Re: Heading won't unfold on TAB if last line has just spaces, with empty line preceding.

[Kyle Meyer]

Giovanni Moretti writes:

> There's something weird with headings that can cause unfolding to fail. 
> Headings can 
> be folded with TAB refuse to unfold - they need Shift-TAB to see the 
> contents. This 
> is scary as it looks like content has been accidentally deleted whereas it's 
> really 
> just hidden.

Thanks for the report.  This looks to be the same issue as the one being
discussed at
https://orgmode.org/list/CAJj=8EFJXFu9ZQ11cO24AAu=1jykW2Zr+=R4FLuKG=bljfu...@mail.gmail.com/T/#u

Heading won't unfold on TAB if last line has just spaces, with empty line preceding.

[Giovanni Moretti]

There's something weird with headings that can cause unfolding to fail. Headings can 
be folded with TAB refuse to unfold - they need Shift-TAB to see the contents. This 
is scary as it looks like content has been accidentally deleted whereas it's really 
just hidden.


The TAB-cycling worked as expected in Org 9.1.9 for the following example but fails 
in 9.4.


The example below illustrates the difficulties:

 * Block 1 - you can delete X to leave two empty lines and TAB on "Block 1" (or 
1a)
   cycles as expected - GOOD!

But if the last line isn't empty but has spaces:

 * Block 2 - deleting X (leaving empty line) and then Z to leave the last line 
with
   just a space (one or more) and heading will fold on TAB /but won't unfold/.
   Shift-Tab is needed.
 * Block 3 - the same symptoms as Block 2 but has a subtree to show
   "Folded/Children/Subtree" when Tab-cycling on level one heading.

Cheers
Giovanni

===

* Block 1 - OK
Block 1 text

** Block 1a heading
Block 1a content
X
X
* BAD BLOCK 2 - Delete X & Z, then TAB WON'T UNFOLD
Block 2 content
X
 Z
* BAD BLOCK 3 - TAB WON'T UNFOLD
  Block 2 content

** BAD BLOCK 3a
   Block 3a content
X
 Z
* Block 4 - OK
The end