[O] Clock history as autocomplete?

[Marcin Borkowski]

Hi there,

I use C-u C-c C-x C-i (selecting clocking task from the history) /all
the time/.  However, I would very much prefer entering the clocking task
with autocompletion, from a longer history, or even all headings that
already have a clock (I have (setq org-clock-history-length 20) in my
init.el, and sometimes it's not enough...).  Is that possible?

Best,

-- 
Marcin Borkowski
http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski
Faculty of Mathematics and Computer Science
Adam Mickiewicz University