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bug#42836: closed (27.1; default-directory is set to "/" after startup)

From: GNU bug Tracking System
Subject: bug#42836: closed (27.1; default-directory is set to "/" after startup)
Date: Thu, 13 Aug 2020 22:46:02 +0000

Your message dated Thu, 13 Aug 2020 15:44:59 -0700
with message-id <42ef5de3-6576-bf51-d2c0-3ea490a94a46@cs.ucla.edu>
and subject line Re: bug#42836: 27.1; default-directory is set to "/" after 
has caused the debbugs.gnu.org bug report #42836,
regarding 27.1; default-directory is set to "/" after startup
to be marked as done.

(If you believe you have received this mail in error, please contact

42836: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=42836
GNU Bug Tracking System
Contact help-debbugs@gnu.org with problems
--- Begin Message --- Subject: 27.1; default-directory is set to "/" after startup Date: Wed, 12 Aug 2020 16:53:56 -0400
Hi folks,

When I start Emacs, the value of default-directory in the *scratch* and
*Messages* buffers is "/". In previous versions of Emacs, it was "~/".

I am on macOS, and I installed Emacs 27.1 as packaged by
https://emacsformacosx.com. There is information about how this is built
and packaged here: https://emacsformacosx.com/about.

Basically, it provides a .app bundle as per typical on macOS. This lets
you open Emacs by clicking on the application icon or running "open -a
Emacs" from the terminal. You can also run it directly by invoking the
full path to the executable
(e.g. /Applications/Emacs.app/Contents/MacOS/Emacs) from the terminal.

When I open Emacs 27.1 by either of the first two methods, the value of
default-directory in the *scratch* and *Messages* buffers is "/". This
is true even though the process working directory is my home directory,
which I verified by running "lsof -a -d cwd -p $(pgrep -i emacs)" after
starting Emacs.

I reinstalled a copy of Emacs 26.3 and verified default-directory used
to be "~/" in these buffers after startup.

When I open Emacs 27.1 by invoking the executable directly (i.e. the
last method above), the default-directory in those buffers is "~/".

I have performed all the above steps using the "-Q" argument to make
sure my own configuration is not confounding anything.

I think you should be able to reproduce by the following steps:

1. Download Emacs from https://emacsformacosx.com and install the
application. (I think
https://emacsformacosx.com/emacs-builds/Emacs-27.1-universal.dmg is the
right URL.)
2. In a terminal, run "open -a Emacs --args -Q" to start Emacs.
3. Once Emacs starts, switch to the *scratch* buffer and evaluate
"default-directory" or "(pwd)" and observe the result.

I tried to do a little digging to determine how and when this variable
is first set to "/", but I couldn't figure it out. It seems that the
default directory is already "/" by the time early-init.el runs. I
determined this by putting "(message default-directory)" in my
early-init.el file and checking the messages buffer after startup.

Please let me know if there's any more information I can provide.


In GNU Emacs 27.1 (build 1, x86_64-apple-darwin18.7.0, NS appkit-1671.60 
Version 10.14.6 (Build 18G95))
of 2020-08-12 built on builder10-14.porkrind.org
Windowing system distributor 'Apple', version 10.3.2004
System Description:  macOS

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
Mark set
Mark deactivated
Making completion list...

Configured using:
'configure --with-ns '--enable-locallisppath=/Library/Application
Support/Emacs/site-lisp' --with-modules'

Configured features:

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

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Load-path shadows:
None found.

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Memory information:
((conses 16 44955 6142)
(symbols 48 5927 1)
(strings 32 15262 1819)
(string-bytes 1 504806)
(vectors 16 10186)
(vector-slots 8 126975 12482)
(floats 8 19 42)
(intervals 56 201 0)
(buffers 1000 12))

--- End Message ---
--- Begin Message --- Subject: Re: bug#42836: 27.1; default-directory is set to "/" after startup Date: Thu, 13 Aug 2020 15:44:59 -0700 User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 Thanks for checking. I installed the patch on the emacs-27 branch and am closing the bug report.

--- End Message ---

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