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From: Ilya Shlyakhter <ilya_shl@alum.mit.edu>
To: emacs-orgmode <emacs-orgmode@gnu.org>
Subject: Re: org-scan-tags
Date: Wed, 15 Sep 2010 10:36:09 -0400	[thread overview]
Message-ID: <AANLkTi=J2ut4wiiiNt93mH2mfiY23ZWwXGzTjF6Ej8kE@mail.gmail.com> (raw)
In-Reply-To: <AANLkTinghT-fKTLVR9Mz9a3hrXUNu-f-XW8GjU8-0H9p@mail.gmail.com>

Another question: if org-map-continue-from is used to skip parts of
the file, could that affect
the correctness of org-scanner-tags?  I.e. is any code that sets
org-map-continue-from
also responsible for updating org-scanner-tags?

thanks,

ilya

On Tue, Sep 14, 2010 at 11:19 PM, Ilya Shlyakhter <ilya_shl@alum.mit.edu> wrote:
> In org-scan-tags, if todo-only is t, would it be possible to speed
> things up by changingthe regexp go to just the lines with a TODO
> keyword?
> I.e. in
>
>  (let* ((re (concat "^" outline-regexp " *\\(\\<\\("
>                     (mapconcat 'regexp-quote org-todo-keywords-1 "\\|")
>                     (org-re
>                      "\\>\\)\\)? *\\(.*?\\)\\(:[[:alnum:]_@:]+:\\)?[ \t]*$")))
>
> remove the first "?" if todo-only is t.   Also, regexp-opt might make
> a more efficient regexp than mapconcat with regexp-quote.
>
> Reason for request:  I'm writing an extension of org for setting &
> checking goals, and want to quickly find entries with headlines of the
> form
>    GOAL ....
> of which there may be relatively few in a large file.   So, stepping
> through all entries and then checking them for the GOAL keyword is
> very inefficient.
> It would be much faster if the regexp included the GOAL as a keyword.
>
> It would be good if the parameter todo-only could be a list of
> strings, and org-scan-tags would return only the headlines where the
> todo keyword is from this list.
> It could use regexp-opt to make an efficient regexp for this.
>
> There also seem to be other opportunities for speeding up
> org-scan-tags in this way: e.g. if the match string includes +mytag,
> the regexp for the headline could include this as well.
> Similarly for properties.  Maybe, org-make-tags-matcher could return a
> list of tags and properties that must appear in any matching entry.
>
> It would also help if the tags matcher expression could refer to text
> properties stored on the headline -- perhaps, with conditions such as
> :myprop=X  (i.e. same as for org properties, but property name must be
> a keyword).   It already does this for the 'org-category text
> property.
>  Then one can e.g. mark entries representing unmet goals with text
> properties, and then use a regular org-tags-view to browse them in a
> sparsetree
> or an agenda.
>
> Thanks,
>
> ilya
>

next prev parent reply	other threads:[~2010-09-15 14:36 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-15  3:19 org-scan-tags Ilya Shlyakhter
2010-09-15 14:36 ` Ilya Shlyakhter [this message]
2010-09-15 16:13 ` org-scan-tags Ilya Shlyakhter
2011-02-02 23:17 ` org-scan-tags Bastien
2011-02-03  5:32 ` org-scan-tags Carsten Dominik
2011-02-03 16:13   ` org-scan-tags Carsten Dominik
2011-02-03 16:37     ` org-scan-tags Bastien
2011-02-03 16:47       ` org-scan-tags Carsten Dominik
2011-02-05  0:36       ` org-scan-tags Ilya Shlyakhter

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