[Matlab-emacs-discuss] debugging: GUD seems not to be working ?

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Hi,

I'm totally new with matlab in emacs, but it looks great - I found a 
good source of information here:

http://blog.angjookanazawa.com/post/8815280589/productivity-matlab-emacs-integration-more

What I did, was to use the package software tool (synaptic) in ubuntu to 
dowload "matlab-support" and I didn't do all the CVS-stuff to download 
anything other than this (maybe that's what I did wrong?).

Anyway, I tried "M-x matlab-shell" and it seemed to work immediately! 
What I found looked (=looks) so great and cool. I can now type things 
exactly as in Matlab and plot graphs from inside of emacs using e.g. 
"plot(1:5, 2:6)" etc. Last thing that would make me really happy is to 
have debugging work in a nice way.

I don't have a GUD-menu. I tried "dbstop matlabfile.m linenumber" and 
then "run matlabfile" (without the .m-extension) and voila, it ran and 
stopped at that place. So far so good. Then I typed: "dbstep" and I can 
see that this works too. It steps a line ahead...

But I think I should have a GUD-menu... I tried "M-x gud-step" and it 
writes:

K>> gud-step
gud-step
{??? Undefined function or variable 'gud'.
}
K>> if usejava('jvm'), 
com.mathworks.services.Prefs.setBooleanPref('EditorGraphicalDebugging', 
false); end
K>> gud-step
gud-step
{??? Undefined function or variable 'gud'.
}

I want to assign a single key for "next", "step", "continue" etc... 
Isn't something wrong here?

Shouldn't I have a GUD menu ?

Please comment on this, thank you very much... I would like single-key 
debugging turned on and then I think maybe I'll get rid of this 
matlab-stuff and only use emacs in the future (I hope)...

Thanks for ANY comments/ideas/suggestions...