8

I would like to have whitespace mode turned on for all buffer except for org-mode ones. It is easy to do this when emacs starts up, but since I use a persistant copy of emacs with emacs daemon mode I can't just do it that way.

I tried:

(require 'whitespace)
(setq whitespace-line-column 80)
(setq whitespace-style '(face lines-tail))
(global-whitespace-mode t)
(add-hook 'org-mode-hook
      (lambda ()
          (visual-line-mode 1)
          (auto-fill-mode -1)
          (setq whitespace-style nil)))

but as soon as I visit an org-mode buffer all of my future buffers don't have whitespace mode any more.

I thought of adding a hook to turn whitespace mode on for other major-modes but that seems like a bad way to go since I don't want to enumerate all the other possible modes.

I know that there is whitespace-mode along with global-whitespace-mode, but I'm not sure how I can use that to help here either.

Is there some other way to accomplish this that I'm not thinking of?

  • 3
    You could modify the global-whitespace-mode definition by adding (unless (eq major-mode 'org-mode) . . .). Or, you could enable it on a per major-mode basis instead of globally -- i.e., for each major-mode, use a hook and (whitespace-mode 1). Your idea may also work if you use (setq-local whitespace-style nil), but technically the mode is still active with just the guts / umph taken out. – lawlist Dec 9 '14 at 0:45
  • 1
    Unrelated: You should not quote your lambdas – Malabarba Dec 9 '14 at 13:48
  • Good point about the quoted lambda. Not sure how or why I ended up with it that way but I removed it from my .emacs Thanks. – jcv Dec 9 '14 at 19:23
15
(setq whitespace-global-modes '(not org-mode))

See C-hv whitespace-global-modes RET

  • That works perfect. Thanks. I knew that there had to be something simple that I was missing. – jcv Dec 9 '14 at 19:18
4

It is probably easier to turn off whitespace mode directly, using

 (whitespace-mode -1)

Also, whitespace-style is not a buffer-local variable, so it is modified for all other buffers as well. Try instead

(set (make-local-variable 'whitespace-style) nil)
  • I actually had initially turned whitespace-mode off directly rather than fussing with the whitespace-style var. That was just the current iteration of my attempts. I'm going to try what people suggested and then update this with what worked for me. – jcv Dec 9 '14 at 13:28
  • This actually works too, but as you commented yourself, directly turning whitespace mode off rather than dealing with the style is a better solution (which the answer above this does). – jcv Dec 9 '14 at 19:19

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