bug#10489: 24.0.92; dired-do-copy may create infinite directory hierarchy

[Stefan Monnier]

>>> `files-equal-p' still returns t for two non-existing files. Shall be
>>> fixed too.
>> I don't see why that should be fixed: files-equal-p only works for
>> existing files.  If one or both of the files don't exist, the return
>> value is unspecified.  Oh, yes, the doc needs to be fixed to say it clearly.
> Why is this better than returning nil (which is easy to achieve)?

It's not.

> Because it doesn't matter?

Yup,


        Stefan