[debbugs-tracker] bug#18232: closed (24.3.92; Filename completion changes the current working directory)

[GNU bug Tracking System]

Your message dated Sun, 10 Aug 2014 14:08:15 -0700
with message-id <address@hidden>
and subject line Re: bug#18232: 24.3.92; Filename completion changes the 
current working directory
has caused the debbugs.gnu.org bug report #18232,
regarding 24.3.92; Filename completion changes the current working directory
to be marked as done.

(If you believe you have received this mail in error, please contact
address@hidden)


-- 
18232: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=18232
GNU Bug Tracking System
Contact address@hidden with problems
> --- Begin Message ---
>
>
>
> Subject: 
>
> 24.3.92; Filename completion changes the current working directory
>
>
>
>
> Date: 
>
> Sat, 09 Aug 2014 21:56:01 +0200 (CEST)
>
>
>
>
> C-x C-f (find-file) with filename completion changes the current
> working directory (cwd) of emacs.
>
> This is annoying for the following reason:
>
> If you temporarily mount a filesystem and then visit a file in that
> filesystem, you cannot unmount the filesystem because it is now the
> cwd of a running process.
>
> The obvious workaround is to first visit a file not in this
> filesystem, but that is annoying and should be unnecessary.
>
> I have narrowed the cause down to filename completion:
>
> Starting with emacs -Q:
>
>  - Find the PID of the running emacs process.
>  - In a root shell, run “lsof -p PID | grep cwd”.
>  - Evaluate (read-file-name-default "Filename: ") and don't hit RETURN
>  - Navigate to some other directory, and cause filename completion to
>    happen. For example, type “/tmp/” and follow up with TAB.
>  - Run the lsof command again, and note that the current working
>    directory has changed.
>
>
> In GNU Emacs 24.3.92.2 (x86_64-apple-darwin13.3.0, NS apple-appkit-1265.21)
>  of 2014-08-08 on airy
> Windowing system distributor `Apple', version 10.3.1265
> Configured using:
>  `configure --with-ns'
>
> Important settings:
>   value of $LC_CTYPE: en_US.UTF-8
>   value of $LANG: C
>   locale-coding-system: utf-8-unix
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#18232: 24.3.92; Filename completion changes the current working directory
>
>
>
>
> Date: 
>
> Sun, 10 Aug 2014 14:08:15 -0700
>
>
>
>
> User-agent: 
>
> Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.0
>
>
>
>
> Jan Djärv wrote:
> > This bug needs to be fixed in the GNULib code, by really use restore_cwd as it 
> > was intended
>
> Just to clarify, the bug is Emacs's little substitute for Gnulib, not in 
> Gnulib itself.  Perhaps at some point Emacs should just use Gnulib here, 
> but for now it's safer to migrate a bit more of Gnulib into Emacs to 
> avoid this regression.  I reproduced the problem on Fedora 20 by 
> building an Emacs that was crippled to not use readlinkat etc., and 
> installed a patch that worked for me as emacs-24 bzr 117437 (simplified 
> in 117438).
>
>
> --- End Message ---