'Return that range in the calltip of the "current" arg.
I.e. what argument is currently being entered.
"trg_pos" is the trigger position.
"calltip" is the full calltip text.
"curr_pos" is the current position in the buffer.
Returns a range: (start, end)
Set `start == -1` to cancel the calltip, i.e. if the entered text
has closed the call region.
The default implementation uses defers to the LangIntel
singleton for this language.'

def curr_calltip_arg_range(self, trg_pos, calltip, curr_pos, DEBUG=False):

    return self.langintel.curr_calltip_arg_range(self, trg_pos, calltip, curr_pos, DEBUG=DEBUG)
