[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Detect if Emacs is running in -nw mode
From: |
Rupert Swarbrick |
Subject: |
Re: Detect if Emacs is running in -nw mode |
Date: |
Sun, 30 Mar 2008 06:23:43 -0500 |
User-agent: |
Pan/0.132 (Waxed in Black) |
On Sun, 30 Mar 2008 03:22:55 +0200, Christian Herenz wrote:
> Will Parsons schrieb:
>
>>> There is (not ...) ;-)
>>>
>>> (when (not (window-system))
>>> ...)
>>
>> Or how about (unless ...)
>>
>> (unless (window-system)
>> ...)
>>
>>
> So... That should do the trick. One last question, i assume that
> window-system can either be true or false. I searched the help for a
> variable called window-system but I found no explanation? Where do I
> have to search for emacs "system-variables"?
>
> Greets and thanks,
> Christian
Hi,
Two things:
1) In lisp, something referenced like (window-system) is a function
(unless you're in a weird macro, but let's ignore that) and the statement
`` (window-system) '' means call the function called window-system with
no arguments and evaluate to the result(s).
In emacs, looking up functions is different from variables, and you need
to check C-h f <function-name> (it has tab completion, just like C-h v).
The reason that there are two different look-up commands is that in any
lisp-2 (which includes elisp), there are two different lists of symbols:
one for functions and one for variables. Thus I could have a function
called x and also a variable called x and (+ 1 x) and (x "foo") would
both do the right thing. Starting "(" tells the lisp reader that the next
symbol name it's looking at is going to be a function.
2) However, there was actually a typo from Tom Rauchenwald's answer - in
fact is *is* a variable called window-system (I just fired up emacs to
check)
You might want to try C-h v window-system to read the docs for it.
And your code would be:
(unless window-system (menu-bar-mode -1))
Hope this helps!
Rupert
- Detect if Emacs is running in -nw mode, Christian Herenz, 2008/03/29
- Re: Detect if Emacs is running in -nw mode, Tom Rauchenwald, 2008/03/29
- Message not available
- Message not available
- Re: Detect if Emacs is running in -nw mode, Will Parsons, 2008/03/29
- Re: Detect if Emacs is running in -nw mode, Christian Herenz, 2008/03/29
- Re: Detect if Emacs is running in -nw mode, BVK, 2008/03/29
- Re: Detect if Emacs is running in -nw mode,
Rupert Swarbrick <=
- Re: Detect if Emacs is running in -nw mode, Christian Herenz, 2008/03/30
- Re: Detect if Emacs is running in -nw mode, Lennart Borgman (gmail), 2008/03/30
- Message not available
- Re: Detect if Emacs is running in -nw mode, Christian Herenz, 2008/03/30
- Re: Detect if Emacs is running in -nw mode, Lennart Borgman (gmail), 2008/03/30
- Re: Detect if Emacs is running in -nw mode, Peter Dyballa, 2008/03/30
- Message not available
- Re: Detect if Emacs is running in -nw mode, Christian Herenz, 2008/03/30
- Message not available
- Re: Detect if Emacs is running in -nw mode, Rupert Swarbrick, 2008/03/30
- Re: Detect if Emacs is running in -nw mode, Christian Herenz, 2008/03/30
- Re: Detect if Emacs is running in -nw mode, Tim X, 2008/03/31
- Re: Detect if Emacs is running in -nw mode, Christian Herenz, 2008/03/31