bug#28513: 25.1; ido insists on guessing the wrong directory

[Dmitry Gutov]

On 17.12.2020 13:33, Lars Ingebrigtsen wrote:
> I've read the doc string again -- I didn't think the current behaviour
> was documented, but it is:
>
> ---
> If DEFAULT-FILENAME is omitted or
> nil, then if INITIAL is non-nil, the default is DIR combined with
> INITIAL; otherwise, if the current buffer is visiting a file,
> that file serves as the default; otherwise, the default is simply
> the string inserted into the minibuffer.
> ---

That's the doc for read-file-name, so another option would be to pass an 
explicit third argument from write-file to read-file-name.

> So it's documented that buffer-file-name is the default value, no matter
> what default-directory is.
>
> I guess the fix here has to be in ido itself, and it'll have to
> special-case write-file.
>
> [time passes]
>
> OK, now done in Emacs 28, and the test case now works better, and there
> probably shouldn't be a lot of regressions here...

But this works too. Thanks!