Re: Unified project interface

[Dmitry Gutov <dgutov@yandex.ru>]

On 07/28/2015 02:05 PM, Stephen Leake wrote:

> I just realized project.el is in emacs master; I thought it was only in
> the experimental branch.

It would be cleaner to have it separate, but being able to dogfood it 
now is quite handy.

> So some specific change proposals:
>
> - Rename 'project-directories' to 'project-root-directories' or
>    'project-roots'.

Either is fine with me, but note that y having "root" in the name we 
give up on adding a special "project-root" function in the future, one 
that you described earlier.

 > The current project root should always be first in the list.

> - 'project-search-path' should not include 'project-root-directories'.

I say we document it like that (or say that it's "allowed not to 
include"), but the consumers will still take care of the duplication 
(call project--prune-directories). That's easier on the implementations.

> - 'elisp-search-path' should not include 'package-user-dir';
>    package-user-dir is not an elisp source directory, and load-path
>    already includes the subdirs of it, if packages are initialized.

What's the harm? It's an optimization: this way, we only call 'find' 
once per elpa dir, instead of doing it for each installed package. Not 
sure what's the overhead on that, but it seems wasteful.