* 23.0.50; catching C-x 3 in yes-or-no-p
@ 2008-01-21 0:14 Lennart Borgman (gmail)
2008-01-21 20:30 ` Richard Stallman
0 siblings, 1 reply; 2+ messages in thread
From: Lennart Borgman (gmail) @ 2008-01-21 0:14 UTC (permalink / raw)
To: emacs-pretest-bug
The error raised when doing C-x 3 when yes-or-no-p is active can not be
handled.
To see this start from
emacs -Q
and eval this function in the *scratch* buffer
(defun protected-yes-or-no-p ()
(condition-case err
(yes-or-no-p "Prompt ")
(error
(lwarn 'got-error :warning "%s" err))))
and call it. When the prompt is visible type
C-x 3
In GNU Emacs 23.0.50.1 (i386-mingw-nt5.1.2600)
of 2008-01-13
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: 23.0.50; catching C-x 3 in yes-or-no-p
2008-01-21 0:14 23.0.50; catching C-x 3 in yes-or-no-p Lennart Borgman (gmail)
@ 2008-01-21 20:30 ` Richard Stallman
0 siblings, 0 replies; 2+ messages in thread
From: Richard Stallman @ 2008-01-21 20:30 UTC (permalink / raw)
To: Lennart Borgman (gmail); +Cc: emacs-pretest-bug
and eval this function in the *scratch* buffer
(defun protected-yes-or-no-p ()
(condition-case err
(yes-or-no-p "Prompt ")
(error
(lwarn 'got-error :warning "%s" err))))
and call it. When the prompt is visible type
C-x 3
I think I figured out what happened.
I suspect that you called it with M-:, right?
That binds debug-on-error to t.
yes-or-no-p starts a recursive editing loop, and when there are no
handlers _inside_ the recursive editing loop and debug-on-error is t,
errors invoke the debugger. So this error invokes the debugger.
I think that qualifies as a bug. Perhaps the right fix is that
recursive editin levels should bind debug-on-error to nil.
Does anyone see a problem in that fix?
^ permalink raw reply [flat|nested] 2+ messages in thread
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