[Templates] SET with FILTER?

[Tony Bowden]

This obviously works:

[%
  SET foo = "Video & DVD";
  foo | html;
%]

This, which would seem obvious, (silently) doesn't:

[%
  SET foo = "Video & DVD";
  SET bar = foo | html;
  bar;
%]

So, how are you meant to do the second one? I've tried a few variations,
but to no avail...

Tony