GNU bug report logs - #36911
26.1; Impossible to customise vc-ignore-dir-regexp

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Juliusz Chroboczek <jch <at> irif.fr>
To: bug-gnu-emacs <at> gnu.org
Subject: 26.1; Impossible to customise vc-ignore-dir-regexp
Date: Sat, 03 Aug 2019 20:44:09 +0200

I'm trying to disable vc in a directory (an sshfs mount).  The obvious
candidate is vc-ignore-dir-regexp:

> vc-ignore-dir-regexp is a variable defined in ‘vc-hooks.el’.
> Its value is
> "\\`\\(?:[\\/][\\/][^\\/]+[\\/]\\|/\\(?:net\\|afs\\|\\.\\.\\.\\)/\\)\\'"

It is essentially impossible for a normal user to customise this variable
without disabling the existing functionality.  So for now, it's

  (setq vc-handled-backends nil)

Regards,

-- Juliusz

Message #8 received at 36911 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Juliusz Chroboczek <jch <at> irif.fr>
Cc: 36911 <at> debbugs.gnu.org
Subject: Re: bug#36911: 26.1; Impossible to customise vc-ignore-dir-regexp
Date: Fri, 23 Aug 2019 06:58:42 +0200

Juliusz Chroboczek <jch <at> irif.fr> writes:

> I'm trying to disable vc in a directory (an sshfs mount).  The obvious
> candidate is vc-ignore-dir-regexp:
>
>> vc-ignore-dir-regexp is a variable defined in ‘vc-hooks.el’.
>> Its value is
>> "\\`\\(?:[\\/][\\/][^\\/]+[\\/]\\|/\\(?:net\\|afs\\|\\.\\.\\.\\)/\\)\\'"
>
> It is essentially impossible for a normal user to customise this variable
> without disabling the existing functionality.  So for now, it's
>
>   (setq vc-handled-backends nil)

I'm not sure why it's impossible to customise that variable?  You can
just set it to "/my/ignored/directory" and that should work.

(You'd lose the original value, which is about AFS and SMB mounts, which
may be a sensible default, but which isn't relevant to most people
working in GNU/Linux.)

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #13 received at 36911 <at> debbugs.gnu.org (full text, mbox):

From: Juliusz Chroboczek <jch <at> irif.fr>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 36911 <at> debbugs.gnu.org
Subject: Re: bug#36911: 26.1; Impossible to customise vc-ignore-dir-regexp
Date: Fri, 23 Aug 2019 15:08:43 +0200

Hi Lars,

>>> vc-ignore-dir-regexp is a variable defined in ‘vc-hooks.el’.
>>> Its value is
>>> "\\`\\(?:[\\/][\\/][^\\/]+[\\/]\\|/\\(?:net\\|afs\\|\\.\\.\\.\\)/\\)\\'"

>> It is essentially impossible for a normal user to customise this variable
>> without disabling the existing functionality.  So for now, it's
>> 
>> (setq vc-handled-backends nil)

> I'm not sure why it's impossible to customise that variable?  You can
> just set it to "/my/ignored/directory" and that should work.

> (You'd lose the original value, which is about AFS and SMB mounts, which
> may be a sensible default, but which isn't relevant to most people
> working in GNU/Linux.)

How am I supposed to know that?  I'm sure I'm not the only person afraid
to touch it.

-- Juliuszp

Message #16 received at 36911 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Juliusz Chroboczek <jch <at> irif.fr>
Cc: 36911 <at> debbugs.gnu.org
Subject: Re: bug#36911: 26.1; Impossible to customise vc-ignore-dir-regexp
Date: Sun, 25 Aug 2019 07:35:22 +0200

Juliusz Chroboczek <jch <at> irif.fr> writes:

>>>> vc-ignore-dir-regexp is a variable defined in ‘vc-hooks.el’.
>>>> Its value is
>>>> "\\`\\(?:[\\/][\\/][^\\/]+[\\/]\\|/\\(?:net\\|afs\\|\\.\\.\\.\\)/\\)\\'"

[...]

>> I'm not sure why it's impossible to customise that variable?  You can
>> just set it to "/my/ignored/directory" and that should work.
>
>> (You'd lose the original value, which is about AFS and SMB mounts, which
>> may be a sensible default, but which isn't relevant to most people
>> working in GNU/Linux.)
>
> How am I supposed to know that?  I'm sure I'm not the only person afraid
> to touch it.

It does look pretty daunting as it is, but it's just a regexp to ignore
files and you can put whatever you want in it.  And I don't think that's
unclear from the doc string, so I don't think there's anything to fix here.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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