bug#40140: 26.3; Renaming a directory with an external tool

bug#40140: 26.3; Renaming a directory with an external tool

[Nicolas Gimenez]

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Hi!


Right after renaming a directory with an external tool when Emacs is 
visiting a file in that directory, Emacs doesn't change the open file 
buffers directory association.

It would probably be better to open a prompt where one can navigate to a 
new target directory.


Steps to reproduce:

1) Create file and directory 
'/home/nicolas/elixir_learn/mastery/test/support/tmp/test.ex' within 
Spacemacs.

2) Edit file, still from Spacemacs add dummy info. Save file.

3) Save file 
'/home/nicolas/elixir_learn/mastery/test/support/tmp/test.ex from Spacemacs

4) Switch to bash in an external terminal and run: "mv 
/home/nicolas/elixir_learn/mastery/test/support/tmp 
/home/nicolas/elixir_learn/mastery/test/support/tmp2". (Emacs still open 
in another OS's frame.)

5) Get back to Emacs. Attempt to write file from Emacs, minibuffer in 
the bottom shows: "Please answer y or n. Directory 
'/home/nicolas/elixir_learn/mastery/test/support/tmp/' does not exist; 
create? (y or n)"

6) I answer "y".

7) Minibuffer shows: "Wrote 
/home/nicolas/elixir_learn/mastery/test/support/tmp/test.ex"

8) See screenshots attached. Now there are two directories "tmp" and "tmp2":

*[nicolas@pc-31 ~]$* *ls -Rlrt 
/home/nicolas/elixir_learn/mastery/test/support/*
/home/nicolas/elixir_learn/mastery/test/support/:
total 12
-rw-r--r--. 1 nicolas nicolas  237 Mar 19 23:01 quiz_builders.exs
drwxr-xr-x. 2 nicolas nicolas 4096 Mar 19 23:29 tmp2
drwxr-xr-x. 2 nicolas nicolas 4096 Mar 19 23:32 tmp
*
/home/nicolas/elixir_learn/mastery/test/support/tmp2:
*total 4*
*-rw-r--r--. 1 nicolas nicolas 33 Mar 19 23:29 test.ex*
****
/home/nicolas/elixir_learn/mastery/test/support/tmp:
*total 4*
*-rw-r--r--. 1 nicolas nicolas 34 Mar 19 23:32 test.ex


It also happens in vanilla Emacs. Steps to reproduce (from 
https://github.com/syl20bnr/spacemacs/issues/9266):

  * Open an existing file, for example: |C-x C-f| |c:/tmp/a.txt| |RET|
  * Open a shell: |M-x shell RET|
  * Navigate to the root: |cd /|
  * Rename the directory: |rename tmp tmp2| (in non-Windows: |mv tmp tmp2|)
  * Switch back to the window with the open file: |C-x o|
  * Try to save the file: |C-x C-s|
  * A prompt is shown:

    Directory 'c:/tmp/' does not exist; create? (y or n)



Thank you!



Here is the information extracted from M-x report-emacs-bug in Emacs:


In GNU Emacs 26.3 (build 1, x86_64-redhat-linux-gnu, GTK+ Version 3.24.13)
  of 2019-12-10 built on buildhw-07.phx2.fedoraproject.org
Windowing system distributor 'Fedora Project', version 11.0.12006000
Recent messages:
LSP :: Connected to [elixir-ls:8145].
This package is deprecated and will be removed from Melpa. Please, use 
lsp-mode instead 
https://elixirforum.com/t/emacs-elixir-setup-configuration-wiki/
Indenting region...done
Saving file /home/nicolas/elixir_learn/mastery/test/support/tmp/test.ex...
Wrote /home/nicolas/elixir_learn/mastery/test/support/tmp/test.ex
Saving file /home/nicolas/elixir_learn/mastery/test/support/tmp/test.ex...
Directory ‘/home/nicolas/elixir_learn/mastery/test/support/tmp/’ does 
not exist; create? (y or n) y
Wrote /home/nicolas/elixir_learn/mastery/test/support/tmp/test.ex
Auto-evilification could not remap these functions in map ‘edebug-mode-map’:
    - ‘edebug-Go-nonstop-mode’ originally mapped on ‘G’

Configured using:
  'configure --build=x86_64-redhat-linux-gnu
  --host=x86_64-redhat-linux-gnu --program-prefix=
  --disable-dependency-tracking --prefix=/usr --exec-prefix=/usr
  --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc
  --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib64
  --libexecdir=/usr/libexec --localstatedir=/var
  --sharedstatedir=/var/lib --mandir=/usr/share/man
  --infodir=/usr/share/info --with-dbus --with-gif --with-jpeg --with-png
  --with-rsvg --with-tiff --with-xft --with-xpm --with-x-toolkit=gtk3
  --with-gpm=no --with-xwidgets --with-modules
  build_alias=x86_64-redhat-linux-gnu host_alias=x86_64-redhat-linux-gnu
  'CFLAGS=-DMAIL_USE_LOCKF -O2 -g -pipe -Wall -Werror=format-security
  -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions
  -fstack-protector-strong -grecord-gcc-switches
  -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
  -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic
  -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection'
  LDFLAGS=-Wl,-z,relro
  PKG_CONFIG_PATH=:/usr/lib64/pkgconfig:/usr/share/pkgconfig'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND DBUS GSETTINGS GLIB NOTIFY
ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM MODULES THREADS XWIDGETS LCMS2

Important settings:
   value of $LANG: en_US.UTF-8
   value of $XMODIFIERS: @im=ibus
   locale-coding-system: utf-8-unix

Major mode: Messages

Minor modes in effect:
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   helm-mode: t
   helm-flx-mode: t
   helm--remap-mouse-mode: t
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   global-flycheck-mode: t
   show-smartparens-global-mode: t
   pupo-mode: t
   purpose-mode: t
   evil-escape-mode: t
   global-git-gutter+-mode: t
   global-git-commit-mode: t
   async-bytecomp-package-mode: t
   recentf-mode: t
   dap-tooltip-mode: t
   dap-ui-mode: t
   projectile-mode: t
   treemacs-filewatch-mode: t
   treemacs-follow-mode: t
   treemacs-git-mode: deferred
   treemacs-fringe-indicator-mode: t
   dap-mode: t
   yas-global-mode: t
   yas-minor-mode: t
   winner-mode: t
   winum-mode: t
   global-vi-tilde-fringe-mode: t
   vi-tilde-fringe-mode: t
   spaceline-info-mode: t
   spaceline-helm-mode: t
   save-place-mode: t
   savehist-mode: t
   persp-mode: t
   global-hl-todo-mode: t
   eyebrowse-mode: t
   global-anzu-mode: t
   anzu-mode: t
   editorconfig-mode: t
   clean-aindent-mode: t
   which-key-mode: t
   override-global-mode: t
   global-undo-tree-mode: t
   undo-tree-mode: t
   shell-dirtrack-mode: t
   evil-mode: t
   evil-local-mode: t
   spacemacs-leader-override-mode: t
   global-spacemacs-leader-override-mode: t
   global-hl-line-mode: t
   xterm-mouse-mode: t
   global-auto-revert-mode: t
   ido-vertical-mode: t
   global-page-break-lines-mode: t
   tooltip-mode: t
   global-eldoc-mode: t
   electric-indent-mode: t
   mouse-wheel-mode: t
   file-name-shadow-mode: t
   global-font-lock-mode: t
   font-lock-mode: t
   auto-composition-mode: t
   auto-encryption-mode: t
   auto-compression-mode: t
   buffer-read-only: t
   column-number-mode: t
   line-number-mode: t
   transient-mark-mode: t

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/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/org-timer 
hides /usr/share/emacs/26.3/lisp/org/org-timer
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-calc 
hides /usr/share/emacs/26.3/lisp/org/ob-calc
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-exp 
hides /usr/share/emacs/26.3/lisp/org/ob-exp
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob 
hides /usr/share/emacs/26.3/lisp/org/ob
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ox-man 
hides /usr/share/emacs/26.3/lisp/org/ox-man
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-shen 
hides /usr/share/emacs/26.3/lisp/org/ob-shen
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-js 
hides /usr/share/emacs/26.3/lisp/org/ob-js
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/org-element 
hides /usr/share/emacs/26.3/lisp/org/org-element
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ox-publish 
hides /usr/share/emacs/26.3/lisp/org/ox-publish
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-octave 
hides /usr/share/emacs/26.3/lisp/org/ob-octave
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-comint 
hides /usr/share/emacs/26.3/lisp/org/ob-comint
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-J 
hides /usr/share/emacs/26.3/lisp/org/ob-J
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-ruby 
hides /usr/share/emacs/26.3/lisp/org/ob-ruby
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-sql 
hides /usr/share/emacs/26.3/lisp/org/ob-sql
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/org-clock 
hides /usr/share/emacs/26.3/lisp/org/org-clock
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/org-archive 
hides /usr/share/emacs/26.3/lisp/org/org-archive
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ox-md 
hides /usr/share/emacs/26.3/lisp/org/ox-md
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-java 
hides /usr/share/emacs/26.3/lisp/org/ob-java
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-awk 
hides /usr/share/emacs/26.3/lisp/org/ob-awk
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-ocaml 
hides /usr/share/emacs/26.3/lisp/org/ob-ocaml
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-python 
hides /usr/share/emacs/26.3/lisp/org/ob-python
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/org-id 
hides /usr/share/emacs/26.3/lisp/org/org-id
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-plantuml 
hides /usr/share/emacs/26.3/lisp/org/ob-plantuml
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ox-org 
hides /usr/share/emacs/26.3/lisp/org/ox-org
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-fortran 
hides /usr/share/emacs/26.3/lisp/org/ob-fortran
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-ditaa 
hides /usr/share/emacs/26.3/lisp/org/ob-ditaa
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/ob-abc 
hides /usr/share/emacs/26.3/lisp/org/ob-abc
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/org-feed 
hides /usr/share/emacs/26.3/lisp/org/org-feed
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/org-version 
hides /usr/share/emacs/26.3/lisp/org/org-version
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/org-habit 
hides /usr/share/emacs/26.3/lisp/org/org-habit
/home/nicolas/.emacs.d/elpa/26.3/develop/org-plus-contrib-20200302/org-loaddefs 
hides /usr/share/emacs/26.3/lisp/org/org-loaddefs
/home/nicolas/.emacs.d/elpa/26.3/develop/map-2.1/map hides 
/usr/share/emacs/26.3/lisp/emacs-lisp/map
/home/nicolas/.emacs.d/elpa/26.3/develop/let-alist-1.0.6/let-alist hides 
/usr/share/emacs/26.3/lisp/emacs-lisp/let-alist

Features:
(shadow sort mail-extr emacsbug sendmail helm-command helm-elisp
helm-eval edebug helm-info ffap flx helm-descbinds helm-mode helm-files
helm-buffers helm-occur helm-tags helm-locate helm-grep helm-regexp
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ol-irc ol-info ol-gnus nnir gnus-sum gnus-group gnus-undo gnus-start
gnus-cloud nnimap nnmail mail-source utf7 netrc nnoo gnus-spec gnus-int
gnus-range gnus-win gnus nnheader ol-docview doc-view jka-compr
ol-bibtex bibtex ol-bbdb ol-w3m smartparens-org ob-elixir orgit
evil-magit git-rebase magit-bookmark magit-submodule magit-obsolete
magit-popup magit-blame magit-stash magit-reflog magit-bisect magit-push
magit-pull magit-fetch magit-clone magit-remote magit-commit
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smerge-mode magit-core magit-autorevert magit-margin magit-transient
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org-macro org-footnote org-src ob-comint org-pcomplete org-list
org-faces org-entities org-version ob-emacs-lisp ob-core ob-eval
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company-semantic company-eclim company-template company-bbdb company
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treemacs-bookmarks bookmark pp lsp-ui-imenu lsp-ui-peek lsp-ui-sideline
view lsp-yaml lsp-xml lsp-vhdl lsp-vetur lsp-html lsp-verilog
lsp-terraform lsp-solargraph lsp-rust lsp-pyls lsp-pwsh lsp-perl
lsp-metals lsp-json lsp-intelephense lsp-haxe lsp-go lsp-gdscript
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smartparens-text smartparens-elixir smartparens elixir-mode
elixir-format pkg-info url-http url url-proxy url-privacy url-expand
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find-func epl elixir-smie smie editorconfig-core
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avy treemacs-macros treemacs-customization gdb-mi gud bui bui-list
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spinner network-stream puny nsm rmc starttls tls gnutls markdown-mode
json map imenu ewoc em-glob esh-util dash-functional compile bindat
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evil-keybindings evil-integration undo-tree diff evil-maps evil-commands
reveal flyspell ispell evil-jumps evil-command-window evil-types
evil-search evil-ex shell pcomplete comint ansi-color evil-macros
evil-repeat evil-states evil-core evil-common windmove thingatpt rect
evil-digraphs evil-vars ring bind-map quelpa mm-decode mm-bodies
mm-encode mail-parse rfc2231 rfc2047 rfc2045 mm-util ietf-drums
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prog-mode register page menu-bar rfn-eshadow isearch timer select
scroll-bar mouse jit-lock font-lock syntax facemenu font-core
term/tty-colors frame cl-generic cham georgian utf-8-lang misc-lang
vietnamese tibetan thai tai-viet lao korean japanese eucjp-ms cp51932
hebrew greek romanian slovak czech european ethiopic indian cyrillic
chinese composite charscript charprop case-table epa-hook jka-cmpr-hook
help simple abbrev obarray minibuffer cl-preloaded nadvice loaddefs
button faces cus-face macroexp files text-properties overlay sha1 md5
base64 format env code-pages mule custom widget hashtable-print-readable
backquote threads dbusbind inotify lcms2 dynamic-setting
system-font-setting font-render-setting xwidget-internal move-toolbar
gtk x-toolkit x multi-tty make-network-process emacs)

Memory information:
((conses 16 1048179 983283)
  (symbols 48 78491 87)
  (miscs 40 1444 3197)
  (strings 32 242283 133623)
  (string-bytes 1 8188000)
  (vectors 16 114952)
  (vector-slots 8 2216972 534664)
  (floats 8 806 3813)
  (intervals 56 5245 7164)
  (buffers 992 53))



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bug#40140: 26.3; Renaming a directory with an external tool

[Tomas Nordin]

Hello Nicolas

Nicolas Gimenez <n.gimenez66@gmail.com> writes:

> Hi!
>
>
> Right after renaming a directory with an external tool when Emacs is 
> visiting a file in that directory, Emacs doesn't change the open file 
> buffers directory association.
>
> It would probably be better to open a prompt where one can navigate to a 
> new target directory.
>
>
> Steps to reproduce:
>
> 1) Create file and directory 
> '/home/nicolas/elixir_learn/mastery/test/support/tmp/test.ex' within 
> Spacemacs.
>
> 2) Edit file, still from Spacemacs add dummy info. Save file.
>
> 3) Save file 
> '/home/nicolas/elixir_learn/mastery/test/support/tmp/test.ex from Spacemacs
>
> 4) Switch to bash in an external terminal and run: "mv 
> /home/nicolas/elixir_learn/mastery/test/support/tmp 
> /home/nicolas/elixir_learn/mastery/test/support/tmp2". (Emacs still open 
> in another OS's frame.)
>
> 5) Get back to Emacs. Attempt to write file from Emacs, minibuffer in 
> the bottom shows: "Please answer y or n. Directory 
> '/home/nicolas/elixir_learn/mastery/test/support/tmp/' does not exist; 
> create? (y or n)"

If you try this experiment with any other text editor I think you will
see similar effects. I tried with gedit and vim and got the
corresponding effects.

Using Emacs in this case I would do C-x C-w and then navigate to the
existing directory, then one with the new name tmp2. Then I will have to
allow over-writing the copy of test.ex on disc in tmp2.

I think the text editor cannot assume that the buffer holding test.ex is
to be associated with the file in the new directory. The buffer-file
association is broken by the external renaming of the directory.

Best regards
--
Tomas

bug#40140: 26.3; Renaming a directory with an external tool

[Lars Ingebrigtsen]

Tomas Nordin <tomasn@posteo.net> writes:

>> 5) Get back to Emacs. Attempt to write file from Emacs, minibuffer in 
>> the bottom shows: "Please answer y or n. Directory 
>> '/home/nicolas/elixir_learn/mastery/test/support/tmp/' does not exist; 
>> create? (y or n)"
>
> If you try this experiment with any other text editor I think you will
> see similar effects. I tried with gedit and vim and got the
> corresponding effects.

I don't really think there's anything reasonable Emacs can do (by
itself) in these cases -- what should happen here depends on each
individual case (the tree is totally gone; it's moved somewhere else;
etc), so that has to be left to the user, like Tomas says:

> Using Emacs in this case I would do C-x C-w and then navigate to the
> existing directory, then one with the new name tmp2. Then I will have to
> allow over-writing the copy of test.ex on disc in tmp2.

So I'm closing this bug report.

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