server action not executed on wkf activity with kind=flowstop

[Alexis de Lattre]

I am trying to send a mail when a holiday request is confirmed/accepted/refused, using the 'email_template' module. For that, I developped a small module "hr_holidays_mail", see enclosed.

It works well when the holiday request is confirmed and accepted, but it doesn't work when the holiday request is refused.

After some investigation, I found out that :

In addons-trunk/hr_holidays/hr_holidays_workflow.xml line 46 :

the workflow activity "refuse" is of kind 'stopall' (is was not the case in OpenERP 5.0 ; it is the case since OpenERP 6.0)

In server-trunk/openerp/workflow/workitem.py line 122 :

when kind == 'stopall', it doesn't consider the 'action_id' of the workflow activity.
Instead, if you look line 99, when kind == 'dummy' or 'function', you see this code which executes the server action :

if activity['action_id']:
    res2 = wkf_expr.execute_action(cr, ident, workitem, activity)
    if res2:
        stack.append(res2)
        result=res2

So, what is the good solution if I want to send an email when a holiday request is refused ?
1) in addons/hr_holidays, modify the kind of the workflow activity "refuse" from "stopall" to "dummy" ?
2) patch the server to execute the server action on an activity with kind = flowstop ?

All suggestions are welcomed !