[debbugs-tracker] bug#16148: closed (Cursor stuck on line ending w/ visual-order-cursor movement - move-point-visually fails.)

[GNU bug Tracking System]

Your message dated Sat, 14 Dec 2013 21:37:35 +0200
with message-id <address@hidden>
and subject line Re: bug#16148: Cursor stuck on line ending w/ 
visual-order-cursor      movement - move-point-visually fails.
has caused the debbugs.gnu.org bug report #16148,
regarding Cursor stuck on line ending w/ visual-order-cursor movement - 
move-point-visually fails.
to be marked as done.

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-- 
16148: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=16148
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> --- Begin Message ---
>
>
>
> Subject: 
>
> Cursor stuck on line ending w/ visual-order-cursor movement - move-point-visually fails.
>
>
>
>
> Date: 
>
> Sat, 14 Dec 2013 12:53:51 -0500
>
>
>
>
> With a certain combination of settings, cursor movement to the left fails at 
> the (right) end of lines:
>
> Emacs -Q -nw
>
> [Enter and evaluate the following:]
>
>         (whitespace-newline-mode 1)
>         (global-hl-line-mode 1)
>         (setq visual-order-cursor-movement t)
>
> [Then press left-arrow repeatedly.  Cursor will get "stuck" on a line ending.]
>
>
> Further observations:
> - the "-nw" is not necessary - this is just to simplify things.
> - `hl-line-mode' alone does not suffice - it has to the be 
> `global-hl-line-mode'.
>
>
>
> Second, simpler recipe:
>
> Emacs -Q -nw
>
> [Enter and evaluate the following:]
>
>         (whitespace-newline-mode 1)
>
> Place cursor at end of line, then M-: (move-point-visually -1)  RET.
> Nothing happens.
>
>
>
>
>
>
>
> In GNU Emacs 24.3.50.3 (x86_64-apple-darwin13.0.0, NS apple-appkit-1265.00)
>  of 2013-12-07 on momo
>
> [git revision 9d4f4d00978ceed46c4c30fe41c258716f9e042e - last change Sat Dec 7 
> 20:46]
>
> Configured using:
>  `configure --with-ns'
>
> Important settings:
>   value of $LANG: en_US.UTF-8
>   locale-coding-system: utf-8-unix
>   default enable-multibyte-characters: t
>
> Major mode: Lisp Interaction
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#16148: Cursor stuck on line ending w/ visual-order-cursor	movement - move-point-visually fails.
>
>
>
>
> Date: 
>
> Sat, 14 Dec 2013 21:37:35 +0200
>
>
>
>
> > From: David Reitter <address@hidden>
> > Date: Sat, 14 Dec 2013 12:53:51 -0500
> > 
> > With a certain combination of settings, cursor movement to the left fails at 
> > the (right) end of lines:
> > 
> > Emacs -Q -nw
> > 
> > [Enter and evaluate the following:]
> > 
> >       (whitespace-newline-mode 1)
> >       (global-hl-line-mode 1)
> >       (setq visual-order-cursor-movement t)
> > 
> > [Then press left-arrow repeatedly.  Cursor will get "stuck" on a line ending.]
>
> Fixed.
>
> > - `hl-line-mode' alone does not suffice - it has to the be 
> > `global-hl-line-mode'.
>
> That's because move-point-visually uses 2 separate strategies, and the
> problem was only in one of them.  You need to work very hard for
> move-point-visually to fall back on the second strategy, but the
> combination of the above 2 mode, each one of which is a redisplay
> optimizations killer, succeeded in doing just that.
>
> > Second, simpler recipe:
> > 
> > Emacs -Q -nw
> > 
> > [Enter and evaluate the following:]
> > 
> >       (whitespace-newline-mode 1)
> > 
> > Place cursor at end of line, then M-: (move-point-visually -1)  RET.
> > Nothing happens.
>
> This is the same problem (M-: also forces move-point-visually to use
> the 2nd strategy), so it is also fixed.
>
> Thanks.
>
>
> --- End Message ---