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Re: emacs suspension


From: Michelle Roderick
Subject: Re: emacs suspension
Date: Thu, 11 Dec 2003 11:30:52 -0700

"Stefan Monnier" <address@hidden> wrote in message
news:address@hidden
> > I didn't know why emacs was taking so long to load this file and also it
was
> > suspending (the problem I'm currently inquiring about).
>
> I'm not sure I understand what you mean by "suspending" (it normally means
> to stop working by relinquising the CPU, like when you hit C-z or when
> you close a laptop).

It temporarily hangs.  I can't click on the screen.  Sometimes the screen
blacks out.  I can't move the cursor.  It hangs but then comes back, but
after about 30 minutes.... extremely unproductive.

>
> > So I did a search on emacs and fontifying.
>
> That still does not explain why "fontifying".  Was it just a strange gut
> feeling or was there some indication that it was related ?
>
> > It looks like emacs is fontifying this file which
> > is a perl script.  The search mentioned increasing this font-lock
parameter
> > to handle larger files sizes.  I didn't know if this would or was
suppose to
> > help with the suspension problem.  Thus is why I brough it up here.
>
> It only changes the maximum file size past which fontification is
> turned off.  And by default in Emacs-21, jit-lock is turned on in which
> case font-lock-maximum-size is ignored anyway.
>

Good to know...

> >> > and it still locks up.  Has anybody had this problem???
> >>
> >> It could simply be hitting a bad regexp that has an exponential
behavior.
> >> Setting debug-on-quit to t and hitting C-g during the hang might help
> >> figure out what's going on.
>
> > I will try to play with the debug.
>
> What is the major-mode used for this file ?

CPerl

> Can you try the M-: (setq debug-on-error t) RET and then use C-g ?
>
I'll try...

Regards,

Michelle





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