Feature request: debug-quit

Feature request: debug-quit

[Dave Abrahams]

When Emacs gets hung, and I didn't know it was going to hang, so I
didn't turn on debug-on-quit, it would be great to have a keystroke that
would drop me straight into the debugger.  As it is, these things can be
almost impossible to diagnose.

-- 
Dave Abrahams
BoostPro Computing                  Software Development        Training
http://www.boostpro.com             Clang/LLVM/EDG Compilers  C++  Boost

Re: Feature request: debug-quit

[Stefan Monnier]

> When Emacs gets hung, and I didn't know it was going to hang, so I
> didn't turn on debug-on-quit, it would be great to have a keystroke that
> would drop me straight into the debugger.  As it is, these things can be
> almost impossible to diagnose.

One possibility is to use `debug-on-event'.
It's not a keystroke, tho.


        Stefan

Re: Feature request: debug-quit

[Dave Abrahams]

on Sun Nov 04 2012, Stefan Monnier <monnier-AT-IRO.UMontreal.CA> wrote:

>> When Emacs gets hung, and I didn't know it was going to hang, so I
>> didn't turn on debug-on-quit, it would be great to have a keystroke that
>> would drop me straight into the debugger.  As it is, these things can be
>> almost impossible to diagnose.
>
> One possibility is to use `debug-on-event'.
> It's not a keystroke, tho.

M-x apropos doesn't know what `debug-on-event' is, and neither do I

-- 
Dave Abrahams
BoostPro Computing                  Software Development        Training
http://www.boostpro.com             Clang/LLVM/EDG Compilers  C++  Boost

Re: Feature request: debug-quit

[Bastien]

Hi Dave,

Dave Abrahams <dave@boostpro.com> writes:

> on Sun Nov 04 2012, Stefan Monnier <monnier-AT-IRO.UMontreal.CA> wrote:
>
>>> When Emacs gets hung, and I didn't know it was going to hang, so I
>>> didn't turn on debug-on-quit, it would be great to have a keystroke that
>>> would drop me straight into the debugger.  As it is, these things can be
>>> almost impossible to diagnose.
>>
>> One possibility is to use `debug-on-event'.
>> It's not a keystroke, tho.
>
> M-x apropos doesn't know what `debug-on-event' is, and neither do I

This is what I have:

,----[ C-h v debug-on-event RET ]
| Enter debugger on this event.  When Emacs
| receives the special event specified by this variable, it will try to
| break into the debugger as soon as possible instead of processing the
| event normally through `special-event-map'.
| 
| Currently, the only supported values for this
| variable are `sigusr1' and `sigusr2'.
`----

What version of Emacs are you using?

-- 
 Bastien

Re: Feature request: debug-quit

[Dave Abrahams]

on Sun Nov 04 2012, Bastien <bzg-AT-gnu.org> wrote:

> Hi Dave,
>
> Dave Abrahams <dave@boostpro.com> writes:
>
>> on Sun Nov 04 2012, Stefan Monnier <monnier-AT-IRO.UMontreal.CA> wrote:
>>
>>>> When Emacs gets hung, and I didn't know it was going to hang, so I
>>>> didn't turn on debug-on-quit, it would be great to have a keystroke that
>>>> would drop me straight into the debugger.  As it is, these things can be
>>>> almost impossible to diagnose.
>>>
>>> One possibility is to use `debug-on-event'.
>>> It's not a keystroke, tho.
>>
>> M-x apropos doesn't know what `debug-on-event' is, and neither do I
>
> This is what I have:
>
> ,----[ C-h v debug-on-event RET ]
> | Enter debugger on this event.  When Emacs
> | receives the special event specified by this variable, it will try to
> | break into the debugger as soon as possible instead of processing the
> | event normally through `special-event-map'.
> | 
> | Currently, the only supported values for this
> | variable are `sigusr1' and `sigusr2'.
> `----
>
> What version of Emacs are you using?

24.2.2, and that variable is now known to my Emacs, thanks.

-- 
Dave Abrahams
BoostPro Computing                  Software Development        Training
http://www.boostpro.com             Clang/LLVM/EDG Compilers  C++  Boost