[debbugs-tracker] bug#24372: closed (25.1.50; After losing focus, cursor is hidden when moving point)

[GNU bug Tracking System]

Your message dated Fri, 23 Sep 2016 17:28:22 +0300
with message-id <address@hidden>
and subject line Re: bug#24372: 25.1.50; After losing focus, cursor is hidden 
when moving point
has caused the debbugs.gnu.org bug report #24372,
regarding 25.1.50; After losing focus, cursor is hidden when moving point
to be marked as done.

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-- 
24372: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=24372
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> --- Begin Message ---
>
>
>
> Subject: 
>
> 25.1.50; After losing focus, cursor is hidden when moving point
>
>
>
>
> Date: 
>
> Mon, 05 Sep 2016 21:16:40 +0200
>
>
>
>
> I've tested this with a GTK build on GNU/Linux; other toolkits and OSes
> might also be affected (but terminal mode doesn't seem to be affected).
>
> emacs -Q -eval '(setq blink-cursor-delay 0.0)'
>
> Move point around in the scratch buffer (e.g. press C-b a couple of
> times): the cursor stays visible, as it should be.  Then put the mouse
> focus on a different GTK window (not Emacs window), put the mouse focus
> back on Emacs, and move point again: the cursor is hidden, making it
> impossible to see until you stop moving.
>
>
>
> In GNU Emacs 25.1.50.4 (x86_64-unknown-linux-gnu, GTK+ Version 3.10.8)
>  of 2016-09-05 built on unknown
> Repository revision: 6acff25280dbb97b5e9ddfd872b33ceb36b0470a
> Windowing system distributor 'The X.Org Foundation', version 11.0.11501000
> System Description:     Ubuntu 14.04 LTS
>
> Recent messages:
> For information about GNU Emacs and the GNU system, type C-h C-a.
>
> Configured using:
>  'configure --with-modules'
>
> Configured features:
> XPM JPEG TIFF GIF PNG SOUND GSETTINGS NOTIFY GNUTLS FREETYPE XFT ZLIB
> TOOLKIT_SCROLL_BARS GTK3 X11 MODULES
>
> 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
>   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.
>
> Features:
> (shadow sort mail-extr emacsbug message subr-x puny seq byte-opt gv
> bytecomp byte-compile cl-extra help-mode cconv cl-loaddefs pcase cl-lib
> dired dired-loaddefs format-spec rfc822 mml easymenu mml-sec
> password-cache epa derived epg epg-config gnus-util rmail rmail-loaddefs
> mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils
> mailheader sendmail rfc2047 rfc2045 ietf-drums mm-util mail-prsvr
> mail-utils time-date mule-util tooltip eldoc electric uniquify
> ediff-hook vc-hooks lisp-float-type mwheel term/x-win x-win
> term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe
> tabulated-list newcomment elisp-mode lisp-mode prog-mode register page
> menu-bar rfn-eshadow 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 charscript 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 inotify dynamic-setting
> system-font-setting font-render-setting move-toolbar gtk x-toolkit x
> multi-tty make-network-process emacs)
>
> Memory information:
> ((conses 16 97852 8736)
>  (symbols 48 20654 0)
>  (miscs 40 325 194)
>  (strings 32 17964 4666)
>  (string-bytes 1 589251)
>  (vectors 16 13794)
>  (vector-slots 8 452872 5883)
>  (floats 8 183 107)
>  (intervals 56 211 0)
>  (buffers 976 12)
>  (heap 1024 48215 1026))
>
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> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#24372: 25.1.50; After losing focus, cursor is hidden when moving point
>
>
>
>
> Date: 
>
> Fri, 23 Sep 2016 17:28:22 +0300
>
>
>
>
> > Date: Sun, 11 Sep 2016 22:18:38 +0300
> > From: Eli Zaretskii <address@hidden>
> > Cc: address@hidden
> > 
> > >  How about a variant of this below? It uses a fixed limitation from
> > >  below on the delay, but only for the first blink. (The value 0.2 was
> > >  found by experimentation, not sure if we need to add yet another
> > >  defcustom for that.)
> > > 
> > > I don't think we should introduce magic numbers or further customization 
> > > options.
> > 
> > It solves the problem, doesn't it?  I don't mind very much if it were
> > a defcustom, I just think no one would want to change it.
> > 
> > >  > I've attached another patch with the change I have in mind.
> > > 
> > >  This has a disadvantage of creating a new timer object each time,
> > >  which I think we'd like to avoid: too much consing. (Also, don't you
> > >  need to set the timer variable to nil when the timer is disabled?)
> > > 
> > > I don't understand - the patch doesn't create any additional timers, it 
> > > only changes the initial delay of the
> > > idle-timer.
> > 
> > Each time blink-cursor--start-timer or blink-cursor--start-idle-timer
> > is called, they create a new timer, right?  And your patch makes us
> > call these functions each time blinking is started or ended, right?
> > 
> > > My patch is identical, except is uses blink-cursor-interval as lower bound. 
> > 
> > Of course.  That's why I said it's a minor variant.
> > 
> > There's another difference, though: in my patch we only limit the
> > first argument to run-with-timer/run-with-idle-timer, not the second.
> > So only the first blink cycle is affected.
>
> No further comments, so I pushed my last proposed patch to the
> emacs-25 branch, and I'm marking this bug done.
>
> Thanks.
>
>
> --- End Message ---