[O] Bug: org-clock-sum-current-item/org-clock-get-sum-start not respecting LAST_REPEAT [9.0.9 (release_9.0.9-697-gb0776e @ /usr/local/share/emacs/site-lisp/org/)]

[Josh Moller-Mara]

Hey there,

Recently I've found that clocking in to a repeating task is giving me an
incorrect "task time since last repeat". Normally, when I clock into a task,
mark it as done, and clock in again, I expect the starting clock time to
be 0. In this example:

* TODO Stuff
  SCHEDULED: <2017-08-04 Fri +1d>
  :PROPERTIES:
  :LAST_REPEAT: [2017-07-12 Wed 20:02]
  :END:
  :LOGBOOK:
  - State "DONE"       from "TODO"       [2017-07-12 Wed 20:02]
  CLOCK: [2017-07-12 Wed 19:54]--[2017-07-12 Wed 20:02] =>  0:08
  - State "DONE"       from "TODO"       [2017-07-08 Sat 19:14]
  CLOCK: [2017-07-08 Sat 18:49]--[2017-07-08 Sat 19:14] =>  0:25
  - State "DONE"       from "TODO"       [2017-06-05 Mon 15:14]
  CLOCK: [2017-06-05 Mon 14:48]--[2017-06-05 Mon 15:14] =>  0:26
  :END:

clocking in reports that I've spent 8 minutes on the item already, even
though that happened before the LAST_REPEAT. When looking at
(org-clock-sum-current-item (org-clock-get-sum-start))
I'm getting "8" when I should get "0".

This change seems to have started happening after commit 112c5ba47,
which changed org-clock-sum to do something different with daylights
savings.

I'm currently using
Emacs  : GNU Emacs 26.0.50.2 (x86_64-pc-linux-gnu, GTK+ Version 3.22.5)
 of 2017-01-18
Package: Org mode version 9.0.9 (release_9.0.9-697-gb0776e @ 
/usr/local/share/emacs/site-lisp/org/)

Best,
Josh