isDetachedHead fails with non-english locales

[DirtyHairy]

isDetachedHead parses git status output and looks for "HEAD detached at" Obviously, this fails for any non-english locale. I don't want to be a dick, but this is insanely brittle 😏

A possible improvement would be resetting LANG before running git. An even better solution would be checking the contents of .git/HEAD — this would avoid breakage from future changes of this message. I can provide a pull request if any of these changes would be OK with you.

[mattfarina]

@DirtyHairy you don't have to be a dick to point out a bug. I've written plenty of them.

[DirtyHairy]

😄 I was just trying to take the edge away from "insanely brittle". Anyway, the fix is easy enough, if you like, I can implement it and file a pull request.

[mattfarina]

@DirtyHairy in #32 I already proposed a fix. Any feedback?

[DirtyHairy]

Looks good to me.