Re: [Matlab-emacs-discuss] File mode specification error: (wrong-type-argument stringp nil)

[Alan <ora...@gm...>]

I just realized I forgot to CC the email list. Here is the reply I
sent to Eric. Sorry to Eric for getting 2 emails!

Thanks for the reply.

Using the latest matlab.el (Revision 1.29), here is the output after
starting 'emacs -nw', then doing M-x toggle-debug-on-error, then C-x
C-f blah.m to create or find a non-existent text file "blah.m":

Debugger entered--Lisp error: (void-variable mlfile)
 (or mlfile "")
 (file-name-directory (or mlfile ""))
 (expand-file-name "toolbox/emacsinit.m" (file-name-directory (or mlfile "")))
 (let ((mlfile ...) (dir ...)) (and mlfile (file-exists-p dir)))
 (defvar matlab-shell-use-emacs-toolbox (let (... ...) (and
mlfile...)) "Add the `matlab-shell' MATLAB toolbox to the MATLAB path
on startup.")
 eval-buffer(#<buffer  *load*> nil "/home/alan/.matlab.el" nil t)  ;
Reading at buffer position 152939
 load-with-code-conversion("/home/alan/.matlab.el"
"/home/alan/.matlab.el" nil t)
 matlab-mode()
 set-auto-mode-0(matlab-mode nil)
 set-auto-mode()
 normal-mode(t)
 after-find-file(t t)
 find-file-noselect-1(#<buffer blah.m> "~/blah.m" nil nil "~/blah.m" nil)
 find-file-noselect("~/blah.m" nil nil t)
 find-file("~/blah.m" t)
 call-interactively(find-file nil nil)


Some further info about my setup: I renamed the file matlab.el to
.matlab.el, and used the following code in my .emacs file:

(autoload 'matlab-mode "~/.matlab" "Enter MATLAB mode." t)
(setq auto-mode-alist (cons '("\\.m\\'" . matlab-mode)
auto-mode-alist))
(autoload 'matlab-shell "~/.matlab" "Interactive MATLAB mode." t)


Any suggestions or hints?

Thanks,
Alan

On Wed, Mar 23, 2011 at 9:01 AM, Eric Ludlam <Eri...@ma...> wrote:
> Hi,
>
>  Can you do:
>
> M-x toggle-debug-on-error RET
>
> and reproduce the error?  The resulting stack will help identify the culprit.
>
> Eric
>
> -----Original Message-----
> From: Alan [mailto:ora...@gm...]
> Sent: Sunday, March 20, 2011 12:57 AM
> To: mat...@li...
> Subject: [Matlab-emacs-discuss] File mode specification error: (wrong-type-argument stringp nil)
>
> Hi,
>
> I'm trying to use just the matlab.el file for editing code. However,
> if I use any version >= 3.3.0 (corresponding to revision number >=
> 1.14), I get the following error:
>
> File mode specification error: (wrong-type-argument stringp nil)
>
> whenever I try to open a .m file in emacs. This happens with emacs
> versions 21 and 23.
>
> Has this happened to anyone before? Know of any fixes?
>
> Thanks for your help,
>
> Alan
>
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