* Re: Loading a file vs evaluating its buffer
[not found] <mailman.10550.1412581277.1147.help-gnu-emacs@gnu.org>
@ 2014-10-06 8:15 ` Pascal J. Bourguignon
2014-10-06 8:33 ` Thorsten Jolitz
0 siblings, 1 reply; 3+ messages in thread
From: Pascal J. Bourguignon @ 2014-10-06 8:15 UTC (permalink / raw)
To: help-gnu-emacs
Thorsten Jolitz <tjolitz@gmail.com> writes:
> Hi List,
>
> when I try to store the installation directory of an app while loading
> its init file "A.el" with this code
>
> #+BEGIN_SRC emacs-lisp
> (defvar my-installation-directory ""
> "My installation directory.")
>
> (setq my-installation-directory
> (file-name-directory
> (directory-file-name
> (file-name-directory
> (buffer-file-name)))))
> #+END_SRC
>
> I get
>
> ,----
> | Load error for /home/tj/junk/el/A.el:
> | (wrong-type-argument stringp nil)
> `----
>
> but doing M-x eval-buffer in buffer "A.el" works as expected:
>
> ,----[ C-h v my-installation-directory RET ]
> | my-installation-directory is a variable defined in `A.el'.
> | Its value is "/home/tj/junk/"
> |
> | Documentation:
> | My installation directory.
> `----
>
> How can I get the same result when loading the file?
(defvar my-installation-directory ""
"My installation directory.")
(eval-when (load eval)
;; This sets my-installation-directory to the directory containing
;; the directory containing this file.
(setq my-installation-directory
(file-name-directory
(directory-file-name
(file-name-directory
(or load-file-name (buffer-file-name)))))))
--
__Pascal Bourguignon__ http://www.informatimago.com/
“The factory of the future will have only two employees, a man and a
dog. The man will be there to feed the dog. The dog will be there to
keep the man from touching the equipment.” -- Carl Bass CEO Autodesk
^ permalink raw reply [flat|nested] 3+ messages in thread
* Loading a file vs evaluating its buffer
@ 2014-10-06 7:40 Thorsten Jolitz
0 siblings, 0 replies; 3+ messages in thread
From: Thorsten Jolitz @ 2014-10-06 7:40 UTC (permalink / raw)
To: help-gnu-emacs
Hi List,
when I try to store the installation directory of an app while loading
its init file "A.el" with this code
#+BEGIN_SRC emacs-lisp
(defvar my-installation-directory ""
"My installation directory.")
(setq my-installation-directory
(file-name-directory
(directory-file-name
(file-name-directory
(buffer-file-name)))))
#+END_SRC
I get
,----
| Load error for /home/tj/junk/el/A.el:
| (wrong-type-argument stringp nil)
`----
but doing M-x eval-buffer in buffer "A.el" works as expected:
,----[ C-h v my-installation-directory RET ]
| my-installation-directory is a variable defined in `A.el'.
| Its value is "/home/tj/junk/"
|
| Documentation:
| My installation directory.
`----
How can I get the same result when loading the file?
--
cheers,
Thorsten
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2014-10-06 8:15 ` Loading a file vs evaluating its buffer Pascal J. Bourguignon
2014-10-06 8:33 ` Thorsten Jolitz
2014-10-06 7:40 Thorsten Jolitz
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