This is an interesting hack, and it does solve what Eraldo was asking  
for.

However, I also think that using the outline hierarchy to file things
properly, and in this way making use of the existing tag inheritance,
is a very good alternative, as described by Peter Jones and by Manish
earlier in this thread.

- Carsten

On Mar 31, 2009, at 11:25 PM, Konstantin Antipin wrote:

> Peter Jones - thanks for the advise. Unfortunately it does not fit to
> me, since I have my todo items in different files.
>
> Eraldo - I was also thinking about this, but I thought that maybe
> solution already exists...
>
> Anyhow, for my it is fixed - I wrote a small package org-assoc-tags,
> that allows to have key-tag and associated tags. For example:
>
> (setq org-assoc-tags '(
> 		       ("emacs" "tech")
> 		       ("orgmode" "emacs" "tech")
> 		       ))
>
> If you assign :emacs: tag, then :tech: will be assigned automatically.
> If you assign :orgmode: tag, then both :emacs: and :tech: will be  
> assigned.
> The package can be found at: http://www.emacswiki.org/emacs/org-assoc-tags.el
>
> Hopefully it might be helpful for someone,
> Kostya
>
> On Mon, Mar 30, 2009 at 6:25 PM, Eraldo Helal <admin@eraldo.at> wrote:
>>
>> Hi Kostya!
>>
>> I am still pretty new to emacs and org-mode, but from what I have  
>> read until now...
>> Could you use the tag hook to automatically assign the :tech: tag  
>> along with :firefox: and|or :emacs: etc...
>> This is still not exactly what you wished afaics, but it may make  
>> things a little more convenient.
>>
>> On Mon, Mar 30, 2009 at 16:47, Konstantin Antipin <antipin.konstantin@googlemail.com 
>> > wrote:
>>>
>>> Hi,
>>>
>>> Manish - thank you for the reply.
>>>
>>> Here is what I want in details:
>>> For example, I have following  
>>> tags :tech: :firefox: :emacs: :orgmode:
>>> In agenda I usually ask only for TODO with :tech: tags, in order  
>>> to see actions, related to technical stuff.
>>>
>>> clearly, :firefox: and :emacs: are related to :tech: tag. It would  
>>> be convenient to introduce tag hierarchy:
>>> every todo-item with :emacs: (or :firefox: ) tag only should show  
>>> up in agenda, when I query for :tech: tag.
>>> I understand, that every time I assign :emacs: tag I can  
>>> assign :tech: tag as well, and this will do the work, but it is  
>>> not convenient.
>>>
>>>
>>> Is such mechanism exists?
>>>
>>> My todo's are scatterd over the files, thus I can not use usual  
>>> tag hierarchy, that is controlled by, for example, "org-use-tag- 
>>> inheritance".
>>>
>>> thanks,
>>> Kostya
>>>
>>> On Mon, Mar 30, 2009 at 1:09 PM, Manish <mailtomanish.sharma@gmail.com 
>>> > wrote:
>>>>
>>>>  On Sat, Mar 28, 2009 at 6:59 PM, Konstantin Antipin wrote:
>>>>  > Dear org-users,
>>>>  > Is there any way to make tags inherited from another tag?
>>>>  > For example, I have following tags:
>>>>  > :tech:
>>>>  >  :emacs:
>>>>  >   :orgmode:
>>>>  >  :ubuntu:
>>>>  >
>>>>  > :other:
>>>>
>>>> Could you please a little elaborate more on this?  Also please  
>>>> take a
>>>> look at variable "org-use-tag-inheritance".
>>>>
>>>> --
>>>> Manish
>>>
>>>
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>>>
>>
>
>
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