Debugging lisp during startup

Debugging lisp during startup

[Chris Hall]

I'm sure this a FAQ -- can someone point me to information on how to
debug elisp during the Emacs startup process?

I'm trying to debug Emacs.app for GNUstep, and it looks like there is
a problem in the windowing system initialization process.  The menu
displays, but no main window, and the window won't do anything.

I've tried starting emacs -nw, then (debug-on-entry
'make-frame-on-display), but I only get so far before it just hangs on
me.

Thanks,

Chris Hall

Re: Debugging lisp during startup

[Stefan Monnier]

> I'm sure this a FAQ -- can someone point me to information on how to
> debug elisp during the Emacs startup process?

> I'm trying to debug Emacs.app for GNUstep, and it looks like there is
> a problem in the windowing system initialization process.  The menu
> displays, but no main window, and the window won't do anything.

> I've tried starting emacs -nw, then (debug-on-entry
> 'make-frame-on-display), but I only get so far before it just hangs on
> me.

You're probably better off debugging it at the C level.


        Stefan

Re: Debugging lisp during startup

[Chris Hall]

On 2008-02-07 05:25:25 -1000 Stefan Monnier <monnier@iro.umontreal.ca> 
wrote:

>> I've tried starting emacs -nw, then (debug-on-entry
>> 'make-frame-on-display), but I only get so far before it just hangs 
>> on
>> me.
> 
> You're probably better off debugging it at the C level.
> 

Ouch.

Are there some tips available somewhere, or it basically a matter of 
setting a breakpoint in 'Feval' (or similar) then laboriously 
examining whatever is on the stack?

Thanks,

Chris H.