About `max-lisp-eval-depth'

About `max-lisp-eval-depth'

[Xue Fuqiao]

What's the best value for it?  I know it depends on the platform and computer that run Emacs, but how can I get the most suitable value for me?

I ask this question because when I did coverage testing for a file of Lisp code just now, an error came up: 
Debugger entered--Lisp error: (error "Lisp nesting exceeds `max-lisp-eval-depth'")
-- 
Best regards, Xue Fuqiao.
http://www.emacswiki.org/emacs/XueFuqiao

Re: About `max-lisp-eval-depth'

[Barry Margolin]

In article <mailman.16687.1357300884.855.help-gnu-emacs@gnu.org>,
 Xue Fuqiao <xfq.free@gmail.com> wrote:

> What's the best value for it?  I know it depends on the platform and computer 
> that run Emacs, but how can I get the most suitable value for me?
> 
> I ask this question because when I did coverage testing for a file of Lisp 
> code just now, an error came up: 
> Debugger entered--Lisp error: (error "Lisp nesting exceeds 
> `max-lisp-eval-depth'")

Unless you're doing something that specifically requires high levels of 
recursion, the default is probably appropriate.  99% of the time this 
error indicates an infinite recursion bug, so increasing the max would 
just postpone the error, not prevent it.  If you are doing something 
with deep recursion, you need to determine its needs and set the option 
accordingly.

-- 
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***