Function error always enters the debugger

Function error always enters the debugger

[Davin Pearson]

I tried to send this message to bug-gnu-emacs@gnu.org
but it bounced (dislikes gmail ?)  Does anyone
know why it bounced?

so I am resending it to the newsgroup.

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In GNU Emacs 21.3.1 (i386-mingw-nt5.1.2600)
 of 2004-03-11 on NYAUMO
configured using `configure --with-gcc (3.2)'
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: ENZ
  locale-coding-system: iso-latin-1
  default-enable-multibyte-characters: t

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

I have recently started using Emacs version 21.3 after a long period
with Emacs 20.7.  When I execute the following sexp:

(error "foo")

It always enters the debugger, irrespective of the value of
debug-on-error

I worked out a way of disabling this behaviour:

(defadvice error (before fix-bug activate)
  (setq debug-on-error nil))

This works but I would like to know why the problem arose in the first
place!


Recent input:
<down> <down> <return> <end> <up> <delete> <end> <delete>
<down> <next> <end> <return> <return> <return> C-y
<up> <up> <delete> <delete> <down> <delete> <delete>
<up> <end> <up> <left> <left> <down> <down> <S-left>
<S-left> <S-right> <right> n i l <S-delete> <S-delete>
<S-delete> <S-delete> <end> <f2> <f11> <up> <up> <up>
<up> <up> <up> <S-left> <f2> <f11> <down> <down> <down>
<down> <down> <home> C-k C-k C-y <help-echo> M-x s
u b m i <tab> t <S-backspace> C-h a b u g <return>
<C-tab> C-s r e p o r t C-s C-s C-s <home> <C-tab>
<f4> M-x r e p o <tab> r <tab> <return>

Recent messages:
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ad-Orig-error: smeg
Mark set
my-shift-backspace:
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call-interactively: Quit
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Re: Function error always enters the debugger

[Johan Bockgård]

"Davin Pearson" <davin.pearson@gmail.com> writes:

> When I execute the following sexp:
>
> (error "foo")
>
> It always enters the debugger, irrespective of the value of
> debug-on-error

Please read C-h v debug-on-error

-- 
Johan Bockgård

Re: Function error always enters the debugger

[Stefan Monnier]

> I have recently started using Emacs version 21.3 after a long period
> with Emacs 20.7.

Try C-h N
I know it's longish, but it's worth reading and answers your question.


        Stefan