[Bug 1452842] [NEW] emacs text selection problem with multiple frames/windows

[J Bauer]

Public bug reported:

Using emacs24 (24.3+1-2ubuntu1) in Ubuntu 14.04.2 LTS.
Also using xfce4 with Focus follows mouse.

Text selection changes when moving focus to another frame.

To reproduce:

- Start emacs.  e.g.  emacs -Q

- Open a file, or just use the *scratch* buffer.  But make sure there is
some text in it.

- Create another X-widow (frame in emacs terminology) (i.e. C-x 5 2).

- Make sure both frames are viewing the same buffer.  It can be the same
or different parts of the buffer.

- In Frame A, place the cursor at some location.

- In Frame B, select some text in a location away from the cursor
location of Frame A.  You can use the mouse to select or the keyboard.

- Change keyboard focus to Frame A.

- Selected text will change to include everything from the cursor in
frame A up to the original selected text.  Sometimes the original
selection will be included, sometimes not.


The same thing happens if you use 2 windows in one frame and use C-x o to switch windows.


Expected behavior:  Selection should remain unchanged.

** Affects: emacs-defaults (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1452842

Title:
  emacs text selection problem with multiple frames/windows

Status in emacs-defaults package in Ubuntu:
  New

Bug description:
  Using emacs24 (24.3+1-2ubuntu1) in Ubuntu 14.04.2 LTS.
  Also using xfce4 with Focus follows mouse.

  Text selection changes when moving focus to another frame.

  To reproduce:

  - Start emacs.  e.g.  emacs -Q

  - Open a file, or just use the *scratch* buffer.  But make sure there
  is some text in it.

  - Create another X-widow (frame in emacs terminology) (i.e. C-x 5 2).

  - Make sure both frames are viewing the same buffer.  It can be the
  same or different parts of the buffer.

  - In Frame A, place the cursor at some location.

  - In Frame B, select some text in a location away from the cursor
  location of Frame A.  You can use the mouse to select or the keyboard.

  - Change keyboard focus to Frame A.

  - Selected text will change to include everything from the cursor in
  frame A up to the original selected text.  Sometimes the original
  selection will be included, sometimes not.

  
  The same thing happens if you use 2 windows in one frame and use C-x o to switch windows.

  
  Expected behavior:  Selection should remain unchanged.

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