GNU bug report logs - #41821
28.0.50; read-directory-name in vc commands should provide defaults from projects

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Message #20 received at 41821 <at> debbugs.gnu.org (full text, mbox):

From: Dmitry Gutov <dgutov <at> yandex.ru>
To: Juri Linkov <juri <at> linkov.net>
Cc: 41821 <at> debbugs.gnu.org
Subject: Re: bug#41821: 28.0.50; read-directory-name in vc commands should
 provide defaults from projects
Date: Sun, 21 Jun 2020 03:12:22 +0300

On 21.06.2020 02:51, Juri Linkov wrote:
>>> Maybe something like:
>>
>> Not too bad.
>>
>> Though I'd rather not extend the public contract of project.el with
>> a function that special-cases VC projects.
>>
>> So maybe something like this instead:
>>
>> +;; Or use project-try-vc after all. But this should be faster in the
>> +;; event when there actually are non-VC based projects in the list.
>> +(defun vc--known-vc-roots ()
>> +  (require 'project)
>> +  (defvar project--list)
>> +  (project--ensure-read-project-list)
> 
> Calling internal project.el functions from vc.el?  Really?

The alternative would be to create a function like that in project.el.

But I hesitate to make it public, sorry.

>> Personally, though, when I want behavior like this, I would probably just
>> type 'C-x p v'.
> 
> 'C-x p v' is not a replacement for 'C-x v L'.

'C-x p v L', then?

>> The directory name reading with completion performed by
>> project-prompt-project-dir is more quick and handy (though I'll confess
>> to using Ivy as the completion UI for this and one other function; vertical
>> completion fits these long string values best).
> 
> 'M-n' works fine without Ivy to select a recent project dir.

Just saying what works better for me.

>> It also puts the selected project on the top of the list, which
>> vc--known-vc-roots (or your function) don't do.
> 
> I don't understand what is the selected project.  The current project?

When you select a project to use, the prompting subroutine 
(project-prompt-project-dir) re-sorts the saved list of project. It is 
somewhat of an argument to only go through this UI when one needs to 
select a project to use.

> Then neither 'C-x p v', nor 'C-x v L' should ask for a project directory
> when called from default-directory of the current project.

Not sure what you mean. I think they don't? When called inside a project.

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