Re: alter all subtrees containing specific tag

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

On Mar 8, 2009, at 5:31 AM, <news@aleblanc.cotse.net> <news@aleblanc.cotse.net 
 > wrote:

> Hi,
>   I use pgg to encrypt some org subtrees (e.g. the ones containing
>   passwords). At the moment I have to encrypt/decrypt them one at a
>   time by selecting the appropriate region and running
>   pgg-encrypt-region/pgg-decrypt-region.
>   I want to make a function that will automatically encrypt/decrypt  
> all
>   subtrees (in the current buffer) whose headings contain  
> an :ENCRYPT: tag.
>   I tried using org-map-entries, but it seems to restore the buffer to
>   its original state after returning.

No, org-map-entries should be perfect for this, and it does not  
restore the buffer.
This should really well.  The only thing that might happen, by  
replacing the
subtree, that it does not know correctly where to continue and  
therefore it might do
every tree twice?



>   Is there a quick way to get the start and end points of a subtree,  
> or
>   place region around it? and a quick way to jump to the next heading
>   with a given tag?


(org-mark-subtree)  ;; this will include the headline


(re-search-forward "^\\*+ .*?:ENCRYPT:" nil t)

- Carsten