SingalTap stop acqusition condition

I tried the following state-based trigger:

state ST1:
if (start_acq)
	goto ST2;
 
state ST2:
begin
	if( stop_acq && store ) 
	begin
		start_store;
		stop_store;
		trigger 0;
	end
	else if (stop_acq)
	begin
		trigger 0;
	end
	else if (store)
	begin
		start_store;
		stop_store;
	end
end

However, it doesn't work as expected:

• although I expected only a single acquisition window, SignalTap returns many (segments). One could still filter out only a single acquisition window, however, when waveform is dumped to a .csv files (for further analysis) the information about segments is lost
• even with post-fill-count argument of the trigger call set to 0, SignalTap waits for at least one valid sample. It means that if the sample doesn't occur, SignalTap will wait forever

EDIT: If I use `trigger 1`, it actually seems to work as intended. The only inconvenience is it needs to wait for an extra sample from the next acquisition window.