merge.ff with and squash merge

If I do this:

$ git config merge.ff false

And then:

$ git merge --squash topic

I get:

fatal: You cannot combine --squash with --no-ff.

I can work around this by executing:

$ git merge --squash --ff topic

Which essentially negates the `merge.ff` configuration. In this
scenario, wouldn't it make sense for `--squash` to always imply
`--ff`? I mean, I think the configuration is there to help me in the
general case, but when I state I want a squash merge I'm pretty
explicitly asking for a commit and not a fast forward.

Thoughts?