bug#12957: 24.2.50; unable to get elisp backtrace with (setq debug-on-error t)

bug#12957: 24.2.50; unable to get elisp backtrace with (setq debug-on-error t)

[Yagnesh Raghava Yakkala]

I am seeing this for some time. using emacs-24 branch head.

When I do `M-x toggle-debug-on-error', I get the backtrace for elisp errors
but for the first time only. The second time onwards emacs unable to emit the
backtrace.

I don't know how to isolate this bug and I am unable to reproduce with "emacs
-Q".




In GNU Emacs 24.2.50.4 (x86_64-unknown-linux-gnu, GTK+ Version 2.20.1)
 of 2012-11-15 on okhotsk19
Windowing system distributor `The X.Org Foundation', version 11.0.10706000
System Description:	Ubuntu 10.04.4 LTS

Configured using:
 `configure '--prefix=/home/yagnesh/local/emacs-8d2c633'
 '--without-compress-info''

Important settings:
  value of $LC_COLLATE: en_US.UTF-8
  value of $LC_CTYPE: en_US.UTF-8
  value of $LC_MESSAGES: en_US.UTF-8
  value of $LANG: C
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: nil
  default enable-multibyte-characters: t

Major mode: Org

Minor modes in effect:
  semantic-minor-modes-format: ((:eval (if (or semantic-highlight-edits-mode semantic-show-unmatched-syntax-mode)  S)))
  diff-auto-refine-mode: t
  org-indent-mode: t
  flyspell-mode: t
  global-edit-server-edit-mode: t
  winner-mode: t
  shell-dirtrack-mode: t
  recentf-mode: t
  yas-global-mode: t
  yas-minor-mode: t
  global-auto-complete-mode: t
  auto-complete-mode: t
  autopair-mode: t
  autopair-global-mode: t
  ido-everywhere: t
  display-time-mode: t
  show-paren-mode: t
  global-ede-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  auto-fill-function: org-auto-fill-function
  transient-mark-mode: t

Recent input:
M-k C-x o C-n C-n C-n C-n C-n C-n C-n C-x b C-g C-x 
C-f <backspace> ~ / g i <backspace> <backspace> . m 
e <backspace> <backspace> e m <return> e l <backspace> 
<backspace> e m a <backspace> <backspace> <backspace> 
l a t e <return> M-> C-p C-p C-p C-p C-p C-p M-b M-b 
M-b C-p M-b M-b b a c k e n d SPC C-M-x C-x b <return> 
C-x C-b C-n C-n C-n <return> M-x SPC SPC <return> C-x 
b <return> M-k C-x b <return> C-x b u n <return> M-x 
g n u s - w <backspace> a <backspace> m e s <return> 
M-> M-< M-x <return> M-x <return> M-> M-< M-x <return> 
C-c C-n C-c C-p C-n C-n C-n C-n C-n C-n C-n C-n C-n 
C-n C-n C-n C-n C-n C-n C-n C-a C-n C-n M-b M-b M-b 
t h e SPC s e c o n d SPC e x a p m <backspace> <backspace> 
m p l e SPC w i t h SPC M-f M-f M-f . M-b M-b M-b M-b 
a l s o SPC M-d M-d C-n M-b M-b <backspace> C-n C-n 
C-a C-n C-n <down-mouse-5> <mouse-5> <double-down-mouse-5> 
<double-mouse-5> <triple-down-mouse-5> <triple-mouse-5> 
<triple-down-mouse-5> <triple-mouse-5> M-< C-n C-n 
C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n C-n 
C-n C-n C-n C-b SPC C-n C-n C-n C-n C-a C-x b <return> 
M-x C-g C-x C-b C-n C-n <return> M-x d e b u <backspace> 
<backspace> <backspace> <backspace> t o g <return> 
M-x <return> M-x o r g - <return> M-x SPC <return> 
M-x <return> M-x o r g <return> C-x C-b C-g M-k M-x 
o r g <backspace> <backspace> <backspace> t <backspace> 
b u g - e <backspace> <backspace> <backspace> <backspace> 
<backspace> <backspace> r e p o r t <return>

Recent messages:
Updating buffer list...done
Debug on Error disabled globally
Debug on Error enabled globally
org-export-as: Wrong number of arguments: (lambda (backend headline contents info) (if (member "ignoreheading" (org-element-property :tags headline)) contents (org-e-latex-headline headline contents info))), 2
Debug on Error disabled globally
Debug on Error enabled globally
org-export-as: Wrong number of arguments: (lambda (backend headline contents info) (if (member "ignoreheading" (org-element-property :tags headline)) contents (org-e-latex-headline headline contents info))), 2
Updating buffer list...done
Quit
delete-backward-char: Text is read-only

Load-path shadows:
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/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-capture hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-capture
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-beamer hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-beamer
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-lparse hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-lparse
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/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-element hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-element
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-irc hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-irc
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-publish hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-publish
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-ruby hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-ruby
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-scala hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-scala
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-indent hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-indent
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-wl hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-wl
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-css hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-css
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-mscgen hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-mscgen
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-attach hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-attach
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-mac-message hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-mac-message
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-sql hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-sql
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-taskjuggler hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-taskjuggler
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-plantuml hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-plantuml
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-C hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-C
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-maxima hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-maxima
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-java hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-java
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-io hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-io
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/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-icalendar hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-icalendar
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-asymptote hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-asymptote
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-freemind hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-freemind
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-habit hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-habit
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-remember hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-remember
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-ascii hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-ascii
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-mouse hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-mouse
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-jsinfo hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-jsinfo
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-list hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-list
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-python hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-python
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-tangle hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-tangle
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-xoxo hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-xoxo
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-datetree hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-datetree
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-gnuplot hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-gnuplot
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-bbdb hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-bbdb
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-ditaa hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-ditaa
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-archive hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-archive
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-screen hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-screen
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-keys hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-keys
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-clojure hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-clojure
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-exp hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-exp
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-agenda hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-agenda
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-lisp hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-lisp
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-loaddefs hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-loaddefs
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-gnus hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-gnus
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-footnote hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-footnote
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-picolisp hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-picolisp
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-scheme hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-scheme
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-lilypond hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-lilypond
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-eshell hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-eshell
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/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-latex hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-latex
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-sh hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-sh
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/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-colview hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-colview
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-timer hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-timer
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-mhe hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-mhe
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-R hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-R
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-bibtex hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-bibtex
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-html hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-html
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-pcomplete hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-pcomplete
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-table hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-table
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-ctags hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-ctags
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-entities hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-entities
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-awk hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-awk
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/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-crypt hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-crypt
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/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-lob hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-lob
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-plot hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-plot
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/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-dot hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-dot
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-mew hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-mew
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-vm hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-vm
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-w3m hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-w3m
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-special-blocks hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-special-blocks
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-haskell hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-haskell
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-latex hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-latex
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-clock hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-clock
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-odt hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-odt
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-protocol hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-protocol
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-calc hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-calc
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-org hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-org
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-feed hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-feed
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-mobile hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-mobile
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-docbook hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-docbook
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-version hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-version
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-eval hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-eval
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-docview hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-docview
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-install hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-install
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-js hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-js
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-fortran hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-fortran
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-ledger hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-ledger
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-comint hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-comint
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-compat hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-compat
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-exp hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-exp
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-ref hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-ref
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-id hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-id
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-matlab hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-matlab
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-info hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-info
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/org-mks hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/org-mks
/home/yagnesh/.emacs.d/el-get/org-mode/lisp/ob-emacs-lisp hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/org/ob-emacs-lisp
/home/yagnesh/.emacs.d/el-get/org-mode/.dir-locals hides /home/yagnesh/local/emacs-8d2c633/share/emacs/24.2.50/lisp/gnus/.dir-locals

Features:
(shadow emacsbug debug boxquote rect gnus-fun ob-sh ob-gnuplot ob-plantuml
ob-python ob-perl ob-octave ob-ditaa ob-dot loadhist gnus-draft dired-x
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thai tai-viet lao korean japanese hebrew greek romanian slovak czech european
ethiopic indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple
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widget hashtable-print-readable backquote make-network-process dbusbind
dynamic-setting system-font-setting font-render-setting move-toolbar gtk
x-toolkit x multi-tty emacs)

-- 
ఎందరో మహానుభావులు అందరికి వందనములు
YYR

bug#12957: 24.2.50; unable to get elisp backtrace with (setq debug-on-error t)

[Stefan Monnier]

> I am seeing this for some time. using emacs-24 branch head.  When I do
> `M-x toggle-debug-on-error', I get the backtrace for elisp errors but
> for the first time only.  The second time onwards emacs unable to emit
> the backtrace.

While the first backtrace is displayed, debug-on-error is temporarily
reset to nil.  So the behavior you describe could be explained if you
don't `q' or `c' from the first backtrace.


        Stefan

bug#12957: 24.2.50; unable to get elisp backtrace with (setq debug-on-error t)

[Yagnesh Raghava Yakkala]

Hello Stefan,

Thank you for the reply.,

> While the first backtrace is displayed, debug-on-error is temporarily
> reset to nil.  So the behavior you describe could be explained if you
> don't `q' or `c' from the first backtrace.

No, even if I set debug-on-error to t explicitly, I see the problem. My guess
(baseless though) was some package that I load from .emacs is fooling debugger.


Thanks.,
-- 
ఎందరో మహానుభావులు అందరికి వందనములు
YYR

bug#12957: 24.2.50; unable to get elisp backtrace with (setq debug-on-error t)

[Stefan Monnier]

> No, even if I set debug-on-error to t explicitly, I see the
> problem. My guess (baseless though) was some package that I load from
> .emacs is fooling debugger.

Actually now that I think about it, the way recursive debugging is
prevented is not by setting debug-on-error to nil (as it used to be) but
by setting inhibit-debugger to t (this is a fairly recent change), so
try (setq inhibit-debugger nil).


        Stefan

bug#12957: 24.2.50; unable to get elisp backtrace with (setq debug-on-error t)

[Yagnesh Raghava Yakkala]

Hello Stefan,

On Nov 23 2012, Stefan Monnier <monnier@iro.umontreal.ca> wrote:

>> No, even if I set debug-on-error to t explicitly, I see the
>> problem. My guess (baseless though) was some package that I load from
>> .emacs is fooling debugger.
>
> Actually now that I think about it, the way recursive debugging is
> prevented is not by setting debug-on-error to nil (as it used to be) but
> by setting inhibit-debugger to t (this is a fairly recent change), so
> try (setq inhibit-debugger nil).

Yes, That works. Thank you.

How can I close the bug report.?


Thanks.,
-- 
ఎందరో మహానుభావులు అందరికి వందనములు
YYR

bug#12957: 24.2.50; unable to get elisp backtrace with (setq debug-on-error t)

[Stefan Monnier]

> Yes, That works. Thank you.

Great, thanks.

> How can I close the bug report.?

By replying to "nnn-done@..." as I'm doing with this email.


        Stefan