AW: Boilerplate revisited

...

data Foo = Foo Int String

and you're looking for Ints and transforming them, it will also recurse into the strings and look at every character, because it doesn't know that

Hm. That could be. I think the problem is that segment is

data Segemnt = Comp [Segment] Attributes

and 'everywhere (mkT f) seg' would also jump into the attributes, which is waisted effort. -- Markus