GNU bug report logs - #24336
25.1; Can't place point with mouse in long lines

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Nick Helm <nick <at> tenpoint.co.nz>
To: <bug-gnu-emacs <at> gnu.org>
Subject: 25.1; Can't place point with mouse in long lines
Date: Tue, 30 Aug 2016 17:13:01 +1200

When visual-line-mode is active, I cannot use the mouse to correctly
place point if the buffer contains a line with a lot of spaces.

To reproduce:

Emacs -Q
M-x visual-line-mode
type some text, eg "this is some text"
C-u 300 <space> (or enough spaces to span more than one window width)
type some more text, eg "this is more text"
Try to place point in the line using the mouse or trackpad.

Point moves, but to the wrong location. The problem seems to also occur
in other buffer locations below the long line, provided the long line is
visible in the current window. That is, if the buffer has other lines
(long or otherwise) with normal spacing, I can't place point correctly
there either.

Turn off visual-line-mode and the problem goes away. Turn it back on and
it recurs. Delete the line or extend the window width so the spaces
occur on a single visual line and the problem goes away.

I can reproduce the problem on 24.5, 25.1RC1, and RC2. I'm using the 
NS build.




In GNU Emacs 25.1.1 (x86_64-apple-darwin13.4.0, NS appkit-1265.21 Version 10.9.5 (Build 13F1911))
 of 2016-08-22 built on builder10-9.porkrind.org
Windowing system distributor 'Apple', version 10.3.1404
Configured using:
 'configure --with-ns '--enable-locallisppath=/Library/Application
 Support/Emacs/${version}/site-lisp:/Library/Application
 Support/Emacs/site-lisp''

Configured features:
NOTIFY ACL GNUTLS LIBXML2 ZLIB TOOLKIT_SCROLL_BARS NS

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

Major mode: Text

Minor modes in effect:
  savehist-mode: t
  ido-ubiquitous-mode: t
  ido-everywhere: t
  global-eldoc-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
  visual-line-mode: t
  transient-mark-mode: t

Recent messages:
Loading /Users/nick/.emacs.d/config/mc/mc-run-once.list...done
Reusing Dired buffers is now ON
For information about GNU Emacs and the GNU system, type C-h C-a.
user-error: The mark is not set now, so there is no region

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Message #8 received at 24336 <at> debbugs.gnu.org (full text, mbox):

From: Nick Helm <nick <at> tenpoint.co.nz>
To: "24336 <at> debbugs.gnu.org" <24336 <at> debbugs.gnu.org>
Subject: bug#24336: 25.1; Can't place point with mouse in long lines
Date: Tue, 30 Aug 2016 10:15:03 +0000

[Message part 1 (text/plain, inline)]

This appears to be a duplicate of
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=23570

I applied a patch mentioned in that thread
(commit 99848b3 in master) and that fixes the issue
in all the cases that were causing problems here.

The other thread resolved to leave the fix for 25.2,
so I guess this bug can be closed.

Sorry for the duplication.

Nick

[Message part 2 (text/html, inline)]

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