bug#66260: 29.0.92; project.el should support copying a file path relative to the project root

[Eshel Yaron]

Hi,

sbaugh@catern.com writes:

> Juri Linkov <juri@linkov.net> writes:
>> Sometimes an absolute path is needed too even in project directories.
>> Maybe it's possible to find a new prefix argument to copy
>> a project-root-relative path like 'C-u C-u w'?
>
> I initially considered M-1 w, but that loses the ability to mark files
> and then only copy one of them.  C-u C-u seems good.

FWIW I think a separate command and binding would be preferable, namely
`C-x p w`.  That'd leave `w` intact and clearly indicate the
project-related nature of the (new) command, so it's arguably more
intuitive than `C-u C-u w`.  We could also have that binding in
non-Dired buffers, and have it operate on the visited file.