Re: [O] org-tree-slide annoyance

[Ishikawa Takaaki]

Hi Henry,

Thank you for using org-tree-slide and reporting the issue.

Please use the following patch to avoid the error.

PATCH: 

Replace the original code with

----

(defun ots-display-tree-with-narrow ()

  "Show a tree with narrowing and also set a header at the head of slide."

  (goto-char (point-at-bol))

  (when (ots-last-heading-position)

    (hide-subtree) ; support CONTENT (subtrees are shown)

    (org-show-entry)

    (show-children)

    (org-cycle-hide-drawers 'all)

    (org-narrow-to-subtree))

  (setq display-tree-slide-string

(if (equal org-tree-slide-modeline-display 'outside)

   (ots-count-slide (point))

 ""))

  (when org-tree-slide-slide-in-effect

    (ots-slide-in org-tree-slide-slide-in-brank-lines))

  (when org-tree-slide-header

    (ots-show-slide-header)))

----

This patch is a tentative code for checking behavior in your environments,

but I think you will be able to open org files without heading.

I'll update it again within a few days.

Best,

Takaaki

2013/7/15 Nick Dokos <address@hidden>

henry atts <address@hidden> writes:

> Carsten Dominik <address@hidden> writes:
>
>> On 15.7.2013, at 10:33, henry atts <address@hidden> wrote:
>>
>>> I use org-tree-slide-mode by default with
>>>
>>>  (add-hook 'org-mode-hook 'org-tree-slide-mode)
>>>
>>> This works kind of acceptable minus some minor annoyances. But one thing
>>> makes it nearly unusuable. tree-slide rigidly expects at least one
>>> header. So if I open an org file without heading, or if I create a new
>>> one, I get an error message:
>>>
>>> File mode specification error: (error "before first heading")
>>>
>>> If I include a setup file with `#+SETUPFILE:', which of course has no
>>> headings in it,  org-tree-slide stops working at all.
>>
>>
>> Hi Henry,
>>
>> you could wrap turning on of the mode into a function
>> that checks if there is a node, and if not, just add one.
>>
>> - Carsten
>
> Okay, but on the one hand this doesn't solve the problem with
> `SETUPFILE'. On the other hand what if I want an org file without any
> heading on purpose? Or otherwise asked is a file a `real' org file only
> if it has headings in it?
>

No, I don't think so, but there are bugs (there was a bug in the latex
exporter once that required a heading at the beginning). I presume
Carsten's suggestion was as a workaround to a bug (although I might
have misinterpreted his comment).

> You might say if you want some features of orgmode _and_ an org file
> without heading you can always use, say, text-mode and load orgstruct as
> a minor mode. Which does not solve the problem as well because with the
> org-tree-mode hook for orgmode it shows some strange behaviour equally.
>
> I like org-tree-mode but I think it does not play well with orgmode in
> some cases. And as far as I see it even is not in contrib.
>

Yes, I went looking for it there and did not find it :-) So maybe you
can ping the author about the bug - s/he might even fix it, particularly
now that the package is being used by at least one other person! Or
contribute the fix yourself - if you like the package, then others might
too, so it might even end up in contrib at some point.

--
Nick