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Re: How to exclude a major mode from a hook
From: |
Fabrice Niessen |
Subject: |
Re: How to exclude a major mode from a hook |
Date: |
Wed, 11 Feb 2015 10:50:11 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.4 (windows-nt) |
Cecil Westerhof wrote:
> I had the following in my .emacs:
> (add-hook 'before-save-hook 'delete-trailing-whitespace)
>
> But I also use Gnus and a signature starts with '-- ' and now the
> space is deleted and it is not a signature anymore.
>
> So I rewrote it to:
> (add-hook 'before-save-hook (lambda () (when (not (string= major-mode
> "message-mode"))
> 'delete-trailing-whitespace)))
I do have:
--8<---------------cut here---------------start------------->8---
;; Nuke all trailing whitespaces in the buffer.
(add-hook 'before-save-hook
(lambda () ; Except for ...
(unless (or (eq major-mode 'message-mode)
; ... where "-- " is the signature
; separator (for when using emacsclient
; to compose emails and doing C-x #).
(eq major-mode 'diff-mode))
; ... where the patch file can't be
; changed!
(delete-trailing-whitespace))))
--8<---------------cut here---------------end--------------->8---
Best regards,
Fabrice
--
Fabrice Niessen
Leuven, Belgium
http://www.pirilampo.org/