I believe that you can achieve what you want with minChars attribute of autocomplete. Try to set it to 0.
For more information about components attributes you can check also:
Is that working for you ?
Hi Juraj, I've already tried this but it seems that the
minimum value for 'minChars' is '1' and the autocomplete method is called the 1st time when 'minChars +1' is reached.
It's like a combination of
So I guess I've to file a bug as well.