Re: emacs kernel hacking: rm trailing ws

[Ed L Cashin <ecashin@uga.edu>]

On Tue, Jun 03, 2003 at 10:58:19AM -0400, Ed L Cashin wrote:
> After reading wli on the LKML mention that emacs users leave trailing
> whitespace in their files, I added this to my .emacs file.  
> 
> It makes sure that when I am working on kernel sources and I save a
> buffer, any trailing whitespace is removed.  

In case anybody else is using this, I found that for large
files the recursion is enough that emacs stops it, assuming
something's wrong.  This version doesn't use recursion and
so works on long files:

  (defun elc-delete-buffer-trailing-ws ()
    "get rid of trailing whitespace in all lines in current buffer"
    (interactive)
    (save-excursion
      (goto-char (point-min))
      (end-of-line)
      (delete-horizontal-space)
      (loop do (let ((inhibit-field-text-motion t))
		 (end-of-line 2)
		 (delete-horizontal-space))
	    while (/= (point) (point-max)))))
> 
>   (defun linux-c-mode ()
>     "C mode with adjusted defaults for use with the Linux kernel."
>     (interactive)
>     (add-hook 'local-write-file-hooks
> 	      'elc-delete-buffer-trailing-ws)
>     (c-mode)
>     (c-set-style "K&R")
>     (setq c-basic-offset 8))
> 
>   (add-to-list 'auto-mode-alist
> 	       '("/usr/src/linux.*/.*\\.[ch]$" . linux-c-mode))
>   (add-to-list 'auto-mode-alist
> 	       '(".*/kernel/linux-.*/.*\\.[ch]$" . linux-c-mode))

-- 
--Ed L Cashin            |   PGP public key:
  ecashin@uga.edu        |   http://noserose.net/e/pgp/
--
Kernelnewbies: Help each other learn about the Linux kernel.
Archive:       http://mail.nl.linux.org/kernelnewbies/
FAQ:           http://kernelnewbies.org/faq/