Re: Setting Group Ownership

[Tim Haynes]

"CarlC" <carlc@snowbd.com> writes:

> When a file is saved I would like to set the file's group owner to an
> environment variable. This is on a Linux box. I know that I can use
> after-save-hook. I assume that I would have to call a shell command to do
> this. I don't know how access an environment variable and call the chgrp
> command from emacs. Any help would be appreciated.

Consider:

M-: (shell-command (concat "echo " (getenv "HOME")))

change a couple of things, you might have got what you want? :8)

~Tim
-- 
A spark of life                             |piglet@stirfried.vegetable.org.uk
On a wire from heaven                       |http://spodzone.org.uk/
>From help-gnu-emacs-bounces@gnu.org  Tue Dec 10 10:05:11 2002
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Subject: Re: How to use set-fill-column as a hook?
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Adam <a24061@void.yahoo.void.com> writes:

> I have the following in ~/.emacs:
> 
> (add-hook 'text-mode-hook 'turn-on-auto-fill)
> (add-hook 'latex-mode-hook 'turn-on-auto-fill)
> 
> I now want to set the fill-column differently for LaTeX files.
> 
> This doesn't do anything (I verified with C-h v that the value of 
> fill-column is 70, the default):
> (add-hook 'latex-mode-hook '('set-fill-column 100))
> 
> This gives an error when starting emacs:
> (add-hook 'latex-mode-hook ('set-fill-column 100))
> 
> What's the correct syntax?

(add-hook 'latex-mode-hook (lambda() (set-fill-column 100)))

> Also, once I've done that, can I set it differently for mail-mode and 
> text-mode?

Sure, just the same like above.  Of course, latex-mode also runs
text-mode-hook, but it might run it before latex-mode-hook.

-- 
David Kastrup, Kriemhildstr. 15, 44793 Bochum
>From help-gnu-emacs-bounces@gnu.org  Tue Dec 10 10:30:14 2002
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Subject: Re: How to use set-fill-column as a hook?
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On Tuesday 10 December 2002 14:59, David Kastrup wrote:

>> What's the correct syntax?
> 
> (add-hook 'latex-mode-hook (lambda() (set-fill-column 100)))
> 
>> Also, once I've done that, can I set it differently for mail-mode and
>> text-mode?
> 
> Sure, just the same like above.  Of course, latex-mode also runs
> text-mode-hook, but it might run it before latex-mode-hook.

OK, that's exactly what I wanted but things are occurring in the 
wrong order. I now have the following in my .emacs file: 

(add-hook 'text-mode-hook 'turn-on-auto-fill)
(add-hook 'latex-mode-hook 'turn-on-auto-fill)
(add-hook 'html-mode-hook 'turn-off-auto-fill)
(add-hook 'latex-mode-hook (lambda() (set-fill-column 100)))
(add-hook 'mail-mode-hook (lambda() (set-fill-column 60)))
(add-hook 'text-mode-hook (lambda() (set-fill-column 80)))

When I start Emacs in *scratch*, fill-column = 70 (default). If I open a 
text or LaTeX file, it changes to 80. If I "C-x m", it changes to 60.

So mail-mode is picking up turn-on-auto-fill from text-mode, but its own 
set-fill-column is overriding that of text-mode.

But latex-mode's set-fill-column is being overridden by the text-mode-hook. 
Any ideas on how to change that?

-- Adam