Thanks for including nodes for arcs, this will be in my opinion helpful for many users.
However, there is one problem I came across to. Sometimes angles of the arc are calculated simultaneously, as in "\draw (60:1) arc (30+30:0:1);" This works fine by itself, but when combined with node command, one gets error
! Illegal unit of measure (pt inserted).
<to be="" read="" again="">
+
Is there any way round this problem?
\begin{tikzpicture}[>=stealth,auto]
\draw (60:3) -- (0,0) -- (0:3);
\draw (60:1) arc (30+30:0:1);
\draw (60:1) arc (30+30:0:1) node[midway] {$\beta$};
\end{tikzpicture}
Diff:
fixed in cvs