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Re: Debug lisp code

From: David Kastrup
Subject: Re: Debug lisp code
Date: Tue, 30 Aug 2005 08:44:08 +0200
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux)

Michael Cadilhac <address@hidden> writes:

> David Kastrup <address@hidden> writes:
>> Michael Cadilhac <address@hidden> writes:
>>>   I've some kind of a freeze  in a function being a process filter. My
>>>   problem is  that I can't figure  out where the infinite  loop is and
>>>   it's a random thing, so I can't use debug-on-entry.
>>>   This function not being called by the user, C-g is not canceling it,
>>>   so set debug-on-quit to t is useless.
>>>   So, is there a way to debug things like
>>>   (run-with-idle-timer 1 nil (lambda () (while t)))
>>>   ?
>> (run-with-idle-timer 1 nil (lambda nil (let (inhibit-quit)
>>   (while t))))
>   Maybe I wasn't clear enough :-)
>   Let's say I have a function runed with `run-with-idle-timer'. This
>   function has an infinite loop somewhere in it.
>   Now,  this  function  is  called,  asynchronously.  The  call  being
>   asynchronous, I don't  know how I can stop this  function and have a
>   backtrace, in order to know where the infinite loop is.
>   I mean... with (run-with-idle-timer 1 nil (lambda () (while t))),
>   how do you unblock emacs ?

Did you actually read what I wrote above?  Bind inhibit-quit to nil in
the function, and it will be interruptible.

David Kastrup, Kriemhildstr. 15, 44793 Bochum

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