Doubleclick on region sets repeat on. How?

[enroe]

Doubleclick on region sets repeat on. How?

In the "Preferences --> Mouse-modifiers" you can
choose for "ruler" and "doubleclick":

--> "set looppoints and time selection to region"

-------------------------------------------------------------------------

This setting works well. It does:

(1) Doubleclick on a region sets "loop-selection and time-
selection under the region.
(2) Doubleclick on a region also places the edit-cursor to
the start of the region.

Additionally I want:

(3) The doubleclick on a region switches to "repeat on".

------------------------------------------------------------------------

My first attempt was to create a macro, but I couldn't find
the action for the normal behaviour (1) "--> loop-selection +
--> time-selection, (2) --> edit-cursor to start". For the
"repeat on" (3) I would use the lua-script suggested by Juliansader,
but for the first two (1)+(2) I didn't find an action in the
action-overview.

Is there a solution? Maybe a script I overlooked? Or a special
trick?