Re: Does secondary filtering allow multiple tags?

From: Carsten Dominik <dominik@science.uva.nl>
To: Hsiu-Khuern Tang <hsiu-khuern.tang@hp.com>
Cc: "emacs-orgmode@gnu.org" <emacs-orgmode@gnu.org>
Subject: Re: Does secondary filtering allow multiple tags?
Date: Sat, 10 Jan 2009 12:12:44 +0100	[thread overview]
Message-ID: <7E3B0BA7-E3AD-43A4-9CDF-5CC179A3A387@uva.nl> (raw)
In-Reply-To: <20090109191823.GR24132@hplhtang1>

Hi Hsiu,

nice hack.  But I am still wondering why you do not
use "primary filtering" for this, i.e. a tags search
for "project1|project2"

     C-c a m project1|project2 RET

- Carsten

On Jan 9, 2009, at 8:18 PM, Hsiu-Khuern Tang wrote:

> * On Fri 07:38AM +0000, 09 Jan 2009, Carsten Dominik (dominik@science.uva.nl 
> ) wrote:
>>
>> On Jan 9, 2009, at 2:55 AM, Hsiu-Khuern Tang wrote:
>>
>>> Hi all,
>>>
>>> Suppose I have tagged some of my TODO headings.  In an agenda view,
>>> is it
>>> currently possible to filter (using org-agenda-filter-by-tag) all
>>> entries that
>>> are tagged with (say) either "project1" _or_ "project2"?  One can
>>> certainly do
>>> "project1" _and_ "project2" by narrowing the filter.
>>
>> No.
>>
>> - Carsten
>
> Here's a workaround.  I use org-map-entries to select all headlines  
> directly
> tagged with "project1" or "project2" and tag them with something  
> unique, say
> "CUR".  Then I can use the ordinary filter mechanism in an agenda  
> view to
> restrict to headlines tagged with "CUR".
>
> ,----
> | (setq cur_tags '("project1" "project2"))
> |
> | ;; Unbind the variable
> | ;; (makunbound 'cur_tags)
> |
> | (setq match_string (concat "+TAGS={" (mapconcat (lambda (x) x)
> | 						cur_tags "\|") "}"))
> |
> | ;; Remove the "CUR" tag:
> | (org-map-entries '(org-toggle-tag "CUR") "CUR" 'agenda)
> |
> | ;; Turn on the CUR tag for all headlines (directly) tagged with
> | ;; any member of cur_tags
> | (org-map-entries '(org-toggle-tag "CUR" 'on) match_string 'agenda)
> |
> | ;; Count the number of headlines (directly) tagged with any member  
> of
> | ;; cur_tags:
> | (length (org-map-entries t match_string 'agenda))
> `----
>
> Maybe someone will find this useful, or think of a more elegant  
> solution.
>
> -- 
> Best,
> Hsiu-Khuern.
>
>
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