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* bug#29789: 25.1; Emacs blocks user input when using visual-fill-column in wide terminals
@ 2017-12-20 19:28 Luis Gerhorst
  2017-12-20 20:29 ` Eli Zaretskii
  2017-12-20 21:35 ` Vasilij Schneidermann
  0 siblings, 2 replies; 8+ messages in thread
From: Luis Gerhorst @ 2017-12-20 19:28 UTC (permalink / raw)
  To: 29789


1. Run Emacs in a wide terminal (about 150 characters, 100 isn't
enough): emacs -nw -Q

2. Load a arbitrary theme: M-x load-theme adwaita

3. Load visual-fill-column. E.g. by copying
https://raw.githubusercontent.com/joostkremers/visual-fill-column/c0e5ec8f88a7598f7afdee565978410bee0de2a0/visual-fill-column.el
into the scratch buffer and typing M-x eval-buffer.

There is nothing suspicious about the code, regular lisp code should not
be able to block Emacs (I believe). It does not seem to contain any loops that block the main thread. The maintainer knows about the issue but say's it may be an issue with low-level code. In GUI Emacs it works.

4. Open a buffer and enable visual-fill-column-mode: M-x
visual-fill-column-mode

5. Your Emacs is now blocked. In ZSH when I type C-g C-g I'm back in my
shell which displays the message "zsh: suspended emacs -nw -Q".

This bug has been encountered by multiple users on different operating
systems (Debian, Ubuntu and macOS) running different versions of Emacs
(24.5 to 26.0), some reported it here:
https://github.com/joostkremers/visual-fill-column/issues/1



In GNU Emacs 25.1.1 (x86_64-pc-linux-gnu, GTK+ Version 3.22.11)
 of 2017-09-15, modified by Debian built on trouble
System Description:	Debian GNU/Linux 9.3 (stretch)

Configured using:
 'configure --build x86_64-linux-gnu --prefix=/usr
 --sharedstatedir=/var/lib --libexecdir=/usr/lib
 --localstatedir=/var/lib --infodir=/usr/share/info
 --mandir=/usr/share/man --with-pop=yes
 --enable-locallisppath=/etc/emacs25:/etc/emacs:/usr/local/share/emacs/25.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/25.1/site-lisp:/usr/share/emacs/site-lisp
 --with-sound=alsa --build x86_64-linux-gnu --prefix=/usr
 --sharedstatedir=/var/lib --libexecdir=/usr/lib
 --localstatedir=/var/lib --infodir=/usr/share/info
 --mandir=/usr/share/man --with-pop=yes
 --enable-locallisppath=/etc/emacs25:/etc/emacs:/usr/local/share/emacs/25.1/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/25.1/site-lisp:/usr/share/emacs/site-lisp
 --with-sound=alsa --with-x=yes --with-x-toolkit=gtk3
 --with-toolkit-scroll-bars 'CFLAGS=-g -O2
 -fdebug-prefix-map=/build/emacs25-wN2qS3/emacs25-25.1+1=. -fstack-protector-strong
 -Wformat -Werror=format-security -Wall' 'CPPFLAGS=-Wdate-time
 -D_FORTIFY_SOURCE=2' LDFLAGS=-Wl,-z,relro'

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

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

Major mode: GFM

Minor modes in effect:
  luis-text-wrap-mode: t
  visual-fill-column-mode: t
  adaptive-wrap-prefix-mode: t
  diff-auto-refine-mode: t
  shell-dirtrack-mode: t
  ws-butler-mode: t
  show-paren-mode: t
  frame-restore-mode: t
  winner-mode: t
  global-company-mode: t
  company-mode: t
  which-key-mode: t
  flx-ido-mode: t
  ido-vertical-mode: t
  crm-custom-mode: t
  ido-ubiquitous-mode: t
  ido-everywhere: t
  projectile-global-mode: t
  projectile-mode: t
  recentf-mode: t
  global-auto-revert-mode: t
  override-global-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
  column-number-mode: t
  line-number-mode: t
  visual-line-mode: t
  transient-mark-mode: t

Recent messages:
Source file ‘/home/cip/2016/un65esoq/.emacs.d/elpa/bind-key-2.3/bind-key.el’ newer than byte-compiled file
Loading /home/cip/2016/un65esoq/.emacs.d/recentf...done
Cleaning up the recentf list...done (0 removed)
Source file ‘/home/cip/2016/un65esoq/.emacs.d/elpa/s-1.12.0/s.el’ newer than byte-compiled file
Source file ‘/home/cip/2016/un65esoq/.emacs.d/elpa/company-0.9.4/company-dabbrev.el’ newer than byte-compiled file
Unable to load color "brightgreen" [12 times]
For information about GNU Emacs and the GNU system, type C-h C-a.
Mark saved where search started
Visual-Fill-Column mode enabled in current buffer
GNU Emacs 25.1.1 (x86_64-pc-linux-gnu, GTK+ Version 3.22.11) of 2017-09-15, modified by Debian

Load-path shadows:
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/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/tex-style hides /usr/share/emacs25/site-lisp/auctex/tex-style
/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/plain-tex hides /usr/share/emacs25/site-lisp/auctex/plain-tex
/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/tex-bar hides /usr/share/emacs25/site-lisp/auctex/tex-bar
/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/multi-prompt hides /usr/share/emacs25/site-lisp/auctex/multi-prompt
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/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/tex-fold hides /usr/share/emacs25/site-lisp/auctex/tex-fold
/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/toolbar-x hides /usr/share/emacs25/site-lisp/auctex/toolbar-x
/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/texmathp hides /usr/share/emacs25/site-lisp/auctex/texmathp
/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/prv-emacs hides /usr/share/emacs25/site-lisp/auctex/prv-emacs
/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/auctex hides /usr/share/emacs/site-lisp/auctex
/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/tex-site hides /usr/share/emacs/site-lisp/tex-site
/usr/share/emacs/25.1/site-lisp/debian-startup hides /usr/share/emacs/site-lisp/debian-startup
/usr/share/emacs/25.1/site-lisp/why3 hides /usr/share/emacs/site-lisp/why3
/usr/share/emacs25/site-lisp/cmake-data/cmake-mode hides /usr/share/emacs/site-lisp/cmake-mode
/home/cip/2016/un65esoq/.emacs.d/elpa/dsvn-20130120.1257/dsvn hides /usr/share/emacs/site-lisp/dsvn
/usr/share/emacs/site-lisp/rst hides /usr/share/emacs/25.1/lisp/textmodes/rst
/home/cip/2016/un65esoq/.emacs.d/elpa/scala-mode-1.0.0/ob-scala hides /usr/share/emacs/25.1/lisp/org/ob-scala
/usr/share/emacs25/site-lisp/latex-cjk-thai/thai-word hides /usr/share/emacs/25.1/lisp/language/thai-word
/usr/share/emacs/25.1/site-lisp/slime/lib/ert-x hides /usr/share/emacs/25.1/lisp/emacs-lisp/ert-x
/usr/share/emacs/25.1/site-lisp/slime/lib/ert hides /usr/share/emacs/25.1/lisp/emacs-lisp/ert
/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/tex-ispell hides /usr/share/emacs/site-lisp/auctex/tex-ispell
/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/preview hides /usr/share/emacs/site-lisp/auctex/preview
/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/tex hides /usr/share/emacs/site-lisp/auctex/tex
/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/context-en hides /usr/share/emacs/site-lisp/auctex/context-en
/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/context hides /usr/share/emacs/site-lisp/auctex/context
/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/bib-cite hides /usr/share/emacs/site-lisp/auctex/bib-cite
/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/tex-buf hides /usr/share/emacs/site-lisp/auctex/tex-buf
/home/cip/2016/un65esoq/.emacs.d/elpa/auctex-12.1.0/plain-tex hides /usr/share/emacs/site-lisp/auctex/plain-tex
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Features:
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luis-user-interaction luis-misc desktop frameset frame-restore
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european ethiopic indian cyrillic chinese charscript case-table epa-hook
jka-cmpr-hook help simple abbrev minibuffer cl-preloaded nadvice
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Memory information:
((conses 16 647388 21245)
 (symbols 48 43035 0)
 (miscs 40 574 465)
 (strings 32 104884 16016)
 (string-bytes 1 3270643)
 (vectors 16 79586)
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 (intervals 56 1023 0)
 (buffers 976 440))





^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2017-12-21 17:52 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-12-20 19:28 bug#29789: 25.1; Emacs blocks user input when using visual-fill-column in wide terminals Luis Gerhorst
2017-12-20 20:29 ` Eli Zaretskii
2017-12-20 20:45   ` Luis Gerhorst
2017-12-20 21:35 ` Vasilij Schneidermann
2017-12-21  3:37   ` Eli Zaretskii
2017-12-21  5:01     ` Eli Zaretskii
2017-12-21 17:49       ` Eli Zaretskii
2017-12-21 17:52         ` Luis Gerhorst

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