* call-process writing to the wrong buffer
@ 2016-11-02 11:30 Matthias Pfeifer
2016-11-02 11:41 ` Joost Kremers
0 siblings, 1 reply; 3+ messages in thread
From: Matthias Pfeifer @ 2016-11-02 11:30 UTC (permalink / raw)
To: help-gnu-emacs
I frequently have to look into a binary file and want to translate it into
text by using an external program. I came up with this snippet from which I
had expected that it opens a new buffer, selects that buffer and writes
into it the output of this external program:
(defun mp/show-x509 ()
(interactive)
(let ((cert-file (buffer-file-name))
(right-window (split-window-right))
(openssl-buffer (generate-new-buffer (generate-new-buffer-name
"*openssl*"))))
(select-window right-window)
(set-window-buffer nil openssl-buffer)
(call-process "openssl" nil t (list openssl-buffer t) "x509" "-text"
"-noout" "-in" cert-file)))
However I must have some misunderstanding here. The output of call-process
is in fact inserted into the window on the left (left when assuming there
is only one window in the frame when caling mp/show-x509). And I really do
not have a clue whats wrong.
matthias
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: call-process writing to the wrong buffer
2016-11-02 11:30 call-process writing to the wrong buffer Matthias Pfeifer
@ 2016-11-02 11:41 ` Joost Kremers
2016-11-02 17:43 ` Matthias Pfeifer
0 siblings, 1 reply; 3+ messages in thread
From: Joost Kremers @ 2016-11-02 11:41 UTC (permalink / raw)
To: Matthias Pfeifer; +Cc: help-gnu-emacs
On Wed, Nov 02 2016, Matthias Pfeifer wrote:
> I frequently have to look into a binary file and want to
> translate it into
> text by using an external program. I came up with this snippet
> from which I
> had expected that it opens a new buffer, selects that buffer and
> writes
> into it the output of this external program:
>
> (defun mp/show-x509 ()
> (interactive)
> (let ((cert-file (buffer-file-name))
> (right-window (split-window-right))
> (openssl-buffer (generate-new-buffer
> (generate-new-buffer-name
> "*openssl*"))))
> (select-window right-window)
> (set-window-buffer nil openssl-buffer)
> (call-process "openssl" nil t (list openssl-buffer t) "x509"
> "-text"
> "-noout" "-in" cert-file)))
>
> However I must have some misunderstanding here. The output of
> call-process
> is in fact inserted into the window on the left (left when
> assuming there
> is only one window in the frame when caling mp/show-x509). And I
> really do
> not have a clue whats wrong.
You probably want:
(call-process "openssl" nil (list openssl-buffer t) t "x509"
"-text" "-noout" "-in" cert-file)
(Swap third and fourth argument.)
--
Joost Kremers
Life has its moments
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: call-process writing to the wrong buffer
2016-11-02 11:41 ` Joost Kremers
@ 2016-11-02 17:43 ` Matthias Pfeifer
0 siblings, 0 replies; 3+ messages in thread
From: Matthias Pfeifer @ 2016-11-02 17:43 UTC (permalink / raw)
To: help-gnu-emacs
I was overlooking the obvious...
Many thanks!
^ permalink raw reply [flat|nested] 3+ messages in thread
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