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From: Dmitry Gutov <dgutov@yandex.ru>
To: Juri Linkov <juri@linkov.net>
Cc: Lars Ingebrigtsen <larsi@gnus.org>, 34949@debbugs.gnu.org
Subject: bug#34949: 27.0.50; Docstring of `vc-deduce-fileset' incomplete
Date: Wed, 19 Feb 2020 00:27:12 +0200	[thread overview]
Message-ID: <5d2163b9-4bf4-e072-ef9e-0fc1550a2108@yandex.ru> (raw)
In-Reply-To: <87zhdghjca.fsf@mail.linkov.net>

On 18.02.2020 1:42, Juri Linkov wrote:

> The difficultly comes from the need to get a VC state from every marked file
> and to confirm that all marked files are in the same state.

Makes sense, that was my second guess.

> So I implemented this in vc-dired-deduce-fileset whose basic
> algorithm was taken from vc-dir-deduce-fileset.
> 
> Now with this patch state changing VC operations are supported on marked
> _files_ in dired.

TBH, I'm not sure this is a win (we have VC-Dir for a reason), but if 
you really want to be able to do that in Dired, why not. Please feel 
free to install this.

> However, the need for the OBSERVER arg still remains because this patch
> doesn't support state changing VC operations on marked _directories_ in dired.
> It raises the error in this case:
> 
>    State changing VC operations on directories not supported in `dired-mode'
> 
> State changing VC operations could be supported on directories as well,
> but there are several possibilities to choose from, and I can't decide:
> 
> 1. On a marked directory get a state from all its files
>     (probably this variant makes no sense)
> 
> 2. On a marked directory get only files with a "modified" state
>     (i.e. edited/added/removed)

You can check out what diff-hl-dired does in this regard (and it does 
use the dir-status-files command), though you would need to do something 
else than its merging logic.

That still leaves the downside (compared to VC-Dir) of being unable to 
select individual files in subdirectories, but that's not fixable, I guess.

> But the latter is not easy to implement because the needed functionality
> is missing in VC, because the only VC method that is suitable for this is
> 'dir-status-files' to get VC files from a directory but it's too tightly
> integrated with vc-dir and can't be easily separated, i.e. there is
> no easy way to do something like:
> 
>    (with-temp-buffer
>      (vc-call-backend
>       (vc-responsible-backend default-directory) 'dir-status-files default-directory nil
>       (lambda (entries &optional more-to-come)
>         (message "! %S" entries))))

I think the only possible problem here is that lambda is invoked 
asynchronously. But we can sleep while waiting for it.





  reply	other threads:[~2020-02-18 22:27 UTC|newest]

Thread overview: 69+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-22 17:50 bug#34949: 27.0.50; Docstring of `vc-deduce-fileset' incomplete Philipp Stephani
2019-10-09 22:40 ` Lars Ingebrigtsen
2019-12-24 19:53   ` Dmitry Gutov
2019-12-24 23:28     ` Juri Linkov
2020-02-17 23:42       ` Juri Linkov
2020-02-18 22:27         ` Dmitry Gutov [this message]
2020-02-18 23:36           ` Juri Linkov
2020-02-20 23:14             ` Juri Linkov
2020-02-21  0:22               ` Dmitry Gutov
2020-02-23  0:04                 ` Juri Linkov
2020-02-23  9:01                   ` Dmitry Gutov
2020-02-23 23:25                     ` Juri Linkov
2020-02-24  0:17                       ` Dmitry Gutov
2020-02-25  0:12                         ` Juri Linkov
2020-02-25 10:32                           ` Dmitry Gutov
2020-02-25 21:23                             ` Juri Linkov
2020-02-26 22:49                               ` Dmitry Gutov
2020-02-26 23:46                                 ` Juri Linkov
2020-02-27  7:28                                   ` Dmitry Gutov
2020-02-27 23:15                                     ` Juri Linkov
2020-02-28 19:22                                       ` Dmitry Gutov
2020-02-29 21:25                                         ` Juri Linkov
2020-02-29 22:25                                           ` Dmitry Gutov
2020-03-09 22:55                                             ` Juri Linkov
2020-03-12  0:08                                               ` Dmitry Gutov
2020-03-12  0:41                                                 ` Juri Linkov
2020-03-12 22:43                                                   ` Juri Linkov
2020-03-13 12:11                                                     ` Dmitry Gutov
2020-03-14 23:31                                                       ` Juri Linkov
2020-03-15 21:54                                                         ` Dmitry Gutov
2020-03-15 23:58                                                           ` Juri Linkov
2020-03-16 20:17                                                             ` Dmitry Gutov
2020-03-24 22:16                                                               ` Juri Linkov
2020-03-25 20:47                                                                 ` Juri Linkov
2020-03-25 21:32                                                                   ` Dmitry Gutov
2020-03-29 22:35                                                                     ` Juri Linkov
2020-03-30 19:53                                                                       ` Dmitry Gutov
2020-03-24 22:36                                                               ` Juri Linkov
2020-03-25 20:59                                                                 ` Juri Linkov
2020-03-25 21:15                                                                   ` Drew Adams
2020-03-25 21:50                                                                     ` Juri Linkov
2020-03-25 22:04                                                                       ` Drew Adams
2020-03-26 23:18                                                                         ` Juri Linkov
2020-03-27 16:11                                                                           ` Drew Adams
2020-03-27 22:41                                                                   ` Dmitry Gutov
2020-03-28 23:54                                                                     ` Juri Linkov
2020-03-29 18:41                                                                       ` Dmitry Gutov
2020-03-29 22:27                                                                         ` Juri Linkov
2020-03-30 20:01                                                                           ` Dmitry Gutov
2020-03-30 22:40                                                                             ` Juri Linkov
2020-03-30 23:22                                                                               ` Dmitry Gutov
2020-03-31  1:02                                                                               ` Drew Adams
2020-04-02 22:08                                                                             ` Juri Linkov
2020-04-03  0:21                                                                               ` Dmitry Gutov
2020-04-03 20:08                                                                               ` Philipp Stephani
2020-04-04 23:37                                                                                 ` Juri Linkov
2020-04-05  9:47                                                                                   ` Philipp Stephani
2020-04-05 23:05                                                                                     ` Juri Linkov
2020-04-09  8:41                                                                                   ` Eli Zaretskii
2020-04-11 23:38                                                                                     ` Juri Linkov
2020-04-12  6:33                                                                                       ` Eli Zaretskii
2020-04-12 23:51                                                                                         ` Juri Linkov
2020-04-13  4:31                                                                                           ` Eli Zaretskii
2020-04-13 23:25                                                                                             ` Juri Linkov
2020-03-25 21:59                                                                 ` Dmitry Gutov
2020-03-26 23:10                                                                   ` Juri Linkov
2020-03-26 23:51                                                                     ` Dmitry Gutov
2020-02-21  0:16             ` Dmitry Gutov
2019-12-25 21:45     ` Lars Ingebrigtsen

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