanying function will be added to ~mu4e-view-mode-hook~.
+
+#+BEGIN_SRC emacs-lisp
+(copy-face 'trailing-whitespace 'trailing-whitespace-mu4e)
+(set-face-attribute 'trailing-whitespace-mu4e nil :background 'unspecified)
+
+(defun gpolonkai/mu4e-trailing-whitespace-fix ()
+  (set (make-local-variable 'face-remapping-alist)
+       '((trailing-whitespace trailing-whitespace-mu4e))))
+#+END_SRC
+
 #+BEGIN_SRC emacs-lisp
 (use-package mu4e
   :after helm
@@ -2293,6 +2309,8 @@ Then configure ~real-auto-save-mode~
   (mu4e-completing-read-function 'helm-comp-read)
   (mu4e-context-policy 'pick-first)
   (mu4e-confirm-quit nil)
+  :hook
+  (mu4e-view-mode . gpolonkai/mu4e-trailing-whitespace-fix)
   :bind
   (:map gpolonkai/pers-map
    ("m m" . mu4e)