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From: Ilya Shlyakhter <ilya_shl@alum.mit.edu>
To: emacs-orgmode <emacs-orgmode@gnu.org>
Subject: org-scan-tags
Date: Tue, 14 Sep 2010 23:19:21 -0400	[thread overview]
Message-ID: <AANLkTinghT-fKTLVR9Mz9a3hrXUNu-f-XW8GjU8-0H9p@mail.gmail.com> (raw)

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             reply	other threads:[~2010-09-15  3:19 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-15  3:19 Ilya Shlyakhter [this message]
2010-09-15 14:36 ` org-scan-tags Ilya Shlyakhter
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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