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

[Dmitry Gutov <dgutov@yandex.ru>]

On 30.10.2020 09:23, Juri Linkov wrote:
>> I think the term is pretty much established:
>> https://www.emacswiki.org/emacs/FindOtherFile
>>
>> Projectile also has a command with a similar name.
> 
> Then the name 'other-file' is fine.
> 
>> The feature will be pretty C/C++-centric, but I suppose it's useful enough.
> 
> It's also useful with Web development: while VueJS can keep parts of
> components in one file .vue, other frameworks require 3 different files:
> 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?

>> 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?

>>>> project-recentf: completing-read recently-accessed files in the project
>>> All project file-reading commands could provide a list of recent files
>>> as the default values available via M-n key presses.
>>
>> Perhaps a flat, immediately visible list will have its own value, though?
> 
> Sorted by recency?

Yup.