Re: C-x 4 a ceased to work in *cvs-diff* buffer

[Richard Stallman]

    I used to do `=' on a file in a *cvs* buffer, then position point on
    a change in the resulting *cvs-diff* buffer, then hit C-x 4 a to
    compose a ChangeLog entry.

    Now this doesn't find the file anymore and asks me which file is
    meant.  It suggests the root directory of the working copy, instead
    of the subdir that contains the file.

I would guess that the recent redesign of M-x compile broke this.
Could the people involved please take a look?