I see the problem is that htdig is not supported and maintained, yet to properly work, khelpcenter should depend on it. I don't think Kubuntu should depend on something unmaintained, but I think it is detrimental to Ubuntu to expose a feature that is non-functionnal.
I think the middle ground would be completely disabling the search feature if it cannot work, saying htdig should be installed. People would at least know this is not working, why it doesn't work, and how to make it work if they want to.
I see the problem is that htdig is not supported and maintained, yet to properly work, khelpcenter should depend on it. I don't think Kubuntu should depend on something unmaintained, but I think it is detrimental to Ubuntu to expose a feature that is non-functionnal.
I think the middle ground would be completely disabling the search feature if it cannot work, saying htdig should be installed. People would at least know this is not working, why it doesn't work, and how to make it work if they want to.