"Why these settings aren't the default on Linux completely bewilders me. How does anyone conceive that the average user will not want reliable cut and paste between their editor and other apps? Certainly most users will not be willing or able to go through what I did to get this sorted out.
"The problem that I was seeing was that sometimes middle mouse click would work for cut and paste, and sometimes it wouldn't. It was very erratic, even within the same emacs session..."