Programatically suppress "Async Shell command" buffer

Programatically suppress "Async Shell command" buffer

[gearheart]

Hi

When async shell-command is run, i get empty buffer that takes like half of
the screen. I know that if command is ran with C-u M-! than buffer is not
shown. I want to bind a calling of specific shell command to some key combo.

C-u is universal-argument, so i wrote a function like

(universal-argument)
(shell-command "something&")

but that still shows empty buffer. So how to write this correctly?

Thank you.
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Re: Programatically suppress "Async Shell command" buffer

[Peter Dyballa]

Am 06.07.2009 um 15:43 schrieb gearheart:

> When async shell-command is run, i get empty buffer that takes like  
> half of
> the screen.


Half of the frame in which shell-command was run is standard  
behaviour (could be an option exists to set size as for example for  
the *compilation* buffer, compilation-window-height). If your shell  
command does return nothing or white space, then the temporary *Shell  
Command Output* buffer will look empty (in the fringe you can have  
exact indicators). If your shell command, say, a simple ls, should  
return readable output and you get an empty *Shell Command Output*  
buffer, then something is faulty. Then try the same by launching GNU  
Emacs as 'emacs -Q' without any customisation.

--
Greetings

   Pete

People say that if you play Microsoft CD's backwards, you hear  
satanic things, but that's nothing, because if you play them  
forwards, they install MS Windows.

Re: Programatically suppress "Async Shell command" buffer

[gearheart]

Peter Dyballa wrote:
> 
> 
> Am 06.07.2009 um 15:43 schrieb gearheart:
> 
>> When async shell-command is run, i get empty buffer that takes like  
>> half of
>> the screen.
> 
> 
> Half of the frame in which shell-command was run is standard  
> behaviour (could be an option exists to set size as for example for  
> the *compilation* buffer, compilation-window-height). If your shell  
> command does return nothing or white space, then the temporary *Shell  
> Command Output* buffer will look empty (in the fringe you can have  
> exact indicators). If your shell command, say, a simple ls, should  
> return readable output and you get an empty *Shell Command Output*  
> buffer, then something is faulty. Then try the same by launching GNU  
> Emacs as 'emacs -Q' without any customisation.
> 
> 

oops, my bad.
to call async shell command without a buffer you need to run:
(shell-command "something&" (universal-argument))
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Re: Programatically suppress "Async Shell command" buffer

[dnquark]

I was just trying to figure out how to get this to work; this helped
but there still is a problem: once the async shell command terminates,
whatever output it produces (I think it's on stderr) which would
normally go to the dedicated output buffer gets inserted into my
current buffer.  How do I suppress all output from the command?..

On Jul 7, 2:00 pm, gearheart <yoyav...@gmail.com> wrote:
> Peter Dyballa wrote:
>
> > Am 06.07.2009 um 15:43 schrieb gearheart:
>
> >> When asyncshell-commandis run, i get empty buffer that takes like  
> >> half of
> >> the screen.
>
> > Half of the frame in whichshell-commandwas run is standard  
> > behaviour (could be an option exists to set size as for example for  
> > the *compilation* buffer, compilation-window-height). If yourshell 
> >commanddoes return nothing or white space, then the temporary *Shell 
> >CommandOutput* buffer will look empty (in the fringe you can have  
> > exact indicators). If yourshellcommand, say, a simple ls, should  
> > return readableoutputand you get an empty *ShellCommandOutput*  
> > buffer, then something is faulty. Then try the same by launching GNU  
> > Emacs as 'emacs -Q' without any customisation.
>
> oops, my bad.
> to call asyncshellcommandwithout a buffer you need to run:
> (shell-command"something&" (universal-argument))
> --
> View this message in context:http://www.nabble.com/Programatically-suppress-%22Async-Shell-command...
> Sent from the Emacs - Help mailing list archive at Nabble.com.

Re: Programatically suppress "Async Shell command" buffer

[dnquark]

To add: I can redirect the command output to /dev/dull, but the
problem is that I cannot run the command in a dired buffer since it is
read-only.  Is there a way to specify that the command produces no
output so that it could be possible to run in a read-only buffer,e.g.
dired?

On Jul 9, 10:17 pm, dnquark <dnqu...@gmail.com> wrote:
> I was just trying to figure out how to get this to work; this helped
> but there still is a problem: once the asyncshellcommand terminates,
> whatever output it produces (I think it's on stderr) which would
> normally go to the dedicated output buffer gets inserted into my
> current buffer.  How do I suppress all output from the command?..
>
> On Jul 7, 2:00 pm, gearheart <yoyav...@gmail.com> wrote:
>
> > Peter Dyballa wrote:
>
> > > Am 06.07.2009 um 15:43 schrieb gearheart:
>
> > >> When asyncshell-commandis run, i get empty buffer that takes like  
> > >> half of
> > >> the screen.
>
> > > Half of the frame in whichshell-commandwas run is standard  
> > > behaviour (could be an option exists to set size as for example for  
> > > the *compilation* buffer, compilation-window-height). If yourshell 
> > >commanddoes return nothing or white space, then the temporary *Shell 
> > >CommandOutput* buffer will look empty (in the fringe you can have  
> > > exact indicators). If yourshellcommand, say, a simple ls, should  
> > > return readableoutputand you get an empty *ShellCommandOutput*  
> > > buffer, then something is faulty. Then try the same by launching GNU  
> > > Emacs as 'emacs -Q' without any customisation.
>
> > oops, my bad.
> > to call asyncshellcommandwithout a buffer you need to run:
> > (shell-command"something&" (universal-argument))
> > --
> > View this message in context:http://www.nabble.com/Programatically-suppress-%22Async-Shell-command...
> > Sent from the Emacs - Help mailing list archive at Nabble.com.

Re: Programatically suppress "Async Shell command" buffer

[Peter Dyballa]

Am 10.07.2009 um 04:17 schrieb dnquark:

> How do I suppress all output from the command?


Most shell interpreters allow to redirect stderr (and stdin and  
stdout) to files (or pipes). Just the read the documentation of your  
shell interpreter.

GNU Emacs offers (the variable) shell-command-default-error-buffer –  
if you are looking for this and not the shell interpreter docs.

--
Greetings

   Pete

Wasting time is an important part of living.

Re: Programatically suppress "Async Shell command" buffer

[Peter Dyballa]

Am 10.07.2009 um 05:30 schrieb dnquark:

> To add: I can redirect the command output to /dev/dull, but the
> problem is that I cannot run the command in a dired buffer since it is
> read-only.  Is there a way to specify that the command produces no
> output so that it could be possible to run in a read-only buffer,e.g.
> dired?


I don't understand what you are trying to express. Can you give a  
detailed example? With actual shell commands? A picture (ASCII) of  
the dired buffer before and afterwards? And another example when you  
launched GNU Emacs with -Q and applied the same example?

--
Greetings

   Pete

You can learn many things from children.  How much patience you have,  
for instance.
				– Franklin P. Jones

Re: Programatically suppress "Async Shell command" buffer

[Leo Alekseyev]

I already solved the problem by simply turning off the read-only
property of the dired buffer.  I am interested to see if there is a
better fix though:


(defun terminal-here ()
  "Launch external terminal in the current buffer's directory or current dired
directory.  (Works by grabbing the directory name and passing as an argument to
a batch file.  Note the (toggle-read-only) workaround; the command will not run
in dired mode without it."
  (interactive)
  (let ((dir "") (diredp nil))
    (cond
     ((and (local-variable-p 'dired-directory) dired-directory)
      (setq dir dired-directory)
      (setq diredp t)
      (toggle-read-only)
)
     ((stringp (buffer-file-name))
      (setq dir (file-name-directory (buffer-file-name))))
      )
    (shell-command (concat "~/bin/mrxvt_win.bat \""dir"\" 2>/dev/null &")
 (universal-argument))
    (if diredp (toggle-read-only))
))


On Fri, Jul 10, 2009 at 6:48 AM, Peter Dyballa<Peter_Dyballa@web.de> wrote:
>
> Am 10.07.2009 um 05:30 schrieb dnquark:
>
>> To add: I can redirect the command output to /dev/dull, but the
>> problem is that I cannot run the command in a dired buffer since it is
>> read-only.  Is there a way to specify that the command produces no
>> output so that it could be possible to run in a read-only buffer,e.g.
>> dired?
>
>
> I don't understand what you are trying to express. Can you give a detailed
> example? With actual shell commands? A picture (ASCII) of the dired buffer
> before and afterwards? And another example when you launched GNU Emacs with
> -Q and applied the same example?
>
> --
> Greetings
>
>  Pete
>
> You can learn many things from children.  How much patience you have, for
> instance.
>                                – Franklin P. Jones
>
>

Re: Programatically suppress "Async Shell command" buffer

[Johan Bockgård]

gearheart <yoyavova@gmail.com> writes:

> When async shell-command is run, i get empty buffer that takes like
> half of the screen.

(call-process-shell-command "something" nil 0)