GNU bug report logs - #56184
29.0.50; Increasing max-redisplay-ticks after it is set very low does nothing

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Po Lu <luangruo <at> yahoo.com>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#56184: closed (29.0.50; Increasing max-redisplay-ticks after
 it is set very low does nothing)
Date: Sat, 25 Jun 2022 00:04:01 +0000

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Your message dated Sat, 25 Jun 2022 08:02:51 +0800
with message-id <87y1xlehjo.fsf <at> yahoo.com>
and subject line Re: bug#56184: 29.0.50; Increasing max-redisplay-ticks after it is set very low does nothing
has caused the debbugs.gnu.org bug report #56184,
regarding 29.0.50; Increasing max-redisplay-ticks after it is set very low does nothing
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
56184: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=56184
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Po Lu <luangruo <at> yahoo.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 29.0.50; Increasing max-redisplay-ticks after it is set very low
 does nothing
Date: Fri, 24 Jun 2022 18:30:23 +0800

Start "emacs -Q", and then evaluate (with M-:)

  (setq max-redisplay-ticks 3)

after the window containing *scratch* no longer redisplays, evalute

  (setq max-redisplay-ticks 3000000000000000)

and type M-x redraw-display RET.  The entire frame will become blank and
refuse to redisplay until a new frame is created.

In GNU Emacs 29.0.50 (build 192, x86_64-pc-linux-gnu, Motif Version 2.3.4)
 of 2022-06-24 built on trinity
Repository revision: 9f3ce27e56f5fa1053f2abcbcbd375cc0a75f283
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12014000
System Description: Fedora Linux 36 (Workstation Edition)

Configured using:
 'configure --with-dumping=unexec --with-x-toolkit=motif --without-cairo
 --cache-file=/tmp/ccache'

Configured features:
ACL DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG JSON LCMS2
LIBSELINUX LIBSYSTEMD LIBXML2 MODULES NOTIFY INOTIFY PNG RSVG SECCOMP
SOUND SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS UNEXEC WEBP X11 XDBE XFT
XIM XINPUT2 XPM MOTIF ZLIB

Important settings:
  value of $LANG: en_GB.UTF-8
  value of $XMODIFIERS: @im=none
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  show-paren-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
  line-number-mode: t
  indent-tabs-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message mailcap yank-media rmc puny
dired dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg
rfc6068 epg-config gnus-util text-property-search time-date seq gv
subr-x byte-opt bytecomp byte-compile cconv mm-decode mm-bodies
mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader cl-loaddefs
cl-lib sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr mail-utils
warnings iso-transl tooltip eldoc paren electric uniquify ediff-hook
vc-hooks lisp-float-type elisp-mode mwheel term/x-win x-win
term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe
tabulated-list replace newcomment text-mode lisp-mode prog-mode register
page tab-bar menu-bar rfn-eshadow isearch easymenu timer select
scroll-bar mouse jit-lock font-lock syntax font-core term/tty-colors
frame minibuffer nadvice simple cl-generic indonesian philippine 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 emoji-zwj charscript
charprop case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure
cl-preloaded button loaddefs faces cus-face macroexp files window
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget keymap hashtable-print-readable backquote threads dbusbind
inotify lcms2 dynamic-setting system-font-setting font-render-setting
motif x-toolkit xinput2 x multi-tty make-network-process emacs)

Memory information:
((conses 16 109667 8005)
 (symbols 48 21294 0)
 (strings 32 33643 1728)
 (string-bytes 1 917822)
 (vectors 16 17302)
 (vector-slots 8 565822 10894)
 (floats 8 63 64)
 (intervals 56 290 4)
 (buffers 992 12))

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From: Po Lu <luangruo <at> yahoo.com>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 56184-done <at> debbugs.gnu.org
Subject: Re: bug#56184: 29.0.50; Increasing max-redisplay-ticks after it is
 set very low does nothing
Date: Sat, 25 Jun 2022 08:02:51 +0800

Eli Zaretskii <eliz <at> gnu.org> writes:

>> From: Po Lu <luangruo <at> yahoo.com>
>> Cc: 56184 <at> debbugs.gnu.org
>> Date: Fri, 24 Jun 2022 21:08:15 +0800
>> 
>> Eli Zaretskii <eliz <at> gnu.org> writes:
>> 
>> > What do you expect it to do?
>> 
>> To redraw the entire frame, since max-redisplay-ticks is now
>> sufficiently large.
>
> That won't happen, unless you type C-l or make some change (e.g., type
> a character) into *scratch*, because the buffer *scratch* is marked
> "not to be redisplayed", and the only window on the frame is the
> window showing *scratch*.  So this is the expected and documented
> behavior.

Okay then, so I'm closing this bug.

Thanks.

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