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[Orgmode] possible bug with headline visibility cycling and whitespace

From: Brian van den Broek
Subject: [Orgmode] possible bug with headline visibility cycling and whitespace
Date: Wed, 15 Aug 2007 12:45:45 -0400
User-agent: Thunderbird (X11/20070604)

Hi all,

I'm still new enough to org-mode that the problem might be with my understanding, rather than the code. But, I have a situation where org-mode doesn't behave as I expect.

To reproduce my problem, create the following org-mode file:

<Start of file>

* Heading Level One

** Heading Level Two

*** TODO Try to unfold this tree

* Heading Level One again

<End of File>

Everything between the start and end of file marks is needed, including the whitespace included on the lines after the 2nd- and 3rd-level headings. (Note that this is more than just the newline characters; there are space characters on those lines as well.) Do not include the start and end of file marks.

Now, visit this org-mode file; it displays a blank line, the first three headings (with ellipsis), a blank line, and the final heading, as expected. Put the cursor on the first line, and <TAB> cycle so that only the two top-level headings are displayed. So far, so good.

Now, put the cursor on the first top-level heading. Attempt to <TAB> cycle. Observe that nothing happens. What was expected was cycling through the various displays of the subtree. <TAB> cycling on the top of the file still works as expected, as do S-<TAB> and C-u <TAB>.

Edit the file so as to remove all whitespace other than newlines from the various headlines that have them. Now, <TAB> cycling works as expected.

So, it appears that headlines followed only by whitespace where that whitespace includes more than newlines breaks <TAB> cycling. This feels like a bug to me, but again, it might be that I misunderstand how org-mode is intended to work.

I am using GNU Emacs on ubuntu 7.04 and have org-mode 5.04 (the same behaviour was manifest in 5.03). I have a number of org-mode tweaks in my .emacs, but nothing that I can recognize as related.

Thanks and best,

Brian vdB

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