Re: bug: Xemacs problem with editing headings with compressed contents

[Carsten Dominik <dominik@science.uva.nl>]

I have looked into it further, it is a bug in the move-to-column  
function
in XEmacs that does not behave well in combination with hidden text,
when the FORCE argument is given.

Maybe you can try to write a replacement that will work?

- Carsten
On Feb 26, 2008, at 6:13 PM, Tim O'Callaghan wrote:

> Hi.
>
> There is some problem with tags and headings. I've had instances where
> the tag has disappeared or merged into my heading.
>
> Repeatable with Xemacs 21.4.19 i586-pc-win32, org 5.22a using this  
> fragment:
> -----
>
> * REAEARCH memory problems on oxo50                     :proj:
> *** WAIT korstian to organise a meeting.
> -----
>
> If i try to add the S into the heading when it is folded, then it
> generates the error "Visible portion of buffer not modifiable".
> Debugger gives:
>
> Debugger entered--Lisp error: (error "Visible portion of buffer not  
> modifiable")
>  move-to-column(70 t)
>  (progn (setq tags (match-string 2)) (goto-char (match-beginning 1))
> (insert " ") (delete-region (point) (1+ ...)) (backward-char 1)
> (move-to-column (max ... ... ...) t) (insert tags) (move-to-column
> (min ... col) t))
>  (if (and (looking-at ...) (< pos ...)) (progn (setq tags ...)
> (goto-char ...) (insert " ") (delete-region ... ...) (backward-char 1)
> (move-to-column ... t) (insert tags) (move-to-column ... t))
> (goto-char pos))
>  (let ((pos ...) (col ...) tags) (beginning-of-line 1) (if (and ...
> ...) (progn ... ... ... ... ... ... ... ...) (goto-char pos)))
>  org-align-tags-here(70)
>  (if (and (equal ... ?*) (org-on-heading-p)) (org-align-tags-here
> org-tags-column))
>  (when (and (equal ... ?*) (org-on-heading-p)) (org-align-tags-here
> org-tags-column))
>  org-fix-tags-on-the-fly()
>  (if (and (org-table-p) (progn ... t) (eq N 1) (looking-at "[^|\n]*
> |")) (let (org-table-may-need-update) (goto-char ...)
> (delete-backward-char 1) (goto-char ...) (self-insert-command N))
> (setq org-table-may-need-update t) (self-insert-command N)
> (org-fix-tags-on-the-fly))
>  org-self-insert-command(1)
>  call-interactively(org-self-insert-command)
>  recursive-edit()
>  debug(error (error "Visible portion of buffer not modifiable"))
>  move-to-column(70 t)
>  (progn (setq tags (match-string 2)) (goto-char (match-beginning 1))
> (insert " ") (delete-region (point) (1+ ...)) (backward-char 1)
> (move-to-column (max ... ... ...) t) (insert tags) (move-to-column
> (min ... col) t))
>  (if (and (looking-at ...) (< pos ...)) (progn (setq tags ...)
> (goto-char ...) (insert " ") (delete-region ... ...) (backward-char 1)
> (move-to-column ... t) (insert tags) (move-to-column ... t))
> (goto-char pos))
>  (let ((pos ...) (col ...) tags) (beginning-of-line 1) (if (and ...
> ...) (progn ... ... ... ... ... ... ... ...) (goto-char pos)))
>  org-align-tags-here(70)
>  (if (and (equal ... ?*) (org-on-heading-p)) (org-align-tags-here
> org-tags-column))
>  (when (and (equal ... ?*) (org-on-heading-p)) (org-align-tags-here
> org-tags-column))
>  org-fix-tags-on-the-fly()
>  (if (and (org-table-p) (progn ... t) (eq N 1) (looking-at "[^|\n]*
> |")) (let (org-table-may-need-update) (goto-char ...)
> (delete-backward-char 1) (goto-char ...) (self-insert-command N))
> (setq org-table-may-need-update t) (self-insert-command N)
> (org-fix-tags-on-the-fly))
>  org-self-insert-command(1)
>  call-interactively(org-self-insert-command)
>
> Tim.
>
>
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