* debug-on-error always t??
@ 2011-10-25 0:25 Oleksandr Gavenko
2011-10-25 1:01 ` S Boucher
2011-10-25 1:06 ` Glenn Morris
0 siblings, 2 replies; 3+ messages in thread
From: Oleksandr Gavenko @ 2011-10-25 0:25 UTC (permalink / raw)
To: help-gnu-emacs
$ runemacs -Q
M-: debug-on-error RET
>> t
M-: (setq debug-on-error nil) RET
>> nil
M-: debug-on-error RET
>> t
debug-on-error С-x C-e
>> t
C-x v debug-on-error RET
>> debug-on-error is a variable defined in `C source code'.
>> Its value is nil
Same with Emacs 23.3/21.3 and 23.3 from Cygwin.
Why it stay for t when "M-:"??
Is this error?
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: debug-on-error always t??
2011-10-25 0:25 debug-on-error always t?? Oleksandr Gavenko
@ 2011-10-25 1:01 ` S Boucher
2011-10-25 1:06 ` Glenn Morris
1 sibling, 0 replies; 3+ messages in thread
From: S Boucher @ 2011-10-25 1:01 UTC (permalink / raw)
To: Oleksandr Gavenko, help-gnu-emacs@gnu.org
----- Original Message -----
> Same with Emacs 23.3/21.3 and 23.3 from Cygwin.
>
> Why it stay for t when "M-:"??
>
> Is this error?
I don't think so.
Do:
C-hfeval-expression<RET>
You'll see:
--snip--
If `eval-expression-debug-on-error' is non-nil, which is the default,
this command arranges for all errors to enter the debugger.
--snip--
i.e. when you do eval expression, debug-on-error is temporarily set to t unless eval-expression-debug-on-error is set to false.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: debug-on-error always t??
2011-10-25 0:25 debug-on-error always t?? Oleksandr Gavenko
2011-10-25 1:01 ` S Boucher
@ 2011-10-25 1:06 ` Glenn Morris
1 sibling, 0 replies; 3+ messages in thread
From: Glenn Morris @ 2011-10-25 1:06 UTC (permalink / raw)
To: Oleksandr Gavenko; +Cc: help-gnu-emacs
Oleksandr Gavenko wrote:
> C-x v debug-on-error RET
>>> debug-on-error is a variable defined in `C source code'.
>>> Its value is nil
>
> Same with Emacs 23.3/21.3 and 23.3 from Cygwin.
>
> Why it stay for t when "M-:"??
Because of eval-expression-debug-on-error, as discussed eg in
http://debbugs.gnu.org/cgi/bugreport.cgi?bug=8964#26 and subsequent
messages.
^ permalink raw reply [flat|nested] 3+ messages in thread
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