bug#44297: [Feature request] project.el: Additional utility functions

[Juri Linkov]

>> file.html, file.js and file.css.
>
> OK.
>
> How will we choose among multiple files when there are more than 2?
> Completing read on the file extension? Or just rotate among the files in
> a pre-defined order?

The convenience of rotating will degrade with increase of the number of found 
files.
But maybe rotating among 3 files would be fine.

>>> A fuzzy search across full names works best for me, personally. We could
>>> also try some differently weighted, fuzzy matching styles.
>> I don't know if the required completion can be part of a fuzzy search,
>> but it should show exactly the same completions as the current command
>> (with directory and file names), but should match only on file name parts,
>> not on directory name parts, e.g. with files:
>>    dirname/filename1 dirname/file2
>> typing "name" for completions should show only "dirname/filename1",
>> because most of the time, project directory names get in the way
>> when searching for a file by its name, and part of file name matches
>> directory names with many other unrelated files.
>
> So... suppose the user types out a file name in full and sees several
> matches (in different directories). What happens then?

The user then selects one of them to visit.