From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michael Welle <mwe012008@gmx.net>
Subject: Re: how do I search state change dates?
Date: Wed, 02 Jan 2019 20:24:01 +0100
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References: <5a27130f-1c88-8fee-cd9b-0d46c138e0d1@binghamton.edu>
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In-Reply-To: <5a27130f-1c88-8fee-cd9b-0d46c138e0d1@binghamton.edu>
	(Christopher W. Ryan's message of "Tue, 1 Jan 2019 14:16:27 -0500")
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To: emacs-orgmode@gnu.org

Hello,

"Christopher W. Ryan" <cryan@binghamton.edu> writes:

> I try to keep track of books I want to read, and when I eventually read
> them.  I use TODO keyword for books I intend to read, and I change the
> state to READING and then DONE, as appropriate. Each state change gets a
> date/time stamp.
at [0] you will find a bit of code (org-task-dump-logs.el) that
retrieves all the log data for a given task. Maybe that is helpful if
you extend it with a loop that iterates over all tasks of a file.

Regards
hmw

[0] https://www.c0t0d0s0.de/otdl/otdl.html