[O] Prefix arguments, checklists, and lists

[Robert Horn]

The keystroke bindings for lists need some examination and repair.  In 7.9.3 
the situation is:

| Keystrokes          | First Item                        | Any other item      
      |
|---------------------+-----------------------------------+---------------------------|
| C-c C-c             | Toggle completion this item       | Toggle this item    
      |
| C-u C-c C-c         | Toggle checkbox on/off whole list | Toggle checkbox 
this item |
| C-u C-u C-c C-c     | Set in-progess whole list         | Set in-progress 
this item |
| M-- C-c C-c         | Toggle completion whole list      | Toggle this item    
      |
| M-- C-u C-c C-c     | Toggle completion whole list      | Toggle this item    
      |
| M-- C-u C-u C-c C-c | Toggle completion whole list      | Toggle this item    
      |


Is this what is really intended?  The present behavior has the odd result that 
there is no sequence to toggle presence of checkbox for the first item, and 
there is no sequence to set in-progress for the first item.  The first item 
must be manually edited.  (Or maybe there's another sequence that I haven't 
found.)

I think this is a bug.  But the intended behavior is unclear, and the proper 
fix is unclear. 

I personally find that I want to apply a change to individual items far more 
often than I want to change the whole list.  So I would pick the prefixes C-u 
and C-u C-u for the single item behavior in all cases, and add a different 
prefix to mean "apply to whole list".  Perhaps a numeric prefix of "-1"?  
That's not unreasonably hard to type.  Then toggling checkbox presence for the 
whole list would be M-- C-u C-c C-c, and toggling the whole list for 
in-progress would be M-- C-u C-u C-c C-c.  The user mental model becomes "M-- 
means apply to whole list", which means tracking down any other relevant 
commands and fixing them too. The current implementation is close to this.


R Horn
address@hidden