[O] Bug: emacs crashes when scrolling column view [7.7]

[Skip Collins]

I am reposting an earlier bug report with a slightly different subject
because this appears to be a serious problem not confined to aquamacs
on macos. I have triggered the crash on both windows and mac emacs and
provided a minimal, complete example to reproduce the problem. It
seems likely to be a more general problem with handling overlays in
Emacs 24. I am happy to provide any more details required to debug.

Originally posted with subject:
Bug: aquamacs hangs when scrolling column view [7.7 (release_7.7.104.g8425)]
http://thread.gmane.org/gmane.emacs.orgmode/45327

On Sat, Aug 6, 2011 at 5:50 PM, Skip Collins <address@hidden> wrote:
> On Fri, Aug 5, 2011 at 11:09 PM, Skip Collins <address@hidden> wrote:
>> When I move the scroll bar down in column view, Aquamacs typically
>> hangs. This is repeatable with the following minimal.emacs file:
>
> I tested emacs 24.0.50.1 and stock org 7.7 on windows xp the with the
> same minimal.emacs and minimal orgbug.org files. This crashes emacs.
> To trigger the crash, I open the file and ensure that the cursor is at
> the top. Then I go into column view with C-c C-x C-c. Then I use the
> scroll wheel on my mouse to scroll down. Immediately, the emacs abort
> dialog appears. I have not generated a backtrace.



On Fri, Aug 5, 2011 at 11:09 PM, Skip Collins <address@hidden> wrote:
> When I move the scroll bar down in column view, Aquamacs typically
> hangs. This is repeatable with the following minimal.emacs file:
>
> --8<---------------cut here---------------start------------->8---
> (add-to-list 'load-path (expand-file-name "~/Documents/elisp/org-mode/lisp"))
> (add-to-list 'auto-mode-alist '("\\.\\(org\\  |org_archive\\|txt\\)$"
> . org-mode))
> (setq org-agenda-files '("/tmp/test.org"))
> (require 'org-install)
> (require 'org-habit)
>
> (global-set-key "\C-cl" 'org-store-link)
> (global-set-key "\C-ca" 'org-agenda)
> (global-set-key "\C-cb" 'org-iswitchb)
> --8<---------------cut here---------------end--------------->8---
>
> orgbug.org:
>
> --8<---------------cut here---------------start------------->8---
> #
> * foo
> * bar
> * baz
> * qux
> * foo
> * bar
> * baz
> * qux
> * foo
> * bar
> * baz
> * qux
> * foo
> * bar
> * baz
> * qux
> --8<---------------cut here---------------end--------------->8---
>
> /Applications/Aquamacs.app/Contents/MacOS/Aquamacs -Q -l
> ~/minimal.emacs ~/orgbug.org
>
> Emacs  : GNU Emacs 24.0.50.3 (i386-apple-darwin10.8.0, NS 
> apple-appkit-1038.36)
>  of 2011-08-02 on colli
> Package: Org-mode version 7.7 (release_7.7.104.g8425)
>
> current state:
> ==============
> (setq
>  org-export-preprocess-before-selecting-backend-code-hook
> '(org-beamer-select-beamer-code)
>  org-tab-first-hook '(org-hide-block-toggle-maybe
>                      org-src-native-tab-command-maybe
>                      org-babel-hide-result-toggle-maybe)
>  org-speed-command-hook '(org-speed-command-default-hook
>                          org-babel-speed-command-hook)
>  org-occur-hook '(org-first-headline-recenter)
>  org-metaup-hook '(org-babel-load-in-session-maybe)
>  org-export-preprocess-before-normalizing-links-hook
> '(org-remove-file-link-modifiers)
>  org-confirm-shell-link-function 'yes-or-no-p
>  org-export-latex-final-hook '(org-beamer-amend-header org-beamer-fix-toc
>                               org-beamer-auto-fragile-frames
>                               org-beamer-place-default-actions-for-lists)
>  org-export-latex-after-initial-vars-hook '(org-beamer-after-initial-vars)
>  org-support-shift-select t
>  org-after-todo-state-change-hook '(org-clock-out-if-current)
>  org-src-mode-hook '(org-src-babel-configure-edit-buffer
>                     org-src-mode-configure-edit-buffer)
>  org-agenda-before-write-hook '(org-agenda-add-entry-text)
>  org-babel-pre-tangle-hook '(save-buffer)
>  org-export-blocks-postblock-hook '(org-exp-res/src-name-cleanup)
>  org-mode-hook '(#[nil "\300\301\302\303\304$\207"
>                   [org-add-hook change-major-mode-hook org-show-block-all
>                    append local]
>                   5]
>                 #[nil "\300\301\302\303\304$\207"
>                   [org-add-hook change-major-mode-hook
>                    org-babel-show-result-all append local]
>                   5]
>                 org-babel-result-hide-spec org-babel-hide-all-hashes)
>  org-ctrl-c-ctrl-c-hook '(org-babel-hash-at-point
>                          org-babel-execute-safely-maybe)
>  org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-hide-drawers
>                  org-cycle-show-empty-lines
>                  org-optimize-window-after-visibility-change)
>  org-export-latex-format-toc-function 'org-export-latex-format-toc-default
>  org-export-blocks '((src org-babel-exp-src-block nil)
>                     (comment org-export-blocks-format-comment t)
>                     (ditaa org-export-blocks-format-ditaa nil)
>                     (dot org-export-blocks-format-dot nil))
>  org-export-first-hook '(org-beamer-initialize-open-trackers)
>  org-export-interblocks '((lob org-babel-exp-lob-one-liners)
>                          (src org-babel-exp-inline-src-blocks))
>  org-confirm-elisp-link-function 'yes-or-no-p
>  org-metadown-hook '(org-babel-pop-to-session-maybe)
>  org-agenda-files '("/tmp/test.org")
>  org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
>  )
>