* Forward-char at end of buffer
@ 2006-06-26 18:17 Whitfield Diffie
2006-06-27 15:14 ` Kevin Rodgers
2006-06-27 16:16 ` Richard Stallman
0 siblings, 2 replies; 3+ messages in thread
From: Whitfield Diffie @ 2006-06-26 18:17 UTC (permalink / raw)
Monday 26 June 2006 at 11:09
Am I missing something?
Visit an empty buffer in a fresh --no-init emacs. Set debug-on-error
to true and type a control -f. An `end of buffer error will appear in the
echo area but no backtrace. Type control-x control-x and a `No mark set in
this buffer' error message appears and causes a backtrace.
Alternatively in the same circumstances, evaluate
(progn (setq aa 1) (forward-char 1) (setq bb 2))
The variable aa now has the value 1 and bb is undefined.
This seems to be true in emacs 21 on both Solaris and MacOs X.
Forward-char wasn't meant to produce an untrapped error was it?
Whit
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Forward-char at end of buffer
2006-06-26 18:17 Forward-char at end of buffer Whitfield Diffie
@ 2006-06-27 15:14 ` Kevin Rodgers
2006-06-27 16:16 ` Richard Stallman
1 sibling, 0 replies; 3+ messages in thread
From: Kevin Rodgers @ 2006-06-27 15:14 UTC (permalink / raw)
Whitfield Diffie wrote:
> Am I missing something?
>
> Visit an empty buffer in a fresh --no-init emacs. Set debug-on-error
> to true and type a control -f. An `end of buffer error will appear in the
> echo area but no backtrace. Type control-x control-x and a `No mark set in
> this buffer' error message appears and causes a backtrace.
>
> Alternatively in the same circumstances, evaluate
>
> (progn (setq aa 1) (forward-char 1) (setq bb 2))
>
> The variable aa now has the value 1 and bb is undefined.
>
>
> This seems to be true in emacs 21 on both Solaris and MacOs X.
> Forward-char wasn't meant to produce an untrapped error was it?
C-h v debug-ignored-errors
debug-ignored-errors is documented in the Emacs Lisp manual immediately
following debug-on-error.
--
Kevin
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Forward-char at end of buffer
2006-06-26 18:17 Forward-char at end of buffer Whitfield Diffie
2006-06-27 15:14 ` Kevin Rodgers
@ 2006-06-27 16:16 ` Richard Stallman
1 sibling, 0 replies; 3+ messages in thread
From: Richard Stallman @ 2006-06-27 16:16 UTC (permalink / raw)
Cc: bug-gnu-emacs
This seems to be true in emacs 21 on both Solaris and MacOs X.
Forward-char wasn't meant to produce an untrapped error was it?
The debugger is disabled for this error so as not to bother people.
You can control this thru debug-ignored-errors.
Happy hacking.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2006-06-26 18:17 Forward-char at end of buffer Whitfield Diffie
2006-06-27 15:14 ` Kevin Rodgers
2006-06-27 16:16 ` Richard Stallman
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