GNU bug report logs - #8603
23.3.50; vc-dir can easily guess wrong VCS

Previous Next

To add a comment to this bug, you must first unarchive it, by sending
a message to control AT debbugs.gnu.org, with unarchive 8603 in the body.
You can then email your comments to 8603 AT debbugs.gnu.org in the normal way.

Toggle the display of automated, internal messages from the tracker.

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

From: Reuben Thomas <rrt <at> sc3d.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 23.3.50; vc-dir can easily guess wrong VCS
Date: Mon, 02 May 2011 13:13:58 +0100

If I run vc-dir on a directory /foo/bar/baz, where /foo/.bzr and
/foo/bar/.git exist, then Emacs guesses wrongly that /foo/bar/baz is
under Bzr.

It seems that first, the directory is not registered with a backend
(which may be on purpose, since git does not actually register
directories?), but then secondly that /foo is checked before /foo/bar
when deciding which backend to use.

Further, deleting the .bzr directory (which was indeed bogus; it’s
obviously relatively rare to have a tree under one VCS inside a tree
under another, with the exception of foreign modules, possibly?) did not
help: I had to restart Emacs to get it to forget the .bzr directory.


In GNU Emacs 23.3.50.1 (i686-pc-linux-gnu, GTK+ Version 2.24.4)
 of 2011-04-24 on canta
Windowing system distributor `The X.Org Foundation', version 11.0.11001000
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_GB.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Emacs-Lisp

Minor modes in effect:
  recentf-mode: t
  show-paren-mode: t
  savehist-mode: t
  minibuffer-electric-default-mode: t
  iswitchb-mode: t
  icomplete-mode: t
  global-whitespace-mode: t
  global-auto-revert-mode: t
  desktop-save-mode: t
  nxhtml-menu-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
M-: M-" <up> <return> M-: <up> <left> <left> C-e <left> 
<left> / d o c <return> M-: <up> <return> C-x b C-g 
C-x c f C-x v f C-x v c d C-x v d <up> <return> C-x 
k <return> <help-echo> <help-echo> <down-mouse-1> <mouse-1> 
<help-echo> M-x r e p o r t b u - <backspace> <backspace> 
<backspace> - e m a c v s - <backspace> <backspace> 
<backspace> s - b u <return>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
nil [3 times]
Quit
Buffer is read-only: #<buffer vc.el.gz>
vc-deduce-fileset: No fileset is available here
Buffer is read-only: #<buffer vc.el.gz>
Loading add-log...done
Loading make-mode...done
Loading autoconf...done
found match ]] [19 times]

Load-path shadows:
/home/rrt/local/share/emacs/nxhtml/util/rnc-mode hides /usr/share/emacs-snapshot/site-lisp/rnc-mode/rnc-mode
/home/rrt/local/share/emacs/nxhtml/related/php-mode hides /home/rrt/local/share/emacs/site-lisp/php-mode
/home/rrt/.emacs.d/elpa/dictionary-1.8.7/link hides /usr/local/share/emacs/23.3.50/site-lisp/dictionary-el/link
/home/rrt/.emacs.d/elpa/dictionary-1.8.7/connection hides /usr/local/share/emacs/23.3.50/site-lisp/dictionary-el/connection
/home/rrt/.emacs.d/elpa/dictionary-1.8.7/dictionary-init hides /usr/local/share/emacs/23.3.50/site-lisp/dictionary-el/dictionary-init
/home/rrt/.emacs.d/elpa/dictionary-1.8.7/dictionary hides /usr/local/share/emacs/23.3.50/site-lisp/dictionary-el/dictionary
/home/rrt/local/share/emacs/site-lisp/graphviz-dot-mode hides /usr/local/share/emacs/23.3.50/site-lisp/emacs-goodies-el/graphviz-dot-mode
/home/rrt/local/share/emacs/site-lisp/dict hides /usr/local/share/emacs/23.3.50/site-lisp/emacs-goodies-el/dict
/usr/local/share/emacs/23.3.50/site-lisp/css-mode/css-mode hides /usr/local/share/emacs/23.3.50/lisp/textmodes/css-mode
/usr/share/emacs-snapshot/site-lisp/ruby1.8-elisp/ruby-mode hides /usr/local/share/emacs/23.3.50/lisp/progmodes/ruby-mode
/usr/local/share/emacs/23.3.50/site-lisp/css-mode/css-mode hides /usr/share/emacs/site-lisp/css-mode/css-mode
/usr/local/share/emacs/23.3.50/site-lisp/auctex/tex-info hides /usr/share/emacs/site-lisp/auctex/tex-info
/usr/local/share/emacs/23.3.50/site-lisp/auctex/context-nl hides /usr/share/emacs/site-lisp/auctex/context-nl
/usr/local/share/emacs/23.3.50/site-lisp/auctex/context-en hides /usr/share/emacs/site-lisp/auctex/context-en
/usr/local/share/emacs/23.3.50/site-lisp/auctex/latex hides /usr/share/emacs/site-lisp/auctex/latex
/usr/local/share/emacs/23.3.50/site-lisp/auctex/tex-mik hides /usr/share/emacs/site-lisp/auctex/tex-mik
/usr/local/share/emacs/23.3.50/site-lisp/auctex/tex-buf hides /usr/share/emacs/site-lisp/auctex/tex-buf
/usr/local/share/emacs/23.3.50/site-lisp/auctex/tex-jp hides /usr/share/emacs/site-lisp/auctex/tex-jp
/usr/local/share/emacs/23.3.50/site-lisp/auctex/tex-bar hides /usr/share/emacs/site-lisp/auctex/tex-bar
/usr/local/share/emacs/23.3.50/site-lisp/auctex/tex hides /usr/share/emacs/site-lisp/auctex/tex
/usr/local/share/emacs/23.3.50/site-lisp/auctex/multi-prompt hides /usr/share/emacs/site-lisp/auctex/multi-prompt
/usr/local/share/emacs/23.3.50/site-lisp/auctex/tex-fptex hides /usr/share/emacs/site-lisp/auctex/tex-fptex
/usr/local/share/emacs/23.3.50/site-lisp/auctex/tex-font hides /usr/share/emacs/site-lisp/auctex/tex-font
/usr/local/share/emacs/23.3.50/site-lisp/auctex/tex-fold hides /usr/share/emacs/site-lisp/auctex/tex-fold
/usr/local/share/emacs/23.3.50/site-lisp/auctex/texmathp hides /usr/share/emacs/site-lisp/auctex/texmathp
/usr/local/share/emacs/23.3.50/site-lisp/auctex/context hides /usr/share/emacs/site-lisp/auctex/context
/usr/local/share/emacs/23.3.50/site-lisp/auctex/font-latex hides /usr/share/emacs/site-lisp/auctex/font-latex
/usr/local/share/emacs/23.3.50/site-lisp/auctex/bib-cite hides /usr/share/emacs/site-lisp/auctex/bib-cite
/usr/local/share/emacs/23.3.50/site-lisp/auctex/toolbar-x hides /usr/share/emacs/site-lisp/auctex/toolbar-x
/usr/local/share/emacs/23.3.50/site-lisp/auctex/tex-style hides /usr/share/emacs/site-lisp/auctex/tex-style

Features:
(shadow sort mail-extr message sendmail ecomplete rfc822 mml mml-sec
password-cache mm-decode mm-bodies mm-encode mailcap mail-parse rfc2231
rfc2047 rfc2045 qp ietf-drums mailabbrev nnheader gnus-util netrc
time-date mm-util mail-prsvr gmm-utils mailheader canlock hashcash
mail-utils emacsbug autoconf autoconf-mode make-mode add-log vc-sccs
vc-svn vc-cvs vc-rcs vc-dir ewoc vc vc-dispatcher vc-bzr sha1 hex-util
sh-script executable vc-git tex-info texinfo tex face-remap filladapt
flyspell jka-compr completing-help recentf tree-widget wid-edit uniquify
paren savehist minibuf-eldef iswitchb icomplete whitespace autorevert
time as-external wrap-to-fill cus-start cus-load desktop server
nxhtml-autostart nxhtml-autoload majmodpri rnc-mode nxhtml-menu
web-autoload nxhtml-base php-mode etags cc-langs cc-mode cc-fonts
cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs speedbar
sb-image ezimage dframe lua-mode regexp-opt comint ring ropemacs pymacs
ffap ispell smart-quotes auto-dictionary-autoloads c-eldoc-autoloads
dictionary-autoloads diff-git-autoloads dired-isearch-autoloads
full-ack-autoloads guess-style-autoloads kill-ring-search-autoloads
magit-autoloads mv-shell-autoloads tumble-autoloads
http-post-simple-autoloads package reporter advice advice-preload
yasnippet help-fns derived edmacro kmacro easymenu assoc cl cl-19
muse-autoloads emacs-goodies-el emacs-goodies-custom
emacs-goodies-loaddefs easy-mmode preview-latex tex-site auto-loads
tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd
font-setting tool-bar dnd fontset image fringe lisp-mode register page
menu-bar rfn-eshadow timer select scroll-bar mldrag mouse jit-lock
font-lock syntax facemenu font-core frame cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew
greek romanian slovak czech european ethiopic indian cyrillic chinese
case-table epa-hook jka-cmpr-hook help simple abbrev loaddefs button
minibuffer faces cus-face files text-properties overlay md5 base64
format env code-pages mule custom widget hashtable-print-readable
backquote make-network-process dbusbind system-font-setting
font-render-setting gtk x-toolkit x multi-tty emacs)

-- 
http://rrt.sc3d.org/

Message #8 received at 8603 <at> debbugs.gnu.org (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: Reuben Thomas <rrt <at> sc3d.org>
Cc: 8603 <at> debbugs.gnu.org
Subject: Re: bug#8603: 23.3.50; vc-dir can easily guess wrong VCS
Date: Mon, 02 May 2011 16:17:19 -0400

Reuben Thomas wrote:

> If I run vc-dir on a directory /foo/bar/baz, where /foo/.bzr and
> /foo/bar/.git exist, then Emacs guesses wrongly that /foo/bar/baz is
> under Bzr.

This is the documented way it works, for the time being at least.
This is basically a duplicate of

http://debbugs.gnu.org/cgi/bugreport.cgi?bug=8179


> Further, deleting the .bzr directory (which was indeed bogus; it's
> obviously relatively rare to have a tree under one VCS inside a tree
> under another, with the exception of foreign modules, possibly?) did not
> help: I had to restart Emacs to get it to forget the .bzr directory.

Message #11 received at 8603 <at> debbugs.gnu.org (full text, mbox):

From: Reuben Thomas <rrt <at> sc3d.org>
To: Glenn Morris <rgm <at> gnu.org>
Cc: 8603 <at> debbugs.gnu.org
Subject: Re: bug#8603: 23.3.50; vc-dir can easily guess wrong VCS
Date: Mon, 2 May 2011 22:18:07 +0100

On 2 May 2011 21:17, Glenn Morris <rgm <at> gnu.org> wrote:
>
> This is the documented way it works, for the time being at least.
> This is basically a duplicate of
>
> http://debbugs.gnu.org/cgi/bugreport.cgi?bug=8179

Thanks for the pointer. To describe the current behavior as
"documented" is stretching things, though (at least, I had to trawl
through the code to get a handle on what was going on, and I can see
no documentation cited in the thread above or in the docstrings that
describes the current behavior).

In any case, documented or not, it's a bug, and it's a bug in the
stable version of Emacs, not just the development version.

-- 
http://rrt.sc3d.org

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.