23.0.60; (error "Selecting deleted buffer")

[Nick Dokos]

I start emacs from the build directory in a terminal window like this:

   ./emacs -Q -nw -nl

I load org-mode by doing C-x e on the following two lines:

(add-to-list 'load-path (expand-file-name "~/src/emacs/org/git/org-mode/lisp"))
(require 'org-install)

and set debug-on-error to t.

I use the latest org-mode, obtained from the git repository at
git://repo.or.cz/org-mode.git. For maximum debugging information, I
deliberately deleted all the .elc files in the org-mode installation
after making it (I do get the error with the .elc files present).
But I just tried to reproduce it with the version of org-mode distributed
with emacs23: it happens there too, at least with compiled org-mode; I
did not try to delete the .elc files in this setup though.

I visit a file with the following contents (it comes from the org-mode
manual):

* Birthdays and similar stuff
#+CATEGORY: Holiday
%%(org-calendar-holiday)   ; special function for holiday names
#+CATEGORY: Ann
%%(diary-anniversary 14  5 1956) Arthur Dent is %d years old


Then I execute C-c C-e i which dispatches to org-export-icalendar-this-file
through org-export. I get an error with the following backtrace:

Debugger entered--Lisp error: (error "Selecting deleted buffer")
  set-buffer(#<killed buffer>)
  (save-current-buffer (set-buffer sexp-buffer) (insert sexp "\n"))
  (with-current-buffer sexp-buffer (insert sexp "\n"))
  (catch :skip (org-agenda-skip) (setq b (match-beginning 0)) (goto-char (1- 
...)) (forward-sexp 1) (end-of-line 1) (setq sexp (buffer-substring b ...)) 
(with-current-buffer sexp-buffer (insert sexp "\n")) (princ 
(org-diary-to-ical-string sexp-buffer)))
  (while (re-search-forward "^&?%%(" nil t) (catch :skip (org-agenda-skip) 
(setq b ...) (goto-char ...) (forward-sexp 1) (end-of-line 1) (setq sexp ...) 
(with-current-buffer sexp-buffer ...) (princ ...)))
  (progn (goto-char (point-min)) (while (re-search-forward "^&?%%(" nil t) 
(catch :skip ... ... ... ... ... ... ... ...)))
  (if (and org-icalendar-include-sexps (condition-case nil ... ...) (fboundp 
...)) (progn (goto-char ...) (while ... ...)))
  (when (and org-icalendar-include-sexps (condition-case nil ... ...) (fboundp 
...)) (goto-char (point-min)) (while (re-search-forward "^&?%%(" nil t) (catch 
:skip ... ... ... ... ... ... ... ...)))
  (save-excursion (goto-char (point-min)) (while (re-search-forward re1 nil t) 
(catch :skip ... ... ... ... ... ... ... ... ... ... ... ...)) (when (and 
org-icalendar-include-sexps ... ...) (goto-char ...) (while ... ...)) (when 
org-icalendar-include-todo (setq prefix "TODO-") (goto-char ...) (while ... 
...)))
  (let ((re1 ...) (re2 ...) (dts ...) hd ts ts2 state status (inc t) pos b sexp 
rrule scheduledp deadlinep prefix tmp pri category entry location summary desc 
uid (sexp-buffer ...)) (org-refresh-category-properties) (save-excursion 
(goto-char ...) (while ... ...) (when ... ... ...) (when 
org-icalendar-include-todo ... ... ...)))
  org-print-icalendar-entries(nil)
  (let ((standard-output ical-buffer)) (if combine (and ... ... ...) 
(org-start-icalendar-file category)) (org-print-icalendar-entries combine) 
(when (or ... ...) (org-finish-icalendar-file) (set-buffer ical-buffer) 
(save-buffer) (run-hooks ...) (and ... ... ...)))
  (catch (quote nextfile) (org-check-agenda-file file) (set-buffer 
(org-get-agenda-file-buffer file)) (unless combine (setq ical-file ...) (setq 
ical-buffer ...) (with-current-buffer ical-buffer ...)) (setq category (or 
org-category ...)) (if (symbolp category) (setq category ...)) (let (...) (if 
combine ... ...) (org-print-icalendar-entries combine) (when ... ... ... ... 
... ...)))
  (while (setq file (pop files)) (catch (quote nextfile) (org-check-agenda-file 
file) (set-buffer ...) (unless combine ... ... ...) (setq category ...) (if ... 
...) (let ... ... ... ...)))
  (let* ((dir ...) file ical-file ical-buffer category started 
org-agenda-new-buffers) (and (get-buffer "*ical-tmp*") (kill-buffer 
"*ical-tmp*")) (when combine (setq ical-file ... ical-buffer ...) (set-buffer 
ical-buffer) (erase-buffer)) (while (setq file ...) (catch ... ... ... ... ... 
... ...)) (org-release-buffers org-agenda-new-buffers))
  (save-excursion (org-prepare-agenda-buffers files) (let* (... file ical-file 
ical-buffer category started org-agenda-new-buffers) (and ... ...) (when 
combine ... ... ...) (while ... ...) (org-release-buffers 
org-agenda-new-buffers)))
  org-export-icalendar(nil "/home/nick/lib/org/ical.org")
  org-export-icalendar-this-file()
  call-interactively(org-export-icalendar-this-file)
  (if (and bg (nth 2 ass)) (let (...) (set-process-sentinel p ...) (message 
"Background process \"%s\": started" p)) (call-interactively (nth 1 ass)))
  (let* ((bg ...) (help "[t]   insert the export option template\n[v]   limit 
export to visible part of outline tree\n\n[a] export as ASCII\n\n[h] export as 
HTML\n[H] export as HTML to temporary buffer\n[R] export region as HTML\n[b] 
export as HTML and browse immediately\n[x] export as XOXO\n\n[l] export as 
LaTeX\n[L] export as LaTeX to temporary buffer\n\n[i] export current file as 
iCalendar file\n[I] export all agenda files as iCalendar files\n[c] export 
agenda files into combined iCalendar file\n\n[F] publish current file\n[P] 
publish current project\n[X] publish... (project will be prompted for)\n[A] 
publish all projects") (cmds ...) r1 r2 ass) (save-window-excursion 
(delete-other-windows) (with-output-to-temp-buffer "*Org Export/Publishing 
Help*" ...) (message "Select command: ") (setq r1 ...)) (setq r2 (if ... ... 
r1)) (unless (setq ass ...) (error "No command associated with key %c" r1)) (if 
(and bg ...) (let ... ... ...) (call-interactively ...)))
  org-export(nil)
  call-interactively(org-export nil nil)


I posted a message to the org-mode list and it turns out that several
people have seen the same "deleted buffer" error but in widely
disparate situations, some involving org-mode, some not. One person
attributed it to Debian's site-lisp configuration, but for me it
happens on emacsen installed from CVS (both on 22.1.50.2 which is what
I use normally and also on 23.0.60.1 which I installed specifically
for this test.) I tried the same test on an emacs 21 on an old RHEL4.1
installation and I could not reproduce it there.




In GNU Emacs 23.0.60.1 (i686-pc-linux-gnu, GTK+ Version 2.10.11)
 of 2008-05-28 on alphaville.zko.hp.com
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=SCIM
  locale-coding-system: utf-8-unix
  default-enable-multibyte-characters: t

Major mode: Debugger

Minor modes in effect:
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  global-auto-composition-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
ESC [ > 1 ; 1 6 0 1 ; 0 c C-x C-f ~ / e l i s p / c 
o n f i g / o r g - c o n TAB RET C-x C-f o r g - s 
t r i TAB RET C-n C-p C-e C-x C-e C-n C-n C-n C-n C-n 
C-x C-e C-x C-f ~ / l i b / o r g / i c a l TAB o r 
g RET C-n TAB C-c C-e i ESC x s e t - v a r RET d e 
b u g - o n - e r r o t DEL r RET t RET C-c C-e i C-p 
C-@ 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-n C-n C-n C-n C-n C-n C-p 
C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p 
C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p 
C-n C-n C-n C-n C-p C-p C-p C-p ESC x e m a c s - v 
e r s i o n RET ESC x r e p o r t - e m a c - DEL s 
- b u g RET

Recent messages:
(New file)
Wrote /tmp/orgics11967M_n
save-current-buffer: Selecting deleted buffer
Select command: 
(New file)
Wrote /tmp/orgics11967cqJ
Entering debugger...
Mark set
GNU Emacs 23.0.60.1 (i686-pc-linux-gnu, GTK+ Version 2.10.11) of 2008-05-28 on 
alphaville.zko.hp.com
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