bug#31048: 27.0.50; With -daemon, "emacsclient -c" on a modified file fails to display frame

bug#31048: 27.0.50; With -daemon, "emacsclient -c" on a modified file fails to display frame

[Bruce Stephens]

On GNU/Linux (with gtk+), after "emacs -Q -daemon", if I do "emacsclient
-c /tmp/foo" (for some existing /tmp/foo) then exit that frame (so the
server still has /tmp/foo in a buffer but has no visible frames), then
"touch /tmp/foo" and try to repeat "emacsclient -c /tmp/foo" the
emacsclient hangs and no frame is displayed.

I would expect a frame to appear with "Revert buffer from file
/tmp/foo?".

The commit that caused the change seems to be the following one, and
reverting that fixes the hang (and returns the behaviour I was
expecting):

commit 49fc040077b33bd1e78ee425575e76329b772a41 (tag: bad, refs/bisect/bad)
Author: Aaron Jensen <aaronjensen@gmail.com>
Date:   Fri Feb 16 17:43:04 2018 +0200

    Don't flash previous buffer when connecting with emacsclient
    
    * lisp/server.el (server-execute): Accept lambda for creating
    frame rather than frame.  Ensure newly created tty frame
    initially shows the correct buffer.
    (server-process-filter): Pass a lambda to server-execute to create
    a frame.  (Bug#24218)

In GNU Emacs 27.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.29)
 of 2018-04-03, modified by Debian built on tinier
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
System Description: Debian GNU/Linux buster/sid

Recent messages:
Loading /local/brs/.emacs-snapshot...done
Starting Emacs daemon.
frame
frame is x
When done with this frame, type C-x 5 0
frame
frame is x
Quit [2 times]
Composing main Info directory...done
Making completion list...

Configured using:
 'configure --build x86_64-linux-gnu --host x86_64-linux-gnu
 --prefix=/usr --sharedstatedir=/var/lib --libexecdir=/usr/lib
 --localstatedir=/var --infodir=/usr/share/info/emacs-snapshot
 --mandir=/usr/share/man --with-pop=yes
 --enable-locallisppath=/etc/emacs-snapshot:/etc/emacs:/usr/local/share/emacs/27.0.50/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/27.0.50/site-lisp:/usr/share/emacs/site-lisp
 --with-crt-dir=/usr/lib/x86_64-linux-gnu/ --with-wide-int --with-x=yes
 --with-x-toolkit=gtk3 --with-imagemagick=yes 'CFLAGS=-DDEBIAN
 -DSITELOAD_PURESIZE_EXTRA=5000 -g -O2' 'CPPFLAGS=-Wdate-time
 -D_FORTIFY_SOURCE=2' 'LDFLAGS=-g -Wl,--as-needed -znocombreloc''

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GSETTINGS NOTIFY
LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 THREADS LCMS2

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

Major mode: Fundamental

Minor modes in effect:
  show-paren-mode: t
  async-bytecomp-package-mode: t
  gud-tooltip-mode: t
  diff-auto-refine-mode: t
  shell-dirtrack-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  menu-bar-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
  line-number-mode: t
  transient-mark-mode: t

Load-path shadows:
/local/brs/elisp/prop hides /local/brs/elisp/graph/prop
/local/brs/elisp/graph/pqueue hides /local/brs/elisp/graph/graph/pqueue
/local/brs/elisp/graph/graph hides /local/brs/elisp/graph/graph/graph
/local/brs/elisp/anything-config/anything hides /local/brs/elisp/anything-config/doc/auto/anything
/local/brs/elisp/jdee/jde/config/build hides /local/brs/elisp/jdee/jde/build/config/build
/local/brs/elisp/jdee/jde/lisp/jde-bug hides /local/brs/elisp/jdee/jde/build/lisp/jde-bug
/local/brs/elisp/jdee/jde/lisp/jde-project-file hides /local/brs/elisp/jdee/jde/build/lisp/jde-project-file
/local/brs/elisp/jdee/jde/lisp/efc hides /local/brs/elisp/jdee/jde/build/lisp/efc
/local/brs/elisp/jdee/jde/lisp/jde-setnu hides /local/brs/elisp/jdee/jde/build/lisp/jde-setnu
/local/brs/elisp/jdee/jde/lisp/jde-junit hides /local/brs/elisp/jdee/jde/build/lisp/jde-junit
/local/brs/elisp/jdee/jde/lisp/jde-gen hides /local/brs/elisp/jdee/jde/build/lisp/jde-gen
/local/brs/elisp/jdee/jde/lisp/jde-xref hides /local/brs/elisp/jdee/jde/build/lisp/jde-xref
/local/brs/elisp/jdee/jde/lisp/jde-javadoc hides /local/brs/elisp/jdee/jde/build/lisp/jde-javadoc
/local/brs/elisp/jdee/jde/lisp/jde-xemacs hides /local/brs/elisp/jdee/jde/build/lisp/jde-xemacs
/local/brs/elisp/jdee/jde/lisp/jde-widgets hides /local/brs/elisp/jdee/jde/build/lisp/jde-widgets
/local/brs/elisp/jdee/jde/lisp/jde-db hides /local/brs/elisp/jdee/jde/build/lisp/jde-db
/local/brs/elisp/jdee/jde/lisp/jde-class hides /local/brs/elisp/jdee/jde/build/lisp/jde-class
/local/brs/elisp/jdee/jde/lisp/jde-open-source hides /local/brs/elisp/jdee/jde/build/lisp/jde-open-source
/local/brs/elisp/jdee/jde/lisp/jde-plugins hides /local/brs/elisp/jdee/jde/build/lisp/jde-plugins
/local/brs/elisp/jdee/jde/lisp/jde-sregex hides /local/brs/elisp/jdee/jde/build/lisp/jde-sregex
/local/brs/elisp/jdee/jde/lisp/jde-javadoc-gen hides /local/brs/elisp/jdee/jde/build/lisp/jde-javadoc-gen
/local/brs/elisp/jdee/jde/lisp/jde-compat hides /local/brs/elisp/jdee/jde/build/lisp/jde-compat
/local/brs/elisp/jdee/jde/lisp/jde-run hides /local/brs/elisp/jdee/jde/build/lisp/jde-run
/local/brs/elisp/jdee/jde/lisp/jde-parse hides /local/brs/elisp/jdee/jde/build/lisp/jde-parse
/local/brs/elisp/jdee/jde/lisp/jde-package hides /local/brs/elisp/jdee/jde/build/lisp/jde-package
/local/brs/elisp/jdee/jde/lisp/regress hides /local/brs/elisp/jdee/jde/build/lisp/regress
/local/brs/elisp/jdee/jde/lisp/jde-java-font-lock hides /local/brs/elisp/jdee/jde/build/lisp/jde-java-font-lock
/local/brs/elisp/jdee/jde/lisp/jde-complete hides /local/brs/elisp/jdee/jde/build/lisp/jde-complete
/local/brs/elisp/jdee/jde/lisp/jde-imenu hides /local/brs/elisp/jdee/jde/build/lisp/jde-imenu
/local/brs/elisp/jdee/jde/lisp/beanshell hides /local/brs/elisp/jdee/jde/build/lisp/beanshell
/local/brs/elisp/jdee/jde/lisp/jcomplete hides /local/brs/elisp/jdee/jde/build/lisp/jcomplete
/local/brs/elisp/jdee/jde/lisp/jde-java-grammar hides /local/brs/elisp/jdee/jde/build/lisp/jde-java-grammar
/local/brs/elisp/jdee/jde/lisp/jde-dbo hides /local/brs/elisp/jdee/jde/build/lisp/jde-dbo
/local/brs/elisp/jdee/jde/lisp/setnu hides /local/brs/elisp/jdee/jde/build/lisp/setnu
/local/brs/elisp/jdee/jde/lisp/jde-juci hides /local/brs/elisp/jdee/jde/build/lisp/jde-juci
/local/brs/elisp/jdee/jde/lisp/jde-jdb hides /local/brs/elisp/jdee/jde/build/lisp/jde-jdb
/local/brs/elisp/jdee/jde/lisp/jde-checkstyle hides /local/brs/elisp/jdee/jde/build/lisp/jde-checkstyle
/local/brs/elisp/jdee/jde/lisp/jde-annotations hides /local/brs/elisp/jdee/jde/build/lisp/jde-annotations
/local/brs/elisp/jdee/jde/lisp/efc-xemacs hides /local/brs/elisp/jdee/jde/build/lisp/efc-xemacs
/local/brs/elisp/jdee/jde/lisp/jde-compile hides /local/brs/elisp/jdee/jde/build/lisp/jde-compile
/local/brs/elisp/jdee/jde/lisp/jde hides /local/brs/elisp/jdee/jde/build/lisp/jde
/local/brs/elisp/jdee/jde/lisp/jde-stat hides /local/brs/elisp/jdee/jde/build/lisp/jde-stat
/local/brs/elisp/jdee/jde/lisp/jde-which-method hides /local/brs/elisp/jdee/jde/build/lisp/jde-which-method
/local/brs/elisp/jdee/jde/lisp/which hides /local/brs/elisp/jdee/jde/build/lisp/which
/local/brs/elisp/jdee/jde/lisp/jde-tree-widget hides /local/brs/elisp/jdee/jde/build/lisp/jde-tree-widget
/local/brs/elisp/jdee/jde/lisp/jde-util hides /local/brs/elisp/jdee/jde/build/lisp/jde-util
/local/brs/elisp/jdee/jde/lisp/jde-custom hides /local/brs/elisp/jdee/jde/build/lisp/jde-custom
/local/brs/elisp/jdee/jde/lisp/jde-ejb hides /local/brs/elisp/jdee/jde/build/lisp/jde-ejb
/local/brs/elisp/jdee/jde/lisp/jde-dbs hides /local/brs/elisp/jdee/jde/build/lisp/jde-dbs
/local/brs/elisp/jdee/jde/lisp/jde-wiz hides /local/brs/elisp/jdee/jde/build/lisp/jde-wiz
/local/brs/elisp/jdee/jde/lisp/jde-project hides /local/brs/elisp/jdee/jde/build/lisp/jde-project
/local/brs/elisp/jdee/jde/lisp/jde-make hides /local/brs/elisp/jdee/jde/build/lisp/jde-make
/local/brs/elisp/jdee/jde/lisp/jde-ant hides /local/brs/elisp/jdee/jde/build/lisp/jde-ant
/local/brs/elisp/jdee/jde/lisp/jde-import hides /local/brs/elisp/jdee/jde/build/lisp/jde-import
/local/brs/elisp/jdee/jde/lisp/jde-parse-class hides /local/brs/elisp/jdee/jde/build/lisp/jde-parse-class
/local/brs/elisp/jdee/jde/lisp/jde-help hides /local/brs/elisp/jdee/jde/build/lisp/jde-help
/local/brs/elisp/undo-tree/undo-tree hides /local/brs/.emacs.d/elpa/undo-tree-20170706.246/undo-tree
/local/brs/elisp/yasnippet/yasnippet hides /local/brs/.emacs.d/elpa/yasnippet-20180319.607/yasnippet
/usr/share/emacs/27.0.50/site-lisp/debian-startup hides /usr/share/emacs/site-lisp/debian-startup
/usr/share/emacs-snapshot/site-lisp/cmake-data/cmake-mode hides /usr/share/emacs/site-lisp/cmake-mode
/local/brs/.emacs.d/elpa/ninja-mode-20141203.2159/ninja-mode hides /usr/share/emacs/site-lisp/ninja-mode
/usr/share/emacs/27.0.50/site-lisp/bbdb/bbdb-pilot-jwz hides /usr/share/emacs/site-lisp/bbdb/bbdb-pilot-jwz
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-customize hides /usr/share/emacs/site-lisp/haskell-mode/haskell-customize
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-mode-pkg hides /usr/share/emacs/site-lisp/haskell-mode/haskell-mode-pkg
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-presentation-mode hides /usr/share/emacs/site-lisp/haskell-mode/haskell-presentation-mode
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-indent hides /usr/share/emacs/site-lisp/haskell-mode/haskell-indent
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-sort-imports hides /usr/share/emacs/site-lisp/haskell-mode/haskell-sort-imports
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-unicode-input-method hides /usr/share/emacs/site-lisp/haskell-mode/haskell-unicode-input-method
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-session hides /usr/share/emacs/site-lisp/haskell-mode/haskell-session
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-commands hides /usr/share/emacs/site-lisp/haskell-mode/haskell-commands
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-load hides /usr/share/emacs/site-lisp/haskell-mode/haskell-load
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-modules hides /usr/share/emacs/site-lisp/haskell-mode/haskell-modules
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-lexeme hides /usr/share/emacs/site-lisp/haskell-mode/haskell-lexeme
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-c2hs hides /usr/share/emacs/site-lisp/haskell-mode/haskell-c2hs
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell hides /usr/share/emacs/site-lisp/haskell-mode/haskell
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-align-imports hides /usr/share/emacs/site-lisp/haskell-mode/haskell-align-imports
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-indentation hides /usr/share/emacs/site-lisp/haskell-mode/haskell-indentation
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-utils hides /usr/share/emacs/site-lisp/haskell-mode/haskell-utils
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-mode hides /usr/share/emacs/site-lisp/haskell-mode/haskell-mode
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-menu hides /usr/share/emacs/site-lisp/haskell-mode/haskell-menu
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-string hides /usr/share/emacs/site-lisp/haskell-mode/haskell-string
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-mode-autoloads hides /usr/share/emacs/site-lisp/haskell-mode/haskell-mode-autoloads
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-hoogle hides /usr/share/emacs/site-lisp/haskell-mode/haskell-hoogle
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-debug hides /usr/share/emacs/site-lisp/haskell-mode/haskell-debug
/usr/share/emacs-snapshot/site-lisp/haskell-mode/ghc-core hides /usr/share/emacs/site-lisp/haskell-mode/ghc-core
/usr/share/emacs-snapshot/site-lisp/haskell-mode/inf-haskell hides /usr/share/emacs/site-lisp/haskell-mode/inf-haskell
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-repl hides /usr/share/emacs/site-lisp/haskell-mode/haskell-repl
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-collapse hides /usr/share/emacs/site-lisp/haskell-mode/haskell-collapse
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-complete-module hides /usr/share/emacs/site-lisp/haskell-mode/haskell-complete-module
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-font-lock hides /usr/share/emacs/site-lisp/haskell-mode/haskell-font-lock
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-cabal hides /usr/share/emacs/site-lisp/haskell-mode/haskell-cabal
/usr/share/emacs-snapshot/site-lisp/haskell-mode/highlight-uses-mode hides /usr/share/emacs/site-lisp/haskell-mode/highlight-uses-mode
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-doc hides /usr/share/emacs/site-lisp/haskell-mode/haskell-doc
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-compat hides /usr/share/emacs/site-lisp/haskell-mode/haskell-compat
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-completions hides /usr/share/emacs/site-lisp/haskell-mode/haskell-completions
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-ghc-support hides /usr/share/emacs/site-lisp/haskell-mode/haskell-ghc-support
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-process hides /usr/share/emacs/site-lisp/haskell-mode/haskell-process
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-move-nested hides /usr/share/emacs/site-lisp/haskell-mode/haskell-move-nested
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-navigate-imports hides /usr/share/emacs/site-lisp/haskell-mode/haskell-navigate-imports
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-decl-scan hides /usr/share/emacs/site-lisp/haskell-mode/haskell-decl-scan
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-interactive-mode hides /usr/share/emacs/site-lisp/haskell-mode/haskell-interactive-mode
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-compile hides /usr/share/emacs/site-lisp/haskell-mode/haskell-compile
/usr/share/emacs-snapshot/site-lisp/haskell-mode/haskell-sandbox hides /usr/share/emacs/site-lisp/haskell-mode/haskell-sandbox
/usr/share/emacs-snapshot/site-lisp/haskell-mode/w3m-haddock hides /usr/share/emacs/site-lisp/haskell-mode/w3m-haddock
/usr/share/emacs-snapshot/site-lisp/haskell-mode/ghci-script-mode hides /usr/share/emacs/site-lisp/haskell-mode/ghci-script-mode
/usr/share/emacs/27.0.50/site-lisp/bbdb/bbdb hides /usr/share/emacs/site-lisp/bbdb/lisp/bbdb
/usr/share/emacs/27.0.50/site-lisp/bbdb/bbdb-gnus hides /usr/share/emacs/site-lisp/bbdb/lisp/bbdb-gnus
/usr/share/emacs/27.0.50/site-lisp/bbdb/bbdb-vm hides /usr/share/emacs/site-lisp/bbdb/lisp/bbdb-vm
/usr/share/emacs/27.0.50/site-lisp/bbdb/bbdb-415-510 hides /usr/share/emacs/site-lisp/bbdb/utils/bbdb-415-510
/usr/share/emacs/27.0.50/site-lisp/bbdb/bbdb-to-netscape hides /usr/share/emacs/site-lisp/bbdb/utils/bbdb-to-netscape
/usr/share/emacs/27.0.50/site-lisp/bbdb/bbdb-213-310 hides /usr/share/emacs/site-lisp/bbdb/utils/bbdb-213-310
/local/brs/elisp/multiple-cursors/features/support/env hides /usr/share/emacs/27.0.50/lisp/env
/usr/share/emacs/site-lisp/dictionaries-common/flyspell hides /usr/share/emacs/27.0.50/lisp/textmodes/flyspell
/usr/share/emacs/site-lisp/rst hides /usr/share/emacs/27.0.50/lisp/textmodes/rst
/usr/share/emacs/site-lisp/dictionaries-common/ispell hides /usr/share/emacs/27.0.50/lisp/textmodes/ispell
/local/brs/elisp/multiple-cursors/util/ert hides /usr/share/emacs/27.0.50/lisp/emacs-lisp/ert

Features:
(shadow sort mail-extr jka-compr emacsbug message rfc822 mml mml-sec epa
gnus-util rmail rmail-loaddefs mm-decode mm-bodies mm-encode mail-parse
rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045
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url-vars seq byte-opt gv bytecomp byte-compile cconv epg epg-config
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Memory information:
((conses 16 500711 18615)
 (symbols 48 36905 1)
 (miscs 40 136 364)
 (strings 32 96210 16847)
 (string-bytes 1 2777162)
 (vectors 16 57274)
 (vector-slots 8 964791 32384)
 (floats 8 374 102)
 (intervals 56 5018 0)
 (buffers 992 16))

bug#31048: 27.0.50; With -daemon, "emacsclient -c" on a modified file fails to display frame

[Eli Zaretskii]

> From: Bruce Stephens <bruce.stephens@isode.com>
> Date: Tue, 03 Apr 2018 17:10:25 +0100
> 
> On GNU/Linux (with gtk+), after "emacs -Q -daemon", if I do "emacsclient
> -c /tmp/foo" (for some existing /tmp/foo) then exit that frame (so the
> server still has /tmp/foo in a buffer but has no visible frames), then
> "touch /tmp/foo" and try to repeat "emacsclient -c /tmp/foo" the
> emacsclient hangs and no frame is displayed.
> 
> I would expect a frame to appear with "Revert buffer from file
> /tmp/foo?".
> 
> The commit that caused the change seems to be the following one, and
> reverting that fixes the hang (and returns the behaviour I was
> expecting):
> 
> commit 49fc040077b33bd1e78ee425575e76329b772a41 (tag: bad, refs/bisect/bad)
> Author: Aaron Jensen <aaronjensen@gmail.com>
> Date:   Fri Feb 16 17:43:04 2018 +0200
> 
>     Don't flash previous buffer when connecting with emacsclient

Thanks, I've now reverted that commit.  Please see that your problem
is solved.

bug#31048: 27.0.50; With -daemon, "emacsclient -c" on a modified file fails to display frame

[Bruce Stephens]

Eli Zaretskii <eliz@gnu.org> writes:

[...]

>> commit 49fc040077b33bd1e78ee425575e76329b772a41 (tag: bad, refs/bisect/bad)
>> Author: Aaron Jensen <aaronjensen@gmail.com>
>> Date:   Fri Feb 16 17:43:04 2018 +0200
>> 
>>     Don't flash previous buffer when connecting with emacsclient
>
> Thanks, I've now reverted that commit.  Please see that your problem
> is solved.

Yes, I can confirm that my problem is fixed now.

bug#31048: 27.0.50; With -daemon, "emacsclient -c" on a modified file fails to display frame

[Eli Zaretskii]

> From: Bruce Stephens <bruce.stephens@isode.com>
> Cc: 31048@debbugs.gnu.org
> Date: Fri, 08 Nov 2019 11:54:22 +0000
> 
> >>     Don't flash previous buffer when connecting with emacsclient
> >
> > Thanks, I've now reverted that commit.  Please see that your problem
> > is solved.
> 
> Yes, I can confirm that my problem is fixed now.

Thanks for testing, I'm therefore closing this bug.