c-style for loop

src/circle_path.scad

@@ -17,6 +17,6 @@ function circle_path(radius, n) =
         end_a = 360 - step_a * ((is_undef(n) || n > _frags) ? 1 : _frags - n + 1)
     )
     [
-        for(a = [0 : step_a : end_a]) 
+        for(a = 0; a <= end_a; a = a + step_a)
             [radius * cos(a), radius * sin(a)]
     ];