rebase autosquash doesn't recognise a chain of fixups

Hello,

 Say I have the following commits:

    5154127 fixup! fixup! one
    0d130d8 fixup! one
    0869d30 one

because I keep executing `git commit -a --fixup HEAD`. When I want to squash them all into 0869d30, I do `git rebase -i --autosquash 0869d30^` and I get

    pick 0869d30 one
    fixup 0d130d8 fixup! one
    pick 5154127 fixup! fixup! one

when I was hoping for

    pick 0869d30 one
    fixup 0d130d8 fixup! one
    fixup 5154127 fixup! fixup! one

Changing the options to the latter one works (as in, the patches apply). Is this expected? Am I just too lazy and should look up the commit I want to fixup?

   cmn