From ec007beac0f5e4db1b885f974443ff7619a7404d Mon Sep 17 00:00:00 2001
From: Mark Wooding <mdw@distorted.org.uk>
Date: Mon, 11 Feb 2008 14:56:05 +0000
Subject: [PATCH] emacs, dot-emacs: Provide auto-filling for m4 (and autoconf).

I'm surprised I hadn't done this already, actually...
---
 dot-emacs.el | 3 +++
 emacs        | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/dot-emacs.el b/dot-emacs.el
index 9fe9741..de720a0 100644
--- a/dot-emacs.el
+++ b/dot-emacs.el
@@ -1936,6 +1936,9 @@ strip numbers instead."
   (and mdw-auto-indent
        (indent-for-tab-command)))
 
+(defun mdw-setup-m4 ()
+  (mdw-standard-fill-prefix "\\([ \t]*\\(?:#+\\|\\<dnl\\>\\)[ \t]*\\)"))
+
 ;;;----- Text mode ----------------------------------------------------------
 
 (defun mdw-text-mode ()
diff --git a/emacs b/emacs
index 039f102..6d34822 100644
--- a/emacs
+++ b/emacs
@@ -493,6 +493,8 @@
 (add-hook 'latex-mode-hook 'mdw-fontify-tex t)
 
 (add-hook 'sh-mode-hook #'mdw-setup-sh-script-mode)
+(add-hook 'autoconf-mode-hook #'mdw-setup-m4)
+(add-hook 'm4-mode-hook #'mdw-setup-m4)
 
 (add-hook 'smalltalk-mode-hook 'mdw-fontify-smalltalk t)
 (add-hook 'smalltalk-mode-hook 'mdw-setup-smalltalk t)
-- 
2.11.0