Re: should `minibuffer-complete' use `abbreviate-file-name'?

[Richard Stallman]

    For file-name completion, apply `abbreviate-file-name' to the user's input.
    This would let a user take advantage of a customized
    `directory-abbrev-alist' during completion.

    Would there be any downside to that?

I don't think Emacs should alter the names that the user enters.