I like the ordinary arrow tip that you get in TikZ from
\draw [->] (a) to (b);. In my document I have lots of ordinary lines like this, and also lots of doubled lines like
\draw [double,->] (c) to (d);. But it looks a bit strange, since the arrow tips are different. I think it would look better if all the lines used the ordinary arrow tip.
So, here's my question: how can I get an arrow tip
myarrow such that
\draw [double distance=0.5pt,-myarrow] (c) to (d); gives me exactly the same arrow tip as with an ordinary line? I would like this to work for a range of values of
double distance, say less than 1pt.