* lisp/org-clock.el (org-clock-special-range): Handle `untilnow'
range.
(org-clock--oldest-date): New variable.
(org-clock-display-default-range): Add `untilnow' as valid range. Use
new variable.
(org-clock-display): Offer `untilnow' as a possible range.
* doc/org.texi (The clock table): Document `untilnow'
* testing/lisp/test-org-clock.el (test-org-clock-clocktable-contents-at-point): Fix test
when called interactively.
(test-org-clock/clocktable):
(test-org-clock/clocktable1): Update tests.
(test-org-clock/clocktable-until-now): New test.
* etc/ORG-NEWS (title): Document new feature.
Suggested-by: Sébastien Vauban
* testing/lisp/test-org-clock.el (test-org-clock/clocktable): New
function, refactor the original test sequence.
(test-org-clock/clocktable1, test-org-clock/clocktable2): New tests
using the new function.
ert-deftest is a macro. Let-binding a defvar before it is defined
causes the variable to be undefined later on, so the second test
fails for Emacsen that do not perform eager macro expansion.
* testing/lisp/test-org-clock.el (test-org-clock/clocktable): The last test
for clocktables introduced in commit 6642177 did not work if the test was
run before 15:00 due to the end time being specified as "<now>" (which
includes the current time of day and not just the date). The obvious
"<today>" does also not work since it means 0:00 of the current day. The
correct specification to use is "<tomorrow>", which is 0:00 the following
day or equivalently the end of today, 24:00.