I took a look at this today. It seems there's a whole lot of history missing, unfortunately. And I'm unable to find anything close to a common point in history for the two repositories. I've asked Andreas about it, and he figures it might be the case that he had the missing history locally on a laptop at some point in time. In other words, I think we have to consider the chances of getting a clean history pretty slim.
I would suggest simply extracting and applying the desirable changes by hand. Though this of course requires a more thorough examination of what changes are desirable. I'm not familiar enough with the plugin to make any suggestions on this myself, but maybe @awiddersheim is (seeing as how he opened the issue with specific suggestions in the first place)? Still, I'd be happy to help out in the "porting" part, or general discussion, if needed. -- Reply to this email on GitHub: https://github.com/monitoring-plugins/monitoring-plugins/issues/1238#issuecomment-36895048
