From: Ilya Ostapyshyn <ilya.ostapyshyn@gmail.com>
To: Dmitry Gutov <dgutov@yandex.ru>
Cc: emacs-devel@gnu.org
Subject: Re: [PATCH] Fix vc-working-revision return nil when default-directory is not inside repo
Date: Sun, 17 May 2020 17:17:29 +0300 [thread overview]
Message-ID: <m2h7weir2e.fsf@ilya-mbp.lan> (raw)
In-Reply-To: <m2o8qmisdo.fsf@gmail.com> (Ilya Ostapyshyn's message of "Sun, 17 May 2020 16:49:07 +0300")
Ilya Ostapyshyn <ilya.ostapyshyn@gmail.com> writes:
> Dmitry Gutov <dgutov@yandex.ru> writes:
>
> Hi Ilya,
>
> On 17.05.2020 14:16, Ilya Ostapyshyn wrote:
>> "vc-git-mode-line-string" (which is called automatically) failed
>> occasionally with an error message (wrong-type-argument arrayp nil) when
>> the default-directory is outside the repository.
>
> Could you describe a full scenario when this can happen?
Despite the complex scenario I described, the issue is not hard to
reproduce.
1. Open a file in a Git repository
2. (vc-working-revision buffer-file-name)
=> working revision hash
3. (cd "/")
4. (vc-file-clearprops buffer-file-name) ;; clear the cached revision in symbol's props
5. (vc-working-revision buffer-file-name)
=> nil
Note, that (vc-working-revision) attempts to use cached value, and if it
is unavailable calls the VC backend to fetch one.
next prev parent reply other threads:[~2020-05-17 14:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-17 11:16 [PATCH] Fix vc-working-revision return nil when default-directory is not inside repo Ilya Ostapyshyn
2020-05-17 13:01 ` Dmitry Gutov
2020-05-17 13:49 ` Ilya Ostapyshyn
2020-05-17 14:17 ` Ilya Ostapyshyn [this message]
2020-05-18 0:05 ` Dmitry Gutov
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