GNU bug report logs - #31763
26.1; Unable to visit git revision in compact-style vc log buffer

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

From: Carlos Pita <carlosjosepita <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 26.1; Unable to visit git revision in compact-style vc log buffer
Date: Fri, 08 Jun 2018 16:09:16 -0300

I created a test git repo, add a file, make a few changes, commit a few
revisions. Now I open the compact log buffer for the file (C-x v L) and
when I try to visit a revision (f) I get, for instance:

  Checking out /tmp/repo/.~69ad211~...
  vc-find-backend-function: Cannot open load file: No such file or directory, vc-nil

Take into account that:

1. From the normal log buffer (C-x v l) the above works as documented.
2. The compact log buffer is still able to show revision diffs (d).

---

In GNU Emacs 26.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.30)
 of 2018-05-29 built on juergen
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
System Description:	Manjaro Linux

Recent messages:
Checking out /tmp/repo/.~69ad211~...
vc-find-backend-function: Cannot open load file: No such file or directory, vc-nil
Checking out /tmp/repo/.~69ad211~...
vc-find-backend-function: Cannot open load file: No such file or directory, vc-nil
Checking out /tmp/repo/.~69ad211~...
vc-find-backend-function: Cannot open load file: No such file or directory, vc-nil
Checking out /tmp/repo/.~69ad211~...
vc-find-backend-function: Cannot open load file: No such file or directory, vc-nil
Quit
next-line: End of buffer [10 times]

Configured using:
 'configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/lib
 --localstatedir=/var --with-x-toolkit=gtk3 --with-xft --with-modules
 'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong
 -fno-plt' CPPFLAGS=-D_FORTIFY_SOURCE=2
 LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now'

Configured features:
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ACL GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS
GTK3 X11 MODULES THREADS LIBSYSTEMD LCMS2

Important settings:
  value of $LC_MONETARY: en_US.UTF-8
  value of $LC_NUMERIC: en_US.UTF-8
  value of $LC_TIME: en_US.UTF-8
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Messages

Minor modes in effect:
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  shell-dirtrack-mode: t
  winner-mode: t
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  company-mode: t
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  file-name-shadow-mode: t
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  auto-compression-mode: t
  buffer-read-only: t
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  transient-mark-mode: t

Load-path shadows:
None found.

Features:
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Memory information:
((conses 16 462460 24851)
 (symbols 48 34148 1)
 (miscs 40 152 216)
 (strings 32 81423 1657)
 (string-bytes 1 2230165)
 (vectors 16 54878)
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Message #8 received at 31763 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Carlos Pita <carlosjosepita <at> gmail.com>
Cc: 31763 <at> debbugs.gnu.org
Subject: Re: bug#31763: 26.1;
 Unable to visit git revision in compact-style vc log buffer
Date: Sun, 10 Jun 2018 19:52:29 +0300

> From: Carlos Pita <carlosjosepita <at> gmail.com>
> Date: Fri, 08 Jun 2018 16:09:16 -0300
> 
> I created a test git repo, add a file, make a few changes, commit a few
> revisions. Now I open the compact log buffer for the file (C-x v L) and
> when I try to visit a revision (f) I get, for instance:
> 
>   Checking out /tmp/repo/.~69ad211~...
>   vc-find-backend-function: Cannot open load file: No such file or directory, vc-nil

Invoking 'f' from the log shown by "C-x v L" (and also "C-x v b")
makes no sense:  one cannot "visit the version" except in the context
of a specific file or a set of files.  And "C-x v L" is not about a
file, it's about the whole tree.  Without a specific file,
log-view-find-revision cannot show anything sensible, even if we fix
the vc-nil problem.

Btw, it looks like this command never worked from these two varieties
of log buffers.

My suggestion is to bind 'f' in these two kinds of listings to a
different command, which would ask the user what file to show at that
revision.

Message #15 received at 31763 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Carlos Pita <carlosjosepita <at> gmail.com>, 31763 <at> debbugs.gnu.org
Subject: Re: bug#31763: 26.1; Unable to visit git revision in compact-style
 vc log buffer
Date: Sat, 07 May 2022 13:58:57 +0200

Eli Zaretskii <eliz <at> gnu.org> writes:

> Btw, it looks like this command never worked from these two varieties
> of log buffers.
>
> My suggestion is to bind 'f' in these two kinds of listings to a
> different command, which would ask the user what file to show at that
> revision.

This was fixed in a different way in 7aa5056b574, which just signals an
error (which I think is fine, too), so I'm closing this bug report.

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

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