Well, if the cat lets you pet it it ain't too far from being un-feraled...
We have one on our farm and what folks have told us is that as long as we have him he'll keep the others away, which BTW, he has done for the entire last year that he has been here but...
... no matter, he ain't goin' go for no pettin'... That's kinda the line between feral and domesticated...
Enjoy your kitty... Be sure to get its shots and fixed and all that...