I'm trying to figure out how 'git subtree' works. I've followed all directions on this page, but I always get an error trying to merge the subtree project in my own repo ('Step 2'): fatal: refusing to merge unrelated histories.
I've read this post, and when I use the --allow-unrelated-histories option, it seems to work fine. However, I'm not sure whether I should use this...My impression is that the whole point of subtrees is to have unrelated histories within one repository, so it feels strange to have to add the option. Should I add it nevertheless, or am I doing something wrong?
I'm using git v2.9.3 on osx 10.11.6
This was a bug in git, it was fixed in https://github.com/git/git/commit/0f12c7d4d175bb0566208213b1b340b6794f305c